cors: make hostname configurable via env variable

this is required to support `docker secrets`

.dockerignore

@@ -1,5 +1,5 @@
-**/Dockerfile
-**/bin
-**/obj
-**/.env
+**/Dockerfile
+**/bin
+**/obj
+**/.env
 **/.env.local

.env

@@ -1,51 +1,77 @@
-# Required variables
-NOTESNOOK_API_SECRET= # This should be a randomly generated secret
+# Description: Name of your self hosted instance. Used in the client apps for identification purposes
+# Required: yes
+# Example: notesnook-instance-sg
+INSTANCE_NAME=self-hosted-notesnook-instance
 
-# SMTP settings required for delivering emails
+# Description: This secret is used for generating, validating, and introspecting auth tokens. It must be a randomly generated token (preferably >32 characters).
+# Required: yes
+NOTESNOOK_API_SECRET=
+
+# Description: Use this flag to disable creation of new accounts on your instance (i.e. in case it is exposed to the Internet).
+# Required: yes
+# Possible values: true/false
+DISABLE_SIGNUPS=false
+
+### SMTP Configuration ###
+# SMTP Configuration is required for sending emails for password reset, 2FA emails etc. You can get SMTP settings from your email provider.
+
+# Description: Username for the SMTP connection (most time it is the email address of your account). Check your email provider's documentation to get the appropriate value.
+# Required: yes
 SMTP_USERNAME=
+# Description: Password for the SMTP connection. Check your email provider's documentation to get the appropriate value.
+# Required: yes
 SMTP_PASSWORD=
+# Description: Host on which the the SMTP connection is running. Check your email provider's documentation to get the appropriate value.
+# Required: yes
+# Example: smtp.gmail.com
 SMTP_HOST=
+# Description: Port on which the the SMTP connection is running. Check your email provider's documentation to get the appropriate value.
+# Required: yes
+# Example: 465
 SMTP_PORT=
-NOTESNOOK_SENDER_EMAIL= # optional
-NOTESNOOK_SENDER_NAME= # optional
-SMTP_REPLYTO_NAME= # optional
-SMTP_REPLYTO_EMAIL= # optional
 
-# MessageBird or Twilio are used for 2FA via SMS
-# You can setup either of them or none of them but keep in mind
-# that 2FA via SMS will not work if you haven't set up at least
-# one SMS provider.
-MESSAGEBIRD_ACCESS_KEY=
+# Description: Twilio account SID is required for sending SMS with 2FA codes. Learn more here: https://help.twilio.com/articles/14726256820123-What-is-a-Twilio-Account-SID-and-where-can-I-find-it-
+# Required: no
 TWILIO_ACCOUNT_SID=
+# Description: Twilio account auth is required for sending SMS with 2FA codes. Learn more here: https://help.twilio.com/articles/223136027-Auth-Tokens-and-How-to-Change-Them
+# Required: no
 TWILIO_AUTH_TOKEN=
+# Description: The unique string that we created to identify the Service resource.
+# Required: no
+# Example: VAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 TWILIO_SERVICE_SID=
 
-# Server discovery settings
-# The domain must be without protocol
-# e.g. example.org NOT http://example.org
-NOTESNOOK_SERVER_DOMAIN=
-IDENTITY_SERVER_DOMAIN=
-SSE_SERVER_DOMAIN=
+# Description: Add the origins for which you want to allow CORS. Leave it empty to allow all origins to access your server. If you want to allow multiple origins, seperate each origin with a comma.
+# Required: no
+# Example: https://app.notesnook.com,http://localhost:3000
+NOTESNOOK_CORS_ORIGINS=
 
-# Add the origins on which you want to enable CORS.
-# Leave it empty to allow all origins to access your server.
-# Seperate each origin with a comma
-# e.g. https://app.notesnook.com,http://localhost:3000
-NOTESNOOK_CORS_ORIGINS= # optional
+# Description: Add known proxies for incoming HTTP requests
+# Required: no
+# Example: 192.168.1.2,192.168.1.3
+KNOWN_PROXIES=
 
-# url of the web app instance you want to use
-# e.g. https://app.notesnook.com
-# Note: no slashes at the end
-NOTESNOOK_APP_HOST=
+# Description: This is the public URL for the web app, and is used by the backend for creating redirect URLs (e.g. after email confirmation etc). 
+# Note: the URL has no slashes at the end
+# Required: yes
+# Example: https://app.notesnook.com
+NOTESNOOK_APP_PUBLIC_URL=https://app.notesnook.com
+# Description: This is the public URL for the monograph frontend.
+# Required: yes
+# Example: https://monogr.ph
+MONOGRAPH_PUBLIC_URL=http://localhost:6264
+# Description: This is the public URL for the Authentication server. Used for generating email confirmation & password reset URLs.
+# Required: yes
+# Example: https://auth.streetwriters.co
+AUTH_SERVER_PUBLIC_URL=http://localhost:8264
+# Description: This is the public URL for the S3 attachments server (minio). It'll be used by the Notesnook clients for uploading/downloading attachments.
+# Required: yes
+# Example: https://attachments.notesnook.com
+ATTACHMENTS_SERVER_PUBLIC_URL=http://localhost:9000
 
-# Minio is used for S3 storage
-MINIO_ROOT_USER= # aka. AccessKeyId (must be > 3 characters)
-MINIO_ROOT_PASSWORD= # aka. AccessKey (must be > 8 characters)
-
-# If you don't want to use Minio, you can use any other S3 compatible
-# storage service.
-S3_ACCESS_KEY=
-S3_ACCESS_KEY_ID=
-S3_SERVICE_URL=
-S3_REGION=
-S3_BUCKET_NAME=attachments # required
+# Description: Custom username for the root Minio account. Minio is used for storing your attachments. This must be greater than 3 characters in length.
+# Required: no
+MINIO_ROOT_USER=
+# Description: Custom password for the root Minio account. Minio is used for storing your attachments. This must be greater than 8 characters in length.
+# Required: no
+MINIO_ROOT_PASSWORD=

.github/workflows/publish.yml

@@ -10,8 +10,9 @@
 name: Publish Docker images
 
 on:
-  release:
-    types: [published]
+  push:
+    tags:
+      - "v*"
 
 jobs:
   push_to_registry:
@@ -22,12 +23,19 @@ jobs:
         repos:
           - image: streetwriters/notesnook-sync
             file: ./Notesnook.API/Dockerfile
+            context: .
+
+          - image: streetwriters/cors-proxy
+            file: ./cors-proxy/Dockerfile
+            context: ./cors-proxy/
 
           - image: streetwriters/identity
             file: ./Streetwriters.Identity/Dockerfile
+            context: .
 
           - image: streetwriters/sse
             file: ./Streetwriters.Messenger/Dockerfile
+            context: .
     permissions:
       packages: write
       contents: read
@@ -41,7 +49,7 @@ jobs:
       - name: Docker Setup Buildx
         uses: docker/setup-buildx-action@v3
         with:
-          platforms: linux/amd64,linux/arm64,linux/arm/v7,linux/arm/v8
+          platforms: linux/amd64,linux/arm64
 
       - name: Log in to Docker Hub
         uses: docker/login-action@v3
@@ -70,10 +78,10 @@ jobs:
         id: push
         uses: docker/build-push-action@v6
         with:
-          context: .
+          context: ${{ matrix.repos.context }}
           file: ${{ matrix.repos.file }}
           push: true
-          platforms: linux/amd64,linux/arm64,linux/arm/v7,linux/arm/v8
+          platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           cache-from: ${{ matrix.repos.image }}:latest
 

.gitignore

@@ -1,267 +1,267 @@
-## Ignore Visual Studio temporary files, build results, and
-## files generated by popular Visual Studio add-ons.
-
-# User-specific files
-*.suo
-*.user
-*.userosscache
-*.sln.docstates
-
-# User-specific files (MonoDevelop/Xamarin Studio)
-*.userprefs
-
-# Build results
-[Dd]ebug/
-[Dd]ebugPublic/
-[Rr]elease/
-[Rr]eleases/
-x64/
-x86/
-bld/
-[Bb]in/
-[Oo]bj/
-[Ll]og/
-
-# Visual Studio 2015 cache/options directory
-.vs/
-# Uncomment if you have tasks that create the project's static files in wwwroot
-#wwwroot/
-
-# MSTest test Results
-[Tt]est[Rr]esult*/
-[Bb]uild[Ll]og.*
-
-# NUNIT
-*.VisualState.xml
-TestResult.xml
-
-# Build Results of an ATL Project
-[Dd]ebugPS/
-[Rr]eleasePS/
-dlldata.c
-
-# DNX
-project.lock.json
-project.fragment.lock.json
-artifacts/
-
-*_i.c
-*_p.c
-*_i.h
-*.ilk
-*.meta
-*.obj
-*.pch
-*.pdb
-*.pgc
-*.pgd
-*.rsp
-*.sbr
-*.tlb
-*.tli
-*.tlh
-*.tmp
-*.tmp_proj
-*.log
-*.vspscc
-*.vssscc
-.builds
-*.pidb
-*.svclog
-*.scc
-
-# Chutzpah Test files
-_Chutzpah*
-
-# Visual C++ cache files
-ipch/
-*.aps
-*.ncb
-*.opendb
-*.opensdf
-*.sdf
-*.cachefile
-*.VC.db
-*.VC.VC.opendb
-
-# Visual Studio profiler
-*.psess
-*.vsp
-*.vspx
-*.sap
-
-# TFS 2012 Local Workspace
-$tf/
-
-# Guidance Automation Toolkit
-*.gpState
-
-# ReSharper is a .NET coding add-in
-_ReSharper*/
-*.[Rr]e[Ss]harper
-*.DotSettings.user
-
-# JustCode is a .NET coding add-in
-.JustCode
-
-# TeamCity is a build add-in
-_TeamCity*
-
-# DotCover is a Code Coverage Tool
-*.dotCover
-
-# NCrunch
-_NCrunch_*
-.*crunch*.local.xml
-nCrunchTemp_*
-
-# MightyMoose
-*.mm.*
-AutoTest.Net/
-
-# Web workbench (sass)
-.sass-cache/
-
-# Installshield output folder
-[Ee]xpress/
-
-# DocProject is a documentation generator add-in
-DocProject/buildhelp/
-DocProject/Help/*.HxT
-DocProject/Help/*.HxC
-DocProject/Help/*.hhc
-DocProject/Help/*.hhk
-DocProject/Help/*.hhp
-DocProject/Help/Html2
-DocProject/Help/html
-
-# Click-Once directory
-publish/
-
-# Publish Web Output
-*.[Pp]ublish.xml
-*.azurePubxml
-# TODO: Comment the next line if you want to checkin your web deploy settings
-# but database connection strings (with potential passwords) will be unencrypted
-#*.pubxml
-*.publishproj
-
-# Microsoft Azure Web App publish settings. Comment the next line if you want to
-# checkin your Azure Web App publish settings, but sensitive information contained
-# in these scripts will be unencrypted
-PublishScripts/
-
-# NuGet Packages
-*.nupkg
-# The packages folder can be ignored because of Package Restore
-**/packages/*
-# except build/, which is used as an MSBuild target.
-!**/packages/build/
-# Uncomment if necessary however generally it will be regenerated when needed
-#!**/packages/repositories.config
-# NuGet v3's project.json files produces more ignoreable files
-*.nuget.props
-*.nuget.targets
-
-# Microsoft Azure Build Output
-csx/
-*.build.csdef
-
-# Microsoft Azure Emulator
-ecf/
-rcf/
-
-# Windows Store app package directories and files
-AppPackages/
-BundleArtifacts/
-Package.StoreAssociation.xml
-_pkginfo.txt
-
-# Visual Studio cache files
-# files ending in .cache can be ignored
-*.[Cc]ache
-# but keep track of directories ending in .cache
-!*.[Cc]ache/
-
-# Others
-ClientBin/
-~$*
-*~
-*.dbmdl
-*.dbproj.schemaview
-*.jfm
-*.pfx
-*.publishsettings
-node_modules/
-orleans.codegen.cs
-
-# Since there are multiple workflows, uncomment next line to ignore bower_components
-# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
-#bower_components/
-
-# RIA/Silverlight projects
-Generated_Code/
-
-# Backup & report files from converting an old project file
-# to a newer Visual Studio version. Backup files are not needed,
-# because we have git ;-)
-_UpgradeReport_Files/
-Backup*/
-UpgradeLog*.XML
-UpgradeLog*.htm
-
-# SQL Server files
-*.mdf
-*.ldf
-
-# Business Intelligence projects
-*.rdl.data
-*.bim.layout
-*.bim_*.settings
-
-# Microsoft Fakes
-FakesAssemblies/
-
-# GhostDoc plugin setting file
-*.GhostDoc.xml
-
-# Node.js Tools for Visual Studio
-.ntvs_analysis.dat
-
-# Visual Studio 6 build log
-*.plg
-
-# Visual Studio 6 workspace options file
-*.opt
-
-# Visual Studio LightSwitch build output
-**/*.HTMLClient/GeneratedArtifacts
-**/*.DesktopClient/GeneratedArtifacts
-**/*.DesktopClient/ModelManifest.xml
-**/*.Server/GeneratedArtifacts
-**/*.Server/ModelManifest.xml
-_Pvt_Extensions
-
-# Paket dependency manager
-.paket/paket.exe
-paket-files/
-
-# FAKE - F# Make
-.fake/
-
-# JetBrains Rider
-.idea/
-*.sln.iml
-
-# CodeRush
-.cr/
-
-# Python Tools for Visual Studio (PTVS)
-__pycache__/
-*.pyc
-
-keys/
-dist/
-keystore/
-.env.local
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+
+# Visual Studio 2015 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# DNX
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding add-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# TODO: Comment the next line if you want to checkin your web deploy settings
+# but database connection strings (with potential passwords) will be unencrypted
+#*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# The packages folder can be ignored because of Package Restore
+**/packages/*
+# except build/, which is used as an MSBuild target.
+!**/packages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/packages/repositories.config
+# NuGet v3's project.json files produces more ignoreable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+node_modules/
+orleans.codegen.cs
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+*.mdf
+*.ldf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# JetBrains Rider
+.idea/
+*.sln.iml
+
+# CodeRush
+.cr/
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+keys/
+dist/
+keystore/
+.env.local
 Notesnook.API/sync/

.vscode/launch.json

@@ -9,7 +9,7 @@
       "type": "coreclr",
       "request": "launch",
       "preLaunchTask": "build-notesnook",
-      "program": "bin/Debug/net8.0/Notesnook.API.dll",
+      "program": "bin/Debug/net9.0/Notesnook.API.dll",
       "args": [],
       "cwd": "${workspaceFolder}/Notesnook.API",
       "stopAtEntry": false,
@@ -24,7 +24,7 @@
       "type": "coreclr",
       "request": "launch",
       "preLaunchTask": "build-identity",
-      "program": "bin/Debug/net8.0/Streetwriters.Identity.dll",
+      "program": "bin/Debug/net9.0/Streetwriters.Identity.dll",
       "args": [],
       "cwd": "${workspaceFolder}/Streetwriters.Identity",
       "stopAtEntry": false,
@@ -39,7 +39,7 @@
       "type": "coreclr",
       "request": "launch",
       "preLaunchTask": "build-messenger",
-      "program": "bin/Debug/net8.0/Streetwriters.Messenger.dll",
+      "program": "bin/Debug/net9.0/Streetwriters.Messenger.dll",
       "args": [],
       "cwd": "${workspaceFolder}/Streetwriters.Messenger",
       "stopAtEntry": false,

.vscode/tasks.json

@@ -1,41 +1,41 @@
-{
-  "version": "2.0.0",
-  "tasks": [
-    {
-      "label": "build-notesnook",
-      "command": "dotnet",
-      "type": "process",
-      "args": [
-        "build",
-        "${workspaceFolder}/Notesnook.API/Notesnook.API.csproj",
-        "/property:GenerateFullPaths=true",
-        "/consoleloggerparameters:NoSummary"
-      ],
-      "problemMatcher": "$msCompile"
-    },
-    {
-      "label": "build-identity",
-      "command": "dotnet",
-      "type": "process",
-      "args": [
-        "build",
-        "${workspaceFolder}/Streetwriters.Identity/Streetwriters.Identity.csproj",
-        "/property:GenerateFullPaths=true",
-        "/consoleloggerparameters:NoSummary"
-      ],
-      "problemMatcher": "$msCompile"
-    },
-    {
-      "label": "build-messenger",
-      "command": "dotnet",
-      "type": "process",
-      "args": [
-        "build",
-        "${workspaceFolder}/Streetwriters.Messenger/Streetwriters.Messenger.csproj",
-        "/property:GenerateFullPaths=true",
-        "/consoleloggerparameters:NoSummary"
-      ],
-      "problemMatcher": "$msCompile"
-    },
-  ]
-}
+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "build-notesnook",
+      "command": "dotnet",
+      "type": "process",
+      "args": [
+        "build",
+        "${workspaceFolder}/Notesnook.API/Notesnook.API.csproj",
+        "/property:GenerateFullPaths=true",
+        "/consoleloggerparameters:NoSummary"
+      ],
+      "problemMatcher": "$msCompile"
+    },
+    {
+      "label": "build-identity",
+      "command": "dotnet",
+      "type": "process",
+      "args": [
+        "build",
+        "${workspaceFolder}/Streetwriters.Identity/Streetwriters.Identity.csproj",
+        "/property:GenerateFullPaths=true",
+        "/consoleloggerparameters:NoSummary"
+      ],
+      "problemMatcher": "$msCompile"
+    },
+    {
+      "label": "build-messenger",
+      "command": "dotnet",
+      "type": "process",
+      "args": [
+        "build",
+        "${workspaceFolder}/Streetwriters.Messenger/Streetwriters.Messenger.csproj",
+        "/property:GenerateFullPaths=true",
+        "/consoleloggerparameters:NoSummary"
+      ],
+      "problemMatcher": "$msCompile"
+    },
+  ]
+}

AUTHORS

@@ -1,3 +1,3 @@
-Notesnook Sync Server is written & maintained by:
-  - Abdullah Atta <abdullahatta@streetwriters.co>
-  - Ammar Ahmed <ammarahmed6506@gmail.com>
+Notesnook Sync Server is written & maintained by:
+  - Abdullah Atta <abdullahatta@streetwriters.co>
+  - Ammar Ahmed <ammarahmed6506@gmail.com>

CODE_OF_CONDUCT.md

@@ -1,128 +1,128 @@
-# Contributor Covenant Code of Conduct
-
-## Our Pledge
-
-We as members, contributors, and leaders pledge to make participation in our
-community a harassment-free experience for everyone, regardless of age, body
-size, visible or invisible disability, ethnicity, sex characteristics, gender
-identity and expression, level of experience, education, socio-economic status,
-nationality, personal appearance, race, religion, or sexual identity
-and orientation.
-
-We pledge to act and interact in ways that contribute to an open, welcoming,
-diverse, inclusive, and healthy community.
-
-## Our Standards
-
-Examples of behavior that contributes to a positive environment for our
-community include:
-
-- Demonstrating empathy and kindness toward other people
-- Being respectful of differing opinions, viewpoints, and experiences
-- Giving and gracefully accepting constructive feedback
-- Accepting responsibility and apologizing to those affected by our mistakes,
-  and learning from the experience
-- Focusing on what is best not just for us as individuals, but for the
-  overall community
-
-Examples of unacceptable behavior include:
-
-- The use of sexualized language or imagery, and sexual attention or
-  advances of any kind
-- Trolling, insulting or derogatory comments, and personal or political attacks
-- Public or private harassment
-- Publishing others' private information, such as a physical or email
-  address, without their explicit permission
-- Other conduct which could reasonably be considered inappropriate in a
-  professional setting
-
-## Enforcement Responsibilities
-
-Community leaders are responsible for clarifying and enforcing our standards of
-acceptable behavior and will take appropriate and fair corrective action in
-response to any behavior that they deem inappropriate, threatening, offensive,
-or harmful.
-
-Community leaders have the right and responsibility to remove, edit, or reject
-comments, commits, code, wiki edits, issues, and other contributions that are
-not aligned to this Code of Conduct, and will communicate reasons for moderation
-decisions when appropriate.
-
-## Scope
-
-This Code of Conduct applies within all community spaces, and also applies when
-an individual is officially representing the community in public spaces.
-Examples of representing our community include using an official e-mail address,
-posting via an official social media account, or acting as an appointed
-representative at an online or offline event.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported to the community leaders responsible for enforcement at
-support@streetwriters.co.
-All complaints will be reviewed and investigated promptly and fairly.
-
-All community leaders are obligated to respect the privacy and security of the
-reporter of any incident.
-
-## Enforcement Guidelines
-
-Community leaders will follow these Community Impact Guidelines in determining
-the consequences for any action they deem in violation of this Code of Conduct:
-
-### 1. Correction
-
-**Community Impact**: Use of inappropriate language or other behavior deemed
-unprofessional or unwelcome in the community.
-
-**Consequence**: A private, written warning from community leaders, providing
-clarity around the nature of the violation and an explanation of why the
-behavior was inappropriate. A public apology may be requested.
-
-### 2. Warning
-
-**Community Impact**: A violation through a single incident or series
-of actions.
-
-**Consequence**: A warning with consequences for continued behavior. No
-interaction with the people involved, including unsolicited interaction with
-those enforcing the Code of Conduct, for a specified period of time. This
-includes avoiding interactions in community spaces as well as external channels
-like social media. Violating these terms may lead to a temporary or
-permanent ban.
-
-### 3. Temporary Ban
-
-**Community Impact**: A serious violation of community standards, including
-sustained inappropriate behavior.
-
-**Consequence**: A temporary ban from any sort of interaction or public
-communication with the community for a specified period of time. No public or
-private interaction with the people involved, including unsolicited interaction
-with those enforcing the Code of Conduct, is allowed during this period.
-Violating these terms may lead to a permanent ban.
-
-### 4. Permanent Ban
-
-**Community Impact**: Demonstrating a pattern of violation of community
-standards, including sustained inappropriate behavior, harassment of an
-individual, or aggression toward or disparagement of classes of individuals.
-
-**Consequence**: A permanent ban from any sort of public interaction within
-the community.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage],
-version 2.0, available at
-https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
-
-Community Impact Guidelines were inspired by [Mozilla's code of conduct
-enforcement ladder](https://github.com/mozilla/diversity).
-
-[homepage]: https://www.contributor-covenant.org
-
-For answers to common questions about this code of conduct, see the FAQ at
-https://www.contributor-covenant.org/faq. Translations are available at
-https://www.contributor-covenant.org/translations.
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+- Demonstrating empathy and kindness toward other people
+- Being respectful of differing opinions, viewpoints, and experiences
+- Giving and gracefully accepting constructive feedback
+- Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+- Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+- The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+- Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+support@streetwriters.co.
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior, harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.0, available at
+https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+
+Community Impact Guidelines were inspired by [Mozilla's code of conduct
+enforcement ladder](https://github.com/mozilla/diversity).
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.

Notesnook.API/Accessors/SyncItemsRepositoryAccessor.cs

@@ -18,6 +18,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
 using MongoDB.Driver;
 using Notesnook.API.Interfaces;
 using Notesnook.API.Models;
@@ -43,6 +44,10 @@ namespace Notesnook.API.Accessors
         public SyncItemsRepository Tags { get; }
         public Repository<UserSettings> UsersSettings { get; }
         public Repository<Monograph> Monographs { get; }
+        public Repository<InboxApiKey> InboxApiKey { get; }
+        public Repository<InboxSyncItem> InboxItems { get; }
+        public Repository<SyncDevice> SyncDevices { get; }
+        public Repository<DeviceIdsChunk> DeviceIdsChunks { get; }
 
         public SyncItemsRepositoryAccessor(IDbContext dbContext,
 
@@ -71,22 +76,32 @@ namespace Notesnook.API.Accessors
         [FromKeyedServices(Collections.TagsKey)]
         IMongoCollection<SyncItem> tags,
 
-        Repository<UserSettings> usersSettings, Repository<Monograph> monographs)
+        Repository<UserSettings> usersSettings,
+        Repository<Monograph> monographs,
+        Repository<InboxApiKey> inboxApiKey,
+        Repository<InboxSyncItem> inboxItems,
+        Repository<SyncDevice> syncDevices,
+        Repository<DeviceIdsChunk> deviceIdsChunks,
+        ILogger<SyncItemsRepository> logger)
         {
             UsersSettings = usersSettings;
             Monographs = monographs;
-            Notebooks = new SyncItemsRepository(dbContext, notebooks);
-            Notes = new SyncItemsRepository(dbContext, notes);
-            Contents = new SyncItemsRepository(dbContext, content);
-            Settings = new SyncItemsRepository(dbContext, settings);
-            LegacySettings = new SyncItemsRepository(dbContext, legacySettings);
-            Attachments = new SyncItemsRepository(dbContext, attachments);
-            Shortcuts = new SyncItemsRepository(dbContext, shortcuts);
-            Reminders = new SyncItemsRepository(dbContext, reminders);
-            Relations = new SyncItemsRepository(dbContext, relations);
-            Colors = new SyncItemsRepository(dbContext, colors);
-            Vaults = new SyncItemsRepository(dbContext, vaults);
-            Tags = new SyncItemsRepository(dbContext, tags);
+            InboxApiKey = inboxApiKey;
+            InboxItems = inboxItems;
+            SyncDevices = syncDevices;
+            DeviceIdsChunks = deviceIdsChunks;
+            Notebooks = new SyncItemsRepository(dbContext, notebooks, logger);
+            Notes = new SyncItemsRepository(dbContext, notes, logger);
+            Contents = new SyncItemsRepository(dbContext, content, logger);
+            Settings = new SyncItemsRepository(dbContext, settings, logger);
+            LegacySettings = new SyncItemsRepository(dbContext, legacySettings, logger);
+            Attachments = new SyncItemsRepository(dbContext, attachments, logger);
+            Shortcuts = new SyncItemsRepository(dbContext, shortcuts, logger);
+            Reminders = new SyncItemsRepository(dbContext, reminders, logger);
+            Relations = new SyncItemsRepository(dbContext, relations, logger);
+            Colors = new SyncItemsRepository(dbContext, colors, logger);
+            Vaults = new SyncItemsRepository(dbContext, vaults, logger);
+            Tags = new SyncItemsRepository(dbContext, tags, logger);
         }
     }
 }

Notesnook.API/Authorization/InboxApiKeyAuthenticationHandler.cs

@@ -0,0 +1,101 @@
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Security.Claims;
+using System.Text.Encodings.Web;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using Notesnook.API.Models;
+using Streetwriters.Data.Repositories;
+
+namespace Notesnook.API.Authorization
+{
+    public static class InboxApiKeyAuthenticationDefaults
+    {
+        public const string AuthenticationScheme = "InboxApiKey";
+    }
+
+    public class InboxApiKeyAuthenticationSchemeOptions : AuthenticationSchemeOptions
+    {
+    }
+
+    public class InboxApiKeyAuthenticationHandler : AuthenticationHandler<InboxApiKeyAuthenticationSchemeOptions>
+    {
+        private readonly Repository<InboxApiKey> _inboxApiKeyRepository;
+
+        public InboxApiKeyAuthenticationHandler(
+            IOptionsMonitor<InboxApiKeyAuthenticationSchemeOptions> options,
+            ILoggerFactory logger,
+            UrlEncoder encoder,
+            Repository<InboxApiKey> inboxApiKeyRepository)
+            : base(options, logger, encoder)
+        {
+            _inboxApiKeyRepository = inboxApiKeyRepository;
+        }
+
+        protected override async Task<AuthenticateResult> HandleAuthenticateAsync()
+        {
+            if (!Request.Headers.ContainsKey("Authorization"))
+            {
+                return AuthenticateResult.Fail("Missing Authorization header");
+            }
+
+            var apiKey = Request.Headers["Authorization"].ToString().Trim();
+            if (string.IsNullOrEmpty(apiKey))
+            {
+                return AuthenticateResult.Fail("Missing API key");
+            }
+
+            try
+            {
+                var inboxApiKey = await _inboxApiKeyRepository.FindOneAsync(k => k.Key == apiKey);
+                if (inboxApiKey == null)
+                {
+                    return AuthenticateResult.Fail("Invalid API key");
+                }
+
+                if (inboxApiKey.ExpiryDate > 0 && DateTimeOffset.UtcNow.ToUnixTimeMilliseconds() > inboxApiKey.ExpiryDate)
+                {
+                    return AuthenticateResult.Fail("API key has expired");
+                }
+
+                inboxApiKey.LastUsedAt = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
+                await _inboxApiKeyRepository.UpsertAsync(inboxApiKey, k => k.Key == apiKey);
+
+                var claims = new[]
+                {
+                    new Claim("sub", inboxApiKey.UserId),
+                };
+                var identity = new ClaimsIdentity(claims, Scheme.Name);
+                var principal = new ClaimsPrincipal(identity);
+                var ticket = new AuthenticationTicket(principal, Scheme.Name);
+
+                return AuthenticateResult.Success(ticket);
+            }
+            catch (Exception ex)
+            {
+                Logger.LogError(ex, "Error validating inbox API key");
+                return AuthenticateResult.Fail("Error validating API key");
+            }
+        }
+    }
+}

Notesnook.API/Authorization/NotesnookUserRequirement.cs

@@ -1,36 +1,36 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Authorization;
-
-namespace Notesnook.API.Authorization
-{
-    public class NotesnookUserRequirement : AuthorizationHandler<NotesnookUserRequirement>, IAuthorizationRequirement
-    {
-        protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, NotesnookUserRequirement requirement)
-        {
-            var isInAudience = context.User.HasClaim("aud", "notesnook");
-            var hasRole = context.User.HasClaim("role", "notesnook");
-            if (isInAudience && hasRole)
-                context.Succeed(requirement);
-            return Task.CompletedTask;
-        }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authorization;
+
+namespace Notesnook.API.Authorization
+{
+    public class NotesnookUserRequirement : AuthorizationHandler<NotesnookUserRequirement>, IAuthorizationRequirement
+    {
+        protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, NotesnookUserRequirement requirement)
+        {
+            var isInAudience = context.User.HasClaim("aud", "notesnook");
+            var hasRole = context.User.HasClaim("role", "notesnook");
+            if (isInAudience && hasRole)
+                context.Succeed(requirement);
+            return Task.CompletedTask;
+        }
+    }
 }

Notesnook.API/Authorization/ProUserRequirement.cs

@@ -1,63 +0,0 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Linq;
-using System.Security.Claims;
-using System.Text.Json;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Http;
-
-namespace Notesnook.API.Authorization
-{
-    public class ProUserRequirement : AuthorizationHandler<ProUserRequirement>, IAuthorizationRequirement
-    {
-        private readonly Dictionary<string, string> pathErrorPhraseMap = new()
-        {
-            ["/s3"] = "upload attachments",
-            ["/s3/multipart"] = "upload attachments",
-        };
-        private readonly string[] allowedClaims = ["trial", "premium", "premium_canceled"];
-        protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, ProUserRequirement requirement)
-        {
-            PathString path = context.Resource is DefaultHttpContext httpContext ? httpContext.Request.Path : null;
-            var isProOrTrial = context.User.Claims.Any((c) => c.Type == "notesnook:status" && allowedClaims.Contains(c.Value));
-            if (isProOrTrial) context.Succeed(requirement);
-            else
-            {
-                var phrase = "continue";
-                foreach (var item in pathErrorPhraseMap)
-                {
-                    if (path != null && path.StartsWithSegments(item.Key))
-                        phrase = item.Value;
-                }
-                var error = $"Please upgrade to Pro to {phrase}.";
-                context.Fail(new AuthorizationFailureReason(this, error));
-            }
-            return Task.CompletedTask;
-        }
-
-        public override Task HandleAsync(AuthorizationHandlerContext context)
-        {
-            return this.HandleRequirementAsync(context, this);
-        }
-    }
-}

Notesnook.API/Authorization/SyncRequirement.cs

@@ -43,16 +43,16 @@ namespace Notesnook.API.Authorization
             PathString path = context.Resource is DefaultHttpContext httpContext ? httpContext.Request.Path : null;
             var result = this.IsAuthorized(context.User, path);
             if (result.Succeeded) context.Succeed(requirement);
-            else if (result.AuthorizationFailure.FailureReasons.Any())
+            else if (result.AuthorizationFailure?.FailureReasons.Any() == true)
                 context.Fail(result.AuthorizationFailure.FailureReasons.First());
             else context.Fail();
 
             return Task.CompletedTask;
         }
 
-        public PolicyAuthorizationResult IsAuthorized(ClaimsPrincipal User, PathString requestPath)
+        public PolicyAuthorizationResult IsAuthorized(ClaimsPrincipal? User, PathString requestPath)
         {
-            var id = User.FindFirstValue("sub");
+            var id = User?.FindFirstValue("sub");
 
             if (string.IsNullOrEmpty(id))
             {
@@ -63,11 +63,11 @@ namespace Notesnook.API.Authorization
                 return PolicyAuthorizationResult.Forbid(AuthorizationFailure.Failed(reason));
             }
 
-            var hasSyncScope = User.HasClaim("scope", "notesnook.sync");
-            var isInAudience = User.HasClaim("aud", "notesnook");
-            var hasRole = User.HasClaim("role", "notesnook");
+            var hasSyncScope = User?.HasClaim("scope", "notesnook.sync") ?? false;
+            var isInAudience = User?.HasClaim("aud", "notesnook") ?? false;
+            var hasRole = User?.HasClaim("role", "notesnook") ?? false;
 
-            var isEmailVerified = User.HasClaim("verified", "true");
+            var isEmailVerified = User?.HasClaim("verified", "true") ?? false;
 
             if (!isEmailVerified)
             {

Notesnook.API/Constants.cs

@@ -14,5 +14,9 @@ namespace Notesnook.API
         public const string TagsKey = "tags";
         public const string ColorsKey = "colors";
         public const string VaultsKey = "vaults";
+        public const string InboxItemsKey = "inbox_items";
+        public const string InboxApiKeysKey = "inbox_api_keys";
+        public const string SyncDevicesKey = "sync_devices";
+        public const string DeviceIdsChunksKey = "device_ids_chunks";
     }
 }

Notesnook.API/Controllers/AnnouncementController.cs

@@ -1,69 +1,82 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Mvc;
-using MongoDB.Driver;
-using Notesnook.API.Models;
-using Streetwriters.Data.Repositories;
-
-namespace Notesnook.API.Controllers
-{
-    // TODO: this should be moved out into its own microservice
-    [ApiController]
-    [Route("announcements")]
-    public class AnnouncementController : ControllerBase
-    {
-        private Repository<Announcement> Announcements { get; set; }
-        public AnnouncementController(Repository<Announcement> announcements)
-        {
-            Announcements = announcements;
-        }
-
-        [HttpGet("active")]
-        [AllowAnonymous]
-        public async Task<IActionResult> GetActiveAnnouncements([FromQuery] string userId)
-        {
-            var totalActive = await Announcements.Collection.CountDocumentsAsync(Builders<Announcement>.Filter.Eq("IsActive", true));
-            if (totalActive <= 0) return Ok(new Announcement[] { });
-
-            var announcements = (await Announcements.FindAsync((a) => a.IsActive)).Where((a) => a.UserIds == null || a.UserIds.Length == 0 || a.UserIds.Contains(userId));
-            foreach (var announcement in announcements)
-            {
-                if (announcement.UserIds != null && !announcement.UserIds.Contains(userId)) continue;
-
-                foreach (var item in announcement.Body)
-                {
-                    if (item.Type != "callToActions") continue;
-                    foreach (var action in item.Actions)
-                    {
-                        if (action.Type != "link") continue;
-
-                        action.Data = action.Data.Replace("{{UserId}}", userId ?? "0");
-                    }
-                }
-            }
-            return Ok(announcements);
-        }
-    }
-}
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using AngleSharp.Text;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using MongoDB.Driver;
+using Notesnook.API.Accessors;
+using Notesnook.API.Models;
+using Streetwriters.Common;
+using Streetwriters.Common.Accessors;
+using Streetwriters.Common.Interfaces;
+using Streetwriters.Common.Models;
+using Streetwriters.Data.Repositories;
+
+namespace Notesnook.API.Controllers
+{
+    // TODO: this should be moved out into its own microservice
+    [ApiController]
+    [Route("announcements")]
+    public class AnnouncementController(Repository<Announcement> announcements, WampServiceAccessor serviceAccessor) : ControllerBase
+    {
+        [HttpGet("active")]
+        [AllowAnonymous]
+        public async Task<IActionResult> GetActiveAnnouncements([FromQuery] string? userId)
+        {
+            var filter = Builders<Announcement>.Filter.Eq(x => x.IsActive, true);
+            if (!string.IsNullOrEmpty(userId))
+            {
+                var userFilter = Builders<Announcement>.Filter.Or(
+                    Builders<Announcement>.Filter.Eq(x => x.UserIds, null),
+                    Builders<Announcement>.Filter.Size(x => x.UserIds, 0),
+                    Builders<Announcement>.Filter.AnyEq(x => x.UserIds, userId)
+                );
+                filter = Builders<Announcement>.Filter.And(filter, userFilter);
+            }
+            var userAnnouncements = await announcements.Collection.Find(filter).ToListAsync();
+            foreach (var announcement in userAnnouncements)
+            {
+                if (userId != null && announcement.UserIds != null && !announcement.UserIds.Contains(userId)) continue;
+
+                foreach (var item in announcement.Body)
+                {
+                    if (item.Type != "callToActions") continue;
+                    foreach (var action in item.Actions)
+                    {
+                        if (action.Type != "link" || action.Data == null) continue;
+
+                        action.Data = action.Data.Replace("{{UserId}}", userId ?? "");
+
+                        if (action.Data.Contains("{{Email}}"))
+                        {
+                            var user = string.IsNullOrEmpty(userId) ? null : await serviceAccessor.UserAccountService.GetUserAsync(Clients.Notesnook.Id, userId);
+                            action.Data = action.Data.Replace("{{Email}}", user?.Email ?? "");
+                        }
+                    }
+                }
+            }
+            return Ok(userAnnouncements);
+        }
+    }
+}

Notesnook.API/Controllers/InboxController.cs

@@ -0,0 +1,206 @@
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Security.Claims;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using MongoDB.Bson;
+using Notesnook.API.Authorization;
+using Notesnook.API.Models;
+using Notesnook.API.Services;
+using Streetwriters.Common;
+using Streetwriters.Common.Messages;
+using Streetwriters.Data.Repositories;
+
+namespace Notesnook.API.Controllers
+{
+    [ApiController]
+    [Route("inbox")]
+    public class InboxController(
+            Repository<InboxApiKey> inboxApiKeysRepository,
+            Repository<UserSettings> userSettingsRepository,
+            Repository<InboxSyncItem> inboxItemsRepository,
+            SyncDeviceService syncDeviceService,
+            ILogger<InboxController> logger) : ControllerBase
+    {
+
+        [HttpGet("api-keys")]
+        [Authorize(Policy = "Notesnook")]
+        public async Task<IActionResult> GetApiKeysAsync()
+        {
+            var userId = User.GetUserId();
+            try
+            {
+                var apiKeys = await inboxApiKeysRepository.FindAsync(t => t.UserId == userId);
+                return Ok(apiKeys);
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Couldn't get inbox api keys for user {UserId}", userId);
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+
+        [HttpPost("api-keys")]
+        [Authorize(Policy = "Notesnook")]
+        public async Task<IActionResult> CreateApiKeyAsync([FromBody] InboxApiKey request)
+        {
+            var userId = User.GetUserId();
+            try
+            {
+                if (string.IsNullOrWhiteSpace(request.Name))
+                {
+                    return BadRequest(new { error = "Api key name is required." });
+                }
+                if (request.ExpiryDate <= -1)
+                {
+                    return BadRequest(new { error = "Valid expiry date is required." });
+                }
+
+                var count = await inboxApiKeysRepository.CountAsync(t => t.UserId == userId);
+                if (count >= 10)
+                {
+                    return BadRequest(new { error = "Maximum of 10 inbox api keys allowed." });
+                }
+
+                var inboxApiKey = new InboxApiKey
+                {
+                    UserId = userId,
+                    Name = request.Name,
+                    DateCreated = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
+                    ExpiryDate = request.ExpiryDate,
+                    LastUsedAt = 0
+                };
+                await inboxApiKeysRepository.InsertAsync(inboxApiKey);
+                return Ok(inboxApiKey);
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Couldn't create inbox api key for {UserId}.", userId);
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+
+        [HttpDelete("api-keys/{apiKey}")]
+        [Authorize(Policy = "Notesnook")]
+        public async Task<IActionResult> DeleteApiKeyAsync(string apiKey)
+        {
+            var userId = User.GetUserId();
+            try
+            {
+                if (string.IsNullOrWhiteSpace(apiKey))
+                {
+                    return BadRequest(new { error = "Api key is required." });
+                }
+
+                await inboxApiKeysRepository.DeleteAsync(t => t.UserId == userId && t.Key == apiKey);
+                return Ok(new { message = "Api key deleted successfully." });
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Couldn't delete inbox api key for user {UserId}", userId);
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+
+        [HttpGet("public-encryption-key")]
+        [Authorize(Policy = InboxApiKeyAuthenticationDefaults.AuthenticationScheme)]
+        public async Task<IActionResult> GetPublicKeyAsync()
+        {
+            var userId = User.GetUserId();
+            try
+            {
+                var userSetting = await userSettingsRepository.FindOneAsync(u => u.UserId == userId);
+                if (string.IsNullOrWhiteSpace(userSetting?.InboxKeys?.Public))
+                {
+                    return BadRequest(new { error = "Inbox public key is not configured." });
+                }
+                return Ok(new { key = userSetting.InboxKeys.Public });
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Couldn't get user's inbox's public key for user {UserId}", userId);
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+
+        [HttpPost("items")]
+        [Authorize(Policy = InboxApiKeyAuthenticationDefaults.AuthenticationScheme)]
+        public async Task<IActionResult> CreateInboxItemAsync([FromBody] InboxSyncItem request)
+        {
+            var userId = User.GetUserId();
+            try
+            {
+                if (request.Key.Algorithm != Algorithms.XSAL_X25519_7)
+                {
+                    return BadRequest(new { error = $"Only {Algorithms.XSAL_X25519_7} is supported for inbox item password." });
+                }
+                if (string.IsNullOrWhiteSpace(request.Key.Cipher))
+                {
+                    return BadRequest(new { error = "Inbox item password cipher is required." });
+                }
+                if (request.Key.Length <= 0)
+                {
+                    return BadRequest(new { error = "Valid inbox item password length is required." });
+                }
+                if (request.Algorithm != Algorithms.Default)
+                {
+                    return BadRequest(new { error = $"Only {Algorithms.Default} is supported for inbox item." });
+                }
+                if (request.Version <= 0)
+                {
+                    return BadRequest(new { error = "Valid inbox item version is required." });
+                }
+                if (string.IsNullOrWhiteSpace(request.Cipher) || string.IsNullOrWhiteSpace(request.IV))
+                {
+                    return BadRequest(new { error = "Inbox item cipher and iv is required." });
+                }
+                if (request.Length <= 0)
+                {
+                    return BadRequest(new { error = "Valid inbox item length is required." });
+                }
+
+                request.UserId = userId;
+                request.ItemId = ObjectId.GenerateNewId().ToString();
+                await inboxItemsRepository.InsertAsync(request);
+                await syncDeviceService.AddIdsToAllDevicesAsync(userId, [new(request.ItemId, "inbox_item")]);
+                await WampServers.MessengerServer.PublishMessageAsync(MessengerServerTopics.SendSSETopic, new SendSSEMessage
+                {
+                    OriginTokenId = null,
+                    UserId = userId,
+                    Message = new Message
+                    {
+                        Type = "triggerSync",
+                        Data = JsonSerializer.Serialize(new { reason = "Inbox items updated." })
+                    }
+                });
+                return Ok();
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Couldn't create inbox item for user {UserId}", userId);
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+    }
+}

Notesnook.API/Controllers/MonographsController.cs

@@ -18,14 +18,26 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Security.Claims;
-using System.Text.RegularExpressions;
+using System.Text.Json;
 using System.Threading.Tasks;
+using AngleSharp;
+using AngleSharp.Dom;
 using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using MongoDB.Bson;
 using MongoDB.Driver;
+using Notesnook.API.Authorization;
 using Notesnook.API.Models;
+using Notesnook.API.Services;
+using Streetwriters.Common;
+using Streetwriters.Common.Helpers;
+using Streetwriters.Common.Interfaces;
+using Streetwriters.Common.Messages;
 using Streetwriters.Data.Interfaces;
 using Streetwriters.Data.Repositories;
 
@@ -34,86 +46,174 @@ namespace Notesnook.API.Controllers
     [ApiController]
     [Route("monographs")]
     [Authorize("Sync")]
-    public class MonographsController : ControllerBase
+    public class MonographsController(Repository<Monograph> monographs, IURLAnalyzer analyzer, SyncDeviceService syncDeviceService, ILogger<MonographsController> logger) : ControllerBase
     {
-        private Repository<Monograph> Monographs { get; set; }
-        private readonly IUnitOfWork unit;
+        const string SVG_PIXEL = "<svg xmlns='http://www.w3.org/2000/svg' width='1' height='1'><circle r='9'/></svg>";
         private const int MAX_DOC_SIZE = 15 * 1024 * 1024;
-        public MonographsController(Repository<Monograph> monographs, IUnitOfWork unitOfWork)
+
+        private static FilterDefinition<Monograph> CreateMonographFilter(string userId, Monograph monograph)
         {
-            Monographs = monographs;
-            unit = unitOfWork;
+            var userIdFilter = Builders<Monograph>.Filter.Eq("UserId", userId);
+            monograph.ItemId ??= monograph.Id;
+            return ObjectId.TryParse(monograph.ItemId, out ObjectId id)
+            ? Builders<Monograph>.Filter
+                .And(userIdFilter,
+                    Builders<Monograph>.Filter.Or(
+                        Builders<Monograph>.Filter.Eq("_id", id), Builders<Monograph>.Filter.Eq("ItemId", monograph.ItemId)
+                    )
+                )
+            : Builders<Monograph>.Filter
+                .And(userIdFilter,
+                    Builders<Monograph>.Filter.Eq("ItemId", monograph.ItemId)
+                );
+        }
+
+        private static FilterDefinition<Monograph> CreateMonographFilter(string itemId)
+        {
+            return ObjectId.TryParse(itemId, out ObjectId id)
+            ? Builders<Monograph>.Filter.Or(
+                Builders<Monograph>.Filter.Eq("_id", id),
+                Builders<Monograph>.Filter.Eq("ItemId", itemId))
+            : Builders<Monograph>.Filter.Eq("ItemId", itemId);
+        }
+
+        private async Task<Monograph> FindMonographAsync(string userId, Monograph monograph)
+        {
+            var result = await monographs.Collection.FindAsync(CreateMonographFilter(userId, monograph), new FindOptions<Monograph>
+            {
+                Limit = 1
+            });
+            return await result.FirstOrDefaultAsync();
+        }
+
+        private async Task<Monograph> FindMonographAsync(string itemId)
+        {
+            var result = await monographs.Collection.FindAsync(CreateMonographFilter(itemId), new FindOptions<Monograph>
+            {
+                Limit = 1
+            });
+            return await result.FirstOrDefaultAsync();
         }
 
         [HttpPost]
-        public async Task<IActionResult> PublishAsync([FromBody] Monograph monograph)
+        public async Task<IActionResult> PublishAsync([FromQuery] string? deviceId, [FromBody] Monograph monograph)
         {
-            var userId = this.User.FindFirstValue("sub");
-            if (userId == null) return Unauthorized();
-
-            if (await Monographs.GetAsync(monograph.Id) != null) return base.Conflict("This monograph is already published.");
-
-            if (monograph.EncryptedContent == null)
-                monograph.CompressedContent = monograph.Content.CompressBrotli();
-            monograph.UserId = userId;
-            monograph.DatePublished = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
-
-
-            if (monograph.EncryptedContent?.Cipher.Length > MAX_DOC_SIZE || monograph.CompressedContent?.Length > MAX_DOC_SIZE)
-                return base.BadRequest("Monograph is too big. Max allowed size is 15mb.");
-
-            Monographs.Insert(monograph);
-
-            if (!await unit.Commit()) return BadRequest();
-            return Ok(new
+            try
             {
-                id = monograph.Id
-            });
+                var userId = this.User.GetUserId();
+                var jti = this.User.FindFirstValue("jti");
+
+                var existingMonograph = await FindMonographAsync(userId, monograph);
+                if (existingMonograph != null && !existingMonograph.Deleted) return await UpdateAsync(deviceId, monograph);
+
+                if (monograph.EncryptedContent == null)
+                    monograph.CompressedContent = (await CleanupContentAsync(User, monograph.Content)).CompressBrotli();
+                monograph.UserId = userId;
+                monograph.DatePublished = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
+
+                if (monograph.EncryptedContent?.Cipher.Length > MAX_DOC_SIZE || monograph.CompressedContent?.Length > MAX_DOC_SIZE)
+                    return base.BadRequest("Monograph is too big. Max allowed size is 15mb.");
+
+                if (existingMonograph != null)
+                {
+                    monograph.Id = existingMonograph.Id;
+                }
+                monograph.Deleted = false;
+                monograph.ViewCount = 0;
+                await monographs.Collection.ReplaceOneAsync(
+                    CreateMonographFilter(userId, monograph),
+                    monograph,
+                    new ReplaceOptions { IsUpsert = true }
+                );
+
+                await MarkMonographForSyncAsync(userId, monograph.ItemId ?? monograph.Id, deviceId, jti);
+
+                return Ok(new
+                {
+                    id = monograph.ItemId,
+                    datePublished = monograph.DatePublished
+                });
+            }
+            catch (Exception e)
+            {
+                logger.LogError(e, "Failed to publish monograph");
+                return BadRequest();
+            }
         }
 
         [HttpPatch]
-        public async Task<IActionResult> UpdateAsync([FromBody] Monograph monograph)
+        public async Task<IActionResult> UpdateAsync([FromQuery] string? deviceId, [FromBody] Monograph monograph)
         {
-            if (await Monographs.GetAsync(monograph.Id) == null) return NotFound();
-
-            if (monograph.EncryptedContent?.Cipher.Length > MAX_DOC_SIZE || monograph.CompressedContent?.Length > MAX_DOC_SIZE)
-                return base.BadRequest("Monograph is too big. Max allowed size is 15mb.");
-
-            if (monograph.EncryptedContent == null)
-                monograph.CompressedContent = monograph.Content.CompressBrotli();
-            else
-                monograph.Content = null;
-
-            monograph.DatePublished = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
-            Monographs.Update(monograph.Id, monograph);
-
-            if (!await unit.Commit()) return BadRequest();
-            return Ok(new
+            try
             {
-                id = monograph.Id
-            });
+                var userId = this.User.GetUserId();
+                var jti = this.User.FindFirstValue("jti");
+
+                var existingMonograph = await FindMonographAsync(userId, monograph);
+                if (existingMonograph == null || existingMonograph.Deleted)
+                {
+                    return NotFound();
+                }
+
+                if (monograph.EncryptedContent?.Cipher.Length > MAX_DOC_SIZE || monograph.CompressedContent?.Length > MAX_DOC_SIZE)
+                    return base.BadRequest("Monograph is too big. Max allowed size is 15mb.");
+
+                if (monograph.EncryptedContent == null)
+                    monograph.CompressedContent = (await CleanupContentAsync(User, monograph.Content)).CompressBrotli();
+                else
+                    monograph.Content = null;
+
+                monograph.DatePublished = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
+                var result = await monographs.Collection.UpdateOneAsync(
+                    CreateMonographFilter(userId, monograph),
+                    Builders<Monograph>.Update
+                    .Set(m => m.DatePublished, monograph.DatePublished)
+                    .Set(m => m.CompressedContent, monograph.CompressedContent)
+                    .Set(m => m.EncryptedContent, monograph.EncryptedContent)
+                    .Set(m => m.SelfDestruct, monograph.SelfDestruct)
+                    .Set(m => m.Title, monograph.Title)
+                    .Set(m => m.Password, monograph.Password)
+                );
+                if (!result.IsAcknowledged) return BadRequest();
+
+                await MarkMonographForSyncAsync(userId, monograph.ItemId ?? monograph.Id, deviceId, jti);
+
+                return Ok(new
+                {
+                    id = monograph.ItemId,
+                    datePublished = monograph.DatePublished
+                });
+            }
+            catch (Exception e)
+            {
+                logger.LogError(e, "Failed to update monograph");
+                return BadRequest();
+            }
         }
 
         [HttpGet]
         public async Task<IActionResult> GetUserMonographsAsync()
         {
-            var userId = this.User.FindFirstValue("sub");
-            if (userId == null) return Unauthorized();
+            var userId = this.User.GetUserId();
 
-            var monographs = (await Monographs.Collection.FindAsync(Builders<Monograph>.Filter.Eq("UserId", userId), new FindOptions<Monograph, ObjectWithId>
-            {
-                Projection = Builders<Monograph>.Projection.Include("_id"),
-            })).ToEnumerable();
-            return Ok(monographs.Select((m) => m.Id));
+            var userMonographs = (await monographs.Collection.FindAsync(
+                    Builders<Monograph>.Filter.And(
+                        Builders<Monograph>.Filter.Eq("UserId", userId),
+                        Builders<Monograph>.Filter.Ne("Deleted", true)
+                    )
+               , new FindOptions<Monograph, ObjectWithId>
+               {
+                   Projection = Builders<Monograph>.Projection.Include("_id").Include("ItemId"),
+               })).ToEnumerable();
+            return Ok(userMonographs.Select((m) => m.ItemId ?? m.Id));
         }
 
-
         [HttpGet("{id}")]
         [AllowAnonymous]
         public async Task<IActionResult> GetMonographAsync([FromRoute] string id)
         {
-            var monograph = await Monographs.GetAsync(id);
-            if (monograph == null)
+            var monograph = await FindMonographAsync(id);
+            if (monograph == null || monograph.Deleted)
             {
                 return NotFound(new
                 {
@@ -123,36 +223,162 @@ namespace Notesnook.API.Controllers
             }
 
             if (monograph.EncryptedContent == null)
-                monograph.Content = monograph.CompressedContent.DecompressBrotli();
+                monograph.Content = monograph.CompressedContent?.DecompressBrotli();
+            monograph.ItemId ??= monograph.Id;
             return Ok(monograph);
         }
 
-        [HttpGet("{id}/destruct")]
+        [HttpGet("{id}/view")]
         [AllowAnonymous]
-        public async Task<IActionResult> DestructMonographAsync([FromRoute] string id)
+        public async Task<IActionResult> TrackView([FromRoute] string id)
         {
-            var monograph = await Monographs.GetAsync(id);
-            if (monograph == null)
-            {
-                return NotFound(new
-                {
-                    error = "invalid_id",
-                    error_description = $"No such monograph found."
-                });
-            }
+            var monograph = await FindMonographAsync(id);
+            if (monograph == null || monograph.Deleted) return Content(SVG_PIXEL, "image/svg+xml");
+
+            var cookieName = $"viewed_{id}";
+            var hasVisitedBefore = Request.Cookies.ContainsKey(cookieName);
 
             if (monograph.SelfDestruct)
-                await Monographs.DeleteByIdAsync(monograph.Id);
+            {
+                await monographs.Collection.ReplaceOneAsync(
+                    CreateMonographFilter(monograph.UserId, monograph),
+                    new Monograph
+                    {
+                        ItemId = id,
+                        Id = monograph.Id,
+                        Deleted = true,
+                        UserId = monograph.UserId,
+                        ViewCount = 0
+                    }
+                );
+                await MarkMonographForSyncAsync(monograph.UserId, id);
+            }
+            else if (!hasVisitedBefore)
+            {
+                await monographs.Collection.UpdateOneAsync(
+                    CreateMonographFilter(monograph.UserId, monograph),
+                    Builders<Monograph>.Update.Inc(m => m.ViewCount, 1)
+                );
 
-            return Ok();
+                var cookieOptions = new CookieOptions
+                {
+                    Path = $"/monographs/{id}",
+                    HttpOnly = true,
+                    Secure = Request.IsHttps,
+                    Expires = DateTimeOffset.UtcNow.AddMonths(1)
+                };
+                Response.Cookies.Append(cookieName, "1", cookieOptions);
+            }
+
+            return Content(SVG_PIXEL, "image/svg+xml");
+        }
+
+        [HttpGet("{id}/analytics")]
+        public async Task<IActionResult> GetMonographAnalyticsAsync([FromRoute] string id)
+        {
+            if (!FeatureAuthorizationHelper.IsFeatureAllowed(Features.MONOGRAPH_ANALYTICS, Clients.Notesnook.Id, User))
+                return BadRequest(new { error = "Monograph analytics are only available on the Pro & Believer plans." });
+
+            var userId = this.User.GetUserId();
+            var monograph = await FindMonographAsync(id);
+            if (monograph == null || monograph.Deleted || monograph.UserId != userId)
+            {
+                return NotFound();
+            }
+
+            return Ok(new { totalViews = monograph.ViewCount });
         }
 
         [HttpDelete("{id}")]
-        public async Task<IActionResult> DeleteAsync([FromRoute] string id)
+        public async Task<IActionResult> DeleteAsync([FromQuery] string? deviceId, [FromRoute] string id)
         {
-            Monographs.DeleteById(id);
-            if (!await unit.Commit()) return BadRequest();
+            var userId = this.User.GetUserId();
+
+            var monograph = await FindMonographAsync(id);
+            if (monograph == null || monograph.Deleted)
+                return Ok();
+
+            var jti = this.User.FindFirstValue("jti");
+
+            await monographs.Collection.ReplaceOneAsync(
+                CreateMonographFilter(userId, monograph),
+                new Monograph
+                {
+                    ItemId = id,
+                    Id = monograph.Id,
+                    Deleted = true,
+                    UserId = monograph.UserId,
+                    ViewCount = 0
+                }
+            );
+
+            await MarkMonographForSyncAsync(userId, id, deviceId, jti);
+
             return Ok();
         }
+
+        private async Task MarkMonographForSyncAsync(string userId, string monographId, string? deviceId, string? jti)
+        {
+            if (deviceId == null) return;
+
+            await syncDeviceService.AddIdsToOtherDevicesAsync(userId, deviceId, [new(monographId, "monograph")]);
+        }
+
+        private async Task MarkMonographForSyncAsync(string userId, string monographId)
+        {
+            await syncDeviceService.AddIdsToAllDevicesAsync(userId, [new(monographId, "monograph")]);
+        }
+
+        private async Task<string> CleanupContentAsync(ClaimsPrincipal user, string? content)
+        {
+            if (string.IsNullOrEmpty(content)) return string.Empty;
+            if (Constants.IS_SELF_HOSTED) return content;
+            try
+            {
+                var json = JsonSerializer.Deserialize<MonographContent>(content) ?? throw new Exception("Invalid monograph content.");
+                var html = json.Data;
+
+                if (user.IsUserSubscribed())
+                {
+                    var config = Configuration.Default.WithDefaultLoader();
+                    var context = BrowsingContext.New(config);
+                    var document = await context.OpenAsync(r => r.Content(html));
+                    foreach (var element in document.QuerySelectorAll("a"))
+                    {
+                        var href = element.GetAttribute("href");
+                        if (string.IsNullOrEmpty(href)) continue;
+                        if (!await analyzer.IsURLSafeAsync(href))
+                        {
+                            logger.LogInformation("Malicious URL detected: {Url}", href);
+                            element.RemoveAttribute("href");
+                        }
+                    }
+                    html = document.ToHtml();
+                }
+                else
+                {
+                    var config = Configuration.Default.WithDefaultLoader();
+                    var context = BrowsingContext.New(config);
+                    var document = await context.OpenAsync(r => r.Content(html));
+                    foreach (var element in document.QuerySelectorAll("a,iframe,img,object,svg,button,link"))
+                    {
+                        foreach (var attr in element.Attributes)
+                            element.RemoveAttribute(attr.Name);
+                    }
+                    html = document.ToHtml();
+                }
+
+                return JsonSerializer.Serialize<MonographContent>(new MonographContent
+                {
+                    Type = json.Type,
+                    Data = html
+                });
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Failed to cleanup monograph content");
+                return content;
+            }
+        }
     }
 }

Notesnook.API/Controllers/S3Controller.cs

@@ -17,110 +17,199 @@ You should have received a copy of the Affero GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Mvc;
-using Amazon.S3.Model;
-using System.Threading.Tasks;
-using System.Security.Claims;
-using Notesnook.API.Interfaces;
 using System;
+using System.Net.Http;
+using System.Security.Claims;
+using System.Threading.Tasks;
+using Amazon.S3.Model;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http.Extensions;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using MongoDB.Driver;
+using Notesnook.API.Accessors;
+using Notesnook.API.Helpers;
+using Notesnook.API.Interfaces;
+using Notesnook.API.Models;
+using Streetwriters.Common;
+using Streetwriters.Common.Accessors;
+using Streetwriters.Common.Extensions;
+using Streetwriters.Common.Interfaces;
+using Streetwriters.Common.Models;
 
 namespace Notesnook.API.Controllers
 {
     [ApiController]
     [Route("s3")]
     [ResponseCache(NoStore = true, Location = ResponseCacheLocation.None)]
-    public class S3Controller : ControllerBase
+    [Authorize("Sync")]
+    public class S3Controller(IS3Service s3Service, ISyncItemsRepositoryAccessor repositories, WampServiceAccessor serviceAccessor, ILogger<S3Controller> logger) : ControllerBase
     {
-        private IS3Service S3Service { get; set; }
-        public S3Controller(IS3Service s3Service)
-        {
-            S3Service = s3Service;
-        }
-
         [HttpPut]
-        [Authorize("Pro")]
-        public IActionResult Upload([FromQuery] string name)
-        {
-            var userId = this.User.FindFirstValue("sub");
-            var url = S3Service.GetUploadObjectUrl(userId, name);
-            if (url == null) return BadRequest("Could not create signed url.");
-            return Ok(url);
-        }
-
-
-        [HttpGet("multipart")]
-        [Authorize("Pro")]
-        public async Task<IActionResult> MultipartUpload([FromQuery] string name, [FromQuery] int parts, [FromQuery] string uploadId)
-        {
-            var userId = this.User.FindFirstValue("sub");
-            try
-            {
-                var meta = await S3Service.StartMultipartUploadAsync(userId, name, parts, uploadId);
-                return Ok(meta);
-            }
-            catch (Exception ex) { return BadRequest(ex.Message); }
-        }
-
-        [HttpDelete("multipart")]
-        [Authorize("Pro")]
-        public async Task<IActionResult> AbortMultipartUpload([FromQuery] string name, [FromQuery] string uploadId)
-        {
-            var userId = this.User.FindFirstValue("sub");
-            try
-            {
-                await S3Service.AbortMultipartUploadAsync(userId, name, uploadId);
-                return Ok();
-            }
-            catch (Exception ex) { return BadRequest(ex.Message); }
-        }
-
-        [HttpPost("multipart")]
-        [Authorize("Pro")]
-        public async Task<IActionResult> CompleteMultipartUpload([FromBody] CompleteMultipartUploadRequest uploadRequest)
-        {
-            var userId = this.User.FindFirstValue("sub");
-            try
-            {
-                await S3Service.CompleteMultipartUploadAsync(userId, uploadRequest);
-                return Ok();
-            }
-            catch (Exception ex) { return BadRequest(ex.Message); }
-        }
-
-        [HttpGet]
-        [Authorize("Sync")]
-        public IActionResult Download([FromQuery] string name)
-        {
-            var userId = this.User.FindFirstValue("sub");
-            var url = S3Service.GetDownloadObjectUrl(userId, name);
-            if (url == null) return BadRequest("Could not create signed url.");
-            return Ok(url);
-        }
-
-        [HttpHead]
-        [Authorize("Sync")]
-        public async Task<IActionResult> Info([FromQuery] string name)
-        {
-            var userId = this.User.FindFirstValue("sub");
-            var size = await S3Service.GetObjectSizeAsync(userId, name);
-            HttpContext.Response.Headers.ContentLength = size;
-            return Ok();
-        }
-
-        [HttpDelete]
-        [Authorize("Sync")]
-        public async Task<IActionResult> DeleteAsync([FromQuery] string name)
+        public async Task<IActionResult> Upload([FromQuery] string name)
         {
             try
             {
-                var userId = this.User.FindFirstValue("sub");
-                await S3Service.DeleteObjectAsync(userId, name);
+                var userId = this.User.GetUserId();
+
+                var fileSize = HttpContext.Request.ContentLength ?? 0;
+                bool hasBody = fileSize > 0;
+
+                if (!hasBody)
+                {
+                    return Ok(Request.GetEncodedUrl() + "&access_token=" + Request.Headers.Authorization.ToString().Replace("Bearer ", ""));
+                }
+
+                if (Constants.IS_SELF_HOSTED) await UploadFileAsync(userId, name, fileSize);
+                else await UploadFileWithChecksAsync(userId, name, fileSize);
+
                 return Ok();
             }
             catch (Exception ex)
             {
-                return BadRequest(ex.Message);
+                logger.LogError(ex, "Error uploading attachment for user.");
+                return BadRequest(new { error = "Failed to upload attachment." });
+            }
+        }
+
+        private async Task UploadFileWithChecksAsync(string userId, string name, long fileSize)
+        {
+            var userSettings = await repositories.UsersSettings.FindOneAsync((u) => u.UserId == userId);
+
+            var subscription = await serviceAccessor.UserSubscriptionService.GetUserSubscriptionAsync(Clients.Notesnook.Id, userId) ?? throw new Exception("User subscription not found.");
+
+            if (StorageHelper.IsFileSizeExceeded(subscription, fileSize))
+                throw new Exception("Max file size exceeded.");
+
+            userSettings.StorageLimit = StorageHelper.RolloverStorageLimit(userSettings.StorageLimit);
+            if (StorageHelper.IsStorageLimitReached(subscription, userSettings.StorageLimit.Value + fileSize))
+                throw new Exception("Storage limit exceeded.");
+
+            var uploadedFileSize = await UploadFileAsync(userId, name, fileSize);
+
+            userSettings.StorageLimit.Value += uploadedFileSize;
+            await repositories.UsersSettings.Collection.UpdateOneAsync(
+                Builders<UserSettings>.Filter.Eq(u => u.UserId, userId),
+                Builders<UserSettings>.Update.Set(u => u.StorageLimit, userSettings.StorageLimit)
+            );
+
+            // extra check in case user sets wrong ContentLength in the HTTP header
+            if (uploadedFileSize != fileSize && StorageHelper.IsStorageLimitReached(subscription, userSettings.StorageLimit.Value))
+            {
+                await s3Service.DeleteObjectAsync(userId, name);
+                throw new Exception("Storage limit exceeded.");
+            }
+        }
+
+        private async Task<long> UploadFileAsync(string userId, string name, long fileSize)
+        {
+            var url = await s3Service.GetInternalUploadObjectUrlAsync(userId, name) ?? throw new Exception("Could not create signed url.");
+
+            var httpClient = new HttpClient();
+            var content = new StreamContent(HttpContext.Request.BodyReader.AsStream());
+            content.Headers.ContentLength = fileSize;
+            var response = await httpClient.SendRequestAsync<Response>(url, null, HttpMethod.Put, content);
+            if (!response.Success) throw new Exception(response.Content != null ? await response.Content.ReadAsStringAsync() : "Could not upload file.");
+
+            return await s3Service.GetObjectSizeAsync(userId, name);
+        }
+
+
+        [HttpGet("multipart")]
+        public async Task<IActionResult> MultipartUpload([FromQuery] string name, [FromQuery] int parts, [FromQuery] string? uploadId)
+        {
+            var userId = this.User.GetUserId();
+            try
+            {
+                var meta = await s3Service.StartMultipartUploadAsync(userId, name, parts, uploadId);
+                return Ok(meta);
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Error starting multipart upload for user.");
+                return BadRequest(new { error = "Failed to start multipart upload." });
+            }
+        }
+
+        [HttpDelete("multipart")]
+        public async Task<IActionResult> AbortMultipartUpload([FromQuery] string name, [FromQuery] string uploadId)
+        {
+            var userId = this.User.GetUserId();
+            try
+            {
+                await s3Service.AbortMultipartUploadAsync(userId, name, uploadId);
+                return Ok();
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Error aborting multipart upload for user.");
+                return BadRequest(new { error = "Failed to abort multipart upload." });
+            }
+        }
+
+        [HttpPost("multipart")]
+        public async Task<IActionResult> CompleteMultipartUpload([FromBody] CompleteMultipartUploadRequestWrapper uploadRequestWrapper)
+        {
+            var userId = this.User.GetUserId();
+            try
+            {
+                await s3Service.CompleteMultipartUploadAsync(userId, uploadRequestWrapper.ToRequest());
+                return Ok();
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Error completing multipart upload for user.");
+                return BadRequest(new { error = "Failed to complete multipart upload." });
+            }
+        }
+
+        [HttpGet]
+        public async Task<IActionResult> Download([FromQuery] string name)
+        {
+            try
+            {
+                var userId = this.User.GetUserId();
+                var url = await s3Service.GetDownloadObjectUrlAsync(userId, name);
+                if (url == null) return BadRequest("Could not create signed url.");
+                return Ok(url);
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Error generating download url for user.");
+                return BadRequest(new { error = "Failed to get attachment url." });
+            }
+        }
+
+        [HttpHead]
+        public async Task<IActionResult> Info([FromQuery] string name)
+        {
+            try
+            {
+                var userId = this.User.GetUserId();
+                var size = await s3Service.GetObjectSizeAsync(userId, name);
+                HttpContext.Response.Headers.ContentLength = size;
+                return Ok();
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Error getting object info for user.");
+                return BadRequest(new { error = "Failed to get attachment info." });
+            }
+        }
+
+        [HttpDelete]
+        public async Task<IActionResult> DeleteAsync([FromQuery] string name)
+        {
+            try
+            {
+                var userId = this.User.GetUserId();
+                await s3Service.DeleteObjectAsync(userId, name);
+                return Ok();
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Error deleting object for user.");
+                return BadRequest(new { error = "Failed to delete attachment." });
             }
         }
     }

Notesnook.API/Controllers/SyncDeviceController.cs

@@ -24,6 +24,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
 using Notesnook.API.Interfaces;
 using Notesnook.API.Models.Responses;
 using Notesnook.API.Services;
@@ -36,20 +37,20 @@ namespace Notesnook.API.Controllers
     [ApiController]
     [Authorize]
     [Route("devices")]
-    public class SyncDeviceController : ControllerBase
+    public class SyncDeviceController(SyncDeviceService syncDeviceService, ILogger<SyncDeviceController> logger) : ControllerBase
     {
         [HttpPost]
         public async Task<IActionResult> RegisterDevice([FromQuery] string deviceId)
         {
             try
             {
-                var userId = this.User.FindFirstValue("sub");
-                new SyncDeviceService(new SyncDevice(ref userId, ref deviceId)).RegisterDevice();
+                var userId = this.User.GetUserId();
+                await syncDeviceService.RegisterDeviceAsync(userId, deviceId);
                 return Ok();
             }
             catch (Exception ex)
             {
-                await Slogger<UsersController>.Error(nameof(UnregisterDevice), "Couldn't register device.", ex.ToString());
+                logger.LogError(ex, "Failed to register device: {DeviceId}", deviceId);
                 return BadRequest(new { error = ex.Message });
             }
         }
@@ -60,13 +61,13 @@ namespace Notesnook.API.Controllers
         {
             try
             {
-                var userId = this.User.FindFirstValue("sub");
-                new SyncDeviceService(new SyncDevice(ref userId, ref deviceId)).UnregisterDevice();
+                var userId = this.User.GetUserId();
+                await syncDeviceService.UnregisterDeviceAsync(userId, deviceId);
                 return Ok();
             }
             catch (Exception ex)
             {
-                await Slogger<UsersController>.Error(nameof(UnregisterDevice), "Couldn't unregister device.", ex.ToString());
+                logger.LogError(ex, "Failed to unregister device: {DeviceId}", deviceId);
                 return BadRequest(new { error = ex.Message });
             }
         }

Notesnook.API/Controllers/UsersController.cs

@@ -1,116 +1,116 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-using System.Security.Claims;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Http.Timeouts;
-using Microsoft.AspNetCore.Mvc;
-using Notesnook.API.Interfaces;
-using Notesnook.API.Models;
-using Notesnook.API.Models.Responses;
-using Streetwriters.Common;
-
-namespace Notesnook.API.Controllers
-{
-    [ApiController]
-    [Authorize]
-    [Route("users")]
-    public class UsersController(IUserService UserService) : ControllerBase
-    {
-        [HttpPost]
-        [AllowAnonymous]
-        public async Task<IActionResult> Signup()
-        {
-            try
-            {
-                await UserService.CreateUserAsync();
-                return Ok();
-            }
-            catch (Exception ex)
-            {
-                await Slogger<UsersController>.Error(nameof(Signup), "Couldn't sign up.", ex.ToString());
-                return BadRequest(new { error = ex.Message });
-            }
-        }
-
-        [HttpGet]
-        public async Task<IActionResult> GetUser()
-        {
-            var userId = User.FindFirstValue("sub");
-            try
-            {
-                UserResponse response = await UserService.GetUserAsync(userId);
-                if (!response.Success) return BadRequest(response);
-                return Ok(response);
-            }
-            catch (Exception ex)
-            {
-                await Slogger<UsersController>.Error(nameof(GetUser), "Couldn't get user for id.", userId, ex.ToString());
-                return BadRequest(new { error = ex.Message });
-            }
-        }
-
-        [HttpPatch]
-        public async Task<IActionResult> UpdateUser([FromBody] UserResponse user)
-        {
-            var userId = User.FindFirstValue("sub");
-            try
-            {
-                if (user.AttachmentsKey != null)
-                    await UserService.SetUserAttachmentsKeyAsync(userId, user.AttachmentsKey);
-                return Ok();
-            }
-            catch (Exception ex)
-            {
-                await Slogger<UsersController>.Error(nameof(GetUser), "Couldn't update user with id.", userId, ex.ToString());
-                return BadRequest(new { error = ex.Message });
-            }
-        }
-
-        [HttpPost("reset")]
-        public async Task<IActionResult> Reset([FromForm] bool removeAttachments)
-        {
-            var userId = this.User.FindFirstValue("sub");
-
-            if (await UserService.ResetUserAsync(userId, removeAttachments))
-                return Ok();
-            return BadRequest();
-        }
-
-        [HttpPost("delete")]
-        [RequestTimeout(5 * 60 * 1000)]
-        public async Task<IActionResult> Delete([FromForm] DeleteAccountForm form)
-        {
-            var userId = this.User.FindFirstValue("sub");
-            var jti = User.FindFirstValue("jti");
-            try
-            {
-                await UserService.DeleteUserAsync(userId, jti, form.Password);
-                return Ok();
-            }
-            catch (Exception ex)
-            {
-                await Slogger<UsersController>.Error(nameof(GetUser), "Couldn't delete user with id.", userId, ex.ToString());
-                return BadRequest(new { error = ex.Message });
-            }
-        }
-    }
-}
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Security.Claims;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http.Timeouts;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using Notesnook.API.Interfaces;
+using Notesnook.API.Models;
+using Notesnook.API.Models.Responses;
+using Streetwriters.Common;
+
+namespace Notesnook.API.Controllers
+{
+    [ApiController]
+    [Authorize]
+    [Route("users")]
+    public class UsersController(IUserService UserService, ILogger<UsersController> logger) : ControllerBase
+    {
+        [HttpPost]
+        [AllowAnonymous]
+        public async Task<IActionResult> Signup()
+        {
+            try
+            {
+                await UserService.CreateUserAsync();
+                return Ok();
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Failed to sign up user");
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+
+        [HttpGet]
+        public async Task<IActionResult> GetUser()
+        {
+            var userId = User.GetUserId();
+            try
+            {
+                UserResponse response = await UserService.GetUserAsync(userId);
+                if (!response.Success) return BadRequest();
+                return Ok(response);
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Failed to get user with id: {UserId}", userId);
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+
+        [HttpPatch]
+        public async Task<IActionResult> UpdateUser([FromBody] UserKeys keys)
+        {
+            var userId = User.GetUserId();
+            try
+            {
+                await UserService.SetUserKeysAsync(userId, keys);
+                return Ok();
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Failed to update user with id: {UserId}", userId);
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+
+        [HttpPost("reset")]
+        public async Task<IActionResult> Reset([FromForm] bool removeAttachments)
+        {
+            var userId = this.User.GetUserId();
+
+            if (await UserService.ResetUserAsync(userId, removeAttachments))
+                return Ok();
+            return BadRequest();
+        }
+
+        [HttpPost("delete")]
+        [RequestTimeout(5 * 60 * 1000)]
+        public async Task<IActionResult> Delete([FromForm] DeleteAccountForm form)
+        {
+            var userId = this.User.GetUserId();
+            var jti = User.FindFirstValue("jti");
+            try
+            {
+                await UserService.DeleteUserAsync(userId, jti, form.Password);
+                return Ok();
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Failed to delete user with id: {UserId}", userId);
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+    }
+}

Notesnook.API/Dockerfile

@@ -1,52 +1,50 @@
-FROM mcr.microsoft.com/dotnet/runtime-deps:8.0-alpine AS base
-WORKDIR /app
-EXPOSE 80
-EXPOSE 443
-
-FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:8.0-alpine AS build
-ARG TARGETARCH
-ARG BUILDPLATFORM
-ENV DOTNET_TC_QuickJitForLoops="1" DOTNET_ReadyToRun="0" DOTNET_TieredPGO="1" DOTNET_SYSTEM_GLOBALIZATION_INVARIANT="true"
-
-WORKDIR /src
-
-COPY Streetwriters.Data/*.csproj ./Streetwriters.Data/
-COPY Streetwriters.Common/*.csproj ./Streetwriters.Common/
-COPY Notesnook.API/*.csproj ./Notesnook.API/
-
-# restore dependencies
-RUN dotnet restore -v d /src/Notesnook.API/Notesnook.API.csproj --use-current-runtime
-
-COPY Streetwriters.Data/ ./Streetwriters.Data/
-COPY Streetwriters.Common/ ./Streetwriters.Common/
-COPY Notesnook.API/ ./Notesnook.API/
-
-WORKDIR /src/Notesnook.API/
-
-RUN dotnet build -c Release -o /app/build -a $TARGETARCH
-
-FROM build AS publish
-RUN dotnet publish -c Release -o /app/publish \
-  #--runtime alpine-x64 \
-  --self-contained true \
-  /p:TrimMode=partial \
-  /p:PublishTrimmed=true \
-  /p:PublishSingleFile=true \
-  /p:JsonSerializerIsReflectionEnabledByDefault=true \
-  -a $TARGETARCH
-
-FROM --platform=$BUILDPLATFORM base AS final
-ARG TARGETARCH
-ARG BUILDPLATFORM
-
-# create a new user and change directory ownership
-RUN adduser --disabled-password \
-  --home /app \
-  --gecos '' dotnetuser && chown -R dotnetuser /app
-
-# impersonate into the new user
-USER dotnetuser
-WORKDIR /app
-
-COPY --from=publish /app/publish .
+FROM mcr.microsoft.com/dotnet/runtime-deps:9.0-alpine AS base
+WORKDIR /app
+
+FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:9.0-alpine AS build
+ARG TARGETARCH
+ARG BUILDPLATFORM
+ENV DOTNET_TC_QuickJitForLoops="1" DOTNET_ReadyToRun="0" DOTNET_TieredPGO="1" DOTNET_SYSTEM_GLOBALIZATION_INVARIANT="true"
+
+WORKDIR /src
+
+COPY Streetwriters.Data/*.csproj ./Streetwriters.Data/
+COPY Streetwriters.Common/*.csproj ./Streetwriters.Common/
+COPY Notesnook.API/*.csproj ./Notesnook.API/
+
+# restore dependencies
+RUN dotnet restore -v d /src/Notesnook.API/Notesnook.API.csproj --use-current-runtime
+
+COPY Streetwriters.Data/ ./Streetwriters.Data/
+COPY Streetwriters.Common/ ./Streetwriters.Common/
+COPY Notesnook.API/ ./Notesnook.API/
+
+WORKDIR /src/Notesnook.API/
+
+RUN dotnet build -c Release -o /app/build -a $TARGETARCH
+
+FROM build AS publish
+RUN dotnet publish -c Release -o /app/publish \
+  #--runtime alpine-x64 \
+  --self-contained true \
+  /p:TrimMode=partial \
+  /p:PublishTrimmed=true \
+  /p:PublishSingleFile=true \
+  /p:JsonSerializerIsReflectionEnabledByDefault=true \
+  -a $TARGETARCH
+
+FROM --platform=$BUILDPLATFORM base AS final
+ARG TARGETARCH
+ARG BUILDPLATFORM
+
+# create a new user and change directory ownership
+RUN adduser --disabled-password \
+  --home /app \
+  --gecos '' dotnetuser && chown -R dotnetuser /app
+
+# impersonate into the new user
+USER dotnetuser
+WORKDIR /app
+
+COPY --from=publish /app/publish .
 ENTRYPOINT ["./Notesnook.API"]

Notesnook.API/EventSources/SyncEventCounterSource.cs

@@ -7,19 +7,17 @@ public sealed class SyncEventCounterSource : EventSource
 {
     public static readonly SyncEventCounterSource Log = new();
 
-    private Meter meter = new("Notesnook.API.Metrics.Sync", "1.0.0");
-    private Counter<int> fetchCounter;
-    private Counter<int> pushCounter;
-    private Counter<int> legacyFetchCounter;
-    private Counter<int> pushV2Counter;
-    private Counter<int> fetchV2Counter;
-    private Histogram<long> fetchV2Duration;
-    private Histogram<long> pushV2Duration;
+    private readonly Meter meter = new("Notesnook.API.Metrics.Sync", "1.0.0");
+    private readonly Counter<int> fetchCounter;
+    private readonly Counter<int> pushCounter;
+    private readonly Counter<int> pushV2Counter;
+    private readonly Counter<int> fetchV2Counter;
+    private readonly Histogram<long> fetchV2Duration;
+    private readonly Histogram<long> pushV2Duration;
     private SyncEventCounterSource()
     {
         fetchCounter = meter.CreateCounter<int>("sync.fetches", "fetches", "Total fetches");
         pushCounter = meter.CreateCounter<int>("sync.pushes", "pushes", "Total pushes");
-        legacyFetchCounter = meter.CreateCounter<int>("sync.legacy-fetches", "fetches", "Total legacy fetches");
         fetchV2Counter = meter.CreateCounter<int>("sync.v2.fetches", "fetches", "Total v2 fetches");
         pushV2Counter = meter.CreateCounter<int>("sync.v2.pushes", "pushes", "Total v2 pushes");
         fetchV2Duration = meter.CreateHistogram<long>("sync.v2.fetch_duration");
@@ -27,7 +25,6 @@ public sealed class SyncEventCounterSource : EventSource
     }
 
     public void Fetch() => fetchCounter.Add(1);
-    public void LegacyFetch() => legacyFetchCounter.Add(1);
     public void FetchV2() => fetchV2Counter.Add(1);
     public void PushV2() => pushV2Counter.Add(1);
     public void Push() => pushCounter.Add(1);
@@ -36,14 +33,7 @@ public sealed class SyncEventCounterSource : EventSource
 
     protected override void Dispose(bool disposing)
     {
-        legacyFetchCounter = null;
-        fetchV2Counter = null;
-        pushV2Counter = null;
-        pushCounter = null;
-        fetchCounter = null;
         meter.Dispose();
-        meter = null;
-
         base.Dispose(disposing);
     }
 }

Notesnook.API/Extensions/AuthorizationResultTransformer.cs

@@ -1,71 +1,62 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System.Linq;
-using System.Net;
-using System.Text.Json;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Authorization.Policy;
-using Microsoft.AspNetCore.Http;
-
-namespace Notesnook.API.Extensions
-{
-    public class AuthorizationResultTransformer : IAuthorizationMiddlewareResultHandler
-    {
-        private readonly IAuthorizationMiddlewareResultHandler _handler;
-
-        public AuthorizationResultTransformer()
-        {
-            _handler = new AuthorizationMiddlewareResultHandler();
-        }
-
-        public async Task HandleAsync(
-            RequestDelegate requestDelegate,
-            HttpContext httpContext,
-            AuthorizationPolicy authorizationPolicy,
-            PolicyAuthorizationResult policyAuthorizationResult)
-        {
-            var isWebsocket = httpContext.Request.Headers.Upgrade == "websocket";
-
-            if (!isWebsocket && policyAuthorizationResult.Forbidden && policyAuthorizationResult.AuthorizationFailure != null)
-            {
-                var error = string.Join("\n", policyAuthorizationResult.AuthorizationFailure.FailureReasons.Select((r) => r.Message));
-
-                if (!string.IsNullOrEmpty(error))
-                {
-                    httpContext.Response.StatusCode = (int)HttpStatusCode.Unauthorized;
-                    httpContext.Response.ContentType = "application/json";
-                    await httpContext.Response.WriteAsync(JsonSerializer.Serialize(new { error }));
-                    return;
-                }
-
-                await _handler.HandleAsync(requestDelegate, httpContext, authorizationPolicy, policyAuthorizationResult);
-            }
-            else if (isWebsocket)
-            {
-                await _handler.HandleAsync(requestDelegate, httpContext, authorizationPolicy, PolicyAuthorizationResult.Success());
-            }
-            else
-            {
-                await _handler.HandleAsync(requestDelegate, httpContext, authorizationPolicy, policyAuthorizationResult);
-            }
-        }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Linq;
+using System.Net;
+using System.Net.WebSockets;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Authorization.Policy;
+using Microsoft.AspNetCore.Http;
+
+namespace Notesnook.API.Extensions
+{
+    public class AuthorizationResultTransformer : IAuthorizationMiddlewareResultHandler
+    {
+        private readonly IAuthorizationMiddlewareResultHandler _handler;
+
+        public AuthorizationResultTransformer()
+        {
+            _handler = new AuthorizationMiddlewareResultHandler();
+        }
+
+        public async Task HandleAsync(
+            RequestDelegate requestDelegate,
+            HttpContext httpContext,
+            AuthorizationPolicy authorizationPolicy,
+            PolicyAuthorizationResult policyAuthorizationResult)
+        {
+            if (policyAuthorizationResult.Forbidden && policyAuthorizationResult.AuthorizationFailure != null)
+            {
+                var error = string.Join("\n", policyAuthorizationResult.AuthorizationFailure.FailureReasons.Select((r) => r.Message));
+                if (!string.IsNullOrEmpty(error))
+                {
+                    httpContext.Response.StatusCode = (int)HttpStatusCode.Unauthorized;
+                    httpContext.Response.ContentType = "application/json";
+                    await httpContext.Response.WriteAsync(JsonSerializer.Serialize(new { error }));
+                    return;
+                }
+            }
+            await _handler.HandleAsync(requestDelegate, httpContext, authorizationPolicy, policyAuthorizationResult);
+        }
+    }
 }

Notesnook.API/Extensions/ClaimsPrincipalExtensions.cs

@@ -0,0 +1,17 @@
+using System.Threading;
+using System;
+using System.Threading.Tasks;
+using System.Linq;
+
+namespace System.Security.Claims
+{
+    public static class ClaimsPrincipalExtensions
+    {
+        private readonly static string[] SUBSCRIBED_CLAIMS = ["believer", "education", "essential", "pro", "legacy_pro"];
+        public static bool IsUserSubscribed(this ClaimsPrincipal user)
+         => user.Claims.Any((c) => c.Type == "notesnook:status" && SUBSCRIBED_CLAIMS.Contains(c.Value));
+
+        public static string GetUserId(this ClaimsPrincipal user)
+        => user.FindFirstValue("sub") ?? throw new Exception("User ID not found in claims.");
+    }
+}

Notesnook.API/Extensions/TransactionHelper.cs

@@ -1,44 +1,44 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System.Threading;
-using System;
-using System.Threading.Tasks;
-
-namespace MongoDB.Driver
-{
-    public static class TransactionHelper
-    {
-        public static async Task StartTransaction(this IMongoClient client, Action<CancellationToken> operate, CancellationToken ct)
-        {
-            using (var session = await client.StartSessionAsync())
-            {
-                var transactionOptions = new TransactionOptions(readPreference: ReadPreference.Nearest, readConcern: ReadConcern.Local, writeConcern: WriteConcern.WMajority);
-                await session.WithTransactionAsync((handle, token) =>
-                {
-                    return Task.Run(() =>
-                    {
-                        operate(token);
-                        return true;
-                    });
-                }, transactionOptions, ct);
-            }
-        }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.Threading;
+using System;
+using System.Threading.Tasks;
+
+namespace MongoDB.Driver
+{
+    public static class TransactionHelper
+    {
+        public static async Task StartTransaction(this IMongoClient client, Action<CancellationToken> operate, CancellationToken ct)
+        {
+            using (var session = await client.StartSessionAsync())
+            {
+                var transactionOptions = new TransactionOptions(readPreference: ReadPreference.Nearest, readConcern: ReadConcern.Local, writeConcern: WriteConcern.WMajority);
+                await session.WithTransactionAsync((handle, token) =>
+                {
+                    return Task.Run(() =>
+                    {
+                        operate(token);
+                        return true;
+                    });
+                }, transactionOptions, ct);
+            }
+        }
+    }
 }

Notesnook.API/Helpers/S3FailoverHelper.cs

@@ -0,0 +1,414 @@
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Amazon.S3;
+using Amazon.S3.Model;
+using Microsoft.Extensions.Logging;
+
+namespace Notesnook.API.Helpers
+{
+    /// <summary>
+    /// Configuration for S3 failover behavior
+    /// </summary>
+    public class S3FailoverConfig
+    {
+        /// <summary>
+        /// Maximum number of retry attempts per endpoint
+        /// </summary>
+        public int MaxRetries { get; set; } = 3;
+
+        /// <summary>
+        /// Delay between retries in milliseconds
+        /// </summary>
+        public int RetryDelayMs { get; set; } = 1000;
+
+        /// <summary>
+        /// Whether to use exponential backoff for retries
+        /// </summary>
+        public bool UseExponentialBackoff { get; set; } = true;
+
+        /// <summary>
+        /// Whether to allow failover for write operations (PUT, POST, DELETE).
+        /// Default is false to prevent data consistency issues.
+        /// </summary>
+        public bool AllowWriteFailover { get; set; } = false;
+
+        /// <summary>
+        /// List of exception types that should trigger failover
+        /// </summary>
+        public HashSet<Type> FailoverExceptions { get; set; } = new()
+        {
+            typeof(AmazonS3Exception),
+            typeof(System.Net.Http.HttpRequestException),
+            typeof(System.Net.Sockets.SocketException),
+            typeof(System.Threading.Tasks.TaskCanceledException),
+            typeof(TimeoutException)
+        };
+
+        /// <summary>
+        /// List of S3 error codes that should trigger failover
+        /// </summary>
+        public HashSet<string> FailoverErrorCodes { get; set; } = new()
+        {
+            "ServiceUnavailable",
+            "SlowDown",
+            "InternalError",
+            "RequestTimeout"
+        };
+    }
+
+    /// <summary>
+    /// Result of a failover operation
+    /// </summary>
+    public class S3FailoverResult<T>
+    {
+        public T? Result { get; set; }
+        public bool UsedFailover { get; set; }
+        public int ClientIndex { get; set; } = 0;
+        public int AttemptsUsed { get; set; }
+        public Exception? LastException { get; set; }
+    }
+
+    /// <summary>
+    /// Helper class for S3 operations with automatic failover to multiple endpoints
+    /// </summary>
+    public class S3FailoverHelper
+    {
+        private readonly List<AmazonS3Client> clients;
+        private readonly S3FailoverConfig config;
+        private readonly ILogger? logger;
+
+        /// <summary>
+        /// Initialize with a list of S3 clients (first is primary, rest are failover endpoints)
+        /// </summary>
+        public S3FailoverHelper(
+            IEnumerable<AmazonS3Client> clients,
+            S3FailoverConfig? config = null,
+            ILogger? logger = null)
+        {
+            if (clients == null) throw new ArgumentNullException(nameof(clients));
+            this.clients = new List<AmazonS3Client>(clients);
+            if (this.clients.Count == 0) throw new ArgumentException("At least one S3 client is required", nameof(clients));
+            this.config = config ?? new S3FailoverConfig();
+            this.logger = logger;
+        }
+
+        /// <summary>
+        /// Initialize with params array of S3 clients
+        /// </summary>
+        public S3FailoverHelper(
+            S3FailoverConfig? config = null,
+            ILogger? logger = null,
+            params AmazonS3Client[] clients)
+        {
+            if (clients == null || clients.Length == 0)
+                throw new ArgumentException("At least one S3 client is required", nameof(clients));
+            this.clients = new List<AmazonS3Client>(clients);
+            this.config = config ?? new S3FailoverConfig();
+            this.logger = logger;
+        }
+
+        /// <summary>
+        /// Execute an S3 operation with automatic failover
+        /// </summary>
+        /// <param name="operation">The S3 operation to execute</param>
+        /// <param name="operationName">Name of the operation for logging</param>
+        /// <param name="isWriteOperation">Whether this is a write operation (PUT/POST/DELETE). Write operations only use primary endpoint by default.</param>
+        public async Task<T> ExecuteWithFailoverAsync<T>(
+            Func<AmazonS3Client, Task<T>> operation,
+            string operationName = "S3Operation",
+            bool isWriteOperation = false)
+        {
+            var result = await ExecuteWithFailoverInternalAsync(operation, operationName, isWriteOperation);
+            if (result.Result == null)
+            {
+                throw result.LastException ?? new Exception($"Failed to execute {operationName} on all endpoints");
+            }
+            return result.Result;
+        }
+
+        /// <summary>
+        /// Execute an S3 operation with automatic failover and return detailed result
+        /// </summary>
+        /// <param name="operation">The S3 operation to execute</param>
+        /// <param name="operationName">Name of the operation for logging</param>
+        /// <param name="isWriteOperation">Whether this is a write operation (PUT/POST/DELETE). Write operations only use primary endpoint by default.</param>
+        private async Task<S3FailoverResult<T>> ExecuteWithFailoverInternalAsync<T>(
+            Func<AmazonS3Client, Task<T>> operation,
+            string operationName = "S3Operation",
+            bool isWriteOperation = false)
+        {
+            var result = new S3FailoverResult<T>();
+            Exception? lastException = null;
+
+            // Determine max clients to try based on write operation flag
+            var maxClientsToTry = (isWriteOperation && !config.AllowWriteFailover) ? 1 : clients.Count;
+
+            if (isWriteOperation && !config.AllowWriteFailover && clients.Count > 1)
+            {
+                logger?.LogDebug(
+                    "Write operation {Operation} will only use primary endpoint. Failover is disabled for write operations.",
+                    operationName);
+            }
+
+            // Try each client in sequence (first is primary, rest are failovers)
+            for (int i = 0; i < maxClientsToTry; i++)
+            {
+                var client = clients[i];
+                var clientName = i == 0 ? "primary" : $"failover-{i}";
+                var isPrimary = i == 0;
+
+                if (!isPrimary && lastException != null)
+                {
+                    logger?.LogWarning(lastException,
+                        "Previous S3 endpoint failed for {Operation}. Attempting {ClientName} (endpoint {Index}/{Total}).",
+                        operationName, clientName, i + 1, maxClientsToTry);
+                }
+
+                var (success, value, exception, attempts) = await TryExecuteAsync(client, operation, operationName, clientName);
+                result.AttemptsUsed += attempts;
+
+                if (success && value != null)
+                {
+                    result.Result = value;
+                    result.UsedFailover = !isPrimary;
+                    result.ClientIndex = i;
+
+                    if (!isPrimary)
+                    {
+                        logger?.LogInformation(
+                            "Successfully failed over to {ClientName} S3 endpoint for {Operation}",
+                            clientName, operationName);
+                    }
+
+                    return result;
+                }
+
+                lastException = exception;
+
+                // If this is not the last client and should retry, log and continue
+                if (i < maxClientsToTry - 1 && ShouldFailover(exception))
+                {
+                    logger?.LogWarning(exception,
+                        "Endpoint {ClientName} failed for {Operation}. {Remaining} endpoint(s) remaining.",
+                        clientName, operationName, maxClientsToTry - i - 1);
+                }
+            }
+
+            // All clients failed
+            result.LastException = lastException;
+            logger?.LogError(lastException,
+                "All S3 endpoints failed for {Operation}. Total endpoints tried: {EndpointCount}, Total attempts: {Attempts}",
+                operationName, maxClientsToTry, result.AttemptsUsed);
+
+            return result;
+        }        /// <summary>
+                 /// Try to execute an operation with retries
+                 /// </summary>
+        private async Task<(bool success, T? value, Exception? exception, int attempts)> TryExecuteAsync<T>(
+            AmazonS3Client client,
+            Func<AmazonS3Client, Task<T>> operation,
+            string operationName,
+            string endpointName)
+        {
+            Exception? lastException = null;
+            int attempts = 0;
+
+            for (int retry = 0; retry <= config.MaxRetries; retry++)
+            {
+                attempts++;
+                try
+                {
+                    var result = await operation(client);
+                    return (true, result, null, attempts);
+                }
+                catch (Exception ex)
+                {
+                    lastException = ex;
+
+                    if (retry < config.MaxRetries && ShouldRetry(ex))
+                    {
+                        var delay = CalculateRetryDelay(retry);
+                        logger?.LogWarning(ex,
+                            "Attempt {Attempt}/{MaxAttempts} failed for {Operation} on {Endpoint}. Retrying in {Delay}ms",
+                            retry + 1, config.MaxRetries + 1, operationName, endpointName, delay);
+
+                        await Task.Delay(delay);
+                    }
+                    else
+                    {
+                        logger?.LogError(ex,
+                            "Operation {Operation} failed on {Endpoint} after {Attempts} attempts",
+                            operationName, endpointName, attempts);
+                        break;
+                    }
+                }
+            }
+
+            return (false, default, lastException, attempts);
+        }
+
+        /// <summary>
+        /// Determine if an exception should trigger a retry
+        /// </summary>
+        private bool ShouldRetry(Exception exception)
+        {
+            // Check if exception type is in the retry list
+            var exceptionType = exception.GetType();
+            if (config.FailoverExceptions.Contains(exceptionType))
+            {
+                // For S3 exceptions, check error codes
+                if (exception is AmazonS3Exception s3Exception)
+                {
+                    return config.FailoverErrorCodes.Contains(s3Exception.ErrorCode);
+                }
+                return true;
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Determine if an exception should trigger failover to secondary endpoint
+        /// </summary>
+        private bool ShouldFailover(Exception? exception)
+        {
+            if (exception == null) return false;
+            return ShouldRetry(exception);
+        }
+
+        /// <summary>
+        /// Calculate delay for retry based on retry attempt number
+        /// </summary>
+        private int CalculateRetryDelay(int retryAttempt)
+        {
+            if (!config.UseExponentialBackoff)
+            {
+                return config.RetryDelayMs;
+            }
+
+            // Exponential backoff: delay * 2^retryAttempt
+            return config.RetryDelayMs * (int)Math.Pow(2, retryAttempt);
+        }
+
+        /// <summary>
+        /// Execute a void operation with automatic failover
+        /// </summary>
+        /// <param name="operation">The S3 operation to execute</param>
+        /// <param name="operationName">Name of the operation for logging</param>
+        /// <param name="isWriteOperation">Whether this is a write operation (PUT/POST/DELETE). Write operations only use primary endpoint by default.</param>
+        public async Task ExecuteWithFailoverAsync(
+            Func<AmazonS3Client, Task> operation,
+            string operationName = "S3Operation",
+            bool isWriteOperation = false)
+        {
+            await ExecuteWithFailoverAsync<object?>(async (client) =>
+            {
+                await operation(client);
+                return null;
+            }, operationName, isWriteOperation);
+        }
+    }
+
+    public static class S3ClientFactory
+    {
+        public static List<AmazonS3Client> CreateS3Clients(
+            string serviceUrls,
+            string regions,
+            string accessKeyIds,
+            string secretKeys,
+            bool forcePathStyle = true)
+        {
+            if (string.IsNullOrWhiteSpace(serviceUrls))
+                return new List<AmazonS3Client>();
+
+            var urls = SplitAndTrim(serviceUrls);
+            var regionList = SplitAndTrim(regions);
+            var keyIds = SplitAndTrim(accessKeyIds);
+            var secrets = SplitAndTrim(secretKeys);
+
+            if (urls.Length != regionList.Length ||
+                urls.Length != keyIds.Length ||
+                urls.Length != secrets.Length)
+            {
+                throw new ArgumentException("All S3 configuration parameters must have the same number of values");
+            }
+
+            var clients = new List<AmazonS3Client>();
+
+            for (int i = 0; i < urls.Length; i++)
+            {
+                var url = urls[i];
+                if (string.IsNullOrWhiteSpace(url))
+                    continue;
+
+                // Get corresponding values from other arrays
+                var region = regionList[i];
+                var keyId = keyIds[i];
+                var secret = secrets[i];
+
+                // Validate that all required values are present
+                if (string.IsNullOrWhiteSpace(region) ||
+                    string.IsNullOrWhiteSpace(keyId) ||
+                    string.IsNullOrWhiteSpace(secret))
+                {
+                    System.Diagnostics.Debug.WriteLine(
+                        $"Skipping S3 client at index {i}: Missing required values (URL={url}, Region={region}, KeyId={keyId?.Length > 0}, Secret={secret?.Length > 0})");
+                    continue;
+                }
+
+                try
+                {
+                    var config = new AmazonS3Config
+                    {
+                        ServiceURL = url,
+                        AuthenticationRegion = region,
+                        ForcePathStyle = forcePathStyle,
+                        SignatureMethod = Amazon.Runtime.SigningAlgorithm.HmacSHA256,
+                        SignatureVersion = "4"
+                    };
+
+                    var client = new AmazonS3Client(keyId, secret, config);
+                    clients.Add(client);
+                }
+                catch (Exception ex)
+                {
+                    // Log configuration error but continue with other clients
+                    System.Diagnostics.Debug.WriteLine($"Failed to create S3 client for URL {url}: {ex.Message}");
+                }
+            }
+
+            return clients;
+        }
+
+        private static string[] SplitAndTrim(string? input)
+        {
+            if (string.IsNullOrWhiteSpace(input))
+                return Array.Empty<string>();
+
+            return input.Split(';', StringSplitOptions.None)
+                       .Select(s => s.Trim())
+                       .ToArray();
+        }
+    }
+}

Notesnook.API/Helpers/StorageHelper.cs

@@ -0,0 +1,79 @@
+using System;
+using System.Collections.Generic;
+using Notesnook.API.Models;
+using Streetwriters.Common.Enums;
+using Streetwriters.Common.Models;
+
+namespace Notesnook.API.Helpers
+{
+    class StorageHelper
+    {
+        const long MB = 1024 * 1024;
+        const long GB = 1024 * MB;
+        public readonly static Dictionary<SubscriptionPlan, long> MAX_STORAGE_PER_MONTH = new()
+            {
+                { SubscriptionPlan.FREE, 50L * MB },
+                { SubscriptionPlan.ESSENTIAL, GB },
+                { SubscriptionPlan.PRO, 10L * GB },
+                { SubscriptionPlan.EDUCATION, 10L * GB },
+                { SubscriptionPlan.BELIEVER, 25L * GB },
+                { SubscriptionPlan.LEGACY_PRO, -1 }
+            };
+        public readonly static Dictionary<SubscriptionPlan, long> MAX_FILE_SIZE = new()
+            {
+                { SubscriptionPlan.FREE, 10 * MB },
+                { SubscriptionPlan.ESSENTIAL, 100 * MB },
+                { SubscriptionPlan.PRO, 1L * GB },
+                { SubscriptionPlan.EDUCATION, 1L * GB },
+                { SubscriptionPlan.BELIEVER, 5L * GB },
+                { SubscriptionPlan.LEGACY_PRO, 512 * MB }
+            };
+
+        public static long GetStorageLimitForPlan(Subscription subscription)
+        {
+            return MAX_STORAGE_PER_MONTH[subscription.Plan];
+        }
+
+        public static long GetFileSizeLimitForPlan(Subscription subscription)
+        {
+            return MAX_FILE_SIZE[subscription.Plan];
+        }
+
+        public static bool IsStorageLimitReached(Subscription subscription, long limit)
+        {
+            var storageLimit = GetStorageLimitForPlan(subscription);
+            if (storageLimit == -1) return false;
+            return limit > storageLimit;
+        }
+
+        public static bool IsFileSizeExceeded(Subscription subscription, long fileSize)
+        {
+            var maxFileSize = MAX_FILE_SIZE[subscription.Plan];
+            return fileSize > maxFileSize;
+        }
+
+        public static Limit RolloverStorageLimit(Limit? limit)
+        {
+            var updatedAt = DateTimeOffset.FromUnixTimeMilliseconds(limit?.UpdatedAt ?? 0);
+            if (limit == null || DateTimeOffset.UtcNow.Year > updatedAt.Year || DateTimeOffset.UtcNow.Month > updatedAt.Month)
+            {
+                limit = new Limit { UpdatedAt = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(), Value = 0 };
+                return limit;
+            }
+            return limit;
+        }
+
+        private static readonly string[] sizes = ["B", "KB", "MB", "GB", "TB"];
+        public static string FormatBytes(long size)
+        {
+            int order = 0;
+            while (size >= 1024 && order < sizes.Length - 1)
+            {
+                order++;
+                size = size / 1024;
+            }
+
+            return String.Format("{0:0.##} {1}", size, sizes[order]);
+        }
+    }
+}

Notesnook.API/Hubs/SyncHub.cs

@@ -1,473 +0,0 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Runtime.CompilerServices;
-using System.Security.Claims;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-using System.Threading;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.SignalR;
-using MongoDB.Driver;
-using Notesnook.API.Authorization;
-using Notesnook.API.Interfaces;
-using Notesnook.API.Models;
-using Notesnook.API.Repositories;
-using Streetwriters.Common.Models;
-using Streetwriters.Data.Interfaces;
-
-namespace Notesnook.API.Hubs
-{
-    public struct RunningPush
-    {
-        public long Timestamp { get; set; }
-        public long Validity { get; set; }
-        public string ConnectionId { get; set; }
-    }
-    public interface ISyncHubClient
-    {
-        Task PushItems(SyncTransferItemV2 transferItem);
-        Task<bool> SendItems(SyncTransferItemV2 transferItem);
-        Task PushCompleted(long lastSynced);
-    }
-
-    public class GlobalSync
-    {
-        private const long PUSH_VALIDITY_EXTENSION_PERIOD = 16 * 1000; // 16 second
-        private const int PUSH_VALIDITY_PERIOD_PER_ITEM = 5 * 100; // 0.5 second
-        private const long BASE_PUSH_VALIDITY_PERIOD = 5 * 1000; // 5 seconds
-        private const long BASE_PUSH_VALIDITY_PERIOD_NEW = 16 * 1000; // 16 seconds
-        private readonly static Dictionary<string, List<RunningPush>> PushOperations = new();
-
-        public static void ClearPushOperations(string userId, string connectionId)
-        {
-            if (PushOperations.TryGetValue(userId, out List<RunningPush> operations))
-            {
-                var now = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
-                foreach (var push in operations.ToArray())
-                    if (push.ConnectionId == connectionId || !IsPushValid(push, now))
-                        operations.Remove(push);
-            }
-        }
-
-        public static bool IsPushing(string userId, string connectionId)
-        {
-            if (PushOperations.TryGetValue(userId, out List<RunningPush> operations))
-            {
-                var now = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
-                foreach (var push in operations)
-                    if (push.ConnectionId == connectionId && IsPushValid(push, now)) return true;
-            }
-            return false;
-        }
-
-
-        public static bool IsUserPushing(string userId)
-        {
-            var count = 0;
-            if (PushOperations.TryGetValue(userId, out List<RunningPush> operations))
-            {
-                var now = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
-                foreach (var push in operations)
-                    if (IsPushValid(push, now)) ++count;
-            }
-            return count > 0;
-        }
-
-        public static void StartPush(string userId, string connectionId, long? totalItems = null)
-        {
-            if (IsPushing(userId, connectionId)) return;
-
-            if (!PushOperations.ContainsKey(userId))
-                PushOperations[userId] = new List<RunningPush>();
-
-            PushOperations[userId].Add(new RunningPush
-            {
-                ConnectionId = connectionId,
-                Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
-                Validity = totalItems.HasValue ? BASE_PUSH_VALIDITY_PERIOD + (totalItems.Value * PUSH_VALIDITY_PERIOD_PER_ITEM) : BASE_PUSH_VALIDITY_PERIOD_NEW
-            });
-        }
-        public static void ExtendPush(string userId, string connectionId)
-        {
-            if (!IsPushing(userId, connectionId) || !PushOperations.ContainsKey(userId))
-            {
-                StartPush(userId, connectionId);
-                return;
-            }
-
-            var index = PushOperations[userId].FindIndex((push) => push.ConnectionId == connectionId);
-            if (index < 0)
-            {
-                StartPush(userId, connectionId);
-                return;
-            }
-
-            var pushOperation = PushOperations[userId][index];
-            pushOperation.Validity += PUSH_VALIDITY_EXTENSION_PERIOD;
-        }
-        private static bool IsPushValid(RunningPush push, long now)
-        {
-            return now < push.Timestamp + push.Validity;
-        }
-    }
-
-    [Authorize("Sync")]
-    public class SyncHub : Hub<ISyncHubClient>
-    {
-        private ISyncItemsRepositoryAccessor Repositories { get; }
-        private readonly IUnitOfWork unit;
-        private readonly string[] CollectionKeys = new[] {
-            "settings",
-            "attachment",
-            "note",
-            "notebook",
-            "content",
-            "shortcut",
-            "reminder",
-            "relation", // relations must sync at the end to prevent invalid state
-        };
-
-        public SyncHub(ISyncItemsRepositoryAccessor syncItemsRepositoryAccessor, IUnitOfWork unitOfWork)
-        {
-            Repositories = syncItemsRepositoryAccessor;
-            unit = unitOfWork;
-        }
-
-        public override async Task OnConnectedAsync()
-        {
-            var result = new SyncRequirement().IsAuthorized(Context.User, new PathString("/hubs/sync"));
-            if (!result.Succeeded)
-            {
-                var reason = result.AuthorizationFailure.FailureReasons.FirstOrDefault();
-                throw new HubException(reason?.Message ?? "Unauthorized");
-            }
-            var id = Context.User.FindFirstValue("sub");
-            await Groups.AddToGroupAsync(Context.ConnectionId, id);
-            await base.OnConnectedAsync();
-        }
-
-        public override async Task OnDisconnectedAsync(Exception exception)
-        {
-            try
-            {
-                await base.OnDisconnectedAsync(exception);
-            }
-            finally
-            {
-                var id = Context.User.FindFirstValue("sub");
-                GlobalSync.ClearPushOperations(id, Context.ConnectionId);
-            }
-        }
-
-        private Action<SyncItem, string, long> MapTypeToUpsertAction(string type)
-        {
-            return type switch
-            {
-                "attachment" => Repositories.Attachments.Upsert,
-                "note" => Repositories.Notes.Upsert,
-                "notebook" => Repositories.Notebooks.Upsert,
-                "content" => Repositories.Contents.Upsert,
-                "shortcut" => Repositories.Shortcuts.Upsert,
-                "reminder" => Repositories.Reminders.Upsert,
-                "relation" => Repositories.Relations.Upsert,
-                _ => null,
-            };
-        }
-
-        public async Task<long> InitializePush(SyncMetadata syncMetadata)
-        {
-            if (syncMetadata.LastSynced <= 0) throw new HubException("Last synced time cannot be zero or less than zero.");
-
-            var userId = Context.User.FindFirstValue("sub");
-            if (string.IsNullOrEmpty(userId)) return 0;
-
-            UserSettings userSettings = await Repositories.UsersSettings.FindOneAsync((u) => u.UserId == userId);
-            long dateSynced = Math.Max(syncMetadata.LastSynced, userSettings.LastSynced);
-
-            GlobalSync.StartPush(userId, Context.ConnectionId);
-
-
-            if (
-                (userSettings.VaultKey != null &&
-                syncMetadata.VaultKey != null &&
-                !userSettings.VaultKey.Equals(syncMetadata.VaultKey) &&
-                !syncMetadata.VaultKey.IsEmpty()) ||
-                (userSettings.VaultKey == null &&
-                syncMetadata.VaultKey != null &&
-                !syncMetadata.VaultKey.IsEmpty()))
-            {
-                userSettings.VaultKey = syncMetadata.VaultKey;
-                await Repositories.UsersSettings.UpsertAsync(userSettings, (u) => u.UserId == userId);
-            }
-
-            return dateSynced;
-        }
-
-        public async Task<int> PushItems(SyncTransferItemV2 pushItem, long dateSynced)
-        {
-            var userId = Context.User.FindFirstValue("sub");
-            if (string.IsNullOrEmpty(userId)) return 0;
-
-            SyncEventCounterSource.Log.Push();
-
-            try
-            {
-                var others = Clients.OthersInGroup(userId);
-                others.PushItems(pushItem);
-
-                GlobalSync.ExtendPush(userId, Context.ConnectionId);
-
-                if (pushItem.Type == "settings")
-                {
-                    var settings = pushItem.Items.First();
-                    if (settings == null) return 0;
-                    settings.Id = MongoDB.Bson.ObjectId.Parse(userId);
-                    settings.ItemId = userId;
-                    Repositories.LegacySettings.Upsert(settings, userId, dateSynced);
-                }
-                else
-                {
-                    var UpsertItem = MapTypeToUpsertAction(pushItem.Type) ?? throw new Exception("Invalid item type.");
-                    foreach (var item in pushItem.Items)
-                    {
-                        UpsertItem(item, userId, dateSynced);
-                    }
-                }
-
-                return await unit.Commit() ? 1 : 0;
-            }
-            catch (Exception ex)
-            {
-                GlobalSync.ClearPushOperations(userId, Context.ConnectionId);
-                throw ex;
-            }
-        }
-
-        public async Task<bool> SyncCompleted(long dateSynced)
-        {
-            var userId = Context.User.FindFirstValue("sub");
-            try
-            {
-                UserSettings userSettings = await this.Repositories.UsersSettings.FindOneAsync((u) => u.UserId == userId);
-
-                long lastSynced = Math.Max(dateSynced, userSettings.LastSynced);
-
-                userSettings.LastSynced = lastSynced;
-
-                await this.Repositories.UsersSettings.UpsertAsync(userSettings, (u) => u.UserId == userId);
-
-                await Clients.OthersInGroup(userId).PushCompleted(lastSynced);
-
-                return true;
-            }
-            finally
-            {
-                GlobalSync.ClearPushOperations(userId, Context.ConnectionId);
-            }
-        }
-
-        private static async IAsyncEnumerable<SyncTransferItemV2> PrepareChunks(Func<string, long, int, Task<IAsyncCursor<SyncItem>>>[] collections, string[] types, string userId, long lastSyncedTimestamp, int size, long maxBytes, int skipChunks)
-        {
-            var chunksProcessed = 0;
-            for (int i = 0; i < collections.Length; i++)
-            {
-                var type = types[i];
-
-                using var cursor = await collections[i](userId, lastSyncedTimestamp, size);
-
-                var chunk = new List<SyncItem>();
-                long totalBytes = 0;
-                long METADATA_BYTES = 5 * 1024;
-
-                while (await cursor.MoveNextAsync())
-                {
-                    if (chunksProcessed++ < skipChunks) continue;
-                    foreach (var item in cursor.Current)
-                    {
-                        chunk.Add(item);
-                        totalBytes += item.Length + METADATA_BYTES;
-                        if (totalBytes >= maxBytes)
-                        {
-                            yield return new SyncTransferItemV2
-                            {
-                                Items = chunk,
-                                Type = type,
-                                Count = chunksProcessed
-                            };
-
-                            totalBytes = 0;
-                            chunk.Clear();
-                        }
-                    }
-                }
-                if (chunk.Count > 0)
-                {
-                    if (chunksProcessed++ < skipChunks) continue;
-                    yield return new SyncTransferItemV2
-                    {
-                        Items = chunk,
-                        Type = type,
-                        Count = chunksProcessed
-                    };
-                }
-            }
-        }
-
-        public Task<SyncMetadata> RequestFetch(long lastSyncedTimestamp)
-        {
-            return RequestResumableFetch(lastSyncedTimestamp);
-        }
-
-        public async Task<SyncMetadata> RequestResumableFetch(long lastSyncedTimestamp, int cursor = 0)
-        {
-            var userId = Context.User.FindFirstValue("sub");
-
-            if (GlobalSync.IsUserPushing(userId))
-            {
-                throw new HubException("Cannot fetch data while another sync is in progress. Please try again later.");
-            }
-
-            SyncEventCounterSource.Log.Fetch();
-
-            var userSettings = await Repositories.UsersSettings.FindOneAsync((u) => u.UserId == userId);
-            if (userSettings.LastSynced > 0 && lastSyncedTimestamp > userSettings.LastSynced)
-            {
-                throw new HubException($"Provided timestamp value is too large. Server timestamp: {userSettings.LastSynced} Sent timestamp: {lastSyncedTimestamp}. Please run a Force Sync to fix this issue.");
-            }
-            // var client = Clients.Caller;
-
-            if (lastSyncedTimestamp > 0 && userSettings.LastSynced == lastSyncedTimestamp)
-            {
-                return new SyncMetadata
-                {
-                    LastSynced = userSettings.LastSynced,
-                };
-            }
-
-            var isResumable = lastSyncedTimestamp == 0;
-            if (!isResumable) cursor = 0;
-
-            var chunks = PrepareChunks(
-                collections: new[] {
-                    Repositories.LegacySettings.FindItemsSyncedAfter,
-                    Repositories.Attachments.FindItemsSyncedAfter,
-                    Repositories.Notes.FindItemsSyncedAfter,
-                    Repositories.Notebooks.FindItemsSyncedAfter,
-                    Repositories.Contents.FindItemsSyncedAfter,
-                    Repositories.Shortcuts.FindItemsSyncedAfter,
-                    Repositories.Reminders.FindItemsSyncedAfter,
-                    Repositories.Relations.FindItemsSyncedAfter,
-                },
-                types: CollectionKeys,
-                userId,
-                lastSyncedTimestamp,
-                size: 1000,
-                maxBytes: 7 * 1024 * 1024,
-                skipChunks: cursor
-            );
-
-            await foreach (var chunk in chunks)
-            {
-                _ = await Clients.Caller.SendItems(chunk).WaitAsync(TimeSpan.FromMinutes(10));
-            }
-
-            return new SyncMetadata
-            {
-                VaultKey = userSettings.VaultKey,
-                LastSynced = userSettings.LastSynced,
-            };
-        }
-    }
-
-    [MessagePack.MessagePackObject]
-    public struct BatchedSyncTransferItem
-    {
-        [MessagePack.Key("lastSynced")]
-        public long LastSynced { get; set; }
-
-        [MessagePack.Key("items")]
-        public string[] Items { get; set; }
-
-        [MessagePack.Key("types")]
-        public string[] Types { get; set; }
-
-        [MessagePack.Key("total")]
-        public int Total { get; set; }
-
-        [MessagePack.Key("current")]
-        public int Current { get; set; }
-    }
-
-    [MessagePack.MessagePackObject]
-    public struct SyncTransferItem
-    {
-        [MessagePack.Key("synced")]
-        public bool Synced { get; set; }
-
-        [MessagePack.Key("lastSynced")]
-        public long LastSynced { get; set; }
-
-        [MessagePack.Key("item")]
-        public string Item { get; set; }
-
-        [MessagePack.Key("itemType")]
-        public string ItemType { get; set; }
-
-        [MessagePack.Key("total")]
-        public int Total { get; set; }
-
-        [MessagePack.Key("current")]
-        public int Current { get; set; }
-    }
-
-    [MessagePack.MessagePackObject]
-    public struct SyncTransferItemV2
-    {
-        [MessagePack.Key("items")]
-        [JsonPropertyName("items")]
-        public IEnumerable<SyncItem> Items { get; set; }
-
-        [MessagePack.Key("type")]
-        [JsonPropertyName("type")]
-        public string Type { get; set; }
-        [MessagePack.Key("count")]
-        [JsonPropertyName("count")]
-        public int Count { get; set; }
-    }
-
-    [MessagePack.MessagePackObject]
-    public struct SyncMetadata
-    {
-        [MessagePack.Key("vaultKey")]
-        [JsonPropertyName("vaultKey")]
-        public EncryptedData VaultKey { get; set; }
-
-        [MessagePack.Key("lastSynced")]
-        [JsonPropertyName("lastSynced")]
-        public long LastSynced { get; set; }
-        // [MessagePack.Key("total")]
-        // public long TotalItems { get; set; }
-    }
-}

Notesnook.API/Hubs/SyncV2Hub.cs

@@ -18,18 +18,18 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 using System;
+using System.Collections.Frozen;
 using System.Collections.Generic;
 using System.Diagnostics;
-using System.Diagnostics.Metrics;
 using System.Linq;
+using System.Linq.Expressions;
 using System.Security.Claims;
 using System.Text.Json.Serialization;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.SignalR;
-using MongoDB.Bson;
-using MongoDB.Bson.Serialization;
+using Microsoft.Extensions.Logging;
 using MongoDB.Driver;
 using Notesnook.API.Authorization;
 using Notesnook.API.Interfaces;
@@ -43,15 +43,19 @@ namespace Notesnook.API.Hubs
     {
         Task<bool> SendItems(SyncTransferItemV2 transferItem);
         Task<bool> SendVaultKey(EncryptedData vaultKey);
+        Task<bool> SendMonographs(IEnumerable<MonographMetadata> monographs);
+        Task<bool> SendInboxItems(IEnumerable<InboxSyncItem> inboxItems);
         Task PushCompleted();
+        Task PushCompletedV2(string deviceId);
     }
 
-    [Authorize("Sync")]
+    [Authorize]
     public class SyncV2Hub : Hub<ISyncV2HubClient>
     {
         private ISyncItemsRepositoryAccessor Repositories { get; }
+        private SyncDeviceService SyncDeviceService { get; }
         private readonly IUnitOfWork unit;
-        private readonly string[] CollectionKeys = [
+        private static readonly string[] CollectionKeys = [
             "settingitem",
             "attachment",
             "note",
@@ -64,11 +68,43 @@ namespace Notesnook.API.Hubs
             "vault",
             "relation", // relations must sync at the end to prevent invalid state
         ];
+        private readonly FrozenDictionary<string, Action<IEnumerable<SyncItem>, string, long>> UpsertActionsMap;
+        private readonly Func<string, IEnumerable<string>, bool, int, Task<IAsyncCursor<SyncItem>>>[] Collections;
+        ILogger<SyncV2Hub> Logger { get; }
 
-        public SyncV2Hub(ISyncItemsRepositoryAccessor syncItemsRepositoryAccessor, IUnitOfWork unitOfWork)
+        public SyncV2Hub(ISyncItemsRepositoryAccessor syncItemsRepositoryAccessor, IUnitOfWork unitOfWork, SyncDeviceService syncDeviceService, ILogger<SyncV2Hub> logger)
         {
+            Logger = logger;
             Repositories = syncItemsRepositoryAccessor;
             unit = unitOfWork;
+            SyncDeviceService = syncDeviceService;
+
+            Collections = [
+                Repositories.Settings.FindItemsById,
+                Repositories.Attachments.FindItemsById,
+                Repositories.Notes.FindItemsById,
+                Repositories.Notebooks.FindItemsById,
+                Repositories.Contents.FindItemsById,
+                Repositories.Shortcuts.FindItemsById,
+                Repositories.Reminders.FindItemsById,
+                Repositories.Colors.FindItemsById,
+                Repositories.Tags.FindItemsById,
+                Repositories.Vaults.FindItemsById,
+                Repositories.Relations.FindItemsById,
+            ];
+            UpsertActionsMap = new Dictionary<string, Action<IEnumerable<SyncItem>, string, long>> {
+                { "settingitem", Repositories.Settings.UpsertMany },
+                { "attachment", Repositories.Attachments.UpsertMany },
+                { "note", Repositories.Notes.UpsertMany },
+                { "notebook", Repositories.Notebooks.UpsertMany },
+                { "content", Repositories.Contents.UpsertMany },
+                { "shortcut", Repositories.Shortcuts.UpsertMany },
+                { "reminder", Repositories.Reminders.UpsertMany },
+                { "relation", Repositories.Relations.UpsertMany },
+                { "color", Repositories.Colors.UpsertMany },
+                { "vault", Repositories.Vaults.UpsertMany },
+                { "tag", Repositories.Tags.UpsertMany },
+            }.ToFrozenDictionary();
         }
 
         public override async Task OnConnectedAsync()
@@ -76,97 +112,65 @@ namespace Notesnook.API.Hubs
             var result = new SyncRequirement().IsAuthorized(Context.User, new PathString("/hubs/sync/v2"));
             if (!result.Succeeded)
             {
-                var reason = result.AuthorizationFailure.FailureReasons.FirstOrDefault();
+                var reason = result.AuthorizationFailure?.FailureReasons.FirstOrDefault();
                 throw new HubException(reason?.Message ?? "Unauthorized");
             }
-            var id = Context.User.FindFirstValue("sub");
+            var id = Context.User?.FindFirstValue("sub") ?? throw new HubException("User not found.");
             await Groups.AddToGroupAsync(Context.ConnectionId, id);
             await base.OnConnectedAsync();
         }
 
-        private Action<IEnumerable<SyncItem>, string, long> MapTypeToUpsertAction(string type)
-        {
-            return type switch
-            {
-                "settingitem" => Repositories.Settings.UpsertMany,
-                "attachment" => Repositories.Attachments.UpsertMany,
-                "note" => Repositories.Notes.UpsertMany,
-                "notebook" => Repositories.Notebooks.UpsertMany,
-                "content" => Repositories.Contents.UpsertMany,
-                "shortcut" => Repositories.Shortcuts.UpsertMany,
-                "reminder" => Repositories.Reminders.UpsertMany,
-                "relation" => Repositories.Relations.UpsertMany,
-                "color" => Repositories.Colors.UpsertMany,
-                "vault" => Repositories.Vaults.UpsertMany,
-                "tag" => Repositories.Tags.UpsertMany,
-                _ => null,
-            };
-        }
-
-        private Func<string, IEnumerable<string>, bool, int, Task<IAsyncCursor<SyncItem>>> MapTypeToFindItemsAction(string type)
-        {
-            return type switch
-            {
-                "settingitem" => Repositories.Settings.FindItemsById,
-                "attachment" => Repositories.Attachments.FindItemsById,
-                "note" => Repositories.Notes.FindItemsById,
-                "notebook" => Repositories.Notebooks.FindItemsById,
-                "content" => Repositories.Contents.FindItemsById,
-                "shortcut" => Repositories.Shortcuts.FindItemsById,
-                "reminder" => Repositories.Reminders.FindItemsById,
-                "relation" => Repositories.Relations.FindItemsById,
-                "color" => Repositories.Colors.FindItemsById,
-                "vault" => Repositories.Vaults.FindItemsById,
-                "tag" => Repositories.Tags.FindItemsById,
-                _ => null,
-            };
-        }
 
         public async Task<int> PushItems(string deviceId, SyncTransferItemV2 pushItem)
         {
-            var userId = Context.User.FindFirstValue("sub");
-            if (string.IsNullOrEmpty(userId)) throw new HubException("Please login to sync.");
+            var userId = Context.User?.FindFirstValue("sub") ?? throw new HubException("Please login to sync.");
 
             SyncEventCounterSource.Log.PushV2();
 
-            var stopwatch = new Stopwatch();
-            stopwatch.Start();
+            var stopwatch = Stopwatch.StartNew();
             try
             {
 
-                var UpsertItems = MapTypeToUpsertAction(pushItem.Type) ?? throw new Exception($"Invalid item type: {pushItem.Type}.");
+                var UpsertItems = UpsertActionsMap[pushItem.Type] ?? throw new Exception($"Invalid item type: {pushItem.Type}.");
                 UpsertItems(pushItem.Items, userId, 1);
 
                 if (!await unit.Commit()) return 0;
 
-                await new SyncDeviceService(new SyncDevice(ref userId, ref deviceId)).AddIdsToOtherDevicesAsync(pushItem.Items.Select((i) => $"{i.ItemId}:{pushItem.Type}").ToList());
+                await SyncDeviceService.AddIdsToOtherDevicesAsync(userId, deviceId, pushItem.Items.Select((i) => new ItemKey(i.ItemId, pushItem.Type)));
                 return 1;
             }
             finally
             {
-                stopwatch.Stop();
                 SyncEventCounterSource.Log.RecordPushDuration(stopwatch.ElapsedMilliseconds);
             }
         }
 
         public async Task<bool> PushCompleted()
         {
-            var userId = Context.User.FindFirstValue("sub");
+            var userId = Context.User?.FindFirstValue("sub") ?? throw new HubException("User not found.");
             await Clients.OthersInGroup(userId).PushCompleted();
             return true;
         }
 
-        private static async IAsyncEnumerable<SyncTransferItemV2> PrepareChunks(Func<string, string[], bool, int, Task<IAsyncCursor<SyncItem>>>[] collections, string[] types, string userId, string[] ids, int size, bool resetSync, long maxBytes)
+        public async Task<bool> PushCompletedV2(string deviceId)
         {
-            var chunksProcessed = 0;
-            for (int i = 0; i < collections.Length; i++)
-            {
-                var type = types[i];
+            var userId = Context.User?.FindFirstValue("sub") ?? throw new HubException("User not found.");
+            await Clients.OthersInGroup(userId).PushCompleted();
+            await Clients.OthersInGroup(userId).PushCompletedV2(deviceId);
+            return true;
+        }
 
-                var filteredIds = ids.Where((id) => id.EndsWith($":{type}")).Select((id) => id.Split(":")[0]).ToArray();
+        private async IAsyncEnumerable<SyncTransferItemV2> PrepareChunks(string userId, HashSet<ItemKey> ids, int size, bool resetSync, long maxBytes)
+        {
+            var itemsProcessed = 0;
+            for (int i = 0; i < Collections.Length; i++)
+            {
+                var type = CollectionKeys[i];
+
+                var filteredIds = ids.Where((id) => id.Type == type).Select((id) => id.ItemId).ToArray();
                 if (!resetSync && filteredIds.Length == 0) continue;
 
-                using var cursor = await collections[i](userId, filteredIds, resetSync, size);
+                using var cursor = await Collections[i](userId, filteredIds, resetSync, size);
 
                 var chunk = new List<SyncItem>();
                 long totalBytes = 0;
@@ -180,11 +184,12 @@ namespace Notesnook.API.Hubs
                         totalBytes += item.Length + METADATA_BYTES;
                         if (totalBytes >= maxBytes)
                         {
+                            itemsProcessed += chunk.Count;
                             yield return new SyncTransferItemV2
                             {
                                 Items = chunk,
                                 Type = type,
-                                Count = chunksProcessed
+                                Count = itemsProcessed
                             };
 
                             totalBytes = 0;
@@ -194,11 +199,12 @@ namespace Notesnook.API.Hubs
                 }
                 if (chunk.Count > 0)
                 {
+                    itemsProcessed += chunk.Count;
                     yield return new SyncTransferItemV2
                     {
                         Items = chunk,
                         Type = type,
-                        Count = chunksProcessed
+                        Count = itemsProcessed
                     };
                 }
             }
@@ -206,67 +212,96 @@ namespace Notesnook.API.Hubs
 
         public async Task<SyncV2Metadata> RequestFetch(string deviceId)
         {
-            var userId = Context.User.FindFirstValue("sub");
-            if (string.IsNullOrEmpty(userId)) throw new HubException("Please login to sync.");
+            return await HandleRequestFetch(deviceId, false, false);
+        }
+
+        public async Task<SyncV2Metadata> RequestFetchV2(string deviceId)
+        {
+            return await HandleRequestFetch(deviceId, true, false);
+        }
+
+        public async Task<SyncV2Metadata> RequestFetchV3(string deviceId)
+        {
+            return await HandleRequestFetch(deviceId, true, true);
+        }
+
+        private async Task<SyncV2Metadata> HandleRequestFetch(string deviceId, bool includeMonographs, bool includeInboxItems)
+        {
+            var userId = Context.User?.FindFirstValue("sub") ?? throw new HubException("Please login to sync.");
 
             SyncEventCounterSource.Log.FetchV2();
 
-            var deviceService = new SyncDeviceService(new SyncDevice(ref userId, ref deviceId));
-            if (!deviceService.IsDeviceRegistered()) deviceService.RegisterDevice();
+            var device = await SyncDeviceService.GetDeviceAsync(userId, deviceId);
+            if (device == null)
+                device = await SyncDeviceService.RegisterDeviceAsync(userId, deviceId);
+            else
+                await SyncDeviceService.UpdateLastAccessTimeAsync(userId, deviceId);
 
-            var isResetSync = deviceService.IsSyncReset();
-            if (!deviceService.IsUnsynced() &&
-                !deviceService.IsSyncPending() &&
-                !isResetSync)
-                return new SyncV2Metadata { Synced = true };
-
-            var stopwatch = new Stopwatch();
-            stopwatch.Start();
+            var stopwatch = Stopwatch.StartNew();
             try
             {
-                string[] ids = await deviceService.FetchUnsyncedIdsAsync();
+                var ids = await SyncDeviceService.FetchUnsyncedIdsAsync(userId, deviceId);
+                if (!device.IsSyncReset && ids.Count == 0)
+                    return new SyncV2Metadata { Synced = true };
 
                 var chunks = PrepareChunks(
-                    collections: [
-                        Repositories.Settings.FindItemsById,
-                    Repositories.Attachments.FindItemsById,
-                    Repositories.Notes.FindItemsById,
-                    Repositories.Notebooks.FindItemsById,
-                    Repositories.Contents.FindItemsById,
-                    Repositories.Shortcuts.FindItemsById,
-                    Repositories.Reminders.FindItemsById,
-                    Repositories.Colors.FindItemsById,
-                    Repositories.Tags.FindItemsById,
-                    Repositories.Vaults.FindItemsById,
-                    Repositories.Relations.FindItemsById,
-                    ],
-                    types: CollectionKeys,
                     userId,
                     ids,
                     size: 1000,
-                    resetSync: isResetSync,
+                    resetSync: device.IsSyncReset,
                     maxBytes: 7 * 1024 * 1024
                 );
 
-                var userSettings = await Repositories.UsersSettings.FindOneAsync((u) => u.UserId.Equals(userId));
-                if (userSettings.VaultKey != null)
-                {
-                    if (!await Clients.Caller.SendVaultKey(userSettings.VaultKey).WaitAsync(TimeSpan.FromMinutes(10))) throw new HubException("Client rejected vault key.");
-                }
-
                 await foreach (var chunk in chunks)
                 {
                     if (!await Clients.Caller.SendItems(chunk).WaitAsync(TimeSpan.FromMinutes(10))) throw new HubException("Client rejected sent items.");
 
-                    if (!isResetSync)
+                    if (!device.IsSyncReset)
                     {
-                        var syncedIds = chunk.Items.Select((i) => $"{i.ItemId}:{chunk.Type}").ToHashSet();
-                        ids = ids.Where((id) => !syncedIds.Contains(id)).ToArray();
-                        await deviceService.WritePendingIdsAsync(ids);
+                        ids.ExceptWith(chunk.Items.Select(i => new ItemKey(i.ItemId, chunk.Type)));
+                        await SyncDeviceService.WritePendingIdsAsync(userId, deviceId, ids);
                     }
                 }
 
-                deviceService.Reset();
+                if (includeMonographs)
+                {
+                    var unsyncedMonographIds = ids.Where(k => k.Type == "monograph").Select(k => k.ItemId);
+                    FilterDefinition<Monograph> filter = device.IsSyncReset
+                        ? Builders<Monograph>.Filter.Eq(m => m.UserId, userId)
+                        : Builders<Monograph>.Filter.And(
+                            Builders<Monograph>.Filter.Eq(m => m.UserId, userId),
+                            Builders<Monograph>.Filter.Or(
+                                Builders<Monograph>.Filter.In(m => m.ItemId, unsyncedMonographIds),
+                                Builders<Monograph>.Filter.In("_id", unsyncedMonographIds)
+                            )
+                        );
+                    var userMonographs = await Repositories.Monographs.Collection.Find(filter).Project((m) => new MonographMetadata
+                    {
+                        DatePublished = m.DatePublished,
+                        Deleted = m.Deleted,
+                        Password = m.Password,
+                        SelfDestruct = m.SelfDestruct,
+                        Title = m.Title,
+                        ItemId = m.ItemId ?? m.Id.ToString()
+                    }).ToListAsync();
+
+                    if (userMonographs.Count > 0 && !await Clients.Caller.SendMonographs(userMonographs).WaitAsync(TimeSpan.FromMinutes(10)))
+                        throw new HubException("Client rejected monographs.");
+                }
+
+                if (includeInboxItems)
+                {
+                    var unsyncedInboxItemIds = ids.Where(k => k.Type == "inbox_item").Select(k => k.ItemId);
+                    var userInboxItems = device.IsSyncReset
+                        ? await Repositories.InboxItems.FindAsync(m => m.UserId == userId)
+                        : await Repositories.InboxItems.FindAsync(m => m.UserId == userId && unsyncedInboxItemIds.Contains(m.ItemId ?? m.Id.ToString()));
+                    if (userInboxItems.Any() && !await Clients.Caller.SendInboxItems(userInboxItems).WaitAsync(TimeSpan.FromMinutes(10)))
+                    {
+                        throw new HubException("Client rejected inbox items.");
+                    }
+                }
+
+                await SyncDeviceService.ResetAsync(userId, deviceId);
 
                 return new SyncV2Metadata
                 {
@@ -275,7 +310,6 @@ namespace Notesnook.API.Hubs
             }
             finally
             {
-                stopwatch.Stop();
                 SyncEventCounterSource.Log.RecordFetchDuration(stopwatch.ElapsedMilliseconds);
             }
         }
@@ -290,7 +324,7 @@ namespace Notesnook.API.Hubs
     }
 
     [MessagePack.MessagePackObject]
-    public struct SyncV2TransferItem
+    public struct SyncTransferItemV2
     {
         [MessagePack.Key("items")]
         [JsonPropertyName("items")]
@@ -299,13 +333,8 @@ namespace Notesnook.API.Hubs
         [MessagePack.Key("type")]
         [JsonPropertyName("type")]
         public string Type { get; set; }
-
-        [MessagePack.Key("final")]
-        [JsonPropertyName("final")]
-        public bool Final { get; set; }
-
-        [MessagePack.Key("vaultKey")]
-        [JsonPropertyName("vaultKey")]
-        public EncryptedData VaultKey { get; set; }
+        [MessagePack.Key("count")]
+        [JsonPropertyName("count")]
+        public int Count { get; set; }
     }
 }

Notesnook.API/Interfaces/IMonograph.cs

@@ -1,33 +0,0 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using Notesnook.API.Models;
-using Streetwriters.Common.Interfaces;
-
-namespace Notesnook.API.Interfaces
-{
-    public interface IMonograph : IDocument
-    {
-        string Title { get; set; }
-        string UserId { get; set; }
-        byte[] CompressedContent { get; set; }
-        EncryptedData EncryptedContent { get; set; }
-        long DatePublished { get; set; }
-    }
-}

Notesnook.API/Interfaces/IS3Service.cs

@@ -31,9 +31,10 @@ namespace Notesnook.API.Interfaces
         Task DeleteObjectAsync(string userId, string name);
         Task DeleteDirectoryAsync(string userId);
         Task<long> GetObjectSizeAsync(string userId, string name);
-        string GetUploadObjectUrl(string userId, string name);
-        string GetDownloadObjectUrl(string userId, string name);
-        Task<MultipartUploadMeta> StartMultipartUploadAsync(string userId, string name, int parts, string uploadId = null);
+        Task<string?> GetUploadObjectUrlAsync(string userId, string name);
+        Task<string?> GetInternalUploadObjectUrlAsync(string userId, string name);
+        Task<string?> GetDownloadObjectUrlAsync(string userId, string name);
+        Task<MultipartUploadMeta> StartMultipartUploadAsync(string userId, string name, int parts, string? uploadId = null);
         Task AbortMultipartUploadAsync(string userId, string name, string uploadId);
         Task CompleteMultipartUploadAsync(string userId, CompleteMultipartUploadRequest uploadRequest);
     }

Notesnook.API/Interfaces/ISyncItemsRepositoryAccessor.cs

@@ -40,5 +40,9 @@ namespace Notesnook.API.Interfaces
         SyncItemsRepository Tags { get; }
         Repository<UserSettings> UsersSettings { get; }
         Repository<Monograph> Monographs { get; }
+        Repository<InboxApiKey> InboxApiKey { get; }
+        Repository<InboxSyncItem> InboxItems { get; }
+        Repository<SyncDevice> SyncDevices { get; }
+        Repository<DeviceIdsChunk> DeviceIdsChunks { get; }
     }
 }

Notesnook.API/Interfaces/IUserService.cs

@@ -1,36 +1,35 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System.Threading;
-using System.Threading.Tasks;
-using Notesnook.API.Models.Responses;
-using Streetwriters.Common.Interfaces;
-
-namespace Notesnook.API.Interfaces
-{
-    public interface IUserService
-    {
-        Task CreateUserAsync();
-        Task DeleteUserAsync(string userId);
-        Task DeleteUserAsync(string userId, string jti, string password);
-        Task<bool> ResetUserAsync(string userId, bool removeAttachments);
-        Task<UserResponse> GetUserAsync(string userId);
-        Task SetUserAttachmentsKeyAsync(string userId, IEncrypted key);
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.Threading.Tasks;
+using Notesnook.API.Models;
+using Notesnook.API.Models.Responses;
+
+namespace Notesnook.API.Interfaces
+{
+    public interface IUserService
+    {
+        Task CreateUserAsync();
+        Task DeleteUserAsync(string userId);
+        Task DeleteUserAsync(string userId, string? jti, string password);
+        Task<bool> ResetUserAsync(string userId, bool removeAttachments);
+        Task<UserResponse> GetUserAsync(string userId);
+        Task SetUserKeysAsync(string userId, UserKeys keys);
+    }
 }

Notesnook.API/Jobs/DeviceCleanupJob.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using MongoDB.Driver;
+using Notesnook.API.Interfaces;
+using Notesnook.API.Models;
+using Notesnook.API.Services;
+using Quartz;
+
+namespace Notesnook.API.Jobs
+{
+    public class DeviceCleanupJob(ISyncItemsRepositoryAccessor repositories) : IJob
+    {
+        public async Task Execute(IJobExecutionContext context)
+        {
+            var cutoffDate = DateTimeOffset.UtcNow.AddMonths(-1).ToUnixTimeMilliseconds();
+            var deviceFilter = Builders<SyncDevice>.Filter.Lt(x => x.LastAccessTime, cutoffDate);
+
+            using var cursor = await repositories.SyncDevices.Collection.Find(deviceFilter, new FindOptions { BatchSize = 1000 })
+                .Project(x => x.DeviceId)
+                .ToCursorAsync();
+
+            var deleteModels = new List<WriteModel<DeviceIdsChunk>>();
+            while (await cursor.MoveNextAsync())
+            {
+                if (!cursor.Current.Any()) continue;
+                deleteModels.Add(new DeleteManyModel<DeviceIdsChunk>(Builders<DeviceIdsChunk>.Filter.In(x => x.DeviceId, cursor.Current)));
+            }
+
+            if (deleteModels.Count > 0)
+            {
+                var bulkOptions = new BulkWriteOptions { IsOrdered = false };
+                await repositories.DeviceIdsChunks.Collection.BulkWriteAsync(deleteModels, bulkOptions);
+            }
+
+            await repositories.SyncDevices.Collection.DeleteManyAsync(deviceFilter);
+        }
+    }
+}

Notesnook.API/Models/Algorithms.cs

@@ -1,26 +1,27 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-namespace Notesnook.API.Models
-{
-    public class Algorithms
-    {
-        public static string Default => "xcha-argon2i13-7";
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace Notesnook.API.Models
+{
+    public class Algorithms
+    {
+        public static string Default => "xcha-argon2i13-7";
+        public static string XSAL_X25519_7 => "xsal-x25519-7";
+    }
 }

Notesnook.API/Models/Announcement.cs

@@ -1,159 +1,159 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-using System.Runtime.Serialization;
-using System.Text.Json.Serialization;
-using MongoDB.Bson;
-using MongoDB.Bson.Serialization.Attributes;
-
-namespace Notesnook.API.Models
-{
-    public class Announcement
-    {
-        public Announcement()
-        {
-            this.Id = ObjectId.GenerateNewId().ToString();
-        }
-
-        [BsonId]
-        [BsonRepresentation(BsonType.ObjectId)]
-        [BsonElement("id")]
-        [JsonPropertyName("id")]
-        public string Id { get; set; }
-
-        [JsonPropertyName("type")]
-        [BsonElement("type")]
-        public string Type { get; set; }
-
-        [JsonPropertyName("timestamp")]
-        [BsonElement("timestamp")]
-        public long Timestamp { get; set; }
-
-        [JsonPropertyName("platforms")]
-        [BsonElement("platforms")]
-        public string[] Platforms { get; set; }
-
-        [JsonPropertyName("isActive")]
-        [BsonElement("isActive")]
-        public bool IsActive { get; set; }
-
-        [JsonPropertyName("userTypes")]
-        [BsonElement("userTypes")]
-        public string[] UserTypes { get; set; }
-
-        [JsonPropertyName("appVersion")]
-        [BsonElement("appVersion")]
-        public int AppVersion { get; set; }
-
-        [JsonPropertyName("body")]
-        [BsonElement("body")]
-        public BodyComponent[] Body { get; set; }
-
-        [JsonIgnore]
-        [BsonElement("userIds")]
-        public string[] UserIds { get; set; }
-
-
-        [Obsolete]
-        [JsonPropertyName("title")]
-        [DataMember(Name = "title")]
-        [BsonElement("title")]
-        public string Title { get; set; }
-
-        [Obsolete]
-        [JsonPropertyName("description")]
-        [BsonElement("description")]
-        public string Description { get; set; }
-
-        [Obsolete]
-        [JsonPropertyName("callToActions")]
-        [BsonElement("callToActions")]
-        public CallToAction[] CallToActions { get; set; }
-    }
-
-    public class BodyComponent
-    {
-        [JsonPropertyName("type")]
-        [BsonElement("type")]
-        public string Type { get; set; }
-
-        [JsonPropertyName("platforms")]
-        [BsonElement("platforms")]
-        public string[] Platforms { get; set; }
-
-        [JsonPropertyName("style")]
-        [BsonElement("style")]
-        public Style Style { get; set; }
-
-        [JsonPropertyName("src")]
-        [BsonElement("src")]
-        public string Src { get; set; }
-
-        [JsonPropertyName("text")]
-        [BsonElement("text")]
-        public string Text { get; set; }
-
-        [JsonPropertyName("value")]
-        [BsonElement("value")]
-        public string Value { get; set; }
-
-        [JsonPropertyName("items")]
-        [BsonElement("items")]
-        public BodyComponent[] Items { get; set; }
-
-        [JsonPropertyName("actions")]
-        [BsonElement("actions")]
-        public CallToAction[] Actions { get; set; }
-    }
-
-    public class Style
-    {
-        [JsonPropertyName("marginTop")]
-        [BsonElement("marginTop")]
-        public int MarginTop { get; set; }
-
-        [JsonPropertyName("marginBottom")]
-        [BsonElement("marginBottom")]
-        public int MarginBottom { get; set; }
-
-        [JsonPropertyName("textAlign")]
-        [BsonElement("textAlign")]
-        public string TextAlign { get; set; }
-    }
-
-    public class CallToAction
-    {
-        [JsonPropertyName("type")]
-        [BsonElement("type")]
-        public string Type { get; set; }
-
-        [JsonPropertyName("platforms")]
-        [BsonElement("platforms")]
-        public string[] Platforms { get; set; }
-
-        [JsonPropertyName("data")]
-        [BsonElement("data")]
-        public string Data { get; set; }
-
-        [JsonPropertyName("title")]
-        [BsonElement("title")]
-        public string Title { get; set; }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Runtime.Serialization;
+using System.Text.Json.Serialization;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+
+namespace Notesnook.API.Models
+{
+    public class Announcement
+    {
+        public Announcement()
+        {
+            this.Id = ObjectId.GenerateNewId().ToString();
+        }
+
+        [BsonId]
+        [BsonRepresentation(BsonType.ObjectId)]
+        [BsonElement("id")]
+        [JsonPropertyName("id")]
+        public string Id { get; set; }
+
+        [JsonPropertyName("type")]
+        [BsonElement("type")]
+        public required string Type { get; set; }
+
+        [JsonPropertyName("timestamp")]
+        [BsonElement("timestamp")]
+        public long Timestamp { get; set; }
+
+        [JsonPropertyName("platforms")]
+        [BsonElement("platforms")]
+        public required string[] Platforms { get; set; }
+
+        [JsonPropertyName("isActive")]
+        [BsonElement("isActive")]
+        public bool IsActive { get; set; }
+
+        [JsonPropertyName("userTypes")]
+        [BsonElement("userTypes")]
+        public required string[] UserTypes { get; set; }
+
+        [JsonPropertyName("appVersion")]
+        [BsonElement("appVersion")]
+        public int AppVersion { get; set; }
+
+        [JsonPropertyName("body")]
+        [BsonElement("body")]
+        public required BodyComponent[] Body { get; set; }
+
+        [JsonIgnore]
+        [BsonElement("userIds")]
+        public string[]? UserIds { get; set; }
+
+
+        [Obsolete]
+        [JsonPropertyName("title")]
+        [DataMember(Name = "title")]
+        [BsonElement("title")]
+        public string? Title { get; set; }
+
+        [Obsolete]
+        [JsonPropertyName("description")]
+        [BsonElement("description")]
+        public string? Description { get; set; }
+
+        [Obsolete]
+        [JsonPropertyName("callToActions")]
+        [BsonElement("callToActions")]
+        public CallToAction[]? CallToActions { get; set; }
+    }
+
+    public class BodyComponent
+    {
+        [JsonPropertyName("type")]
+        [BsonElement("type")]
+        public required string Type { get; set; }
+
+        [JsonPropertyName("platforms")]
+        [BsonElement("platforms")]
+        public string[]? Platforms { get; set; }
+
+        [JsonPropertyName("style")]
+        [BsonElement("style")]
+        public Style? Style { get; set; }
+
+        [JsonPropertyName("src")]
+        [BsonElement("src")]
+        public string? Src { get; set; }
+
+        [JsonPropertyName("text")]
+        [BsonElement("text")]
+        public string? Text { get; set; }
+
+        [JsonPropertyName("value")]
+        [BsonElement("value")]
+        public string? Value { get; set; }
+
+        [JsonPropertyName("items")]
+        [BsonElement("items")]
+        public BodyComponent[]? Items { get; set; }
+
+        [JsonPropertyName("actions")]
+        [BsonElement("actions")]
+        public required CallToAction[] Actions { get; set; }
+    }
+
+    public class Style
+    {
+        [JsonPropertyName("marginTop")]
+        [BsonElement("marginTop")]
+        public int MarginTop { get; set; }
+
+        [JsonPropertyName("marginBottom")]
+        [BsonElement("marginBottom")]
+        public int MarginBottom { get; set; }
+
+        [JsonPropertyName("textAlign")]
+        [BsonElement("textAlign")]
+        public string? TextAlign { get; set; }
+    }
+
+    public class CallToAction
+    {
+        [JsonPropertyName("type")]
+        [BsonElement("type")]
+        public required string Type { get; set; }
+
+        [JsonPropertyName("platforms")]
+        [BsonElement("platforms")]
+        public string[]? Platforms { get; set; }
+
+        [JsonPropertyName("data")]
+        [BsonElement("data")]
+        public string? Data { get; set; }
+
+        [JsonPropertyName("title")]
+        [BsonElement("title")]
+        public string? Title { get; set; }
+    }
 }

Notesnook.API/Models/CompleteMultipartUploadRequestWrapper.cs

@@ -0,0 +1,30 @@
+using System.Collections.Generic;
+using Amazon.S3.Model;
+
+namespace Notesnook.API.Models;
+
+public class CompleteMultipartUploadRequestWrapper
+{
+    public required string Key { get; set; }
+    public required List<PartETagWrapper> PartETags { get; set; }
+    public required string UploadId { get; set; }
+
+    public CompleteMultipartUploadRequest ToRequest()
+    {
+        CompleteMultipartUploadRequest completeMultipartUploadRequest = new CompleteMultipartUploadRequest();
+        completeMultipartUploadRequest.Key = Key;
+        completeMultipartUploadRequest.UploadId = UploadId;
+        completeMultipartUploadRequest.PartETags = [];
+        foreach (var partETagWrapper in PartETags)
+        {
+            var partETag = new PartETag
+            {
+                PartNumber = partETagWrapper.PartNumber,
+                ETag = partETagWrapper.ETag
+            };
+            completeMultipartUploadRequest.PartETags.Add(partETag);
+        }
+
+        return completeMultipartUploadRequest;
+    }
+}

Notesnook.API/Models/DeleteAccountForm.cs

@@ -5,7 +5,7 @@ namespace Notesnook.API.Models
     public class DeleteAccountForm
     {
         [Required]
-        public string Password
+        public required string Password
         {
             get; set;
         }

Notesnook.API/Models/DeviceIdsChunk.cs

@@ -0,0 +1,16 @@
+using System.Collections.Generic;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+
+namespace Notesnook.API.Models
+{
+    public class DeviceIdsChunk
+    {
+        [BsonId]
+        public ObjectId Id { get; set; }
+        public required string UserId { get; set; }
+        public required string DeviceId { get; set; }
+        public required string Key { get; set; }
+        public required string[] Ids { get; set; } = [];
+    }
+}

Notesnook.API/Models/EncryptedData.cs

@@ -1,75 +1,69 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using MongoDB.Bson;
-using MongoDB.Bson.Serialization.Attributes;
-using Notesnook.API.Interfaces;
-using System.Runtime.Serialization;
-using System.Text.Json.Serialization;
-
-namespace Notesnook.API.Models
-{
-    [MessagePack.MessagePackObject]
-    public class EncryptedData : IEncrypted
-    {
-        [MessagePack.Key("iv")]
-        [JsonPropertyName("iv")]
-        [BsonElement("iv")]
-        [DataMember(Name = "iv")]
-        public string IV
-        {
-            get; set;
-        }
-
-        [MessagePack.Key("cipher")]
-        [JsonPropertyName("cipher")]
-        [BsonElement("cipher")]
-        [DataMember(Name = "cipher")]
-        public string Cipher
-        {
-            get; set;
-        }
-
-        [MessagePack.Key("length")]
-        [JsonPropertyName("length")]
-        [BsonElement("length")]
-        [DataMember(Name = "length")]
-        public long Length { get; set; }
-
-        [MessagePack.Key("salt")]
-        [JsonPropertyName("salt")]
-        [BsonElement("salt")]
-        [DataMember(Name = "salt")]
-        public string Salt { get; set; }
-
-        public override bool Equals(object obj)
-        {
-            if (obj is EncryptedData encryptedData)
-            {
-                return IV == encryptedData.IV && Salt == encryptedData.Salt && Cipher == encryptedData.Cipher && Length == encryptedData.Length;
-            }
-            return base.Equals(obj);
-        }
-
-        public bool IsEmpty()
-        {
-            return this.Cipher == null && this.IV == null && this.Length == 0 && this.Salt == null;
-        }
-    }
-}
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+using Notesnook.API.Interfaces;
+using System.Runtime.Serialization;
+using System.Text.Json.Serialization;
+
+namespace Notesnook.API.Models
+{
+    [MessagePack.MessagePackObject]
+    public class EncryptedData
+    {
+        [MessagePack.Key("iv")]
+        [JsonPropertyName("iv")]
+        [BsonElement("iv")]
+        [DataMember(Name = "iv")]
+        public required string IV { get; set; }
+
+        [MessagePack.Key("cipher")]
+        [JsonPropertyName("cipher")]
+        [BsonElement("cipher")]
+        [DataMember(Name = "cipher")]
+        public required string Cipher { get; set; }
+
+        [MessagePack.Key("length")]
+        [JsonPropertyName("length")]
+        [BsonElement("length")]
+        [DataMember(Name = "length")]
+        public long Length { get; set; }
+
+        [MessagePack.Key("salt")]
+        [JsonPropertyName("salt")]
+        [BsonElement("salt")]
+        [DataMember(Name = "salt")]
+        public required string Salt { get; set; }
+
+        public override bool Equals(object? obj)
+        {
+            if (obj is EncryptedData encryptedData)
+            {
+                return IV == encryptedData.IV && Salt == encryptedData.Salt && Cipher == encryptedData.Cipher && Length == encryptedData.Length;
+            }
+            return base.Equals(obj);
+        }
+
+        public bool IsEmpty()
+        {
+            return this.Cipher == null && this.IV == null && this.Length == 0 && this.Salt == null;
+        }
+    }
+}

Notesnook.API/Models/InboxApiKey.cs

@@ -0,0 +1,60 @@
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.Text.Json.Serialization;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+using NanoidDotNet;
+
+namespace Notesnook.API.Models
+{
+    public class InboxApiKey
+    {
+        public InboxApiKey()
+        {
+            var random = Nanoid.Generate(size: 64);
+            Key = "nn__" + random;
+        }
+
+        [BsonId]
+        [BsonIgnoreIfDefault]
+        [BsonRepresentation(BsonType.ObjectId)]
+        [JsonIgnore]
+        [MessagePack.IgnoreMember]
+        public string Id { get; set; } = string.Empty;
+
+        [JsonPropertyName("userId")]
+        public required string UserId { get; set; }
+
+        [JsonPropertyName("name")]
+        public required string Name { get; set; }
+
+        [JsonPropertyName("key")]
+        public string Key { get; set; } = string.Empty;
+
+        [JsonPropertyName("dateCreated")]
+        public long DateCreated { get; set; }
+
+        [JsonPropertyName("expiryDate")]
+        public long ExpiryDate { get; set; }
+
+        [JsonPropertyName("lastUsedAt")]
+        public long LastUsedAt { get; set; }
+    }
+}

Notesnook.API/Models/InboxSyncItem.cs

@@ -0,0 +1,67 @@
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.ComponentModel.DataAnnotations;
+using System.Runtime.Serialization;
+using System.Text.Json.Serialization;
+
+namespace Notesnook.API.Models
+{
+
+    [MessagePack.MessagePackObject]
+    public class InboxSyncItem : SyncItem
+    {
+        [DataMember(Name = "key")]
+        [JsonPropertyName("key")]
+        [MessagePack.Key("key")]
+        [Required]
+        public required EncryptedKey Key { get; set; }
+
+        [DataMember(Name = "salt")]
+        [JsonPropertyName("salt")]
+        [MessagePack.Key("salt")]
+        [Required]
+        public required string Salt { get; set; }
+    }
+
+    [MessagePack.MessagePackObject]
+    public class EncryptedKey
+    {
+        [DataMember(Name = "alg")]
+        [JsonPropertyName("alg")]
+        [MessagePack.Key("alg")]
+        [Required]
+        public required string Algorithm { get; set; }
+
+        [DataMember(Name = "cipher")]
+        [JsonPropertyName("cipher")]
+        [MessagePack.Key("cipher")]
+        [Required]
+        public required string Cipher { get; set; }
+
+        [JsonPropertyName("length")]
+        [DataMember(Name = "length")]
+        [MessagePack.Key("length")]
+        [Required]
+        public long Length
+        {
+            get; set;
+        }
+    }
+}

Notesnook.API/Models/Monograph.cs

@@ -1,67 +1,87 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System.Text.Json.Serialization;
-using MongoDB.Bson;
-using MongoDB.Bson.Serialization.Attributes;
-using Notesnook.API.Interfaces;
-
-namespace Notesnook.API.Models
-{
-    public class ObjectWithId
-    {
-        [BsonId]
-        [BsonRepresentation(BsonType.ObjectId)]
-        public string Id { get; set; }
-    }
-
-    public class Monograph : IMonograph
-    {
-        public Monograph()
-        {
-            Id = ObjectId.GenerateNewId().ToString();
-        }
-
-        [BsonId]
-        [BsonRepresentation(BsonType.ObjectId)]
-        public string Id { get; set; }
-
-        [JsonPropertyName("title")]
-        public string Title { get; set; }
-
-        [JsonPropertyName("userId")]
-        public string UserId { get; set; }
-
-        [JsonPropertyName("selfDestruct")]
-        public bool SelfDestruct { get; set; }
-
-        [JsonPropertyName("encryptedContent")]
-        public EncryptedData EncryptedContent { get; set; }
-
-        [JsonPropertyName("datePublished")]
-        public long DatePublished { get; set; }
-
-        [JsonPropertyName("content")]
-        [BsonIgnore]
-        public string Content { get; set; }
-
-        [JsonIgnore]
-        public byte[] CompressedContent { get; set; }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.Text.Json.Serialization;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+using System.Runtime.Serialization;
+
+namespace Notesnook.API.Models
+{
+    public class ObjectWithId
+    {
+        [BsonId]
+        [BsonIgnoreIfDefault]
+        [BsonRepresentation(BsonType.ObjectId)]
+        public required string Id { get; set; }
+
+        public required string ItemId { get; set; }
+    }
+
+    public class Monograph
+    {
+        public Monograph()
+        {
+            Id = ObjectId.GenerateNewId().ToString();
+        }
+
+        [DataMember(Name = "id")]
+        [JsonPropertyName("id")]
+        [MessagePack.Key("id")]
+        public string? ItemId { get; set; }
+
+        [BsonId]
+        [BsonIgnoreIfDefault]
+        [BsonRepresentation(BsonType.ObjectId)]
+        [JsonIgnore]
+        [MessagePack.IgnoreMember]
+        public string Id { get; set; } = string.Empty;
+
+        [JsonPropertyName("title")]
+        public string? Title { get; set; }
+
+        [JsonPropertyName("userId")]
+        public string? UserId { get; set; }
+
+        [JsonPropertyName("selfDestruct")]
+        public bool SelfDestruct { get; set; }
+
+        [JsonPropertyName("encryptedContent")]
+        public EncryptedData? EncryptedContent { get; set; }
+
+        [JsonPropertyName("datePublished")]
+        public long DatePublished { get; set; }
+
+        [JsonPropertyName("content")]
+        [BsonIgnore]
+        public string? Content { get; set; }
+
+        [JsonIgnore]
+        public byte[]? CompressedContent { get; set; }
+
+        [JsonPropertyName("password")]
+        public EncryptedData? Password { get; set; }
+
+        [JsonPropertyName("deleted")]
+        public bool Deleted { get; set; }
+
+        [JsonPropertyName("viewCount")]
+        public int ViewCount { get; set; }
+    }
 }

Notesnook.API/Models/MonographContent.cs

@@ -1,33 +1,35 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-using System.Text.Json.Serialization;
-
-namespace Streetwriters.Common.Attributes
-{
-    [AttributeUsage(AttributeTargets.Interface, AllowMultiple = false)]
-    public class JsonInterfaceConverterAttribute : JsonConverterAttribute
-    {
-        public JsonInterfaceConverterAttribute(Type converterType)
-            : base(converterType)
-        {
-        }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.Text.Json.Serialization;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+using System.Runtime.Serialization;
+
+namespace Notesnook.API.Models
+{
+
+    public class MonographContent
+    {
+        [JsonPropertyName("data")]
+        public required string Data { get; set; }
+        [JsonPropertyName("type")]
+        public required string Type { get; set; }
+    }
 }

Notesnook.API/Models/MonographMetadata.cs

@@ -1,42 +1,52 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using Notesnook.API.Models;
-using Streetwriters.Common.Interfaces;
-using Streetwriters.Common.Models;
-
-namespace Notesnook.API.Interfaces
-{
-    public interface IUserSettings : IDocument
-    {
-        string UserId { get; set; }
-
-        long LastSynced
-        {
-            get; set;
-        }
-
-        EncryptedData VaultKey
-        {
-            get; set;
-        }
-
-        string Salt { get; set; }
-    }
-}
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.Runtime.Serialization;
+using System.Text.Json.Serialization;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+
+namespace Notesnook.API.Models
+{
+    public class MonographMetadata
+    {
+        [DataMember(Name = "id")]
+        [JsonPropertyName("id")]
+        [MessagePack.Key("id")]
+        public required string ItemId
+        {
+            get; set;
+        }
+
+        [JsonPropertyName("title")]
+        public string? Title { get; set; }
+
+        [JsonPropertyName("selfDestruct")]
+        public bool SelfDestruct { get; set; }
+
+        [JsonPropertyName("datePublished")]
+        public long DatePublished { get; set; }
+
+        [JsonPropertyName("password")]
+        public EncryptedData? Password { get; set; }
+
+        [JsonPropertyName("deleted")]
+        public bool Deleted { get; set; }
+    }
+}

Notesnook.API/Models/MultipartUploadMeta.cs

@@ -1,27 +1,29 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-namespace Notesnook.API.Models
-{
-    public class MultipartUploadMeta
-    {
-        public string UploadId { get; set; }
-        public string[] Parts { get; set; }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+
+namespace Notesnook.API.Models
+{
+    public class MultipartUploadMeta
+    {
+        public string UploadId { get; set; } = string.Empty;
+        public string[] Parts { get; set; } = Array.Empty<string>();
+    }
 }

Notesnook.API/Models/PartETagWrapper.cs

@@ -0,0 +1,7 @@
+namespace Notesnook.API.Models;
+
+public class PartETagWrapper
+{
+    public int PartNumber { get; set; }
+    public string ETag { get; set; } = string.Empty;
+}

Notesnook.API/Models/Responses/SignupResponse.cs

@@ -1,14 +1,14 @@
-using System.Text.Json.Serialization;
-using Streetwriters.Common.Models;
-
-namespace Notesnook.API.Models.Responses
-{
-    public class SignupResponse : Response
-    {
-        [JsonPropertyName("userId")]
-        public string UserId { get; set; }
-
-        [JsonPropertyName("errors")]
-        public string[] Errors { get; set; }
-    }
-}
+using System.Text.Json.Serialization;
+using Streetwriters.Common.Models;
+
+namespace Notesnook.API.Models.Responses
+{
+    public class SignupResponse : Response
+    {
+        [JsonPropertyName("userId")]
+        public string? UserId { get; set; }
+
+        [JsonPropertyName("errors")]
+        public string[]? Errors { get; set; }
+    }
+}

Notesnook.API/Models/Responses/UserResponse.cs

@@ -1,25 +1,37 @@
-using System.Text.Json.Serialization;
-using Streetwriters.Common.Interfaces;
-using Streetwriters.Common.Models;
-
-namespace Notesnook.API.Models.Responses
-{
-    public class UserResponse : UserModel, IResponse
-    {
-        [JsonPropertyName("salt")]
-        public string Salt { get; set; }
-
-        [JsonPropertyName("attachmentsKey")]
-        public EncryptedData AttachmentsKey { get; set; }
-
-        [JsonPropertyName("subscription")]
-        public ISubscription Subscription { get; set; }
-
-        [JsonPropertyName("profile")]
-        public EncryptedData Profile { get; set; }
-
-        [JsonIgnore]
-        public bool Success { get; set; }
-        public int StatusCode { get; set; }
-    }
-}
+using System.Net.Http;
+using System.Text.Json.Serialization;
+using Streetwriters.Common.Interfaces;
+using Streetwriters.Common.Models;
+
+namespace Notesnook.API.Models.Responses
+{
+    public class UserResponse : UserModel, IResponse
+    {
+        [JsonPropertyName("salt")]
+        public string? Salt { get; set; }
+
+        [JsonPropertyName("attachmentsKey")]
+        public EncryptedData? AttachmentsKey { get; set; }
+
+        [JsonPropertyName("monographPasswordsKey")]
+        public EncryptedData? MonographPasswordsKey { get; set; }
+
+        [JsonPropertyName("inboxKeys")]
+        public InboxKeys? InboxKeys { get; set; }
+
+        [JsonPropertyName("subscription")]
+        public Subscription? Subscription { get; set; }
+
+        [JsonPropertyName("storageUsed")]
+        public long StorageUsed { get; set; }
+
+        [JsonPropertyName("totalStorage")]
+        public long TotalStorage { get; set; }
+
+        [JsonIgnore]
+        public bool Success { get; set; }
+        public int StatusCode { get; set; }
+        [JsonIgnore]
+        public HttpContent? Content { get; set; }
+    }
+}

Notesnook.API/Models/S3Options.cs

@@ -1,29 +1,29 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-namespace Notesnook.API.Models
-{
-    public class S3Options
-    {
-        public string ServiceUrl { get; set; }
-        public string Region { get; set; }
-        public string AccessKeyId { get; set; }
-        public string SecretAccessKey { get; set; }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace Notesnook.API.Models
+{
+    public class S3Options
+    {
+        public string ServiceUrl { get; set; } = string.Empty;
+        public string Region { get; set; } = string.Empty;
+        public string AccessKeyId { get; set; } = string.Empty;
+        public string SecretAccessKey { get; set; } = string.Empty;
+    }
 }

Notesnook.API/Models/SyncDevice.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+
+namespace Notesnook.API.Models
+{
+    public class SyncDevice
+    {
+        [BsonId]
+        public ObjectId Id { get; set; }
+
+        public required string UserId { get; set; }
+        public required string DeviceId { get; set; }
+        public required long LastAccessTime { get; set; }
+        public required bool IsSyncReset { get; set; }
+        public string? AppVersion { get; set; }
+        public string? DatabaseVersion { get; set; }
+    }
+}

Notesnook.API/Models/SyncItem.cs

@@ -44,7 +44,7 @@ namespace Notesnook.API.Models
         [DataMember(Name = "userId")]
         [JsonPropertyName("userId")]
         [MessagePack.Key("userId")]
-        public string UserId
+        public string? UserId
         {
             get; set;
         }
@@ -53,25 +53,19 @@ namespace Notesnook.API.Models
         [DataMember(Name = "iv")]
         [MessagePack.Key("iv")]
         [Required]
-        public string IV
-        {
-            get; set;
-        }
+        public string IV { get; set; } = string.Empty;
 
 
         [JsonPropertyName("cipher")]
         [DataMember(Name = "cipher")]
         [MessagePack.Key("cipher")]
         [Required]
-        public string Cipher
-        {
-            get; set;
-        }
+        public string Cipher { get; set; } = string.Empty;
 
         [DataMember(Name = "id")]
         [JsonPropertyName("id")]
         [MessagePack.Key("id")]
-        public string ItemId
+        public string? ItemId
         {
             get; set;
         }
@@ -108,10 +102,7 @@ namespace Notesnook.API.Models
         [DataMember(Name = "alg")]
         [MessagePack.Key("alg")]
         [Required]
-        public string Algorithm
-        {
-            get; set;
-        } = Algorithms.Default;
+        public string Algorithm { get; set; } = string.Empty;
     }
 
     public class SyncItemBsonSerializer : SerializerBase<SyncItem>
@@ -156,58 +147,50 @@ namespace Notesnook.API.Models
 
         public override SyncItem Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
         {
+            var syncItem = new SyncItem();
             var bsonReader = context.Reader;
             bsonReader.ReadStartDocument();
 
-            bsonReader.ReadBsonType();
-            bsonReader.SkipName();
-            var id = bsonReader.ReadObjectId();
-
-            bsonReader.ReadBsonType();
-            bsonReader.SkipName();
-            var dateSynced = bsonReader.ReadInt64();
-
-            bsonReader.ReadBsonType();
-            bsonReader.SkipName();
-            var userId = bsonReader.ReadString();
-
-            bsonReader.ReadBsonType();
-            bsonReader.SkipName();
-            var iv = bsonReader.ReadString();
-
-            bsonReader.ReadBsonType();
-            bsonReader.SkipName();
-            var cipher = bsonReader.ReadString();
-
-            bsonReader.ReadBsonType();
-            bsonReader.SkipName();
-            var itemId = bsonReader.ReadString();
-
-            bsonReader.ReadBsonType();
-            bsonReader.SkipName();
-            var length = bsonReader.ReadInt64();
-
-            bsonReader.ReadBsonType();
-            bsonReader.SkipName();
-            var version = bsonReader.ReadDouble();
-
-            bsonReader.ReadBsonType();
-            bsonReader.SkipName();
-            var algorithm = bsonReader.ReadString();
-
-            bsonReader.ReadEndDocument();
-            return new SyncItem
+            while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
             {
-                Id = id,
-                DateSynced = dateSynced,
-                UserId = userId,
-                IV = iv,
-                Cipher = cipher,
-                ItemId = itemId,
-                Length = length,
-                Version = version,
-                Algorithm = algorithm
-            };
+                var fieldName = bsonReader.ReadName();
+
+                switch (fieldName)
+                {
+                    case "DateSynced":
+                        syncItem.DateSynced = bsonReader.ReadInt64();
+                        break;
+                    case "UserId":
+                        syncItem.UserId = bsonReader.ReadString();
+                        break;
+                    case "IV":
+                        syncItem.IV = bsonReader.ReadString();
+                        break;
+                    case "Cipher":
+                        syncItem.Cipher = bsonReader.ReadString();
+                        break;
+                    case "ItemId":
+                        syncItem.ItemId = bsonReader.ReadString();
+                        break;
+                    case "_id":
+                        syncItem.Id = bsonReader.ReadObjectId();
+                        break;
+                    case "Length":
+                        syncItem.Length = bsonReader.ReadInt64();
+                        break;
+                    case "Version":
+                        syncItem.Version = bsonReader.ReadDouble();
+                        break;
+                    case "Algorithm":
+                        syncItem.Algorithm = bsonReader.ReadString();
+                        break;
+                    default:
+                        bsonReader.SkipValue();
+                        break;
+                }
+            }
+            bsonReader.ReadEndDocument();
+            return syncItem;
         }
     }
 }

Notesnook.API/Models/UserKeys.cs

@@ -17,16 +17,18 @@ You should have received a copy of the Affero GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-using System.Collections.Generic;
-using Streetwriters.Common.Enums;
-using Streetwriters.Common.Models;
-
-namespace Streetwriters.Common.Interfaces
+namespace Notesnook.API.Models
 {
-    public interface IOffer : IDocument
+    public class UserKeys
     {
-        ApplicationType AppId { get; set; }
-        string PromoCode { get; set; }
-        PromoCode[] Codes { get; set; }
+        public EncryptedData? AttachmentsKey { get; set; }
+        public EncryptedData? MonographPasswordsKey { get; set; }
+        public InboxKeys? InboxKeys { get; set; }
+    }
+
+    public class InboxKeys
+    {
+        public string? Public { get; set; }
+        public EncryptedData? Private { get; set; }
     }
 }

Notesnook.API/Models/UserSettings.cs

@@ -1,42 +1,65 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using MongoDB.Bson;
-using MongoDB.Bson.Serialization.Attributes;
-using Notesnook.API.Interfaces;
-
-namespace Notesnook.API.Models
-{
-    public class UserSettings : IUserSettings
-    {
-        public UserSettings()
-        {
-            this.Id = ObjectId.GenerateNewId().ToString();
-        }
-        public string UserId { get; set; }
-        public long LastSynced { get; set; }
-        public string Salt { get; set; }
-        public EncryptedData VaultKey { get; set; }
-        public EncryptedData AttachmentsKey { get; set; }
-
-        [BsonId]
-        [BsonRepresentation(BsonType.ObjectId)]
-        public string Id { get; set; }
-    }
-}
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+using Notesnook.API.Interfaces;
+
+namespace Notesnook.API.Models
+{
+    public class Limit
+    {
+        private long _value = 0;
+        public long Value
+        {
+            get => _value;
+            set
+            {
+                _value = value;
+                UpdatedAt = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
+            }
+        }
+        public long UpdatedAt
+        {
+            get;
+            set;
+        }
+    }
+
+    public class UserSettings
+    {
+        public UserSettings()
+        {
+            this.Id = ObjectId.GenerateNewId();
+        }
+        public required string UserId { get; set; }
+        public long LastSynced { get; set; }
+        public required string Salt { get; set; }
+        public EncryptedData? VaultKey { get; set; }
+        public EncryptedData? AttachmentsKey { get; set; }
+        public EncryptedData? MonographPasswordsKey { get; set; }
+        public InboxKeys? InboxKeys { get; set; }
+        public Limit? StorageLimit { get; set; }
+
+        [BsonId]
+        [BsonRepresentation(BsonType.ObjectId)]
+        public ObjectId Id { get; set; }
+    }
+}

Notesnook.API/Notesnook.API.csproj

@@ -1,11 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <StartupObject>Notesnook.API.Program</StartupObject>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="AngleSharp" Version="1.3.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.Aws.S3" Version="9.0.0" />
     <PackageReference Include="AWSSDK.Core" Version="3.7.304.31" />
     <PackageReference Include="DotNetEnv" Version="2.3.0" />
     <PackageReference Include="IdentityModel.AspNetCore.OAuth2Introspection" Version="6.2.0" />
@@ -15,8 +18,11 @@
     <PackageReference Include="AWSSDK.S3" Version="3.7.310.8" />
     <PackageReference Include="Microsoft.AspNetCore.SignalR.Protocols.MessagePack" Version="6.0.3" />
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel.Https" Version="2.2.0" />
+    <PackageReference Include="Nanoid" Version="3.1.0" />
     <PackageReference Include="OpenTelemetry.Exporter.Prometheus.AspNetCore" Version="1.9.0-alpha.2" />
     <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.8.1" />
+    <PackageReference Include="Quartz" Version="3.5.0" />
+    <PackageReference Include="Quartz.AspNetCore" Version="3.5.0" />
   </ItemGroup>
 
   <ItemGroup>

Notesnook.API/Program.cs

@@ -1,68 +1,69 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#if !DEBUG
-using System.Net;
-#endif
-using System;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Hosting;
-using Streetwriters.Common;
-using System.Linq;
-using Microsoft.Extensions.Logging;
-using System.Net;
-
-namespace Notesnook.API
-{
-    public class Program
-    {
-        public static async Task Main(string[] args)
-        {
-#if DEBUG
-            DotNetEnv.Env.TraversePath().Load(".env.local");
-#else
-            DotNetEnv.Env.TraversePath().Load(".env");
-#endif
-            IHost host = CreateHostBuilder(args).Build();
-            await host.RunAsync();
-        }
-
-        public static IHostBuilder CreateHostBuilder(string[] args) =>
-            Host.CreateDefaultBuilder(args)
-                .ConfigureWebHostDefaults(webBuilder =>
-                {
-                    webBuilder
-                    .UseStartup<Startup>()
-                    .UseKestrel((options) =>
-                    {
-                        options.Limits.MaxRequestBodySize = long.MaxValue;
-                        options.ListenAnyIP(Servers.NotesnookAPI.Port);
-                        if (Servers.NotesnookAPI.IsSecure)
-                        {
-                            options.ListenAnyIP(443, listenerOptions =>
-                            {
-                                listenerOptions.UseHttps(Servers.NotesnookAPI.SSLCertificate);
-                            });
-                        }
-                        options.Listen(IPAddress.Parse("127.0.0.1"), 5067);
-                    });
-                });
-    }
-}
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.Net;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using Streetwriters.Common;
+
+namespace Notesnook.API
+{
+    public class Program
+    {
+        public static async Task Main(string[] args)
+        {
+#if (DEBUG || STAGING)
+            DotNetEnv.Env.TraversePath().Load(".env.local");
+#else
+            DotNetEnv.Env.TraversePath().Load(".env");
+#endif
+            IHost host = CreateHostBuilder(args).Build();
+            await host.RunAsync();
+        }
+
+        public static IHostBuilder CreateHostBuilder(string[] args) =>
+            Host.CreateDefaultBuilder(args)
+                .ConfigureLogging(logging =>
+                {
+                    logging.ClearProviders();
+                    logging.AddConsole();
+                    logging.AddSystemdConsole();
+                })
+                .ConfigureWebHostDefaults(webBuilder =>
+                {
+                    webBuilder
+                    .UseStartup<Startup>()
+                    .UseKestrel((options) =>
+                    {
+                        options.Limits.MaxRequestBodySize = long.MaxValue;
+                        options.ListenAnyIP(Servers.NotesnookAPI.Port);
+                        if (Servers.NotesnookAPI.IsSecure && Servers.NotesnookAPI.SSLCertificate != null)
+                        {
+                            options.ListenAnyIP(443, listenerOptions =>
+                            {
+                                listenerOptions.UseHttps(Servers.NotesnookAPI.SSLCertificate);
+                            });
+                        }
+                        options.Listen(IPAddress.Parse("127.0.0.1"), 5067);
+                    });
+                });
+    }
+}

Notesnook.API/Repositories/SyncItemsRepository.cs

@@ -26,6 +26,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using IdentityModel;
 using Microsoft.VisualBasic;
+using Microsoft.Extensions.Logging;
 using MongoDB.Bson;
 using MongoDB.Driver;
 using Notesnook.API.Hubs;
@@ -41,19 +42,14 @@ namespace Notesnook.API.Repositories
     public class SyncItemsRepository : Repository<SyncItem>
     {
         private readonly string collectionName;
-        public SyncItemsRepository(IDbContext dbContext, IMongoCollection<SyncItem> collection) : base(dbContext, collection)
+        private readonly ILogger<SyncItemsRepository> logger;
+        public SyncItemsRepository(IDbContext dbContext, IMongoCollection<SyncItem> collection, ILogger<SyncItemsRepository> logger) : base(dbContext, collection)
         {
             this.collectionName = collection.CollectionNamespace.CollectionName;
-#if DEBUG
-            Collection.Indexes.CreateMany([
-                new CreateIndexModel<SyncItem>(Builders<SyncItem>.IndexKeys.Ascending("UserId").Descending("DateSynced")),
-                new CreateIndexModel<SyncItem>(Builders<SyncItem>.IndexKeys.Ascending("UserId").Ascending("ItemId")),
-                new CreateIndexModel<SyncItem>(Builders<SyncItem>.IndexKeys.Ascending("UserId"))
-            ]);
-#endif
+            this.logger = logger;
         }
 
-        private readonly List<string> ALGORITHMS = [Algorithms.Default];
+        private readonly List<string> ALGORITHMS = [Algorithms.Default, Algorithms.XSAL_X25519_7];
         private bool IsValidAlgorithm(string algorithm)
         {
             return ALGORITHMS.Contains(algorithm);
@@ -117,10 +113,14 @@ namespace Notesnook.API.Repositories
             // Handle case where the cipher is corrupted.
             if (!IsBase64String(item.Cipher))
             {
-                Slogger<SyncHub>.Error("Upsert", "Corrupted", item.ItemId, item.Length.ToString(), item.Cipher);
+                logger.LogError("Corrupted item {ItemId} in collection {CollectionName}. Length: {Length}, Cipher: {Cipher}",
+                    item.ItemId, this.collectionName, item.Length, item.Cipher);
                 throw new Exception($"Corrupted item \"{item.ItemId}\" in collection \"{this.collectionName}\". Please report this error to support@streetwriters.co.");
             }
 
+            if (item.ItemId == null)
+                throw new Exception($"Item does not have an ItemId.");
+
             item.DateSynced = dateSynced;
             item.UserId = userId;
 
@@ -151,10 +151,14 @@ namespace Notesnook.API.Repositories
                 // Handle case where the cipher is corrupted.
                 if (!IsBase64String(item.Cipher))
                 {
-                    Slogger<SyncHub>.Error("Upsert", "Corrupted", item.ItemId, item.Length.ToString(), item.Cipher);
+                    logger.LogError("Corrupted item {ItemId} in collection {CollectionName}. Length: {Length}, Cipher: {Cipher}",
+                        item.ItemId, this.collectionName, item.Length, item.Cipher);
                     throw new Exception($"Corrupted item \"{item.ItemId}\" in collection \"{this.collectionName}\". Please report this error to support@streetwriters.co.");
                 }
 
+                if (item.ItemId == null)
+                    throw new Exception($"Item does not have an ItemId.");
+
                 var filter = Builders<SyncItem>.Filter.And(
                     userIdFilter,
                     Builders<SyncItem>.Filter.Eq("ItemId", item.ItemId)

Notesnook.API/Services/S3Service.cs

@@ -27,10 +27,18 @@ using Amazon;
 using Amazon.Runtime;
 using Amazon.S3;
 using Amazon.S3.Model;
+using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
+using MongoDB.Driver;
+using Notesnook.API.Accessors;
+using Notesnook.API.Helpers;
 using Notesnook.API.Interfaces;
 using Notesnook.API.Models;
 using Streetwriters.Common;
+using Streetwriters.Common.Accessors;
+using Streetwriters.Common.Enums;
+using Streetwriters.Common.Interfaces;
+using Streetwriters.Common.Models;
 
 namespace Notesnook.API.Services
 {
@@ -42,9 +50,11 @@ namespace Notesnook.API.Services
 
     public class S3Service : IS3Service
     {
-        private readonly string BUCKET_NAME = Constants.S3_BUCKET_NAME ?? "";
-        private readonly string INTERNAL_BUCKET_NAME = Constants.S3_INTERNAL_BUCKET_NAME ?? "";
-        private AmazonS3Client S3Client { get; }
+        private readonly string BUCKET_NAME = Constants.S3_BUCKET_NAME;
+        private readonly string INTERNAL_BUCKET_NAME = Constants.S3_INTERNAL_BUCKET_NAME ?? Constants.S3_BUCKET_NAME;
+        private readonly S3FailoverHelper S3Client;
+        private ISyncItemsRepositoryAccessor Repositories { get; }
+        private WampServiceAccessor ServiceAccessor { get; }
 
         // When running in a dockerized environment the sync server doesn't have access
         // to the host's S3 Service URL. It can only talk to S3 server via its own internal
@@ -54,52 +64,49 @@ namespace Notesnook.API.Services
         // URLs generated by S3 are host specific. Changing their hostname on the fly causes
         // SignatureDoesNotMatch error.
         // That is why we create 2 separate S3 clients. One for internal traffic and one for external.
-        private AmazonS3Client S3InternalClient { get; }
-        private HttpClient httpClient = new HttpClient();
+        private readonly S3FailoverHelper S3InternalClient;
+        private readonly HttpClient httpClient = new();
 
-        public S3Service()
+        public S3Service(ISyncItemsRepositoryAccessor syncItemsRepositoryAccessor, WampServiceAccessor wampServiceAccessor, ILogger<S3Service> logger)
         {
-            var config = new AmazonS3Config
-            {
-#if DEBUG
-                ServiceURL = Servers.S3Server.ToString(),
-#else
-                ServiceURL = Constants.S3_SERVICE_URL,
-                AuthenticationRegion = Constants.S3_REGION,
-#endif
-                ForcePathStyle = true,
-                SignatureMethod = SigningAlgorithm.HmacSHA256,
-                SignatureVersion = "4"
-            };
-#if DEBUG
-            S3Client = new AmazonS3Client("S3RVER", "S3RVER", config);
-#else
-            S3Client = new AmazonS3Client(Constants.S3_ACCESS_KEY_ID, Constants.S3_ACCESS_KEY, config);
-#endif
+            Repositories = syncItemsRepositoryAccessor;
+            ServiceAccessor = wampServiceAccessor;
+            S3Client = new S3FailoverHelper(
+                S3ClientFactory.CreateS3Clients(
+                    Constants.S3_SERVICE_URL,
+                    Constants.S3_REGION,
+                    Constants.S3_ACCESS_KEY_ID,
+                    Constants.S3_ACCESS_KEY,
+                    forcePathStyle: true
+                ),
+                logger: logger
+            );
 
-            if (!string.IsNullOrEmpty(Constants.S3_INTERNAL_SERVICE_URL))
+            if (!string.IsNullOrEmpty(Constants.S3_INTERNAL_SERVICE_URL) && !string.IsNullOrEmpty(Constants.S3_INTERNAL_BUCKET_NAME))
             {
-                S3InternalClient = new AmazonS3Client(Constants.S3_ACCESS_KEY_ID, Constants.S3_ACCESS_KEY, new AmazonS3Config
-                {
-                    ServiceURL = Constants.S3_INTERNAL_SERVICE_URL,
-                    AuthenticationRegion = Constants.S3_REGION,
-                    ForcePathStyle = true,
-                    SignatureMethod = SigningAlgorithm.HmacSHA256,
-                    SignatureVersion = "4"
-                });
+                S3InternalClient = new S3FailoverHelper(
+                    S3ClientFactory.CreateS3Clients(
+                        Constants.S3_INTERNAL_SERVICE_URL,
+                        Constants.S3_REGION,
+                        Constants.S3_ACCESS_KEY_ID,
+                        Constants.S3_ACCESS_KEY,
+                        forcePathStyle: true
+                    ),
+                    logger: logger
+                );
             }
+            else S3InternalClient = S3Client;
 
             AWSConfigsS3.UseSignatureVersion4 = true;
         }
 
         public async Task DeleteObjectAsync(string userId, string name)
         {
-            var objectName = GetFullObjectName(userId, name);
-            if (objectName == null) throw new Exception("Invalid object name."); ;
+            var objectName = GetFullObjectName(userId, name) ?? throw new Exception("Invalid object name.");
 
-            var response = await GetS3Client(S3ClientMode.INTERNAL).DeleteObjectAsync(GetBucketName(S3ClientMode.INTERNAL), objectName);
+            var response = await S3InternalClient.ExecuteWithFailoverAsync((client) => client.DeleteObjectAsync(INTERNAL_BUCKET_NAME, objectName), operationName: "DeleteObject", isWriteOperation: true);
 
-            if (!IsSuccessStatusCode(((int)response.HttpStatusCode)))
+            if (!IsSuccessStatusCode((int)response.HttpStatusCode))
                 throw new Exception("Could not delete object.");
         }
 
@@ -107,7 +114,7 @@ namespace Notesnook.API.Services
         {
             var request = new ListObjectsV2Request
             {
-                BucketName = GetBucketName(S3ClientMode.INTERNAL),
+                BucketName = INTERNAL_BUCKET_NAME,
                 Prefix = userId,
             };
 
@@ -115,7 +122,7 @@ namespace Notesnook.API.Services
             var keys = new List<KeyVersion>();
             do
             {
-                response = await GetS3Client(S3ClientMode.INTERNAL).ListObjectsV2Async(request);
+                response = await S3InternalClient.ExecuteWithFailoverAsync((client) => client.ListObjectsV2Async(request), operationName: "ListObjectsV2");
                 response.S3Objects.ForEach(obj => keys.Add(new KeyVersion
                 {
                     Key = obj.Key,
@@ -127,12 +134,11 @@ namespace Notesnook.API.Services
 
             if (keys.Count <= 0) return;
 
-            var deleteObjectsResponse = await GetS3Client(S3ClientMode.INTERNAL)
-            .DeleteObjectsAsync(new DeleteObjectsRequest
+            var deleteObjectsResponse = await S3InternalClient.ExecuteWithFailoverAsync((client) => client.DeleteObjectsAsync(new DeleteObjectsRequest
             {
-                BucketName = GetBucketName(S3ClientMode.INTERNAL),
+                BucketName = INTERNAL_BUCKET_NAME,
                 Objects = keys,
-            });
+            }), operationName: "DeleteObjects", isWriteOperation: true);
 
             if (!IsSuccessStatusCode((int)deleteObjectsResponse.HttpStatusCode))
                 throw new Exception("Could not delete directory.");
@@ -140,7 +146,7 @@ namespace Notesnook.API.Services
 
         public async Task<long> GetObjectSizeAsync(string userId, string name)
         {
-            var url = this.GetPresignedURL(userId, name, HttpVerb.HEAD, S3ClientMode.INTERNAL);
+            var url = await this.GetPresignedURLAsync(userId, name, HttpVerb.HEAD, S3ClientMode.INTERNAL);
             if (url == null) return 0;
 
             var request = new HttpRequestMessage(HttpMethod.Head, url);
@@ -149,29 +155,42 @@ namespace Notesnook.API.Services
         }
 
 
-        public string GetUploadObjectUrl(string userId, string name)
+        public async Task<string?> GetUploadObjectUrlAsync(string userId, string name)
         {
-            var url = this.GetPresignedURL(userId, name, HttpVerb.PUT);
+            return await this.GetPresignedURLAsync(userId, name, HttpVerb.PUT);
+        }
+
+        public async Task<string?> GetInternalUploadObjectUrlAsync(string userId, string name)
+        {
+            return await this.GetPresignedURLAsync(userId, name, HttpVerb.PUT, S3ClientMode.INTERNAL);
+        }
+
+        public async Task<string?> GetDownloadObjectUrlAsync(string userId, string name)
+        {
+            // var subscriptionService = await WampServers.SubscriptionServer.GetServiceAsync<IUserSubscriptionService>(SubscriptionServerTopics.UserSubscriptionServiceTopic);
+            // var subscription = await subscriptionService.GetUserSubscriptionAsync(Clients.Notesnook.Id, userId);
+
+            // var size = await GetObjectSizeAsync(userId, name);
+            // if (StorageHelper.IsFileSizeExceeded(subscription, size))
+            // {
+            //     var fileSizeLimit = StorageHelper.GetFileSizeLimitForPlan(subscription);
+            //     throw new Exception($"You cannot download files larger than {StorageHelper.FormatBytes(fileSizeLimit)} on this plan.");
+            // }
+
+            var url = await this.GetPresignedURLAsync(userId, name, HttpVerb.GET);
             if (url == null) return null;
             return url;
         }
 
-        public string GetDownloadObjectUrl(string userId, string name)
-        {
-            var url = this.GetPresignedURL(userId, name, HttpVerb.GET);
-            if (url == null) return null;
-            return url;
-        }
-
-        public async Task<MultipartUploadMeta> StartMultipartUploadAsync(string userId, string name, int parts, string uploadId = null)
+        public async Task<MultipartUploadMeta> StartMultipartUploadAsync(string userId, string name, int parts, string? uploadId = null)
         {
             var objectName = GetFullObjectName(userId, name);
             if (userId == null || objectName == null) throw new Exception("Could not initiate multipart upload.");
 
             if (string.IsNullOrEmpty(uploadId))
             {
-                var response = await GetS3Client(S3ClientMode.INTERNAL).InitiateMultipartUploadAsync(GetBucketName(S3ClientMode.INTERNAL), objectName);
-                if (!IsSuccessStatusCode(((int)response.HttpStatusCode))) throw new Exception("Failed to initiate multipart upload.");
+                var response = await S3InternalClient.ExecuteWithFailoverAsync((client) => client.InitiateMultipartUploadAsync(INTERNAL_BUCKET_NAME, objectName), operationName: "InitiateMultipartUpload", isWriteOperation: true);
+                if (!IsSuccessStatusCode((int)response.HttpStatusCode)) throw new Exception("Failed to initiate multipart upload.");
 
                 uploadId = response.UploadId;
             }
@@ -179,7 +198,7 @@ namespace Notesnook.API.Services
             var signedUrls = new string[parts];
             for (var i = 0; i < parts; ++i)
             {
-                signedUrls[i] = GetPresignedURLForUploadPart(objectName, uploadId, i + 1);
+                signedUrls[i] = await GetPresignedURLForUploadPartAsync(objectName, uploadId, i + 1);
             }
 
             return new MultipartUploadMeta
@@ -194,81 +213,126 @@ namespace Notesnook.API.Services
             var objectName = GetFullObjectName(userId, name);
             if (userId == null || objectName == null) throw new Exception("Could not abort multipart upload.");
 
-            var response = await GetS3Client(S3ClientMode.INTERNAL).AbortMultipartUploadAsync(GetBucketName(S3ClientMode.INTERNAL), objectName, uploadId);
+            var response = await S3InternalClient.ExecuteWithFailoverAsync((client) => client.AbortMultipartUploadAsync(INTERNAL_BUCKET_NAME, objectName, uploadId), operationName: "AbortMultipartUpload", isWriteOperation: true);
             if (!IsSuccessStatusCode(((int)response.HttpStatusCode))) throw new Exception("Failed to abort multipart upload.");
         }
 
+        private async Task<long> GetMultipartUploadSizeAsync(string userId, string key, string uploadId)
+        {
+            var objectName = GetFullObjectName(userId, key);
+            var parts = await S3InternalClient.ExecuteWithFailoverAsync((client) => client.ListPartsAsync(INTERNAL_BUCKET_NAME, objectName, uploadId), operationName: "ListParts");
+            long totalSize = 0;
+            foreach (var part in parts.Parts)
+            {
+                totalSize += part.Size;
+            }
+            return totalSize;
+        }
+
         public async Task CompleteMultipartUploadAsync(string userId, CompleteMultipartUploadRequest uploadRequest)
         {
             var objectName = GetFullObjectName(userId, uploadRequest.Key);
             if (userId == null || objectName == null) throw new Exception("Could not abort multipart upload.");
 
+            var userSettings = await Repositories.UsersSettings.FindOneAsync((u) => u.UserId == userId);
+            if (userSettings == null)
+            {
+                await this.AbortMultipartUploadAsync(userId, uploadRequest.Key, uploadRequest.UploadId);
+                throw new Exception("User settings not found.");
+            }
+            userSettings.StorageLimit ??= StorageHelper.RolloverStorageLimit(userSettings.StorageLimit);
+
+            if (!Constants.IS_SELF_HOSTED)
+            {
+                var subscription = await ServiceAccessor.UserSubscriptionService.GetUserSubscriptionAsync(Clients.Notesnook.Id, userId) ?? throw new Exception("User subscription not found.");
+
+                long fileSize = await GetMultipartUploadSizeAsync(userId, uploadRequest.Key, uploadRequest.UploadId);
+                if (StorageHelper.IsFileSizeExceeded(subscription, fileSize))
+                {
+                    await this.AbortMultipartUploadAsync(userId, uploadRequest.Key, uploadRequest.UploadId);
+                    throw new Exception("Max file size exceeded.");
+                }
+
+                userSettings.StorageLimit.Value += fileSize;
+                if (StorageHelper.IsStorageLimitReached(subscription, userSettings.StorageLimit.Value))
+                {
+                    await this.AbortMultipartUploadAsync(userId, uploadRequest.Key, uploadRequest.UploadId);
+                    throw new Exception("Storage limit reached.");
+                }
+            }
+
             uploadRequest.Key = objectName;
-            uploadRequest.BucketName = GetBucketName(S3ClientMode.INTERNAL);
-            var response = await GetS3Client(S3ClientMode.INTERNAL).CompleteMultipartUploadAsync(uploadRequest);
-            if (!IsSuccessStatusCode(((int)response.HttpStatusCode))) throw new Exception("Failed to complete multipart upload.");
+            uploadRequest.BucketName = INTERNAL_BUCKET_NAME;
+            var response = await S3InternalClient.ExecuteWithFailoverAsync((client) => client.CompleteMultipartUploadAsync(uploadRequest), operationName: "CompleteMultipartUpload", isWriteOperation: true);
+            if (!IsSuccessStatusCode((int)response.HttpStatusCode)) throw new Exception("Failed to complete multipart upload.");
+
+            if (!Constants.IS_SELF_HOSTED)
+            {
+                await Repositories.UsersSettings.UpsertAsync(userSettings, (u) => u.UserId == userId);
+                await Repositories.UsersSettings.Collection.UpdateOneAsync(
+                    Builders<UserSettings>.Filter.Eq(u => u.UserId, userId),
+                    Builders<UserSettings>.Update.Set(u => u.StorageLimit, userSettings.StorageLimit)
+                );
+            }
         }
 
-        private string GetPresignedURL(string userId, string name, HttpVerb httpVerb, S3ClientMode mode = S3ClientMode.EXTERNAL)
+        private async Task<string?> GetPresignedURLAsync(string userId, string name, HttpVerb httpVerb, S3ClientMode mode = S3ClientMode.EXTERNAL)
         {
             var objectName = GetFullObjectName(userId, name);
             if (userId == null || objectName == null) return null;
 
-            var request = new GetPreSignedUrlRequest
+            var client = mode == S3ClientMode.INTERNAL ? S3InternalClient : S3Client;
+            var bucketName = mode == S3ClientMode.INTERNAL ? INTERNAL_BUCKET_NAME : BUCKET_NAME;
+
+            return await client.ExecuteWithFailoverAsync(client =>
             {
-                BucketName = GetBucketName(mode),
-                Expires = System.DateTime.Now.AddHours(1),
-                Verb = httpVerb,
-                Key = objectName,
-#if DEBUG
-                Protocol = Protocol.HTTP,
+                var request = new GetPreSignedUrlRequest
+                {
+                    BucketName = bucketName,
+                    Expires = System.DateTime.Now.AddHours(1),
+                    Verb = httpVerb,
+                    Key = objectName,
+#if (DEBUG || STAGING)
+                    Protocol = Protocol.HTTP,
 #else
-                Protocol = Constants.IS_SELF_HOSTED ? Protocol.HTTP : Protocol.HTTPS,
+                    Protocol = client.Config.ServiceURL.StartsWith("http://") ? Protocol.HTTP : Protocol.HTTPS,
 #endif
-            };
-            return GetS3Client(mode).GetPreSignedURL(request);
+                };
+                return client.GetPreSignedURLAsync(request);
+            }, operationName: "GetPreSignedURL");
         }
 
-        private string GetPresignedURLForUploadPart(string objectName, string uploadId, int partNumber)
+        private Task<string> GetPresignedURLForUploadPartAsync(string objectName, string uploadId, int partNumber, S3ClientMode mode = S3ClientMode.EXTERNAL)
         {
 
-            return GetS3Client(S3ClientMode.INTERNAL).GetPreSignedURL(new GetPreSignedUrlRequest
+            var client = mode == S3ClientMode.INTERNAL ? S3InternalClient : S3Client;
+            var bucketName = mode == S3ClientMode.INTERNAL ? INTERNAL_BUCKET_NAME : BUCKET_NAME;
+
+            return client.ExecuteWithFailoverAsync(c => c.GetPreSignedURLAsync(new GetPreSignedUrlRequest
             {
-                BucketName = GetBucketName(S3ClientMode.INTERNAL),
+                BucketName = bucketName,
                 Expires = System.DateTime.Now.AddHours(1),
                 Verb = HttpVerb.PUT,
                 Key = objectName,
                 PartNumber = partNumber,
                 UploadId = uploadId,
-#if DEBUG
+#if (DEBUG || STAGING)
                 Protocol = Protocol.HTTP,
 #else
-                Protocol = Constants.IS_SELF_HOSTED ? Protocol.HTTP : Protocol.HTTPS,
+                Protocol = c.Config.ServiceURL.StartsWith("http://") ? Protocol.HTTP : Protocol.HTTPS,
 #endif
-            });
+            }), operationName: "GetPreSignedURL");
         }
 
-        private string GetFullObjectName(string userId, string name)
+        private static string? GetFullObjectName(string userId, string name)
         {
             if (userId == null || !Regex.IsMatch(name, "[0-9a-zA-Z!" + Regex.Escape("-") + "_.*'()]")) return null;
             return $"{userId}/{name}";
         }
 
-        bool IsSuccessStatusCode(int statusCode)
+        static bool IsSuccessStatusCode(int statusCode)
         {
             return ((int)statusCode >= 200) && ((int)statusCode <= 299);
         }
-
-        AmazonS3Client GetS3Client(S3ClientMode mode = S3ClientMode.EXTERNAL)
-        {
-            if (mode == S3ClientMode.INTERNAL && S3InternalClient != null) return S3InternalClient;
-            return S3Client;
-        }
-
-        string GetBucketName(S3ClientMode mode = S3ClientMode.EXTERNAL)
-        {
-            if (mode == S3ClientMode.INTERNAL && S3InternalClient != null) return INTERNAL_BUCKET_NAME;
-            return BUCKET_NAME;
-        }
     }
 }

Notesnook.API/Services/SyncDeviceService.cs

@@ -24,200 +24,201 @@ using System.IO;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using MongoDB.Driver;
+using Notesnook.API.Interfaces;
+using Notesnook.API.Models;
 
 namespace Notesnook.API.Services
 {
-    public struct SyncDevice(ref string userId, ref string deviceId)
+    public readonly record struct ItemKey(string ItemId, string Type)
     {
-        public readonly string DeviceId = deviceId;
-        public readonly string UserId = userId;
-
-        private string userSyncDirectoryPath = null;
-        public string UserSyncDirectoryPath
-        {
-            get
-            {
-                userSyncDirectoryPath ??= Path.Join("sync", UserId);
-                return userSyncDirectoryPath;
-            }
-        }
-        private string userDeviceDirectoryPath = null;
-        public string UserDeviceDirectoryPath
-        {
-            get
-            {
-                userDeviceDirectoryPath ??= Path.Join(UserSyncDirectoryPath, DeviceId);
-                return userDeviceDirectoryPath;
-            }
-        }
-        private string pendingIdsFilePath = null;
-        public string PendingIdsFilePath
-        {
-            get
-            {
-                pendingIdsFilePath ??= Path.Join(UserDeviceDirectoryPath, "pending");
-                return pendingIdsFilePath;
-            }
-        }
-        private string unsyncedIdsFilePath = null;
-        public string UnsyncedIdsFilePath
-        {
-            get
-            {
-                unsyncedIdsFilePath ??= Path.Join(UserDeviceDirectoryPath, "unsynced");
-                return unsyncedIdsFilePath;
-            }
-        }
-        private string resetSyncFilePath = null;
-        public string ResetSyncFilePath
-        {
-            get
-            {
-                resetSyncFilePath ??= Path.Join(UserDeviceDirectoryPath, "reset-sync");
-                return resetSyncFilePath;
-            }
-        }
+        public override string ToString() => $"{ItemId}:{Type}";
     }
-    public class SyncDeviceService(SyncDevice device)
+    public class SyncDeviceService(ISyncItemsRepositoryAccessor repositories, ILogger<SyncDeviceService> logger)
     {
-        public async Task<string[]> GetUnsyncedIdsAsync()
-        {
-            try
-            {
-                return await File.ReadAllLinesAsync(device.UnsyncedIdsFilePath);
-            }
-            catch { return []; }
-        }
+        private static FilterDefinition<SyncDevice> DeviceFilter(string userId, string deviceId) =>
+            Builders<SyncDevice>.Filter.Eq(x => x.UserId, userId) &
+            Builders<SyncDevice>.Filter.Eq(x => x.DeviceId, deviceId);
+        private static FilterDefinition<DeviceIdsChunk> DeviceIdsChunkFilter(string userId, string deviceId, string key) =>
+            Builders<DeviceIdsChunk>.Filter.Eq(x => x.UserId, userId) &
+            Builders<DeviceIdsChunk>.Filter.Eq(x => x.DeviceId, deviceId) &
+            Builders<DeviceIdsChunk>.Filter.Eq(x => x.Key, key);
 
-        public async Task<string[]> GetUnsyncedIdsAsync(string deviceId)
-        {
-            try
-            {
-                return await File.ReadAllLinesAsync(Path.Join(device.UserSyncDirectoryPath, deviceId, "unsynced"));
-            }
-            catch { return []; }
-        }
+        private static FilterDefinition<DeviceIdsChunk> DeviceIdsChunkFilter(string userId, string deviceId) =>
+            Builders<DeviceIdsChunk>.Filter.Eq(x => x.UserId, userId) &
+            Builders<DeviceIdsChunk>.Filter.Eq(x => x.DeviceId, deviceId);
 
-        public async Task<string[]> FetchUnsyncedIdsAsync()
+        private static FilterDefinition<DeviceIdsChunk> DeviceIdsChunkFilter(string userId) =>
+            Builders<DeviceIdsChunk>.Filter.Eq(x => x.UserId, userId);
+
+        private static FilterDefinition<SyncDevice> UserFilter(string userId) => Builders<SyncDevice>.Filter.Eq(x => x.UserId, userId);
+
+
+        public async Task<HashSet<ItemKey>> GetIdsAsync(string userId, string deviceId, string key)
         {
-            if (IsSyncReset()) return Array.Empty<string>();
-            if (UnsyncedIdsFileLocks.TryGetValue(device.DeviceId, out SemaphoreSlim fileLock) && fileLock.CurrentCount == 0)
-                await fileLock.WaitAsync();
-            try
+            var cursor = await repositories.DeviceIdsChunks.Collection.FindAsync(DeviceIdsChunkFilter(userId, deviceId, key));
+            var result = new HashSet<ItemKey>();
+            while (await cursor.MoveNextAsync())
             {
-                var unsyncedIds = await GetUnsyncedIdsAsync();
-                if (IsSyncPending())
+                foreach (var chunk in cursor.Current)
                 {
-                    unsyncedIds = unsyncedIds.Union(await File.ReadAllLinesAsync(device.PendingIdsFilePath)).ToArray();
+                    foreach (var id in chunk.Ids)
+                    {
+                        var parts = id.Split(':', 2);
+                        result.Add(new ItemKey(parts[0], parts[1]));
+                    }
                 }
-
-                if (unsyncedIds.Length == 0) return [];
-
-                File.Delete(device.UnsyncedIdsFilePath);
-                await File.WriteAllLinesAsync(device.PendingIdsFilePath, unsyncedIds);
-
-                return unsyncedIds;
             }
-            catch
+            return result;
+        }
+
+        const int MaxIdsPerChunk = 400_000;
+        public async Task AppendIdsAsync(string userId, string deviceId, string key, IEnumerable<ItemKey> ids)
+        {
+            var filter = DeviceIdsChunkFilter(userId, deviceId, key) & Builders<DeviceIdsChunk>.Filter.Where(x => x.Ids.Length < MaxIdsPerChunk);
+            var chunk = await repositories.DeviceIdsChunks.Collection.Find(filter).FirstOrDefaultAsync();
+
+            if (chunk != null)
             {
-                return Array.Empty<string>();
+                var update = Builders<DeviceIdsChunk>.Update.PushEach(x => x.Ids, ids.Select(i => i.ToString()));
+                await repositories.DeviceIdsChunks.Collection.UpdateOneAsync(
+                    Builders<DeviceIdsChunk>.Filter.Eq(x => x.Id, chunk.Id),
+                    update
+                );
             }
-            finally
+            else
             {
-                if (fileLock != null && fileLock.CurrentCount == 0) fileLock.Release();
-            }
-        }
-
-
-        public async Task WritePendingIdsAsync(IEnumerable<string> ids)
-        {
-            await File.WriteAllLinesAsync(device.PendingIdsFilePath, ids);
-        }
-
-        public bool IsSyncReset()
-        {
-            return File.Exists(device.ResetSyncFilePath);
-        }
-        public bool IsSyncReset(string deviceId)
-        {
-            return File.Exists(Path.Join(device.UserSyncDirectoryPath, deviceId, "reset-sync"));
-        }
-
-        public bool IsSyncPending()
-        {
-            return File.Exists(device.PendingIdsFilePath);
-        }
-
-        public bool IsUnsynced()
-        {
-            return File.Exists(device.UnsyncedIdsFilePath);
-        }
-
-        public void Reset()
-        {
-            File.Delete(device.ResetSyncFilePath);
-            File.Delete(device.PendingIdsFilePath);
-        }
-
-        public bool IsDeviceRegistered()
-        {
-            return Directory.Exists(device.UserDeviceDirectoryPath);
-        }
-        public bool IsDeviceRegistered(string deviceId)
-        {
-            return Directory.Exists(Path.Join(device.UserSyncDirectoryPath, deviceId));
-        }
-
-        public string[] ListDevices()
-        {
-            return Directory.GetDirectories(device.UserSyncDirectoryPath).Select((path) => path[(path.LastIndexOf(Path.DirectorySeparatorChar) + 1)..]).ToArray();
-        }
-
-        public void ResetDevices()
-        {
-            if (File.Exists(device.UserSyncDirectoryPath)) File.Delete(device.UserSyncDirectoryPath);
-            Directory.CreateDirectory(device.UserSyncDirectoryPath);
-        }
-
-        private readonly ConcurrentDictionary<string, SemaphoreSlim> UnsyncedIdsFileLocks = [];
-        public async Task AddIdsToOtherDevicesAsync(List<string> ids)
-        {
-            await Parallel.ForEachAsync(ListDevices(), async (id, ct) =>
-            {
-                if (id == device.DeviceId || IsSyncReset(id)) return;
-                if (!UnsyncedIdsFileLocks.TryGetValue(id, out SemaphoreSlim fileLock))
+                var newChunk = new DeviceIdsChunk
                 {
-                    fileLock = UnsyncedIdsFileLocks.AddOrUpdate(id, (id) => new SemaphoreSlim(1, 1), (id, old) => new SemaphoreSlim(1, 1));
-                }
-
-                await fileLock.WaitAsync(ct);
-                try
-                {
-                    if (!IsDeviceRegistered(id)) Directory.CreateDirectory(Path.Join(device.UserSyncDirectoryPath, id));
-
-                    var oldIds = await GetUnsyncedIdsAsync(id);
-                    await File.WriteAllLinesAsync(Path.Join(device.UserSyncDirectoryPath, id, "unsynced"), ids.Union(oldIds), ct);
-                }
-                finally
-                {
-                    fileLock.Release();
-                }
-            });
-        }
-
-        public void RegisterDevice()
-        {
-            Directory.CreateDirectory(device.UserDeviceDirectoryPath);
-            File.Create(device.ResetSyncFilePath).Close();
-        }
-
-        public void UnregisterDevice()
-        {
-            try
-            {
-                Directory.Delete(device.UserDeviceDirectoryPath, true);
+                    UserId = userId,
+                    DeviceId = deviceId,
+                    Key = key,
+                    Ids = [.. ids.Select(i => i.ToString())]
+                };
+                await repositories.DeviceIdsChunks.Collection.InsertOneAsync(newChunk);
             }
-            catch { }
+
+            var emptyChunksFilter = DeviceIdsChunkFilter(userId, deviceId, key) & Builders<DeviceIdsChunk>.Filter.Size(x => x.Ids, 0);
+            await repositories.DeviceIdsChunks.Collection.DeleteManyAsync(emptyChunksFilter);
+        }
+
+        public async Task WriteIdsAsync(string userId, string deviceId, string key, IEnumerable<ItemKey> ids)
+        {
+            var writes = new List<WriteModel<DeviceIdsChunk>>
+            {
+                new DeleteManyModel<DeviceIdsChunk>(DeviceIdsChunkFilter(userId, deviceId, key))
+            };
+            var chunks = ids.Chunk(MaxIdsPerChunk);
+            foreach (var chunk in chunks)
+            {
+                var newChunk = new DeviceIdsChunk
+                {
+                    UserId = userId,
+                    DeviceId = deviceId,
+                    Key = key,
+                    Ids = [.. chunk.Select(i => i.ToString())]
+                };
+                writes.Add(new InsertOneModel<DeviceIdsChunk>(newChunk));
+            }
+            await repositories.DeviceIdsChunks.Collection.BulkWriteAsync(writes);
+        }
+
+        public async Task<HashSet<ItemKey>> FetchUnsyncedIdsAsync(string userId, string deviceId)
+        {
+            var device = await GetDeviceAsync(userId, deviceId);
+            if (device == null || device.IsSyncReset) return [];
+
+            var unsyncedIds = await GetIdsAsync(userId, deviceId, "unsynced");
+            var pendingIds = await GetIdsAsync(userId, deviceId, "pending");
+
+            unsyncedIds = [.. unsyncedIds, .. pendingIds];
+
+            if (unsyncedIds.Count == 0) return [];
+
+            await repositories.DeviceIdsChunks.Collection.DeleteManyAsync(DeviceIdsChunkFilter(userId, deviceId, "unsynced"));
+            await WriteIdsAsync(userId, deviceId, "pending", unsyncedIds);
+
+            return unsyncedIds;
+        }
+
+        public async Task WritePendingIdsAsync(string userId, string deviceId, HashSet<ItemKey> ids)
+        {
+            await WriteIdsAsync(userId, deviceId, "pending", ids);
+        }
+
+        public async Task ResetAsync(string userId, string deviceId)
+        {
+            await repositories.SyncDevices.Collection.UpdateOneAsync(DeviceFilter(userId, deviceId), Builders<SyncDevice>.Update
+                .Set(x => x.IsSyncReset, false));
+            await repositories.DeviceIdsChunks.Collection.DeleteManyAsync(DeviceIdsChunkFilter(userId, deviceId, "pending"));
+        }
+
+        public async Task<SyncDevice?> GetDeviceAsync(string userId, string deviceId)
+        {
+            return await repositories.SyncDevices.Collection.Find(DeviceFilter(userId, deviceId)).FirstOrDefaultAsync();
+        }
+
+        public async IAsyncEnumerable<SyncDevice> ListDevicesAsync(string userId)
+        {
+            using var cursor = await repositories.SyncDevices.Collection.FindAsync(UserFilter(userId));
+            while (await cursor.MoveNextAsync())
+            {
+                foreach (var device in cursor.Current)
+                {
+                    yield return device;
+                }
+            }
+        }
+
+        public async Task ResetDevicesAsync(string userId)
+        {
+            await repositories.SyncDevices.Collection.DeleteManyAsync(UserFilter(userId));
+            await repositories.DeviceIdsChunks.Collection.DeleteManyAsync(DeviceIdsChunkFilter(userId));
+        }
+
+        public async Task UpdateLastAccessTimeAsync(string userId, string deviceId)
+        {
+            await repositories.SyncDevices.Collection.UpdateOneAsync(DeviceFilter(userId, deviceId), Builders<SyncDevice>.Update
+                .Set(x => x.LastAccessTime, DateTimeOffset.UtcNow.ToUnixTimeMilliseconds()));
+        }
+
+        public async Task AddIdsToOtherDevicesAsync(string userId, string deviceId, IEnumerable<ItemKey> ids)
+        {
+            await UpdateLastAccessTimeAsync(userId, deviceId);
+            await foreach (var device in ListDevicesAsync(userId))
+            {
+                if (device.DeviceId == deviceId || device.IsSyncReset) continue;
+                await AppendIdsAsync(userId, device.DeviceId, "unsynced", ids);
+            }
+        }
+
+        public async Task AddIdsToAllDevicesAsync(string userId, IEnumerable<ItemKey> ids)
+        {
+            await foreach (var device in ListDevicesAsync(userId))
+            {
+                if (device.IsSyncReset) continue;
+                await AppendIdsAsync(userId, device.DeviceId, "unsynced", ids);
+            }
+        }
+
+        public async Task<SyncDevice> RegisterDeviceAsync(string userId, string deviceId)
+        {
+            var newDevice = new SyncDevice
+            {
+                UserId = userId,
+                DeviceId = deviceId,
+                LastAccessTime = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
+                IsSyncReset = true
+            };
+            await repositories.SyncDevices.Collection.InsertOneAsync(newDevice);
+            return newDevice;
+        }
+
+        public async Task UnregisterDeviceAsync(string userId, string deviceId)
+        {
+            await repositories.SyncDevices.Collection.DeleteOneAsync(DeviceFilter(userId, deviceId));
+            await repositories.DeviceIdsChunks.Collection.DeleteManyAsync(DeviceIdsChunkFilter(userId, deviceId));
         }
     }
 }

Notesnook.API/Services/UserService.cs

@@ -18,53 +18,44 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 using System;
-using System.IO;
 using System.Net.Http;
-using System.Text;
 using System.Text.Json;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Logging;
+using MongoDB.Driver;
+using Notesnook.API.Helpers;
 using Notesnook.API.Interfaces;
 using Notesnook.API.Models;
 using Notesnook.API.Models.Responses;
 using Streetwriters.Common;
+using Streetwriters.Common.Accessors;
 using Streetwriters.Common.Enums;
 using Streetwriters.Common.Extensions;
-using Streetwriters.Common.Interfaces;
 using Streetwriters.Common.Messages;
 using Streetwriters.Common.Models;
 using Streetwriters.Data.Interfaces;
 
 namespace Notesnook.API.Services
 {
-    public class UserService : IUserService
+    public class UserService(IHttpContextAccessor accessor,
+        ISyncItemsRepositoryAccessor syncItemsRepositoryAccessor,
+        IUnitOfWork unitOfWork, IS3Service s3Service, SyncDeviceService syncDeviceService, WampServiceAccessor serviceAccessor, ILogger<UserService> logger) : IUserService
     {
         private static readonly System.Security.Cryptography.RandomNumberGenerator Rng = System.Security.Cryptography.RandomNumberGenerator.Create();
-        private readonly HttpClient httpClient;
-        private IHttpContextAccessor HttpContextAccessor { get; }
-        private ISyncItemsRepositoryAccessor Repositories { get; }
-        private IS3Service S3Service { get; set; }
-        private readonly IUnitOfWork unit;
-
-        public UserService(IHttpContextAccessor accessor,
-        ISyncItemsRepositoryAccessor syncItemsRepositoryAccessor,
-        IUnitOfWork unitOfWork, IS3Service s3Service)
-        {
-            httpClient = new HttpClient();
-
-            Repositories = syncItemsRepositoryAccessor;
-            HttpContextAccessor = accessor;
-            unit = unitOfWork;
-            S3Service = s3Service;
-        }
+        private readonly HttpClient httpClient = new();
+        private IHttpContextAccessor HttpContextAccessor { get; } = accessor;
+        private ISyncItemsRepositoryAccessor Repositories { get; } = syncItemsRepositoryAccessor;
+        private IS3Service S3Service { get; set; } = s3Service;
+        private readonly IUnitOfWork unit = unitOfWork;
 
         public async Task CreateUserAsync()
         {
             SignupResponse response = await httpClient.ForwardAsync<SignupResponse>(this.HttpContextAccessor, $"{Servers.IdentityServer}/signup", HttpMethod.Post);
-            if (!response.Success || (response.Errors != null && response.Errors.Length > 0))
+            if (!response.Success || (response.Errors != null && response.Errors.Length > 0) || response.UserId == null)
             {
-                await Slogger<UserService>.Error(nameof(CreateUserAsync), "Couldn't sign up.", JsonSerializer.Serialize(response));
+                logger.LogError("Failed to sign up user: {Response}", JsonSerializer.Serialize(response));
                 if (response.Errors != null && response.Errors.Length > 0)
                     throw new Exception(string.Join(" ", response.Errors));
                 else throw new Exception("Could not create a new account. Error code: " + response.StatusCode);
@@ -73,39 +64,41 @@ namespace Notesnook.API.Services
             await Repositories.UsersSettings.InsertAsync(new UserSettings
             {
                 UserId = response.UserId,
+                StorageLimit = new Limit { UpdatedAt = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(), Value = 0 },
                 LastSynced = 0,
                 Salt = GetSalt()
             });
 
             if (!Constants.IS_SELF_HOSTED)
             {
-                await WampServers.SubscriptionServer.PublishMessageAsync(SubscriptionServerTopics.CreateSubscriptionTopic, new CreateSubscriptionMessage
+                await WampServers.SubscriptionServer.PublishMessageAsync(SubscriptionServerTopics.CreateSubscriptionV2Topic, new CreateSubscriptionMessageV2
                 {
                     AppId = ApplicationType.NOTESNOOK,
                     Provider = SubscriptionProvider.STREETWRITERS,
-                    Type = SubscriptionType.BASIC,
+                    Status = SubscriptionStatus.ACTIVE,
+                    Plan = SubscriptionPlan.FREE,
                     UserId = response.UserId,
                     StartTime = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
+                    Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
                 });
             }
 
-            await Slogger<UserService>.Info(nameof(CreateUserAsync), "New user created.", JsonSerializer.Serialize(response));
+            logger.LogInformation("New user created: {Response}", JsonSerializer.Serialize(response));
         }
 
         public async Task<UserResponse> GetUserAsync(string userId)
         {
-            var userService = await WampServers.IdentityServer.GetServiceAsync<IUserAccountService>(IdentityServerTopics.UserAccountServiceTopic);
+            var user = await serviceAccessor.UserAccountService.GetUserAsync(Clients.Notesnook.Id, userId) ?? throw new Exception("User not found.");
 
-            var user = await userService.GetUserAsync(Clients.Notesnook.Id, userId) ?? throw new Exception("User not found.");
-
-            ISubscription subscription = null;
+            Subscription? subscription = null;
             if (Constants.IS_SELF_HOSTED)
             {
                 subscription = new Subscription
                 {
                     AppId = ApplicationType.NOTESNOOK,
                     Provider = SubscriptionProvider.STREETWRITERS,
-                    Type = SubscriptionType.PREMIUM,
+                    Plan = SubscriptionPlan.BELIEVER,
+                    Status = SubscriptionStatus.ACTIVE,
                     UserId = user.UserId,
                     StartDate = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
                     // this date doesn't matter as the subscription is static.
@@ -114,11 +107,22 @@ namespace Notesnook.API.Services
             }
             else
             {
-                var subscriptionService = await WampServers.SubscriptionServer.GetServiceAsync<IUserSubscriptionService>(SubscriptionServerTopics.UserSubscriptionServiceTopic);
-                subscription = await subscriptionService.GetUserSubscriptionAsync(Clients.Notesnook.Id, userId);
+                subscription = await serviceAccessor.UserSubscriptionService.GetUserSubscriptionAsync(Clients.Notesnook.Id, userId) ?? throw new Exception("User subscription not found.");
             }
 
             var userSettings = await Repositories.UsersSettings.FindOneAsync((u) => u.UserId == user.UserId) ?? throw new Exception("User settings not found.");
+
+            // reset user's attachment limit every month
+            var limit = StorageHelper.RolloverStorageLimit(userSettings.StorageLimit);
+            if (userSettings.StorageLimit == null || limit.UpdatedAt != userSettings.StorageLimit?.UpdatedAt)
+            {
+                userSettings.StorageLimit = limit;
+                await Repositories.UsersSettings.Collection.UpdateOneAsync(
+                    Builders<UserSettings>.Filter.Eq(u => u.UserId, user.UserId),
+                    Builders<UserSettings>.Update.Set(u => u.StorageLimit, userSettings.StorageLimit)
+                );
+            }
+
             return new UserResponse
             {
                 UserId = user.UserId,
@@ -128,24 +132,56 @@ namespace Notesnook.API.Services
                 MFA = user.MFA,
                 PhoneNumber = user.PhoneNumber,
                 AttachmentsKey = userSettings.AttachmentsKey,
+                MonographPasswordsKey = userSettings.MonographPasswordsKey,
+                InboxKeys = userSettings.InboxKeys,
                 Salt = userSettings.Salt,
                 Subscription = subscription,
+                StorageUsed = userSettings.StorageLimit.Value,
+                TotalStorage = StorageHelper.GetStorageLimitForPlan(subscription),
                 Success = true,
                 StatusCode = 200
             };
         }
 
-        public async Task SetUserAttachmentsKeyAsync(string userId, IEncrypted key)
+        public async Task SetUserKeysAsync(string userId, UserKeys keys)
         {
             var userSettings = await Repositories.UsersSettings.FindOneAsync((u) => u.UserId == userId) ?? throw new Exception("User not found.");
-            userSettings.AttachmentsKey = (EncryptedData)key;
+
+            if (keys.AttachmentsKey != null)
+            {
+                userSettings.AttachmentsKey = keys.AttachmentsKey;
+            }
+            if (keys.MonographPasswordsKey != null)
+            {
+                userSettings.MonographPasswordsKey = keys.MonographPasswordsKey;
+            }
+            if (keys.InboxKeys != null)
+            {
+                if (keys.InboxKeys.Public == null || keys.InboxKeys.Private == null)
+                {
+                    userSettings.InboxKeys = null;
+                    await Repositories.InboxApiKey.DeleteManyAsync(t => t.UserId == userId);
+                }
+                else
+                {
+                    userSettings.InboxKeys = keys.InboxKeys;
+                    var defaultInboxKey = new InboxApiKey
+                    {
+                        UserId = userId,
+                        Name = "Default",
+                        DateCreated = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
+                        ExpiryDate = DateTimeOffset.UtcNow.AddYears(1).ToUnixTimeMilliseconds(),
+                        LastUsedAt = 0
+                    };
+                    await Repositories.InboxApiKey.InsertAsync(defaultInboxKey);
+                }
+            }
+
             await Repositories.UsersSettings.UpdateAsync(userSettings.Id, userSettings);
         }
 
         public async Task DeleteUserAsync(string userId)
         {
-            new SyncDeviceService(new SyncDevice(ref userId, ref userId)).ResetDevices();
-
             var cc = new CancellationTokenSource();
 
             Repositories.Notes.DeleteByUserId(userId);
@@ -162,11 +198,14 @@ namespace Notesnook.API.Services
             Repositories.Vaults.DeleteByUserId(userId);
             Repositories.UsersSettings.Delete((u) => u.UserId == userId);
             Repositories.Monographs.DeleteMany((m) => m.UserId == userId);
+            Repositories.InboxApiKey.DeleteMany((t) => t.UserId == userId);
 
             var result = await unit.Commit();
-            await Slogger<UserService>.Info(nameof(DeleteUserAsync), "User data deleted", userId, result.ToString());
+            logger.LogInformation("User data deleted for user {UserId}: {Result}", userId, result);
             if (!result) throw new Exception("Could not delete user data.");
 
+            await syncDeviceService.ResetDevicesAsync(userId);
+
             if (!Constants.IS_SELF_HOSTED)
             {
                 await WampServers.SubscriptionServer.PublishMessageAsync(SubscriptionServerTopics.DeleteSubscriptionTopic, new DeleteSubscriptionMessage
@@ -179,18 +218,17 @@ namespace Notesnook.API.Services
             await S3Service.DeleteDirectoryAsync(userId);
         }
 
-        public async Task DeleteUserAsync(string userId, string jti, string password)
+        public async Task DeleteUserAsync(string userId, string? jti, string password)
         {
-            await Slogger<UserService>.Info(nameof(DeleteUserAsync), "Deleting user account", userId);
+            logger.LogInformation("Deleting user account: {UserId}", userId);
 
-            var userService = await WampServers.IdentityServer.GetServiceAsync<IUserAccountService>(IdentityServerTopics.UserAccountServiceTopic);
-            await userService.DeleteUserAsync(Clients.Notesnook.Id, userId, password);
+            await serviceAccessor.UserAccountService.DeleteUserAsync(Clients.Notesnook.Id, userId, password);
 
             await DeleteUserAsync(userId);
 
             await WampServers.MessengerServer.PublishMessageAsync(MessengerServerTopics.SendSSETopic, new SendSSEMessage
             {
-                SendToAll = false,
+                SendToAll = jti == null,
                 OriginTokenId = jti,
                 UserId = userId,
                 Message = new Message
@@ -204,7 +242,6 @@ namespace Notesnook.API.Services
 
         public async Task<bool> ResetUserAsync(string userId, bool removeAttachments)
         {
-            new SyncDeviceService(new SyncDevice(ref userId, ref userId)).ResetDevices();
 
             var cc = new CancellationTokenSource();
 
@@ -221,12 +258,17 @@ namespace Notesnook.API.Services
             Repositories.Tags.DeleteByUserId(userId);
             Repositories.Vaults.DeleteByUserId(userId);
             Repositories.Monographs.DeleteMany((m) => m.UserId == userId);
+            Repositories.InboxApiKey.DeleteMany((t) => t.UserId == userId);
             if (!await unit.Commit()) return false;
 
+            await syncDeviceService.ResetDevicesAsync(userId);
+
             var userSettings = await Repositories.UsersSettings.FindOneAsync((s) => s.UserId == userId);
 
             userSettings.AttachmentsKey = null;
+            userSettings.MonographPasswordsKey = null;
             userSettings.VaultKey = null;
+            userSettings.InboxKeys = null;
             userSettings.LastSynced = 0;
 
             await Repositories.UsersSettings.UpsertAsync(userSettings, (s) => s.UserId == userId);

Notesnook.API/Startup.cs

@@ -24,6 +24,7 @@ using System.Security.Claims;
 using System.Text;
 using System.Text.Encodings.Web;
 using System.Threading.Tasks;
+using Amazon.Runtime;
 using IdentityModel.AspNetCore.OAuth2Introspection;
 using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
@@ -39,6 +40,7 @@ using Microsoft.Extensions.Caching.Memory;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
+using Microsoft.Extensions.Diagnostics.HealthChecks;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
@@ -48,15 +50,19 @@ using Notesnook.API.Authorization;
 using Notesnook.API.Extensions;
 using Notesnook.API.Hubs;
 using Notesnook.API.Interfaces;
+using Notesnook.API.Jobs;
 using Notesnook.API.Models;
 using Notesnook.API.Repositories;
 using Notesnook.API.Services;
 using OpenTelemetry.Metrics;
 using OpenTelemetry.Resources;
+using Quartz;
 using Streetwriters.Common;
 using Streetwriters.Common.Extensions;
+using Streetwriters.Common.Interfaces;
 using Streetwriters.Common.Messages;
 using Streetwriters.Common.Models;
+using Streetwriters.Common.Services;
 using Streetwriters.Data;
 using Streetwriters.Data.DbContexts;
 using Streetwriters.Data.Interfaces;
@@ -108,16 +114,15 @@ namespace Notesnook.API
                     policy.RequireAuthenticatedUser();
                     policy.Requirements.Add(new SyncRequirement());
                 });
-                options.AddPolicy("Pro", policy =>
+
+                options.AddPolicy(InboxApiKeyAuthenticationDefaults.AuthenticationScheme, policy =>
                 {
-                    policy.AuthenticationSchemes.Add("introspection");
+                    policy.AuthenticationSchemes.Add(InboxApiKeyAuthenticationDefaults.AuthenticationScheme);
                     policy.RequireAuthenticatedUser();
-                    policy.Requirements.Add(new SyncRequirement());
-                    policy.Requirements.Add(new ProUserRequirement());
                 });
 
-                options.DefaultPolicy = options.GetPolicy("Notesnook");
-            }).AddSingleton<IAuthorizationMiddlewareResultHandler, AuthorizationResultTransformer>(); ;
+                options.DefaultPolicy = options.GetPolicy("Notesnook") ?? throw new Exception("Notesnook policy not found");
+            }).AddSingleton<IAuthorizationMiddlewareResultHandler, AuthorizationResultTransformer>();
 
             services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
             .AddOAuth2Introspection("introspection", options =>
@@ -135,22 +140,26 @@ namespace Notesnook.API
 
                 options.Events.OnTokenValidated = (context) =>
                 {
-                    if (long.TryParse(context.Principal.FindFirst("exp")?.Value, out long expiryTime))
+                    if (long.TryParse(context.Principal?.FindFirst("exp")?.Value, out long expiryTime))
                     {
                         context.Properties.ExpiresUtc = DateTimeOffset.FromUnixTimeSeconds(expiryTime);
                     }
                     context.Properties.AllowRefresh = true;
                     context.Properties.IsPersistent = true;
-                    context.HttpContext.User = context.Principal;
+                    context.HttpContext.User = context.Principal ?? throw new Exception("No principal found in token.");
                     return Task.CompletedTask;
                 };
                 options.CacheKeyGenerator = (options, token) => (token + ":" + "reference_token").Sha256();
                 options.SaveToken = true;
                 options.EnableCaching = true;
                 options.CacheDuration = TimeSpan.FromMinutes(30);
-            });
+            })
+            .AddScheme<InboxApiKeyAuthenticationSchemeOptions, InboxApiKeyAuthenticationHandler>(
+                InboxApiKeyAuthenticationDefaults.AuthenticationScheme,
+                options => { }
+            );
 
-            BsonSerializer.RegisterSerializer(new SyncItemBsonSerializer());
+            // Serializer.RegisterSerializer(new SyncItemBsonSerializer());
             if (!BsonClassMap.IsClassMapRegistered(typeof(UserSettings)))
                 BsonClassMap.RegisterClassMap<UserSettings>();
 
@@ -160,12 +169,19 @@ namespace Notesnook.API
             if (!BsonClassMap.IsClassMapRegistered(typeof(CallToAction)))
                 BsonClassMap.RegisterClassMap<CallToAction>();
 
+            if (!BsonClassMap.IsClassMapRegistered(typeof(SyncDevice)))
+                BsonClassMap.RegisterClassMap<SyncDevice>();
+
             services.AddScoped<IDbContext, MongoDbContext>();
             services.AddScoped<IUnitOfWork, UnitOfWork>();
 
             services.AddRepository<UserSettings>("user_settings", "notesnook")
                     .AddRepository<Monograph>("monographs", "notesnook")
-                    .AddRepository<Announcement>("announcements", "notesnook");
+                    .AddRepository<Announcement>("announcements", "notesnook")
+                    .AddRepository<DeviceIdsChunk>(Collections.DeviceIdsChunksKey, "notesnook")
+                    .AddRepository<SyncDevice>(Collections.SyncDevicesKey, "notesnook")
+                    .AddRepository<InboxApiKey>(Collections.InboxApiKeysKey, "notesnook")
+                    .AddRepository<InboxSyncItem>(Collections.InboxItemsKey, "notesnook");
 
             services.AddMongoCollection(Collections.SettingsKey)
                     .AddMongoCollection(Collections.AttachmentsKey)
@@ -178,15 +194,22 @@ namespace Notesnook.API
                     .AddMongoCollection(Collections.ShortcutsKey)
                     .AddMongoCollection(Collections.TagsKey)
                     .AddMongoCollection(Collections.ColorsKey)
-                    .AddMongoCollection(Collections.VaultsKey);
+                    .AddMongoCollection(Collections.VaultsKey)
+                    .AddMongoCollection(Collections.InboxItemsKey)
+                    .AddMongoCollection(Collections.InboxApiKeysKey);
 
             services.AddScoped<ISyncItemsRepositoryAccessor, SyncItemsRepositoryAccessor>();
+            services.AddScoped<SyncDeviceService>();
             services.AddScoped<IUserService, UserService>();
             services.AddScoped<IS3Service, S3Service>();
+            services.AddScoped<IURLAnalyzer, URLAnalyzer>();
+
+            services.AddWampServiceAccessor(Servers.NotesnookAPI);
 
             services.AddControllers();
 
-            services.AddHealthChecks(); // .AddMongoDb(dbSettings.ConnectionString, dbSettings.DatabaseName, "database-check");
+            services.AddHealthChecks();
+
             services.AddSignalR((hub) =>
             {
                 hub.MaximumReceiveMessageSize = 100 * 1024 * 1024;
@@ -216,24 +239,36 @@ namespace Notesnook.API
                     .WithMetrics((builder) => builder
                             .AddMeter("Notesnook.API.Metrics.Sync")
                             .AddPrometheusExporter());
+
+            services.AddQuartzHostedService(q =>
+            {
+                q.WaitForJobsToComplete = false;
+                q.AwaitApplicationStarted = true;
+                q.StartDelay = TimeSpan.FromMinutes(1);
+            }).AddQuartz(q =>
+            {
+                q.UseMicrosoftDependencyInjectionJobFactory();
+
+                var jobKey = new JobKey("DeviceCleanupJob");
+                q.AddJob<DeviceCleanupJob>(opts => opts.WithIdentity(jobKey));
+                q.AddTrigger(opts => opts
+                    .ForJob(jobKey)
+                    .WithIdentity("DeviceCleanup-trigger")
+                    // first of every month
+                    .WithCronSchedule("0 0 0 1 * ? *"));
+            });
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
         {
-            if (!env.IsDevelopment())
-            {
-                app.UseForwardedHeaders(new ForwardedHeadersOptions
-                {
-                    ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto
-                });
-            }
+            app.UseForwardedHeadersWithKnownProxies(env);
 
             app.UseOpenTelemetryPrometheusScrapingEndpoint((context) => context.Request.Path == "/metrics" && context.Connection.LocalPort == 5067);
             app.UseResponseCompression();
 
             app.UseCors("notesnook");
-            app.UseVersion();
+            app.UseVersion(Servers.NotesnookAPI);
 
             app.UseWamp(WampServers.NotesnookServer, (realm, server) =>
             {
@@ -257,14 +292,8 @@ namespace Notesnook.API
 
             app.UseEndpoints(endpoints =>
             {
-                endpoints.MapPrometheusScrapingEndpoint();
                 endpoints.MapControllers();
                 endpoints.MapHealthChecks("/health");
-                endpoints.MapHub<SyncHub>("/hubs/sync", options =>
-                {
-                    options.CloseOnAuthenticationExpiration = false;
-                    options.Transports = HttpTransportType.WebSockets;
-                });
                 endpoints.MapHub<SyncV2Hub>("/hubs/sync/v2", options =>
                 {
                     options.CloseOnAuthenticationExpiration = false;
@@ -278,7 +307,7 @@ namespace Notesnook.API
     {
         public static IServiceCollection AddMongoCollection(this IServiceCollection services, string collectionName, string database = "notesnook")
         {
-            services.AddKeyedSingleton(collectionName, (provider, key) => MongoDbContext.GetMongoCollection<SyncItem>(provider.GetService<MongoDB.Driver.IMongoClient>(), database, collectionName));
+            services.AddKeyedSingleton(collectionName, (provider, key) => MongoDbContext.GetMongoCollection<SyncItem>(provider.GetRequiredService<MongoDB.Driver.IMongoClient>(), database, collectionName));
             return services;
         }
     }

Notesnook.API/appsettings.Development.json

@@ -1,15 +1,15 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft": "Warning",
-      "Microsoft.Hosting.Lifetime": "Information",
-      "Microsoft.AspNetCore.SignalR": "Trace",
-      "Microsoft.AspNetCore.Http.Connections": "Trace"
-    }
-  },
-  "MongoDbSettings": {
-    "ConnectionString": "mongodb://localhost:27017/notesnook",
-    "DatabaseName": "notesnook"
-  }
-}
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Debug",
+      "Microsoft": "Warning",
+      "Microsoft.Hosting.Lifetime": "Information",
+      "Microsoft.AspNetCore.SignalR": "Trace",
+      "Microsoft.AspNetCore.Http.Connections": "Trace"
+    }
+  },
+  "MongoDbSettings": {
+    "ConnectionString": "mongodb://localhost:27017/notesnook",
+    "DatabaseName": "notesnook"
+  }
+}

Notesnook.API/appsettings.json

@@ -1,7 +1,7 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Warning"
-    }
-  }
-}
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Warning"
+    }
+  }
+}

Notesnook.Inbox.API/.env.example

@@ -0,0 +1,2 @@
+PORT=5181
+NOTESNOOK_API_SERVER_URL=http://localhost:5264/

Notesnook.Inbox.API/.gitignore

@@ -0,0 +1,3 @@
+node_modules/
+dist/
+.env

Notesnook.Inbox.API/Dockerfile

@@ -0,0 +1,19 @@
+FROM oven/bun:1.2.21-slim
+
+RUN mkdir -p /home/bun/app && chown -R bun:bun /home/bun/app
+
+WORKDIR /home/bun/app
+
+USER bun
+
+COPY --chown=bun:bun package.json bun.lock .
+
+RUN bun install --frozen-lockfile
+
+COPY --chown=bun:bun . .
+
+RUN bun run build
+
+EXPOSE 5181
+
+CMD ["bun", "run", "start"]

Notesnook.Inbox.API/bun.lock

@@ -0,0 +1,197 @@
+{
+  "lockfileVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "notesnook-inbox-api",
+      "dependencies": {
+        "express": "^5.1.0",
+        "express-rate-limit": "^8.1.0",
+        "libsodium-wrappers-sumo": "^0.7.15",
+        "zod": "^4.1.9",
+      },
+      "devDependencies": {
+        "@types/express": "^5.0.3",
+        "@types/libsodium-wrappers-sumo": "^0.7.8",
+        "@types/node": "^24.5.2",
+        "typescript": "^5.9.2",
+      },
+    },
+  },
+  "packages": {
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+
+    "@types/connect": ["@types/connect@3.4.38", "", { "dependencies": { "@types/node": "*" } }, "sha512-K6uROf1LD88uDQqJCktA4yzL1YYAK6NgfsI0v/mTgyPKWsX1CnJ0XPSDhViejru1GcRkLWb8RlzFYJRqGUbaug=="],
+
+    "@types/express": ["@types/express@5.0.3", "", { "dependencies": { "@types/body-parser": "*", "@types/express-serve-static-core": "^5.0.0", "@types/serve-static": "*" } }, "sha512-wGA0NX93b19/dZC1J18tKWVIYWyyF2ZjT9vin/NRu0qzzvfVzWjs04iq2rQ3H65vCTQYlRqs3YHfY7zjdV+9Kw=="],
+
+    "@types/express-serve-static-core": ["@types/express-serve-static-core@5.0.7", "", { "dependencies": { "@types/node": "*", "@types/qs": "*", "@types/range-parser": "*", "@types/send": "*" } }, "sha512-R+33OsgWw7rOhD1emjU7dzCDHucJrgJXMA5PYCzJxVil0dsyx5iBEPHqpPfiKNJQb7lZ1vxwoLR4Z87bBUpeGQ=="],
+
+    "@types/http-errors": ["@types/http-errors@2.0.5", "", {}, "sha512-r8Tayk8HJnX0FztbZN7oVqGccWgw98T/0neJphO91KkmOzug1KkofZURD4UaD5uH8AqcFLfdPErnBod0u71/qg=="],
+
+    "@types/libsodium-wrappers": ["@types/libsodium-wrappers@0.7.14", "", {}, "sha512-5Kv68fXuXK0iDuUir1WPGw2R9fOZUlYlSAa0ztMcL0s0BfIDTqg9GXz8K30VJpPP3sxWhbolnQma2x+/TfkzDQ=="],
+
+    "@types/libsodium-wrappers-sumo": ["@types/libsodium-wrappers-sumo@0.7.8", "", { "dependencies": { "@types/libsodium-wrappers": "*" } }, "sha512-N2+df4MB/A+W0RAcTw7A5oxKgzD+Vh6Ye7lfjWIi5SdTzVLfHPzxUjhwPqHLO5Ev9fv/+VHl+sUaUuTg4fUPqw=="],
+
+    "@types/mime": ["@types/mime@1.3.5", "", {}, "sha512-/pyBZWSLD2n0dcHE3hq8s8ZvcETHtEuF+3E7XVt0Ig2nvsVQXdghHVcEkIWjy9A0wKfTn97a/PSDYohKIlnP/w=="],
+
+    "@types/node": ["@types/node@24.5.2", "", { "dependencies": { "undici-types": "~7.12.0" } }, "sha512-FYxk1I7wPv3K2XBaoyH2cTnocQEu8AOZ60hPbsyukMPLv5/5qr7V1i8PLHdl6Zf87I+xZXFvPCXYjiTFq+YSDQ=="],
+
+    "@types/qs": ["@types/qs@6.14.0", "", {}, "sha512-eOunJqu0K1923aExK6y8p6fsihYEn/BYuQ4g0CxAAgFc4b/ZLN4CrsRZ55srTdqoiLzU2B2evC+apEIxprEzkQ=="],
+
+    "@types/range-parser": ["@types/range-parser@1.2.7", "", {}, "sha512-hKormJbkJqzQGhziax5PItDUTMAM9uE2XXQmM37dyd4hVM+5aVl7oVxMVUiVQn2oCQFN/LKCZdvSM0pFRqbSmQ=="],
+
+    "@types/send": ["@types/send@0.17.5", "", { "dependencies": { "@types/mime": "^1", "@types/node": "*" } }, "sha512-z6F2D3cOStZvuk2SaP6YrwkNO65iTZcwA2ZkSABegdkAh/lf+Aa/YQndZVfmEXT5vgAp6zv06VQ3ejSVjAny4w=="],
+
+    "@types/serve-static": ["@types/serve-static@1.15.8", "", { "dependencies": { "@types/http-errors": "*", "@types/node": "*", "@types/send": "*" } }, "sha512-roei0UY3LhpOJvjbIP6ZZFngyLKl5dskOtDhxY5THRSpO+ZI+nzJ+m5yUMzGrp89YRa7lvknKkMYjqQFGwA7Sg=="],
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+    "accepts": ["accepts@2.0.0", "", { "dependencies": { "mime-types": "^3.0.0", "negotiator": "^1.0.0" } }, "sha512-5cvg6CtKwfgdmVqY1WIiXKc3Q1bkRqGLi+2W/6ao+6Y7gu/RCwRuAhGEzh5B4KlszSuTLgZYuqFqo5bImjNKng=="],
+
+    "body-parser": ["body-parser@2.2.0", "", { "dependencies": { "bytes": "^3.1.2", "content-type": "^1.0.5", "debug": "^4.4.0", "http-errors": "^2.0.0", "iconv-lite": "^0.6.3", "on-finished": "^2.4.1", "qs": "^6.14.0", "raw-body": "^3.0.0", "type-is": "^2.0.0" } }, "sha512-02qvAaxv8tp7fBa/mw1ga98OGm+eCbqzJOKoRt70sLmfEEi+jyBYVTDGfCL/k06/4EMk/z01gCe7HoCH/f2LTg=="],
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+    "bytes": ["bytes@3.1.2", "", {}, "sha512-/Nf7TyzTx6S3yRJObOAV7956r8cr2+Oj8AC5dt8wSP3BQAoeX58NoHyCU8P8zGkNXStjTSi6fzO6F0pBdcYbEg=="],
+
+    "call-bind-apply-helpers": ["call-bind-apply-helpers@1.0.2", "", { "dependencies": { "es-errors": "^1.3.0", "function-bind": "^1.1.2" } }, "sha512-Sp1ablJ0ivDkSzjcaJdxEunN5/XvksFJ2sMBFfq6x0ryhQV/2b/KwFe21cMpmHtPOSij8K99/wSfoEuTObmuMQ=="],
+
+    "call-bound": ["call-bound@1.0.4", "", { "dependencies": { "call-bind-apply-helpers": "^1.0.2", "get-intrinsic": "^1.3.0" } }, "sha512-+ys997U96po4Kx/ABpBCqhA9EuxJaQWDQg7295H4hBphv3IZg0boBKuwYpt4YXp6MZ5AmZQnU/tyMTlRpaSejg=="],
+
+    "content-disposition": ["content-disposition@1.0.0", "", { "dependencies": { "safe-buffer": "5.2.1" } }, "sha512-Au9nRL8VNUut/XSzbQA38+M78dzP4D+eqg3gfJHMIHHYa3bg067xj1KxMUWj+VULbiZMowKngFFbKczUrNJ1mg=="],
+
+    "content-type": ["content-type@1.0.5", "", {}, "sha512-nTjqfcBFEipKdXCv4YDQWCfmcLZKm81ldF0pAopTvyrFGVbcR6P/VAAd5G7N+0tTr8QqiU0tFadD6FK4NtJwOA=="],
+
+    "cookie": ["cookie@0.7.2", "", {}, "sha512-yki5XnKuf750l50uGTllt6kKILY4nQ1eNIQatoXEByZ5dWgnKqbnqmTrBE5B4N7lrMJKQ2ytWMiTO2o0v6Ew/w=="],
+
+    "cookie-signature": ["cookie-signature@1.2.2", "", {}, "sha512-D76uU73ulSXrD1UXF4KE2TMxVVwhsnCgfAyTg9k8P6KGZjlXKrOLe4dJQKI3Bxi5wjesZoFXJWElNWBjPZMbhg=="],
+
+    "debug": ["debug@4.4.3", "", { "dependencies": { "ms": "^2.1.3" } }, "sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA=="],
+
+    "depd": ["depd@2.0.0", "", {}, "sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw=="],
+
+    "dunder-proto": ["dunder-proto@1.0.1", "", { "dependencies": { "call-bind-apply-helpers": "^1.0.1", "es-errors": "^1.3.0", "gopd": "^1.2.0" } }, "sha512-KIN/nDJBQRcXw0MLVhZE9iQHmG68qAVIBg9CqmUYjmQIhgij9U5MFvrqkUL5FbtyyzZuOeOt0zdeRe4UY7ct+A=="],
+
+    "ee-first": ["ee-first@1.1.1", "", {}, "sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow=="],
+
+    "encodeurl": ["encodeurl@2.0.0", "", {}, "sha512-Q0n9HRi4m6JuGIV1eFlmvJB7ZEVxu93IrMyiMsGC0lrMJMWzRgx6WGquyfQgZVb31vhGgXnfmPNNXmxnOkRBrg=="],
+
+    "es-define-property": ["es-define-property@1.0.1", "", {}, "sha512-e3nRfgfUZ4rNGL232gUgX06QNyyez04KdjFrF+LTRoOXmrOgFKDg4BCdsjW8EnT69eqdYGmRpJwiPVYNrCaW3g=="],
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+    "es-errors": ["es-errors@1.3.0", "", {}, "sha512-Zf5H2Kxt2xjTvbJvP2ZWLEICxA6j+hAmMzIlypy4xcBg1vKVnx89Wy0GbS+kf5cwCVFFzdCFh2XSCFNULS6csw=="],
+
+    "es-object-atoms": ["es-object-atoms@1.1.1", "", { "dependencies": { "es-errors": "^1.3.0" } }, "sha512-FGgH2h8zKNim9ljj7dankFPcICIK9Cp5bm+c2gQSYePhpaG5+esrLODihIorn+Pe6FGJzWhXQotPv73jTaldXA=="],
+
+    "escape-html": ["escape-html@1.0.3", "", {}, "sha512-NiSupZ4OeuGwr68lGIeym/ksIZMJodUGOSCZ/FSnTxcrekbvqrgdUxlJOMpijaKZVjAJrWrGs/6Jy8OMuyj9ow=="],
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+    "etag": ["etag@1.8.1", "", {}, "sha512-aIL5Fx7mawVa300al2BnEE4iNvo1qETxLrPI/o05L7z6go7fCw1J6EQmbK4FmJ2AS7kgVF/KEZWufBfdClMcPg=="],
+
+    "express": ["express@5.1.0", "", { "dependencies": { "accepts": "^2.0.0", "body-parser": "^2.2.0", "content-disposition": "^1.0.0", "content-type": "^1.0.5", "cookie": "^0.7.1", "cookie-signature": "^1.2.1", "debug": "^4.4.0", "encodeurl": "^2.0.0", "escape-html": "^1.0.3", "etag": "^1.8.1", "finalhandler": "^2.1.0", "fresh": "^2.0.0", "http-errors": "^2.0.0", "merge-descriptors": "^2.0.0", "mime-types": "^3.0.0", "on-finished": "^2.4.1", "once": "^1.4.0", "parseurl": "^1.3.3", "proxy-addr": "^2.0.7", "qs": "^6.14.0", "range-parser": "^1.2.1", "router": "^2.2.0", "send": "^1.1.0", "serve-static": "^2.2.0", "statuses": "^2.0.1", "type-is": "^2.0.1", "vary": "^1.1.2" } }, "sha512-DT9ck5YIRU+8GYzzU5kT3eHGA5iL+1Zd0EutOmTE9Dtk+Tvuzd23VBU+ec7HPNSTxXYO55gPV/hq4pSBJDjFpA=="],
+
+    "express-rate-limit": ["express-rate-limit@8.1.0", "", { "dependencies": { "ip-address": "10.0.1" }, "peerDependencies": { "express": ">= 4.11" } }, "sha512-4nLnATuKupnmwqiJc27b4dCFmB/T60ExgmtDD7waf4LdrbJ8CPZzZRHYErDYNhoz+ql8fUdYwM/opf90PoPAQA=="],
+
+    "finalhandler": ["finalhandler@2.1.0", "", { "dependencies": { "debug": "^4.4.0", "encodeurl": "^2.0.0", "escape-html": "^1.0.3", "on-finished": "^2.4.1", "parseurl": "^1.3.3", "statuses": "^2.0.1" } }, "sha512-/t88Ty3d5JWQbWYgaOGCCYfXRwV1+be02WqYYlL6h0lEiUAMPM8o8qKGO01YIkOHzka2up08wvgYD0mDiI+q3Q=="],
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+    "gopd": ["gopd@1.2.0", "", {}, "sha512-ZUKRh6/kUFoAiTAtTYPZJ3hw9wNxx+BIBOijnlG9PnrJsCcSjs1wyyD6vJpaYtgnzDrKYRSqf3OO6Rfa93xsRg=="],
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+    "object-inspect": ["object-inspect@1.13.4", "", {}, "sha512-W67iLl4J2EXEGTbfeHCffrjDfitvLANg0UlX3wFUUSTx92KXRFegMHUVgSqE+wvhAbi4WqjGg9czysTV2Epbew=="],
+
+    "on-finished": ["on-finished@2.4.1", "", { "dependencies": { "ee-first": "1.1.1" } }, "sha512-oVlzkg3ENAhCk2zdv7IJwd/QUD4z2RxRwpkcGY8psCVcCYZNq4wYnVWALHM+brtuJjePWiYF/ClmuDr8Ch5+kg=="],
+
+    "once": ["once@1.4.0", "", { "dependencies": { "wrappy": "1" } }, "sha512-lNaJgI+2Q5URQBkccEKHTQOPaXdUxnZZElQTZY0MFUAuaEqe1E+Nyvgdz/aIyNi6Z9MzO5dv1H8n58/GELp3+w=="],
+
+    "parseurl": ["parseurl@1.3.3", "", {}, "sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ=="],
+
+    "path-to-regexp": ["path-to-regexp@8.3.0", "", {}, "sha512-7jdwVIRtsP8MYpdXSwOS0YdD0Du+qOoF/AEPIt88PcCFrZCzx41oxku1jD88hZBwbNUIEfpqvuhjFaMAqMTWnA=="],
+
+    "proxy-addr": ["proxy-addr@2.0.7", "", { "dependencies": { "forwarded": "0.2.0", "ipaddr.js": "1.9.1" } }, "sha512-llQsMLSUDUPT44jdrU/O37qlnifitDP+ZwrmmZcoSKyLKvtZxpyV0n2/bD/N4tBAAZ/gJEdZU7KMraoK1+XYAg=="],
+
+    "qs": ["qs@6.14.0", "", { "dependencies": { "side-channel": "^1.1.0" } }, "sha512-YWWTjgABSKcvs/nWBi9PycY/JiPJqOD4JA6o9Sej2AtvSGarXxKC3OQSk4pAarbdQlKAh5D4FCQkJNkW+GAn3w=="],
+
+    "range-parser": ["range-parser@1.2.1", "", {}, "sha512-Hrgsx+orqoygnmhFbKaHE6c296J+HTAQXoxEF6gNupROmmGJRoyzfG3ccAveqCBrwr/2yxQ5BVd/GTl5agOwSg=="],
+
+    "raw-body": ["raw-body@3.0.1", "", { "dependencies": { "bytes": "3.1.2", "http-errors": "2.0.0", "iconv-lite": "0.7.0", "unpipe": "1.0.0" } }, "sha512-9G8cA+tuMS75+6G/TzW8OtLzmBDMo8p1JRxN5AZ+LAp8uxGA8V8GZm4GQ4/N5QNQEnLmg6SS7wyuSmbKepiKqA=="],
+
+    "router": ["router@2.2.0", "", { "dependencies": { "debug": "^4.4.0", "depd": "^2.0.0", "is-promise": "^4.0.0", "parseurl": "^1.3.3", "path-to-regexp": "^8.0.0" } }, "sha512-nLTrUKm2UyiL7rlhapu/Zl45FwNgkZGaCpZbIHajDYgwlJCOzLSk+cIPAnsEqV955GjILJnKbdQC1nVPz+gAYQ=="],
+
+    "safe-buffer": ["safe-buffer@5.2.1", "", {}, "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ=="],
+
+    "safer-buffer": ["safer-buffer@2.1.2", "", {}, "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="],
+
+    "send": ["send@1.2.0", "", { "dependencies": { "debug": "^4.3.5", "encodeurl": "^2.0.0", "escape-html": "^1.0.3", "etag": "^1.8.1", "fresh": "^2.0.0", "http-errors": "^2.0.0", "mime-types": "^3.0.1", "ms": "^2.1.3", "on-finished": "^2.4.1", "range-parser": "^1.2.1", "statuses": "^2.0.1" } }, "sha512-uaW0WwXKpL9blXE2o0bRhoL2EGXIrZxQ2ZQ4mgcfoBxdFmQold+qWsD2jLrfZ0trjKL6vOw0j//eAwcALFjKSw=="],
+
+    "serve-static": ["serve-static@2.2.0", "", { "dependencies": { "encodeurl": "^2.0.0", "escape-html": "^1.0.3", "parseurl": "^1.3.3", "send": "^1.2.0" } }, "sha512-61g9pCh0Vnh7IutZjtLGGpTA355+OPn2TyDv/6ivP2h/AdAVX9azsoxmg2/M6nZeQZNYBEwIcsne1mJd9oQItQ=="],
+
+    "setprototypeof": ["setprototypeof@1.2.0", "", {}, "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="],
+
+    "side-channel": ["side-channel@1.1.0", "", { "dependencies": { "es-errors": "^1.3.0", "object-inspect": "^1.13.3", "side-channel-list": "^1.0.0", "side-channel-map": "^1.0.1", "side-channel-weakmap": "^1.0.2" } }, "sha512-ZX99e6tRweoUXqR+VBrslhda51Nh5MTQwou5tnUDgbtyM0dBgmhEDtWGP/xbKn6hqfPRHujUNwz5fy/wbbhnpw=="],
+
+    "side-channel-list": ["side-channel-list@1.0.0", "", { "dependencies": { "es-errors": "^1.3.0", "object-inspect": "^1.13.3" } }, "sha512-FCLHtRD/gnpCiCHEiJLOwdmFP+wzCmDEkc9y7NsYxeF4u7Btsn1ZuwgwJGxImImHicJArLP4R0yX4c2KCrMrTA=="],
+
+    "side-channel-map": ["side-channel-map@1.0.1", "", { "dependencies": { "call-bound": "^1.0.2", "es-errors": "^1.3.0", "get-intrinsic": "^1.2.5", "object-inspect": "^1.13.3" } }, "sha512-VCjCNfgMsby3tTdo02nbjtM/ewra6jPHmpThenkTYh8pG9ucZ/1P8So4u4FGBek/BjpOVsDCMoLA/iuBKIFXRA=="],
+
+    "side-channel-weakmap": ["side-channel-weakmap@1.0.2", "", { "dependencies": { "call-bound": "^1.0.2", "es-errors": "^1.3.0", "get-intrinsic": "^1.2.5", "object-inspect": "^1.13.3", "side-channel-map": "^1.0.1" } }, "sha512-WPS/HvHQTYnHisLo9McqBHOJk2FkHO/tlpvldyrnem4aeQp4hai3gythswg6p01oSoTl58rcpiFAjF2br2Ak2A=="],
+
+    "statuses": ["statuses@2.0.2", "", {}, "sha512-DvEy55V3DB7uknRo+4iOGT5fP1slR8wQohVdknigZPMpMstaKJQWhwiYBACJE3Ul2pTnATihhBYnRhZQHGBiRw=="],
+
+    "toidentifier": ["toidentifier@1.0.1", "", {}, "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA=="],
+
+    "type-is": ["type-is@2.0.1", "", { "dependencies": { "content-type": "^1.0.5", "media-typer": "^1.1.0", "mime-types": "^3.0.0" } }, "sha512-OZs6gsjF4vMp32qrCbiVSkrFmXtG/AZhY3t0iAMrMBiAZyV9oALtXO8hsrHbMXF9x6L3grlFuwW2oAz7cav+Gw=="],
+
+    "typescript": ["typescript@5.9.2", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-CWBzXQrc/qOkhidw1OzBTQuYRbfyxDXJMVJ1XNwUHGROVmuaeiEm3OslpZ1RV96d7SKKjZKrSJu3+t/xlw3R9A=="],
+
+    "undici-types": ["undici-types@7.12.0", "", {}, "sha512-goOacqME2GYyOZZfb5Lgtu+1IDmAlAEu5xnD3+xTzS10hT0vzpf0SPjkXwAw9Jm+4n/mQGDP3LO8CPbYROeBfQ=="],
+
+    "unpipe": ["unpipe@1.0.0", "", {}, "sha512-pjy2bYhSsufwWlKwPc+l3cN7+wuJlK6uz0YdJEOlQDbl6jo/YlPi4mb8agUkVC8BF7V8NuzeyPNqRksA3hztKQ=="],
+
+    "vary": ["vary@1.1.2", "", {}, "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg=="],
+
+    "wrappy": ["wrappy@1.0.2", "", {}, "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ=="],
+
+    "zod": ["zod@4.1.9", "", {}, "sha512-HI32jTq0AUAC125z30E8bQNz0RQ+9Uc+4J7V97gLYjZVKRjeydPgGt6dvQzFrav7MYOUGFqqOGiHpA/fdbd0cQ=="],
+
+    "http-errors/statuses": ["statuses@2.0.1", "", {}, "sha512-RwNA9Z/7PrK06rYLIzFMlaF+l73iwpzsqRIFgbMLbTcLD6cOao82TaWefPXQvB2fOC4AjuYSEndS7N/mTCbkdQ=="],
+
+    "raw-body/iconv-lite": ["iconv-lite@0.7.0", "", { "dependencies": { "safer-buffer": ">= 2.1.2 < 3.0.0" } }, "sha512-cf6L2Ds3h57VVmkZe+Pn+5APsT7FpqJtEhhieDCvrE2MK5Qk9MyffgQyuxQTm6BChfeZNtcOLHp9IcWRVcIcBQ=="],
+  }
+}

Notesnook.Inbox.API/package.json

@@ -0,0 +1,34 @@
+{
+  "name": "notesnook-inbox-api",
+  "version": "1.0.0",
+  "description": "Notesnook Inbox API server",
+  "main": "dist/index.js",
+  "scripts": {
+    "build": "bun build src/index.ts --outdir dist --target bun",
+    "start": "bun run dist/index.js",
+    "dev": "bun --watch src/index.ts"
+  },
+  "keywords": [
+    "notesnook",
+    "inbox",
+    "api"
+  ],
+  "license": "GPL-3.0-or-later",
+  "author": {
+    "name": "Streetwriters (Private) Limited",
+    "email": "support@streetwriters.co",
+    "url": "https://streetwriters.co"
+  },
+  "dependencies": {
+    "express": "^5.1.0",
+    "express-rate-limit": "^8.1.0",
+    "libsodium-wrappers-sumo": "^0.7.15",
+    "zod": "^4.1.9"
+  },
+  "devDependencies": {
+    "@types/libsodium-wrappers-sumo": "^0.7.8",
+    "@types/express": "^5.0.3",
+    "@types/node": "^24.5.2",
+    "typescript": "^5.9.2"
+  }
+}

Notesnook.Inbox.API/src/index.ts

@@ -0,0 +1,193 @@
+import express from "express";
+import _sodium, { base64_variants } from "libsodium-wrappers-sumo";
+import { z } from "zod";
+import { rateLimit } from "express-rate-limit";
+
+const NOTESNOOK_API_SERVER_URL = process.env.NOTESNOOK_API_SERVER_URL;
+if (!NOTESNOOK_API_SERVER_URL) {
+  throw new Error("NOTESNOOK_API_SERVER_URL is not defined");
+}
+
+let sodium: typeof _sodium;
+
+const RawInboxItemSchema = z.object({
+  title: z.string().min(1, "Title is required"),
+  pinned: z.boolean().optional(),
+  favorite: z.boolean().optional(),
+  readonly: z.boolean().optional(),
+  archived: z.boolean().optional(),
+  notebookIds: z.array(z.string()).optional(),
+  tagIds: z.array(z.string()).optional(),
+  type: z.enum(["note"]),
+  source: z.string(),
+  version: z.literal(1),
+  content: z
+    .object({
+      type: z.enum(["html"]),
+      data: z.string(),
+    })
+    .optional(),
+});
+
+interface EncryptedInboxItem {
+  v: 1;
+  key: Omit<EncryptedInboxItem, "key" | "iv" | "v" | "salt">;
+  iv: string;
+  alg: string;
+  cipher: string;
+  length: number;
+  salt: string;
+}
+
+function encrypt(rawData: string, publicKey: string): EncryptedInboxItem {
+  try {
+    const password = sodium.crypto_aead_xchacha20poly1305_ietf_keygen();
+    const saltBytes = sodium.randombytes_buf(sodium.crypto_pwhash_SALTBYTES);
+    const key = sodium.crypto_pwhash(
+      sodium.crypto_aead_xchacha20poly1305_ietf_KEYBYTES,
+      password,
+      saltBytes,
+      3, // operations limit
+      1024 * 1024 * 8, // memory limit (8MB)
+      sodium.crypto_pwhash_ALG_ARGON2I13
+    );
+    const nonce = sodium.randombytes_buf(
+      sodium.crypto_aead_xchacha20poly1305_ietf_NPUBBYTES
+    );
+    const data = sodium.from_string(rawData);
+    const cipher = sodium.crypto_aead_xchacha20poly1305_ietf_encrypt(
+      data,
+      null,
+      null,
+      nonce,
+      key
+    );
+    const inboxPublicKey = sodium.from_base64(
+      publicKey,
+      base64_variants.URLSAFE_NO_PADDING
+    );
+    const encryptedKey = sodium.crypto_box_seal(key, inboxPublicKey);
+
+    return {
+      v: 1,
+      key: {
+        cipher: sodium.to_base64(
+          encryptedKey,
+          base64_variants.URLSAFE_NO_PADDING
+        ),
+        alg: `xsal-x25519-${base64_variants.URLSAFE_NO_PADDING}`,
+        length: password.length,
+      },
+      iv: sodium.to_base64(nonce, base64_variants.URLSAFE_NO_PADDING),
+      alg: `xcha-argon2i13-${base64_variants.URLSAFE_NO_PADDING}`,
+      cipher: sodium.to_base64(cipher, base64_variants.URLSAFE_NO_PADDING),
+      length: data.length,
+      salt: sodium.to_base64(saltBytes, base64_variants.URLSAFE_NO_PADDING),
+    };
+  } catch (error) {
+    throw new Error(`encryption failed: ${error}`);
+  }
+}
+
+async function getInboxPublicEncryptionKey(apiKey: string) {
+  const response = await fetch(
+    `${NOTESNOOK_API_SERVER_URL}/inbox/public-encryption-key`,
+    {
+      headers: {
+        Authorization: apiKey,
+      },
+    }
+  );
+  if (!response.ok) {
+    throw new Error(
+      `failed to fetch inbox public encryption key: ${await response.text()}`
+    );
+  }
+
+  const data = (await response.json()) as unknown as any;
+  return (data?.key as string) || null;
+}
+
+async function postEncryptedInboxItem(
+  apiKey: string,
+  item: EncryptedInboxItem
+) {
+  const response = await fetch(`${NOTESNOOK_API_SERVER_URL}/inbox/items`, {
+    method: "POST",
+    headers: {
+      "Content-Type": "application/json",
+      Authorization: apiKey,
+    },
+    body: JSON.stringify({ ...item }),
+  });
+  if (!response.ok) {
+    throw new Error(`failed to post inbox item: ${await response.text()}`);
+  }
+}
+
+const app = express();
+app.use(express.json({ limit: "10mb" }));
+app.use(
+  rateLimit({
+    windowMs: 1 * 60 * 1000, // 1 minute
+    limit: 60,
+  })
+);
+app.post("/inbox", async (req, res) => {
+  try {
+    const apiKey = req.headers["authorization"];
+    if (!apiKey) {
+      return res.status(401).json({ error: "unauthorized" });
+    }
+
+    const inboxPublicKey = await getInboxPublicEncryptionKey(apiKey);
+    if (!inboxPublicKey) {
+      return res.status(403).json({ error: "inbox public key not found" });
+    }
+    console.log("[info] fetched inbox public key");
+
+    const validationResult = RawInboxItemSchema.safeParse(req.body);
+    if (!validationResult.success) {
+      return res.status(400).json({
+        error: "invalid item",
+        details: validationResult.error.issues,
+      });
+    }
+
+    const encryptedItem = encrypt(
+      JSON.stringify(validationResult.data),
+      inboxPublicKey
+    );
+    console.log("[info] encrypted item");
+
+    await postEncryptedInboxItem(apiKey, encryptedItem);
+    console.log("[info] posted encrypted inbox item successfully");
+
+    return res.status(200).json({ success: true });
+  } catch (error) {
+    if (error instanceof Error) {
+      console.log("[error]", error.message);
+      return res
+        .status(500)
+        .json({ error: "internal server error", description: error.message });
+    } else {
+      console.log("[error] unknown error occured:", error);
+      return res.status(500).json({
+        error: "internal server error",
+        description: `unknown error occured: ${error}`,
+      });
+    }
+  }
+});
+
+(async () => {
+  await _sodium.ready;
+  sodium = _sodium;
+
+  const PORT = Number(process.env.PORT || "5181");
+  app.listen(PORT, () => {
+    console.log(`📫 notesnook inbox api server running on port ${PORT}`);
+  });
+})();
+
+export default app;

Notesnook.Inbox.API/tsconfig.json

@@ -0,0 +1,13 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "ESNext",
+    "lib": ["ES2020"],
+    "outDir": "./dist",
+    "strict": true,
+    "moduleResolution": "bundler",
+    "allowSyntheticDefaultImports": true
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}

README.md

@@ -8,7 +8,7 @@ This repo contains the full source code of the Notesnook Sync Server licensed un
 
 Requirements:
 
-1. [.NET 7](https://dotnet.microsoft.com/en-us/download/dotnet/7.0)
+1. [.NET 8](https://dotnet.microsoft.com/en-us/download/dotnet/8.0)
 2. [git](https://git-scm.com/downloads)
 
 The first step is to `clone` the repository:
@@ -55,35 +55,30 @@ dotnet run --project Streetwriters.Identity/Streetwriters.Identity.csproj
 
 The sync server can easily be started using Docker.
 
-The first step is to `clone` the repository:
-
 ```bash
-git clone https://github.com/streetwriters/notesnook-sync-server.git
-
-# change directory
-cd notesnook-sync-server
+wget https://raw.githubusercontent.com/streetwriters/notesnook-sync-server/master/docker-compose.yml
 ```
 
 And then use Docker Compose to start the servers:
 
 ```bash
-docker-compose up
+docker compose up
 ```
 
 This takes care of setting up everything including MongoDB, Minio etc.
 
 ## TODO Self-hosting
 
-**Note: Self-hosting the Notesnook Sync Server is not yet possible. We are working to enable full on-premise self hosting so stay tuned!**
+**Note: Self-hosting the Notesnook Sync Server is now possible, but without support. Documentation will be provided at a later date. We are working to enable full on-premise self-hosting, so stay tuned!**
 
 - [x] Open source the Sync server
 - [x] Open source the Identity server
 - [x] Open source the SSE Messaging infrastructure
 - [x] Fully Dockerize all services
 - [x] Use self-hosted Minio for S3 storage
-- [ ] Publish on DockerHub
+- [x] Publish on DockerHub
+- [x] Add settings to change server URLs in Notesnook client apps (starting from v3.0.18)
 - [ ] Write self hosting docs
-- [ ] Add settings to change server URLs in Notesnook client apps
 
 ## License
 

Streetwriters.Common/Accessors/WampServiceAccessor.cs

@@ -0,0 +1,48 @@
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Hosting;
+using Streetwriters.Common.Interfaces;
+
+namespace Streetwriters.Common.Accessors
+{
+    public class WampServiceAccessor(Server server) : IHostedService
+    {
+        public IUserAccountService UserAccountService { get; set; }
+        public IUserSubscriptionService? UserSubscriptionService { get; set; }
+
+        public async Task StartAsync(CancellationToken cancellationToken)
+        {
+            await InitAsync();
+        }
+
+        private async Task InitAsync()
+        {
+            this.UserAccountService = await WampServers.IdentityServer.GetServiceAsync<IUserAccountService>(InitAsync);
+            if (!Constants.IS_SELF_HOSTED && server != Servers.SubscriptionServer)
+            {
+                this.UserSubscriptionService = await WampServers.SubscriptionServer.GetServiceAsync<IUserSubscriptionService>(InitAsync);
+            }
+        }
+
+        public Task StopAsync(CancellationToken cancellationToken) => Task.CompletedTask;
+    }
+}

Streetwriters.Common/Clients.cs

@@ -1,82 +1,83 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using Streetwriters.Common.Enums;
-using Streetwriters.Common.Interfaces;
-using Streetwriters.Common.Messages;
-using Streetwriters.Common.Models;
-
-namespace Streetwriters.Common
-{
-    public class Clients
-    {
-        public static readonly Client Notesnook = new()
-        {
-            Id = "notesnook",
-            Name = "Notesnook",
-            SenderEmail = Constants.NOTESNOOK_SENDER_EMAIL,
-            SenderName = Constants.NOTESNOOK_SENDER_NAME,
-            Type = ApplicationType.NOTESNOOK,
-            AppId = ApplicationType.NOTESNOOK,
-            AccountRecoveryRedirectURL = $"{Constants.NOTESNOOK_APP_HOST}/account/recovery",
-            EmailConfirmedRedirectURL = $"{Constants.NOTESNOOK_APP_HOST}/account/verified",
-            OnEmailConfirmed = async (userId) =>
-            {
-                await WampServers.MessengerServer.PublishMessageAsync(MessengerServerTopics.SendSSETopic, new SendSSEMessage
-                {
-                    UserId = userId,
-                    Message = new Message
-                    {
-                        Type = "emailConfirmed",
-                        Data = null
-                    }
-                });
-            }
-        };
-
-        public static Dictionary<string, Client> ClientsMap = new()
-        {
-            { "notesnook", Notesnook }
-        };
-
-        public static Client FindClientById(string id)
-        {
-            if (!IsValidClient(id)) return null;
-            return ClientsMap[id];
-        }
-
-        public static Client FindClientByAppId(ApplicationType appId)
-        {
-            switch (appId)
-            {
-                case ApplicationType.NOTESNOOK:
-                    return ClientsMap["notesnook"];
-            }
-            return null;
-        }
-
-        public static bool IsValidClient(string id)
-        {
-            return ClientsMap.ContainsKey(id);
-        }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Streetwriters.Common.Enums;
+using Streetwriters.Common.Interfaces;
+using Streetwriters.Common.Messages;
+using Streetwriters.Common.Models;
+
+namespace Streetwriters.Common
+{
+    public class Clients
+    {
+        public static readonly Client Notesnook = new()
+        {
+            Id = "notesnook",
+            Name = "Notesnook",
+            SenderEmail = Constants.NOTESNOOK_SENDER_EMAIL ?? "noreply@notesnook.com",
+            SenderName = "Notesnook",
+            Type = ApplicationType.NOTESNOOK,
+            AppId = ApplicationType.NOTESNOOK,
+            AccountRecoveryRedirectURL = $"{Constants.NOTESNOOK_APP_HOST}/account/recovery",
+            EmailConfirmedRedirectURL = $"{Constants.NOTESNOOK_APP_HOST}/account/verified",
+            OnEmailConfirmed = async (userId) =>
+            {
+                await WampServers.MessengerServer.PublishMessageAsync(MessengerServerTopics.SendSSETopic, new SendSSEMessage
+                {
+                    UserId = userId,
+                    Message = new Message
+                    {
+                        Type = "emailConfirmed",
+                        Data = null
+                    }
+                });
+            }
+        };
+
+        public static Dictionary<string, Client> ClientsMap = new()
+        {
+            { "notesnook", Notesnook }
+        };
+
+        public static Client? FindClientById(string? id)
+        {
+            if (string.IsNullOrEmpty(id) || !IsValidClient(id)) return null;
+            return ClientsMap[id];
+        }
+
+        public static Client? FindClientByAppId(ApplicationType? appId)
+        {
+            if (appId is null) return null;
+            switch (appId)
+            {
+                case ApplicationType.NOTESNOOK:
+                    return ClientsMap["notesnook"];
+            }
+            return null;
+        }
+
+        public static bool IsValidClient(string id)
+        {
+            return ClientsMap.ContainsKey(id);
+        }
+    }
 }

Streetwriters.Common/Constants.cs

@@ -1,83 +1,96 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-
-namespace Streetwriters.Common
-{
-    public class Constants
-    {
-        public static bool IS_SELF_HOSTED => Environment.GetEnvironmentVariable("SELF_HOSTED") == "1";
-
-        // S3 related
-        public static string S3_ACCESS_KEY => Environment.GetEnvironmentVariable("S3_ACCESS_KEY");
-        public static string S3_ACCESS_KEY_ID => Environment.GetEnvironmentVariable("S3_ACCESS_KEY_ID");
-        public static string S3_SERVICE_URL => Environment.GetEnvironmentVariable("S3_SERVICE_URL");
-        public static string S3_REGION => Environment.GetEnvironmentVariable("S3_REGION");
-        public static string S3_BUCKET_NAME => Environment.GetEnvironmentVariable("S3_BUCKET_NAME");
-        public static string S3_INTERNAL_BUCKET_NAME => Environment.GetEnvironmentVariable("S3_INTERNAL_BUCKET_NAME");
-        public static string S3_INTERNAL_SERVICE_URL => Environment.GetEnvironmentVariable("S3_INTERNAL_SERVICE_URL");
-
-        // SMTP settings
-        public static string SMTP_USERNAME => Environment.GetEnvironmentVariable("SMTP_USERNAME");
-        public static string SMTP_PASSWORD => Environment.GetEnvironmentVariable("SMTP_PASSWORD");
-        public static string SMTP_HOST => Environment.GetEnvironmentVariable("SMTP_HOST");
-        public static string SMTP_PORT => Environment.GetEnvironmentVariable("SMTP_PORT");
-        public static string SMTP_REPLYTO_NAME => Environment.GetEnvironmentVariable("SMTP_REPLYTO_NAME");
-        public static string SMTP_REPLYTO_EMAIL => Environment.GetEnvironmentVariable("SMTP_REPLYTO_EMAIL");
-        public static string NOTESNOOK_SENDER_EMAIL => Environment.GetEnvironmentVariable("NOTESNOOK_SENDER_EMAIL");
-        public static string NOTESNOOK_SENDER_NAME => Environment.GetEnvironmentVariable("NOTESNOOK_SENDER_NAME");
-
-        public static string NOTESNOOK_APP_HOST => Environment.GetEnvironmentVariable("NOTESNOOK_APP_HOST");
-        public static string NOTESNOOK_API_SECRET => Environment.GetEnvironmentVariable("NOTESNOOK_API_SECRET");
-
-        // MessageBird is used for SMS sending
-        public static string TWILIO_ACCOUNT_SID => Environment.GetEnvironmentVariable("TWILIO_ACCOUNT_SID");
-        public static string TWILIO_AUTH_TOKEN => Environment.GetEnvironmentVariable("TWILIO_AUTH_TOKEN");
-        public static string TWILIO_SERVICE_SID => Environment.GetEnvironmentVariable("TWILIO_SERVICE_SID");
-        // Server discovery
-        public static int NOTESNOOK_SERVER_PORT => int.Parse(Environment.GetEnvironmentVariable("NOTESNOOK_SERVER_PORT") ?? "80");
-        public static string NOTESNOOK_SERVER_HOST => Environment.GetEnvironmentVariable("NOTESNOOK_SERVER_HOST");
-        public static string NOTESNOOK_SERVER_DOMAIN => Environment.GetEnvironmentVariable("NOTESNOOK_SERVER_DOMAIN");
-        public static string NOTESNOOK_CERT_PATH => Environment.GetEnvironmentVariable("NOTESNOOK_CERT_PATH");
-        public static string NOTESNOOK_CERT_KEY_PATH => Environment.GetEnvironmentVariable("NOTESNOOK_CERT_KEY_PATH");
-
-        public static int IDENTITY_SERVER_PORT => int.Parse(Environment.GetEnvironmentVariable("IDENTITY_SERVER_PORT") ?? "80");
-        public static string IDENTITY_SERVER_HOST => Environment.GetEnvironmentVariable("IDENTITY_SERVER_HOST");
-        public static string IDENTITY_SERVER_DOMAIN => Environment.GetEnvironmentVariable("IDENTITY_SERVER_DOMAIN");
-        public static string IDENTITY_CERT_PATH => Environment.GetEnvironmentVariable("IDENTITY_CERT_PATH");
-        public static string IDENTITY_CERT_KEY_PATH => Environment.GetEnvironmentVariable("IDENTITY_CERT_KEY_PATH");
-
-        public static int SSE_SERVER_PORT => int.Parse(Environment.GetEnvironmentVariable("SSE_SERVER_PORT") ?? "80");
-        public static string SSE_SERVER_HOST => Environment.GetEnvironmentVariable("SSE_SERVER_HOST");
-        public static string SSE_SERVER_DOMAIN => Environment.GetEnvironmentVariable("SSE_SERVER_DOMAIN");
-        public static string SSE_CERT_PATH => Environment.GetEnvironmentVariable("SSE_CERT_PATH");
-        public static string SSE_CERT_KEY_PATH => Environment.GetEnvironmentVariable("SSE_CERT_KEY_PATH");
-
-        // internal
-        public static string MONGODB_CONNECTION_STRING => Environment.GetEnvironmentVariable("MONGODB_CONNECTION_STRING");
-        public static string MONGODB_DATABASE_NAME => Environment.GetEnvironmentVariable("MONGODB_DATABASE_NAME");
-        public static int SUBSCRIPTIONS_SERVER_PORT => int.Parse(Environment.GetEnvironmentVariable("SUBSCRIPTIONS_SERVER_PORT") ?? "80");
-        public static string SUBSCRIPTIONS_SERVER_HOST => Environment.GetEnvironmentVariable("SUBSCRIPTIONS_SERVER_HOST");
-        public static string SUBSCRIPTIONS_SERVER_DOMAIN => Environment.GetEnvironmentVariable("SUBSCRIPTIONS_SERVER_DOMAIN");
-        public static string SUBSCRIPTIONS_CERT_PATH => Environment.GetEnvironmentVariable("SUBSCRIPTIONS_CERT_PATH");
-        public static string SUBSCRIPTIONS_CERT_KEY_PATH => Environment.GetEnvironmentVariable("SUBSCRIPTIONS_CERT_KEY_PATH");
-        public static string[] NOTESNOOK_CORS_ORIGINS => Environment.GetEnvironmentVariable("NOTESNOOK_CORS")?.Split(",") ?? new string[] { };
-    }
-}
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+
+namespace Streetwriters.Common
+{
+    public class Constants
+    {
+        public static int COMPATIBILITY_VERSION = 1;
+        public static bool IS_SELF_HOSTED => ReadSecret("SELF_HOSTED") == "1";
+        public static bool DISABLE_SIGNUPS => ReadSecret("DISABLE_SIGNUPS") == "true";
+        public static string INSTANCE_NAME => ReadSecret("INSTANCE_NAME") ?? "default";
+
+        // S3 related
+        public static string S3_ACCESS_KEY => ReadSecret("S3_ACCESS_KEY") ?? throw new InvalidOperationException("S3_ACCESS_KEY is required");
+        public static string S3_ACCESS_KEY_ID => ReadSecret("S3_ACCESS_KEY_ID") ?? throw new InvalidOperationException("S3_ACCESS_KEY_ID is required");
+        public static string S3_SERVICE_URL => ReadSecret("S3_SERVICE_URL") ?? throw new InvalidOperationException("S3_SERVICE_URL is required");
+        public static string S3_REGION => ReadSecret("S3_REGION") ?? throw new InvalidOperationException("S3_REGION is required");
+        public static string S3_BUCKET_NAME => ReadSecret("S3_BUCKET_NAME") ?? throw new InvalidOperationException("S3_BUCKET_NAME is required");
+        public static string? S3_INTERNAL_BUCKET_NAME => ReadSecret("S3_INTERNAL_BUCKET_NAME");
+        public static string? S3_INTERNAL_SERVICE_URL => ReadSecret("S3_INTERNAL_SERVICE_URL");
+
+        // SMTP settings
+        public static string? SMTP_USERNAME => ReadSecret("SMTP_USERNAME");
+        public static string? SMTP_PASSWORD => ReadSecret("SMTP_PASSWORD");
+        public static string? SMTP_HOST => ReadSecret("SMTP_HOST");
+        public static string? SMTP_PORT => ReadSecret("SMTP_PORT");
+        public static string? SMTP_REPLYTO_EMAIL => ReadSecret("SMTP_REPLYTO_EMAIL");
+        public static string? NOTESNOOK_SENDER_EMAIL => ReadSecret("NOTESNOOK_SENDER_EMAIL") ?? ReadSecret("SMTP_USERNAME");
+
+        public static string? NOTESNOOK_APP_HOST => ReadSecret("NOTESNOOK_APP_HOST");
+        public static string NOTESNOOK_API_SECRET => ReadSecret("NOTESNOOK_API_SECRET") ?? throw new InvalidOperationException("NOTESNOOK_API_SECRET is required");
+
+        // MessageBird is used for SMS sending
+        public static string? TWILIO_ACCOUNT_SID => ReadSecret("TWILIO_ACCOUNT_SID");
+        public static string? TWILIO_AUTH_TOKEN => ReadSecret("TWILIO_AUTH_TOKEN");
+        public static string? TWILIO_SERVICE_SID => ReadSecret("TWILIO_SERVICE_SID");
+        // Server discovery
+        public static int NOTESNOOK_SERVER_PORT => int.Parse(ReadSecret("NOTESNOOK_SERVER_PORT") ?? "80");
+        public static string? NOTESNOOK_SERVER_HOST => ReadSecret("NOTESNOOK_SERVER_HOST");
+        public static string? NOTESNOOK_CERT_PATH => ReadSecret("NOTESNOOK_CERT_PATH");
+        public static string? NOTESNOOK_CERT_KEY_PATH => ReadSecret("NOTESNOOK_CERT_KEY_PATH");
+        public static string[] KNOWN_PROXIES => (ReadSecret("KNOWN_PROXIES") ?? "").Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+
+        public static int IDENTITY_SERVER_PORT => int.Parse(ReadSecret("IDENTITY_SERVER_PORT") ?? "80");
+        public static string? IDENTITY_SERVER_HOST => ReadSecret("IDENTITY_SERVER_HOST");
+        public static Uri? IDENTITY_SERVER_URL => ReadSecret("IDENTITY_SERVER_URL") is string url ? new Uri(url) : null;
+        public static string? IDENTITY_CERT_PATH => ReadSecret("IDENTITY_CERT_PATH");
+        public static string? IDENTITY_CERT_KEY_PATH => ReadSecret("IDENTITY_CERT_KEY_PATH");
+
+        public static int SSE_SERVER_PORT => int.Parse(ReadSecret("SSE_SERVER_PORT") ?? "80");
+        public static string? SSE_SERVER_HOST => ReadSecret("SSE_SERVER_HOST");
+        public static string? SSE_CERT_PATH => ReadSecret("SSE_CERT_PATH");
+        public static string? SSE_CERT_KEY_PATH => ReadSecret("SSE_CERT_KEY_PATH");
+
+        // internal
+        public static string? WEBRISK_API_URI => ReadSecret("WEBRISK_API_URI");
+        public static string MONGODB_CONNECTION_STRING => ReadSecret("MONGODB_CONNECTION_STRING") ?? throw new ArgumentNullException("MONGODB_CONNECTION_STRING environment variable is not set");
+        public static string MONGODB_DATABASE_NAME => ReadSecret("MONGODB_DATABASE_NAME") ?? throw new ArgumentNullException("MONGODB_DATABASE_NAME environment variable is not set");
+        public static int SUBSCRIPTIONS_SERVER_PORT => int.Parse(ReadSecret("SUBSCRIPTIONS_SERVER_PORT") ?? "80");
+        public static string? SUBSCRIPTIONS_SERVER_HOST => ReadSecret("SUBSCRIPTIONS_SERVER_HOST");
+        public static string? SUBSCRIPTIONS_CERT_PATH => ReadSecret("SUBSCRIPTIONS_CERT_PATH");
+        public static string? SUBSCRIPTIONS_CERT_KEY_PATH => ReadSecret("SUBSCRIPTIONS_CERT_KEY_PATH");
+        public static string[] NOTESNOOK_CORS_ORIGINS => ReadSecret("NOTESNOOK_CORS")?.Split(",") ?? [];
+
+        public static string? ReadSecret(string name)
+        {
+            var value = Environment.GetEnvironmentVariable(name);
+            if (!string.IsNullOrEmpty(value)) return value;
+            var file = Environment.GetEnvironmentVariable(name + "_FILE");
+            if (!string.IsNullOrEmpty(file) && System.IO.File.Exists(file))
+            {
+                return System.IO.File.ReadAllText(file);
+            }
+            return null;
+        }
+    }
+}
+

Streetwriters.Common/Converters/InterfaceConverter.cs

@@ -1,54 +0,0 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-
-namespace Streetwriters.Common.Converters
-{
-    /// <summary>
-    /// Converts simple interface into an object (assumes that there is only one class of TInterface)
-    /// </summary>
-    /// <typeparam name="TInterface">Interface type</typeparam>
-    /// <typeparam name="TClass">Class type</typeparam>
-    public class InterfaceConverter<TInterface, TClass> : JsonConverter<TInterface> where TClass : TInterface
-    {
-        public override TInterface Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
-        {
-            return JsonSerializer.Deserialize<TClass>(ref reader, options);
-        }
-
-        public override void Write(Utf8JsonWriter writer, TInterface value, JsonSerializerOptions options)
-        {
-            switch (value)
-            {
-                case null:
-                    JsonSerializer.Serialize(writer, null, options);
-                    break;
-                default:
-                    {
-                        var type = value.GetType();
-                        JsonSerializer.Serialize(writer, value, type, options);
-                        break;
-                    }
-            }
-        }
-    }
-}

Streetwriters.Common/Enums/ApplicationType.cs

@@ -1,26 +1,26 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-namespace Streetwriters.Common.Enums
-{
-    public enum ApplicationType
-    {
-        NOTESNOOK = 0
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace Streetwriters.Common.Enums
+{
+    public enum ApplicationType
+    {
+        NOTESNOOK = 0
+    }
 }

Streetwriters.Common/Enums/MFAMethods.cs

@@ -1,29 +1,29 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-namespace Streetwriters.Common.Enums
-{
-    public class MFAMethods
-    {
-        public static string Email => "email";
-        public static string SMS => "sms";
-        public static string App => "app";
-        public static string RecoveryCode => "recoveryCode";
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace Streetwriters.Common.Enums
+{
+    public class MFAMethods
+    {
+        public static string Email => "email";
+        public static string SMS => "sms";
+        public static string App => "app";
+        public static string RecoveryCode => "recoveryCode";
+    }
 }

Streetwriters.Common/Enums/SubscriptionPlan.cs

@@ -17,16 +17,17 @@ You should have received a copy of the Affero GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-namespace Streetwriters.Common
+using System;
+
+namespace Streetwriters.Common.Enums
 {
-    public class Version
+    public enum SubscriptionPlan
     {
-        public const int MAJOR = 2;
-        public const int MINOR = 3;
-        public const int PATCH = 0;
-        public static string AsString()
-        {
-            return $"{Version.MAJOR}.{Version.MINOR}.{Version.PATCH}";
-        }
+        FREE = 0,
+        ESSENTIAL = 1,
+        PRO = 2,
+        BELIEVER = 3,
+        EDUCATION = 4,
+        LEGACY_PRO = 5
     }
 }

Streetwriters.Common/Enums/SubscriptionProvider.cs

@@ -1,29 +1,30 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-namespace Streetwriters.Common.Enums
-{
-    public enum SubscriptionProvider
-    {
-        STREETWRITERS = 0,
-        APPLE = 1,
-        GOOGLE = 2,
-        PADDLE = 3
-    }
-}
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace Streetwriters.Common.Enums
+{
+    public enum SubscriptionProvider
+    {
+        STREETWRITERS = 0,
+        APPLE = 1,
+        GOOGLE = 2,
+        PADDLE = 3,
+        GIFT_CARD = 4,
+    }
+}

Streetwriters.Common/Enums/SubscriptionStatus.cs

@@ -17,13 +17,14 @@ You should have received a copy of the Affero GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-namespace Notesnook.API.Interfaces
+namespace Streetwriters.Common.Enums
 {
-    public interface IEncrypted
+    public enum SubscriptionStatus
     {
-        string Cipher { get; set; }
-        string IV { get; set; }
-        long Length { get; set; }
-        string Salt { get; set; }
+        ACTIVE,
+        TRIAL,
+        CANCELED,
+        PAUSED,
+        EXPIRED
     }
-}
+}

Streetwriters.Common/Enums/SubscriptionType.cs

@@ -27,6 +27,6 @@ namespace Streetwriters.Common.Enums
         PREMIUM = 5,
         PREMIUM_EXPIRED = 6,
         PREMIUM_CANCELED = 7,
-        PREMIUM_PAUSED = 8
+        PREMIUM_PAUSED = 8,
     }
 }

Streetwriters.Common/Extensions/AppBuilderExtensions.cs

@@ -1,77 +1,113 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-using Microsoft.AspNetCore.Builder;
-using Microsoft.AspNetCore.Http;
-using Microsoft.Extensions.DependencyInjection;
-using WampSharp.AspNetCore.WebSockets.Server;
-using WampSharp.Binding;
-using WampSharp.V2;
-using WampSharp.V2.Realm;
-
-namespace Streetwriters.Common.Extensions
-{
-    public static class AppBuilderExtensions
-    {
-        public static IApplicationBuilder UseVersion(this IApplicationBuilder app)
-        {
-            app.Map("/version", (app) =>
-            {
-                app.Run(async context =>
-                {
-                    await context.Response.WriteAsync(Version.AsString());
-                });
-            });
-            return app;
-        }
-
-        public static IApplicationBuilder UseWamp<T>(this IApplicationBuilder app, WampServer<T> server, Action<IWampHostedRealm, WampServer<T>> action) where T : new()
-        {
-            WampHost host = new WampHost();
-
-            app.Map(server.Endpoint, builder =>
-            {
-                builder.UseWebSockets();
-                host.RegisterTransport(new AspNetCoreWebSocketTransport(builder),
-                                       new JTokenJsonBinding(),
-                                       new JTokenMsgpackBinding());
-            });
-
-            host.Open();
-
-            action.Invoke(host.RealmContainer.GetRealmByName(server.Realm), server);
-
-            return app;
-        }
-
-        public static T GetService<T>(this IApplicationBuilder app)
-        {
-            return app.ApplicationServices.GetRequiredService<T>();
-        }
-
-        public static T GetScopedService<T>(this IApplicationBuilder app)
-        {
-            using (var scope = app.ApplicationServices.CreateScope())
-            {
-                return scope.ServiceProvider.GetRequiredService<T>();
-            }
-        }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Net;
+using System.Text.Json;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.HttpOverrides;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using WampSharp.AspNetCore.WebSockets.Server;
+using WampSharp.Binding;
+using WampSharp.V2;
+using WampSharp.V2.Realm;
+
+namespace Streetwriters.Common.Extensions
+{
+    public static class AppBuilderExtensions
+    {
+        public static IApplicationBuilder UseVersion(this IApplicationBuilder app, Server server)
+        {
+            app.Map("/version", (app) =>
+            {
+                app.Run(async context =>
+                {
+                    context.Response.ContentType = "application/json";
+                    var data = new Dictionary<string, object>
+                    {
+                        { "version", Constants.COMPATIBILITY_VERSION },
+                        { "id", server.Id ?? "unknown" },
+                        { "instance", Constants.INSTANCE_NAME }
+                    };
+                    await context.Response.WriteAsync(JsonSerializer.Serialize(data));
+                });
+            });
+            return app;
+        }
+
+        public static IApplicationBuilder UseWamp(this IApplicationBuilder app, WampServer server, Action<IWampHostedRealm, WampServer> action)
+        {
+            WampHost host = new();
+
+            app.Map(server.Endpoint, builder =>
+            {
+                builder.UseWebSockets();
+                host.RegisterTransport(new AspNetCoreWebSocketTransport(builder),
+                                       new JTokenJsonBinding(),
+                                       new JTokenMsgpackBinding());
+            });
+
+            host.Open();
+
+            action.Invoke(host.RealmContainer.GetRealmByName(server.Realm), server);
+
+            return app;
+        }
+
+        public static T GetService<T>(this IApplicationBuilder app) where T : notnull
+        {
+            return app.ApplicationServices.GetRequiredService<T>();
+        }
+
+        public static T GetScopedService<T>(this IApplicationBuilder app) where T : notnull
+        {
+            using var scope = app.ApplicationServices.CreateScope();
+            return scope.ServiceProvider.GetRequiredService<T>();
+        }
+
+        public static IApplicationBuilder UseForwardedHeadersWithKnownProxies(this IApplicationBuilder app, IWebHostEnvironment env, string forwardedForHeaderName = null)
+        {
+            if (!env.IsDevelopment())
+            {
+                var forwardedHeadersOptions = new ForwardedHeadersOptions
+                {
+                    ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto
+                };
+
+                if (!string.IsNullOrEmpty(forwardedForHeaderName))
+                {
+                    forwardedHeadersOptions.ForwardedForHeaderName = forwardedForHeaderName;
+                }
+
+                foreach (var proxy in Constants.KNOWN_PROXIES)
+                {
+                    forwardedHeadersOptions.KnownProxies.Add(IPAddress.Parse(proxy));
+                }
+
+                app.UseForwardedHeaders(forwardedHeadersOptions);
+            }
+
+            return app;
+        }
+    }
 }

Streetwriters.Common/Extensions/HttpClientExtensions.cs

@@ -1,72 +1,76 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System.Linq;
-using System.Net.Http;
-using System.Net.Http.Json;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Http;
-using Streetwriters.Common.Interfaces;
-
-namespace Streetwriters.Common.Extensions
-{
-    public static class HttpClientExtensions
-    {
-        public static async Task<T> SendRequestAsync<T>(this HttpClient httpClient, string url, IHeaderDictionary headers, HttpMethod method, HttpContent content = null) where T : IResponse, new()
-        {
-            var request = new HttpRequestMessage(method, url);
-
-            if (method != HttpMethod.Get && method != HttpMethod.Delete)
-            {
-                request.Content = content;
-            }
-
-            foreach (var header in headers)
-            {
-                if (header.Key == "Content-Type" || header.Key == "Content-Length")
-                {
-                    if (request.Content != null)
-                        request.Content.Headers.TryAddWithoutValidation(header.Key, header.Value.AsEnumerable());
-                    continue;
-                }
-                request.Headers.TryAddWithoutValidation(header.Key, header.Value.AsEnumerable());
-            }
-
-            var response = await httpClient.SendAsync(request);
-            if (response.Content.Headers.ContentLength > 0)
-            {
-                var res = await response.Content.ReadFromJsonAsync<T>();
-                res.Success = response.IsSuccessStatusCode;
-                res.StatusCode = (int)response.StatusCode;
-                return res;
-            }
-            else
-            {
-                return new T { Success = response.IsSuccessStatusCode, StatusCode = (int)response.StatusCode };
-            }
-        }
-
-        public static Task<T> ForwardAsync<T>(this HttpClient httpClient, IHttpContextAccessor accessor, string url, HttpMethod method) where T : IResponse, new()
-        {
-            var httpContext = accessor.HttpContext;
-            var content = new StreamContent(httpContext.Request.BodyReader.AsStream());
-            return httpClient.SendRequestAsync<T>(url, httpContext.Request.Headers, method, content);
-        }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Linq;
+using System.Net.Http;
+using System.Net.Http.Json;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Http;
+using Streetwriters.Common.Interfaces;
+
+namespace Streetwriters.Common.Extensions
+{
+    public static class HttpClientExtensions
+    {
+        public static async Task<T> SendRequestAsync<T>(this HttpClient httpClient, string url, IHeaderDictionary? headers, HttpMethod method, HttpContent? content = null) where T : IResponse, new()
+        {
+            var request = new HttpRequestMessage(method, url);
+
+            if (method != HttpMethod.Get && method != HttpMethod.Delete)
+            {
+                request.Content = content;
+            }
+
+            if (headers != null)
+            {
+                foreach (var header in headers)
+                {
+                    if (header.Key == "Content-Type" || header.Key == "Content-Length")
+                    {
+                        request.Content?.Headers.TryAddWithoutValidation(header.Key, header.Value.AsEnumerable());
+                        continue;
+                    }
+                    request.Headers.TryAddWithoutValidation(header.Key, header.Value.AsEnumerable());
+                }
+            }
+
+            var response = await httpClient.SendAsync(request);
+            if (response.Content.Headers.ContentLength > 0 && response.Content.Headers.ContentType?.ToString()?.Contains("application/json") == true)
+            {
+                var res = await response.Content.ReadFromJsonAsync<T>();
+                if (res != null)
+                {
+                    res.Success = response.IsSuccessStatusCode;
+                    res.StatusCode = (int)response.StatusCode;
+                    return res;
+                }
+            }
+
+            return new T { Success = response.IsSuccessStatusCode, StatusCode = (int)response.StatusCode, Content = response.Content };
+        }
+
+        public static Task<T> ForwardAsync<T>(this HttpClient httpClient, IHttpContextAccessor accessor, string url, HttpMethod method) where T : IResponse, new()
+        {
+            var httpContext = accessor.HttpContext ?? throw new InvalidOperationException("HttpContext is not available");
+            var content = new StreamContent(httpContext.Request.BodyReader.AsStream());
+            return httpClient.SendRequestAsync<T>(url, httpContext.Request.Headers, method, content);
+        }
+    }
 }

Streetwriters.Common/Extensions/ServiceCollectionServiceExtensions.cs

@@ -1,53 +1,61 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using Microsoft.Extensions.DependencyInjection;
-using Streetwriters.Data.DbContexts;
-using Streetwriters.Data.Repositories;
-
-namespace Streetwriters.Common.Extensions
-{
-    public static class ServiceCollectionServiceExtensions
-    {
-        public static IServiceCollection AddRepository<T>(this IServiceCollection services, string collectionName, string database) where T : class
-        {
-            services.AddSingleton((provider) => MongoDbContext.GetMongoCollection<T>(provider.GetService<MongoDB.Driver.IMongoClient>(), database, collectionName));
-            services.AddScoped<Repository<T>>();
-            return services;
-        }
-
-        public static IServiceCollection AddDefaultCors(this IServiceCollection services)
-        {
-            services.AddCors(options =>
-            {
-                options.AddPolicy("notesnook", (b) =>
-                {
-                    if (Constants.NOTESNOOK_CORS_ORIGINS.Length <= 0)
-                        b.AllowAnyOrigin();
-                    else
-                        b.WithOrigins(Constants.NOTESNOOK_CORS_ORIGINS);
-
-                    b.AllowAnyMethod()
-                    .AllowAnyHeader();
-                });
-            });
-            return services;
-        }
-    }
-}
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using Microsoft.Extensions.DependencyInjection;
+using Streetwriters.Common.Accessors;
+using Streetwriters.Data.DbContexts;
+using Streetwriters.Data.Repositories;
+
+namespace Streetwriters.Common.Extensions
+{
+    public static class ServiceCollectionServiceExtensions
+    {
+        public static IServiceCollection AddWampServiceAccessor(this IServiceCollection services, Server server)
+        {
+            services.AddSingleton<WampServiceAccessor>((provider) => new WampServiceAccessor(server));
+            services.AddHostedService(provider => provider.GetRequiredService<WampServiceAccessor>());
+            return services;
+        }
+
+        public static IServiceCollection AddRepository<T>(this IServiceCollection services, string collectionName, string database) where T : class
+        {
+            services.AddSingleton((provider) => MongoDbContext.GetMongoCollection<T>(provider.GetRequiredService<MongoDB.Driver.IMongoClient>(), database, collectionName));
+            services.AddScoped<Repository<T>>();
+            return services;
+        }
+
+        public static IServiceCollection AddDefaultCors(this IServiceCollection services)
+        {
+            services.AddCors(options =>
+            {
+                options.AddPolicy("notesnook", (b) =>
+                {
+                    if (Constants.NOTESNOOK_CORS_ORIGINS.Length <= 0)
+                        b.AllowAnyOrigin();
+                    else
+                        b.WithOrigins(Constants.NOTESNOOK_CORS_ORIGINS);
+
+                    b.AllowAnyMethod()
+                    .AllowAnyHeader();
+                });
+            });
+            return services;
+        }
+    }
+}

Streetwriters.Common/Extensions/StringExtensions.cs

@@ -1,87 +1,87 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System.IO;
-using System.IO.Compression;
-using System.Security.Cryptography;
-using System.Text;
-
-namespace System
-{
-    public static class StringExtensions
-    {
-        public static string Sha256(this string input)
-        {
-            var bytes = Encoding.UTF8.GetBytes(input);
-            var hash = SHA256.HashData(bytes);
-            return Convert.ToBase64String(hash);
-        }
-
-        public static byte[] CompressBrotli(this string input)
-        {
-            var raw = Encoding.Default.GetBytes(input);
-            using (MemoryStream memory = new MemoryStream())
-            {
-                using (BrotliStream brotli = new BrotliStream(memory, CompressionLevel.Optimal))
-                {
-                    brotli.Write(raw, 0, raw.Length);
-                }
-                return memory.ToArray();
-            }
-        }
-
-        public static string DecompressBrotli(this byte[] compressed)
-        {
-            using (BrotliStream stream = new BrotliStream(new MemoryStream(compressed), CompressionMode.Decompress))
-            {
-                const int size = 4096;
-                byte[] buffer = new byte[size];
-                using (MemoryStream memory = new MemoryStream())
-                {
-                    int count = 0;
-                    do
-                    {
-                        count = stream.Read(buffer, 0, size);
-                        if (count > 0)
-                        {
-                            memory.Write(buffer, 0, count);
-                        }
-                    }
-                    while (count > 0);
-                    return Encoding.Default.GetString(memory.ToArray());
-                }
-            }
-        }
-
-        private static string ToHex(byte[] bytes, int startIndex, int length)
-        {
-            char[] c = new char[length * 2];
-            byte b;
-            for (int bx = startIndex, cx = startIndex; bx < length; ++bx, ++cx)
-            {
-                b = ((byte)(bytes[bx] >> 4));
-                c[cx] = (char)(b > 9 ? b + 0x37 + 0x20 : b + 0x30);
-
-                b = ((byte)(bytes[bx] & 0x0F));
-                c[++cx] = (char)(b > 9 ? b + 0x37 + 0x20 : b + 0x30);
-            }
-            return new string(c);
-        }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.IO;
+using System.IO.Compression;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace System
+{
+    public static class StringExtensions
+    {
+        public static string Sha256(this string input)
+        {
+            var bytes = Encoding.UTF8.GetBytes(input);
+            var hash = SHA256.HashData(bytes);
+            return Convert.ToBase64String(hash);
+        }
+
+        public static byte[] CompressBrotli(this string input)
+        {
+            var raw = Encoding.Default.GetBytes(input);
+            using (MemoryStream memory = new MemoryStream())
+            {
+                using (BrotliStream brotli = new BrotliStream(memory, CompressionLevel.Optimal))
+                {
+                    brotli.Write(raw, 0, raw.Length);
+                }
+                return memory.ToArray();
+            }
+        }
+
+        public static string DecompressBrotli(this byte[] compressed)
+        {
+            using (BrotliStream stream = new BrotliStream(new MemoryStream(compressed), CompressionMode.Decompress))
+            {
+                const int size = 4096;
+                byte[] buffer = new byte[size];
+                using (MemoryStream memory = new MemoryStream())
+                {
+                    int count = 0;
+                    do
+                    {
+                        count = stream.Read(buffer, 0, size);
+                        if (count > 0)
+                        {
+                            memory.Write(buffer, 0, count);
+                        }
+                    }
+                    while (count > 0);
+                    return Encoding.Default.GetString(memory.ToArray());
+                }
+            }
+        }
+
+        private static string ToHex(byte[] bytes, int startIndex, int length)
+        {
+            char[] c = new char[length * 2];
+            byte b;
+            for (int bx = startIndex, cx = startIndex; bx < length; ++bx, ++cx)
+            {
+                b = ((byte)(bytes[bx] >> 4));
+                c[cx] = (char)(b > 9 ? b + 0x37 + 0x20 : b + 0x30);
+
+                b = ((byte)(bytes[bx] & 0x0F));
+                c[++cx] = (char)(b > 9 ? b + 0x37 + 0x20 : b + 0x30);
+            }
+            return new string(c);
+        }
+    }
 }

Streetwriters.Common/Extensions/WampRealmExtensions.cs

@@ -1,42 +1,66 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-using Microsoft.AspNetCore.Builder;
-using Streetwriters.Common.Interfaces;
-using WampSharp.AspNetCore.WebSockets.Server;
-using WampSharp.Binding;
-using WampSharp.V2;
-using WampSharp.V2.Realm;
-
-namespace Streetwriters.Common.Extensions
-{
-    public static class WampRealmExtensions
-    {
-        public static IDisposable Subscribe<T>(this IWampHostedRealm realm, string topicName, Action<T> onNext)
-        {
-            return realm.Services.GetSubject<T>(topicName).Subscribe<T>(onNext);
-        }
-
-        public static IDisposable Subscribe<T>(this IWampHostedRealm realm, string topicName, IMessageHandler<T> handler)
-        {
-            return realm.Services.GetSubject<T>(topicName).Subscribe<T>(async (message) => await handler.Process(message));
-        }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Reactive.Disposables;
+using System.Threading;
+using Microsoft.AspNetCore.Builder;
+using Streetwriters.Common.Interfaces;
+using WampSharp.AspNetCore.WebSockets.Server;
+using WampSharp.Binding;
+using WampSharp.V2;
+using WampSharp.V2.Realm;
+
+namespace Streetwriters.Common.Extensions
+{
+    public static class WampRealmExtensions
+    {
+        public static IDisposable Subscribe<T>(this IWampHostedRealm realm, string topicName, Action<T> onNext)
+        {
+            return realm.Services.GetSubject<T>(topicName).Subscribe<T>(onNext);
+        }
+
+        public static IDisposable Subscribe<T>(this IWampHostedRealm realm, string topicName, IMessageHandler<T> handler)
+        {
+            return realm.Services.GetSubject<T>(topicName).Subscribe<T>(async (message) => await handler.Process(message));
+        }
+
+        public static IDisposable SubscribeWithSemaphore<T>(this IWampHostedRealm realm, string topicName, IMessageHandler<T> handler)
+        {
+            var semaphore = new SemaphoreSlim(1, 1);
+            var subscriber = realm.Services.GetSubject<T>(topicName).Subscribe<T>(async (message) =>
+            {
+                await semaphore.WaitAsync();
+                try
+                {
+                    await handler.Process(message);
+                }
+                finally
+                {
+                    semaphore.Release();
+                }
+            });
+            return Disposable.Create(() =>
+            {
+                subscriber.Dispose();
+                semaphore.Dispose();
+            });
+        }
+    }
 }

Streetwriters.Common/Helpers/FeatureAuthorizationHelper.cs

@@ -0,0 +1,62 @@
+using System.IO;
+using System.Security.Claims;
+using System.Threading.Tasks;
+using Streetwriters.Common.Enums;
+using Streetwriters.Common.Interfaces;
+using WebMarkupMin.Core;
+using WebMarkupMin.Core.Loggers;
+
+namespace Streetwriters.Common.Helpers
+{
+    public enum Features
+    {
+        SMS_2FA,
+        MONOGRAPH_ANALYTICS
+    }
+
+    public static class FeatureAuthorizationHelper
+    {
+        private static SubscriptionPlan? GetUserSubscriptionPlan(string clientId, ClaimsPrincipal user)
+        {
+            var claimKey = $"{clientId}:status";
+            var status = user.FindFirstValue(claimKey);
+            switch (status)
+            {
+                case "free":
+                    return SubscriptionPlan.FREE;
+                case "believer":
+                    return SubscriptionPlan.BELIEVER;
+                case "education":
+                    return SubscriptionPlan.EDUCATION;
+                case "essential":
+                    return SubscriptionPlan.ESSENTIAL;
+                case "pro":
+                    return SubscriptionPlan.PRO;
+                case "legacy_pro":
+                    return SubscriptionPlan.LEGACY_PRO;
+                default:
+                    return null;
+            }
+        }
+
+        public static bool IsFeatureAllowed(Features feature, string clientId, ClaimsPrincipal user)
+        {
+            if (Constants.IS_SELF_HOSTED)
+                return true;
+
+            var status = GetUserSubscriptionPlan(clientId, user);
+
+            switch (feature)
+            {
+                case Features.SMS_2FA:
+                case Features.MONOGRAPH_ANALYTICS:
+                    return status == SubscriptionPlan.LEGACY_PRO ||
+                            status == SubscriptionPlan.PRO ||
+                            status == SubscriptionPlan.EDUCATION ||
+                            status == SubscriptionPlan.BELIEVER;
+                default:
+                    return false;
+            }
+        }
+    }
+}

Streetwriters.Common/Helpers/HtmlHelper.cs

@@ -0,0 +1,23 @@
+using System.IO;
+using WebMarkupMin.Core;
+using WebMarkupMin.Core.Loggers;
+
+namespace Streetwriters.Common.Helpers
+{
+    public static class HtmlHelper
+    {
+        public static string ReadMinifiedHtmlFile(string path)
+        {
+            var settings = new HtmlMinificationSettings()
+            {
+                WhitespaceMinificationMode = WhitespaceMinificationMode.Medium,
+            };
+            var cssMinifier = new KristensenCssMinifier();
+            var jsMinifier = new CrockfordJsMinifier();
+
+            var minifier = new HtmlMinifier(settings, cssMinifier, jsMinifier, new NullLogger());
+
+            return minifier.Minify(File.ReadAllText(path), false).MinifiedContent;
+        }
+    }
+}

Streetwriters.Common/Helpers/WampHelper.cs

@@ -17,6 +17,7 @@ You should have received a copy of the Affero GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+using System.Collections.Generic;
 using System.Reactive.Subjects;
 using System.Threading.Tasks;
 using Streetwriters.Common.Messages;
@@ -27,15 +28,28 @@ namespace Streetwriters.Common.Helpers
 {
     public class WampHelper
     {
-        public static async Task<IWampRealmProxy> OpenWampChannelAsync(string server, string realmName)
+        public static async Task<IWampChannel> OpenWampChannelAsync(string server, string realmName)
         {
             DefaultWampChannelFactory channelFactory = new();
 
             IWampChannel channel = channelFactory.CreateJsonChannel(server, realmName);
 
-            await channel.Open();
+            var isConnected = false;
+            while (!isConnected)
+            {
+                try
+                {
+                    await channel.Open();
+                    isConnected = true;
+                }
+                catch
+                {
+                    await Task.Delay(5000);
+                    continue;
+                }
+            }
 
-            return channel.RealmProxy;
+            return channel;
         }
 
         public static void PublishMessage<T>(IWampRealmProxy realm, string topicName, T message)
@@ -43,5 +57,12 @@ namespace Streetwriters.Common.Helpers
             var subject = realm.Services.GetSubject<T>(topicName);
             subject.OnNext(message);
         }
+
+        public static void PublishMessages<T>(IWampRealmProxy realm, string topicName, IEnumerable<T> messages)
+        {
+            var subject = realm.Services.GetSubject<T>(topicName);
+            foreach (var message in messages)
+                subject.OnNext(message);
+        }
     }
 }

Streetwriters.Common/Interfaces/IClient.cs

@@ -1,38 +1,38 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-using System.Threading.Tasks;
-using Streetwriters.Common.Enums;
-
-namespace Streetwriters.Common.Interfaces
-{
-    public interface IClient
-    {
-        string Id { get; set; }
-        string Name { get; set; }
-        ApplicationType Type { get; set; }
-        ApplicationType AppId { get; set; }
-        string SenderEmail { get; set; }
-        string SenderName { get; set; }
-        string EmailConfirmedRedirectURL { get; }
-        string AccountRecoveryRedirectURL { get; }
-        Func<string, Task> OnEmailConfirmed { get; set; }
-    }
-}
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System;
+using System.Threading.Tasks;
+using Streetwriters.Common.Enums;
+
+namespace Streetwriters.Common.Interfaces
+{
+    public interface IClient
+    {
+        string Id { get; set; }
+        string Name { get; set; }
+        ApplicationType Type { get; set; }
+        ApplicationType AppId { get; set; }
+        string SenderEmail { get; set; }
+        string SenderName { get; set; }
+        string EmailConfirmedRedirectURL { get; }
+        string AccountRecoveryRedirectURL { get; }
+        Func<string, Task>? OnEmailConfirmed { get; set; }
+    }
+}

Streetwriters.Common/Interfaces/IDocument.cs

@@ -1,29 +1,31 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-namespace Streetwriters.Common.Interfaces
-{
-    public interface IDocument
-    {
-        string Id
-        {
-            get; set;
-        }
-    }
-}
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using MongoDB.Bson;
+
+namespace Streetwriters.Common.Interfaces
+{
+    public interface IDocument
+    {
+        ObjectId Id
+        {
+            get; set;
+        }
+    }
+}

Streetwriters.Common/Interfaces/IEmailSender.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using MimeKit;
+using MimeKit.Cryptography;
+using Streetwriters.Common.Models;
+
+namespace Streetwriters.Common.Interfaces
+{
+    public interface IEmailSender
+    {
+        Task SendEmailAsync(
+            string email,
+            EmailTemplate template,
+            IClient client,
+            GnuPGContext? gpgContext = null,
+            Dictionary<string, byte[]>? attachments = null
+        );
+    }
+}

Streetwriters.Common/Interfaces/IMessageHandler.cs

@@ -1,29 +1,29 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System.Threading.Tasks;
-using Streetwriters.Common.Interfaces;
-
-namespace Streetwriters.Common.Interfaces
-{
-    public interface IMessageHandler<T>
-    {
-        Task Process(T message);
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.Threading.Tasks;
+using Streetwriters.Common.Interfaces;
+
+namespace Streetwriters.Common.Interfaces
+{
+    public interface IMessageHandler<T>
+    {
+        Task Process(T message);
+    }
 }

Streetwriters.Common/Interfaces/IResponse.cs

@@ -1,27 +1,30 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-namespace Streetwriters.Common.Interfaces
-{
-    public interface IResponse
-    {
-        bool Success { get; set; }
-        int StatusCode { get; set; }
-    }
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2023 Streetwriters (Private) Limited
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the Affero GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+Affero GNU General Public License for more details.
+
+You should have received a copy of the Affero GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+using System.Net.Http;
+
+namespace Streetwriters.Common.Interfaces
+{
+    public interface IResponse
+    {
+        bool Success { get; set; }
+        int StatusCode { get; set; }
+        HttpContent? Content { get; set; }
+    }
 }

Streetwriters.Common/Interfaces/ISubscription.cs

@@ -1,41 +0,0 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System.ComponentModel.DataAnnotations;
-using System.Runtime.Serialization;
-using Streetwriters.Common.Attributes;
-using Streetwriters.Common.Converters;
-using Streetwriters.Common.Enums;
-using Streetwriters.Common.Models;
-
-namespace Streetwriters.Common.Interfaces
-{
-    [JsonInterfaceConverter(typeof(InterfaceConverter<ISubscription, Subscription>))]
-    public interface ISubscription : IDocument
-    {
-        string UserId { get; set; }
-        ApplicationType AppId { get; set; }
-        SubscriptionProvider Provider { get; set; }
-        long StartDate { get; set; }
-        long ExpiryDate { get; set; }
-        SubscriptionType Type { get; set; }
-        string OrderId { get; set; }
-        string SubscriptionId { get; set; }
-    }
-}

Streetwriters.Common/Interfaces/IURLAnalyzer.cs

@@ -0,0 +1,13 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using MimeKit;
+using MimeKit.Cryptography;
+using Streetwriters.Common.Models;
+
+namespace Streetwriters.Common.Interfaces
+{
+    public interface IURLAnalyzer
+    {
+        Task<bool> IsURLSafeAsync(string uri);
+    }
+}

Streetwriters.Common/Interfaces/IUserAccountService.cs

@@ -7,7 +7,7 @@ namespace Streetwriters.Common.Interfaces
     public interface IUserAccountService
     {
         [WampProcedure("co.streetwriters.identity.users.get_user")]
-        Task<UserModel> GetUserAsync(string clientId, string userId);
+        Task<UserModel?> GetUserAsync(string clientId, string userId);
         [WampProcedure("co.streetwriters.identity.users.delete_user")]
         Task DeleteUserAsync(string clientId, string userId, string password);
         // [WampProcedure("co.streetwriters.identity.users.create_user")]

Streetwriters.Common/Interfaces/IUserSubscriptionService.cs

@@ -8,6 +8,7 @@ namespace Streetwriters.Common.Interfaces
     public interface IUserSubscriptionService
     {
         [WampProcedure("co.streetwriters.subscriptions.subscriptions.get_user_subscription")]
-        Task<Subscription> GetUserSubscriptionAsync(string clientId, string userId);
+        Task<Subscription?> GetUserSubscriptionAsync(string clientId, string userId);
+        Subscription TransformUserSubscription(Subscription subscription);
     }
 }

Streetwriters.Common/Logger.cs

@@ -1,52 +0,0 @@
-/*
-This file is part of the Notesnook Sync Server project (https://notesnook.com/)
-
-Copyright (C) 2023 Streetwriters (Private) Limited
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the Affero GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-Affero GNU General Public License for more details.
-
-You should have received a copy of the Affero GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-using System;
-using System.IO;
-using System.Threading.Tasks;
-
-namespace Streetwriters.Common
-{
-    public class Slogger<T>
-    {
-        public static Task Info(string scope, params string[] messages)
-        {
-            return Write(Format("info", scope, messages));
-        }
-
-        public static Task Error(string scope, params string[] messages)
-        {
-            return Write(Format("error", scope, messages));
-        }
-        private static string Format(string level, string scope, params string[] messages)
-        {
-            var date = DateTime.UtcNow.ToString("MM-dd-yyyy HH:mm:ss");
-            var messageText = string.Join(" ", messages);
-            return $"[{date}] | {level} | <{scope}> {messageText}";
-        }
-        private static Task Write(string line)
-        {
-            var logDirectory = Path.GetFullPath("./logs");
-            if (!Directory.Exists(logDirectory))
-                Directory.CreateDirectory(logDirectory);
-            var path = Path.Join(logDirectory, typeof(T).FullName + "-" + DateTime.UtcNow.ToString("MM-dd-yyyy") + ".log");
-            return File.AppendAllLinesAsync(path, new string[1] { line });
-        }
-    }
-}