ci: fix workflow

* feat: set up public inbox api server

* feat: add zod validation for raw inbox item

* chore: update encrypted item type && raw inbox item schema

* feat: use symmetric & asymmetric combination for inbox encryption

* chore: improve error handling

* chore: update encrypted item type

* feat: add Dockerfile for Notesnook.Inbox.Api

.github/workflows/publish.yml

@@ -10,8 +10,9 @@
 name: Publish Docker images
 
 on:
-  release:
-    types: [published]
+  push:
+    tags:
+      - "v*"
 
 jobs:
   push_to_registry:

Notesnook.API/Accessors/SyncItemsRepositoryAccessor.cs

@@ -43,6 +43,8 @@ namespace Notesnook.API.Accessors
         public SyncItemsRepository Tags { get; }
         public Repository<UserSettings> UsersSettings { get; }
         public Repository<Monograph> Monographs { get; }
+        public Repository<InboxApiKey> InboxApiKey { get; }
+        public SyncItemsRepository InboxItems { get; }
 
         public SyncItemsRepositoryAccessor(IDbContext dbContext,
 
@@ -70,11 +72,15 @@ namespace Notesnook.API.Accessors
         IMongoCollection<SyncItem> vaults,
         [FromKeyedServices(Collections.TagsKey)]
         IMongoCollection<SyncItem> tags,
+        [FromKeyedServices(Collections.InboxItems)]
+        IMongoCollection<SyncItem> inboxItems,
 
-        Repository<UserSettings> usersSettings, Repository<Monograph> monographs)
+        Repository<UserSettings> usersSettings, Repository<Monograph> monographs,
+        Repository<InboxApiKey> inboxApiKey)
         {
             UsersSettings = usersSettings;
             Monographs = monographs;
+            InboxApiKey = inboxApiKey;
             Notebooks = new SyncItemsRepository(dbContext, notebooks);
             Notes = new SyncItemsRepository(dbContext, notes);
             Contents = new SyncItemsRepository(dbContext, content);
@@ -87,6 +93,7 @@ namespace Notesnook.API.Accessors
             Colors = new SyncItemsRepository(dbContext, colors);
             Vaults = new SyncItemsRepository(dbContext, vaults);
             Tags = new SyncItemsRepository(dbContext, tags);
+            InboxItems = new SyncItemsRepository(dbContext, inboxItems);
         }
     }
 }

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/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

@@ -1,102 +1,102 @@
-/*
-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.Linq;
-using System.Security.Claims;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Authorization.Policy;
-using Microsoft.AspNetCore.Http;
-
-namespace Notesnook.API.Authorization
-{
-    public class SyncRequirement : AuthorizationHandler<SyncRequirement>, IAuthorizationRequirement
-    {
-        private readonly Dictionary<string, string> pathErrorPhraseMap = new()
-        {
-            ["/sync/attachments"] = "use attachments",
-            ["/sync"] = "sync your notes",
-            ["/hubs/sync"] = "sync your notes",
-            ["/hubs/sync/v2"] = "sync your notes",
-            ["/monographs"] = "publish monographs"
-        };
-
-        protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, SyncRequirement requirement)
-        {
-            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())
-                context.Fail(result.AuthorizationFailure.FailureReasons.First());
-            else context.Fail();
-
-            return Task.CompletedTask;
-        }
-
-        public PolicyAuthorizationResult IsAuthorized(ClaimsPrincipal User, PathString requestPath)
-        {
-            var id = User.FindFirstValue("sub");
-
-            if (string.IsNullOrEmpty(id))
-            {
-                var reason = new[]
-                {
-                    new AuthorizationFailureReason(this, "Invalid token.")
-                };
-                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 isEmailVerified = User.HasClaim("verified", "true");
-
-            if (!isEmailVerified)
-            {
-                var phrase = "continue";
-
-                foreach (var item in pathErrorPhraseMap)
-                {
-                    if (requestPath != null && requestPath.StartsWithSegments(item.Key))
-                        phrase = item.Value;
-                }
-
-                var error = $"Please confirm your email to {phrase}.";
-                var reason = new[]
-                {
-                    new AuthorizationFailureReason(this, error)
-                };
-                return PolicyAuthorizationResult.Forbid(AuthorizationFailure.Failed(reason));
-                //  context.Fail(new AuthorizationFailureReason(this, error));
-            }
-
-            if (hasSyncScope && isInAudience && hasRole && isEmailVerified)
-                return PolicyAuthorizationResult.Success(); //(requirement);
-            return PolicyAuthorizationResult.Forbid();
-        }
-
-        public override Task HandleAsync(AuthorizationHandlerContext context)
-        {
-            return this.HandleRequirementAsync(context, this);
-        }
-
-    }
+/*
+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.Linq;
+using System.Security.Claims;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Authorization.Policy;
+using Microsoft.AspNetCore.Http;
+
+namespace Notesnook.API.Authorization
+{
+    public class SyncRequirement : AuthorizationHandler<SyncRequirement>, IAuthorizationRequirement
+    {
+        private readonly Dictionary<string, string> pathErrorPhraseMap = new()
+        {
+            ["/sync/attachments"] = "use attachments",
+            ["/sync"] = "sync your notes",
+            ["/hubs/sync"] = "sync your notes",
+            ["/hubs/sync/v2"] = "sync your notes",
+            ["/monographs"] = "publish monographs"
+        };
+
+        protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, SyncRequirement requirement)
+        {
+            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())
+                context.Fail(result.AuthorizationFailure.FailureReasons.First());
+            else context.Fail();
+
+            return Task.CompletedTask;
+        }
+
+        public PolicyAuthorizationResult IsAuthorized(ClaimsPrincipal? User, PathString requestPath)
+        {
+            var id = User?.FindFirstValue("sub");
+
+            if (string.IsNullOrEmpty(id))
+            {
+                var reason = new[]
+                {
+                    new AuthorizationFailureReason(this, "Invalid token.")
+                };
+                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 isEmailVerified = User.HasClaim("verified", "true");
+
+            if (!isEmailVerified)
+            {
+                var phrase = "continue";
+
+                foreach (var item in pathErrorPhraseMap)
+                {
+                    if (requestPath != null && requestPath.StartsWithSegments(item.Key))
+                        phrase = item.Value;
+                }
+
+                var error = $"Please confirm your email to {phrase}.";
+                var reason = new[]
+                {
+                    new AuthorizationFailureReason(this, error)
+                };
+                return PolicyAuthorizationResult.Forbid(AuthorizationFailure.Failed(reason));
+                //  context.Fail(new AuthorizationFailureReason(this, error));
+            }
+
+            if (hasSyncScope && isInAudience && hasRole && isEmailVerified)
+                return PolicyAuthorizationResult.Success(); //(requirement);
+            return PolicyAuthorizationResult.Forbid();
+        }
+
+        public override Task HandleAsync(AuthorizationHandlerContext context)
+        {
+            return this.HandleRequirementAsync(context, this);
+        }
+
+    }
 }

Notesnook.API/Constants.cs

@@ -14,5 +14,7 @@ namespace Notesnook.API
         public const string TagsKey = "tags";
         public const string ColorsKey = "colors";
         public const string VaultsKey = "vaults";
+        public const string InboxItems = "inbox_items";
+        public const string InboxApiKeysKey = "inbox_api_keys";
     }
 }

Notesnook.API/Controllers/InboxController.cs

@@ -0,0 +1,201 @@
+/*
+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.Mvc;
+using MongoDB.Bson;
+using Notesnook.API.Authorization;
+using Notesnook.API.Interfaces;
+using Notesnook.API.Models;
+using Notesnook.API.Repositories;
+using Streetwriters.Common;
+using Streetwriters.Data.Repositories;
+
+namespace Notesnook.API.Controllers
+{
+    [ApiController]
+    [Route("inbox")]
+    public class InboxController : ControllerBase
+    {
+        private readonly Repository<InboxApiKey> InboxApiKey;
+        private readonly Repository<UserSettings> UserSetting;
+        private SyncItemsRepository InboxItems;
+
+        public InboxController(
+            Repository<InboxApiKey> inboxApiKeysRepository,
+            Repository<UserSettings> userSettingsRepository,
+            ISyncItemsRepositoryAccessor syncItemsRepositoryAccessor)
+        {
+            InboxApiKey = inboxApiKeysRepository;
+            UserSetting = userSettingsRepository;
+            InboxItems = syncItemsRepositoryAccessor.InboxItems;
+        }
+
+        [HttpGet("api-keys")]
+        [Authorize(Policy = "Notesnook")]
+        public async Task<IActionResult> GetApiKeysAsync()
+        {
+            var userId = User.FindFirstValue("sub");
+            try
+            {
+                var apiKeys = await InboxApiKey.FindAsync(t => t.UserId == userId);
+                return Ok(apiKeys);
+            }
+            catch (Exception ex)
+            {
+                await Slogger<InboxController>.Error(nameof(GetApiKeysAsync), "Couldn't get inbox api keys.", userId, ex.ToString());
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+
+        [HttpPost("api-keys")]
+        [Authorize(Policy = "Notesnook")]
+        public async Task<IActionResult> CreateApiKeyAsync([FromBody] InboxApiKey request)
+        {
+            var userId = User.FindFirstValue("sub");
+            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 InboxApiKey.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 InboxApiKey.InsertAsync(inboxApiKey);
+                return Ok(inboxApiKey);
+            }
+            catch (Exception ex)
+            {
+                await Slogger<InboxController>.Error(nameof(CreateApiKeyAsync), "Couldn't create inbox api key.", userId, ex.ToString());
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+
+        [HttpDelete("api-keys/{apiKey}")]
+        [Authorize(Policy = "Notesnook")]
+        public async Task<IActionResult> DeleteApiKeyAsync(string apiKey)
+        {
+            var userId = User.FindFirstValue("sub");
+            try
+            {
+                if (string.IsNullOrWhiteSpace(apiKey))
+                {
+                    return BadRequest(new { error = "Api key is required." });
+                }
+
+                await InboxApiKey.DeleteAsync(t => t.UserId == userId && t.Key == apiKey);
+                return Ok(new { message = "Api key deleted successfully." });
+            }
+            catch (Exception ex)
+            {
+                await Slogger<InboxController>.Error(nameof(DeleteApiKeyAsync), "Couldn't delete inbox api key.", userId, ex.ToString());
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+
+        [HttpGet("public-encryption-key")]
+        [Authorize(Policy = InboxApiKeyAuthenticationDefaults.AuthenticationScheme)]
+        public async Task<IActionResult> GetPublicKeyAsync()
+        {
+            var userId = User.FindFirstValue("sub");
+            try
+            {
+                var userSetting = await UserSetting.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)
+            {
+                await Slogger<InboxController>.Error(nameof(GetPublicKeyAsync), "Couldn't get user's inbox's public key.", userId, ex.ToString());
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+
+        [HttpPost("items")]
+        [Authorize(Policy = InboxApiKeyAuthenticationDefaults.AuthenticationScheme)]
+        public async Task<IActionResult> CreateInboxItemAsync([FromBody] InboxSyncItem request)
+        {
+            var userId = User.FindFirstValue("sub");
+            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 InboxItems.InsertAsync(request);
+                return Ok();
+            }
+            catch (Exception ex)
+            {
+                await Slogger<InboxController>.Error(nameof(CreateInboxItemAsync), "Couldn't create inbox item.", userId, ex.ToString());
+                return BadRequest(new { error = ex.Message });
+            }
+        }
+    }
+}

Notesnook.API/Controllers/MonographsController.cs

@@ -23,13 +23,17 @@ using System.Linq;
 using System.Security.Claims;
 using System.Text.Json;
 using System.Threading.Tasks;
+using AngleSharp;
+using AngleSharp.Dom;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using MongoDB.Bson;
 using MongoDB.Driver;
+using Notesnook.API.Authorization;
 using Notesnook.API.Models;
 using Notesnook.API.Services;
 using Streetwriters.Common;
+using Streetwriters.Common.Interfaces;
 using Streetwriters.Common.Messages;
 using Streetwriters.Data.Interfaces;
 using Streetwriters.Data.Repositories;
@@ -39,21 +43,15 @@ namespace Notesnook.API.Controllers
     [ApiController]
     [Route("monographs")]
     [Authorize("Sync")]
-    public class MonographsController : ControllerBase
+    public class MonographsController(Repository<Monograph> monographs, IURLAnalyzer analyzer) : ControllerBase
     {
         const string SVG_PIXEL = "<svg xmlns='http://www.w3.org/2000/svg' width='1' height='1'><circle r='9'/></svg>";
-        private Repository<Monograph> Monographs { get; set; }
-        private readonly IUnitOfWork unit;
         private const int MAX_DOC_SIZE = 15 * 1024 * 1024;
-        public MonographsController(Repository<Monograph> monographs, IUnitOfWork unitOfWork)
-        {
-            Monographs = monographs;
-            unit = unitOfWork;
-        }
 
         private static FilterDefinition<Monograph> CreateMonographFilter(string userId, Monograph monograph)
         {
             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,
@@ -78,7 +76,7 @@ namespace Notesnook.API.Controllers
 
         private async Task<Monograph> FindMonographAsync(string userId, Monograph monograph)
         {
-            var result = await Monographs.Collection.FindAsync(CreateMonographFilter(userId, monograph), new FindOptions<Monograph>
+            var result = await monographs.Collection.FindAsync(CreateMonographFilter(userId, monograph), new FindOptions<Monograph>
             {
                 Limit = 1
             });
@@ -87,7 +85,7 @@ namespace Notesnook.API.Controllers
 
         private async Task<Monograph> FindMonographAsync(string itemId)
         {
-            var result = await Monographs.Collection.FindAsync(CreateMonographFilter(itemId), new FindOptions<Monograph>
+            var result = await monographs.Collection.FindAsync(CreateMonographFilter(itemId), new FindOptions<Monograph>
             {
                 Limit = 1
             });
@@ -95,21 +93,19 @@ namespace Notesnook.API.Controllers
         }
 
         [HttpPost]
-        public async Task<IActionResult> PublishAsync([FromQuery] string deviceId, [FromBody] Monograph monograph)
+        public async Task<IActionResult> PublishAsync([FromQuery] string? deviceId, [FromBody] Monograph monograph)
         {
             try
             {
                 var userId = this.User.FindFirstValue("sub");
+                var jti = this.User.FindFirstValue("jti");
                 if (userId == null) return Unauthorized();
 
                 var existingMonograph = await FindMonographAsync(userId, monograph);
-                if (existingMonograph != null && !existingMonograph.Deleted)
-                {
-                    return base.Conflict("This monograph is already published.");
-                }
+                if (existingMonograph != null && !existingMonograph.Deleted) return await UpdateAsync(deviceId, monograph);
 
                 if (monograph.EncryptedContent == null)
-                    monograph.CompressedContent = monograph.Content.CompressBrotli();
+                    monograph.CompressedContent = (await CleanupContentAsync(monograph.Content)).CompressBrotli();
                 monograph.UserId = userId;
                 monograph.DatePublished = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
 
@@ -118,16 +114,16 @@ namespace Notesnook.API.Controllers
 
                 if (existingMonograph != null)
                 {
-                    monograph.Id = existingMonograph?.Id;
+                    monograph.Id = existingMonograph.Id;
                 }
                 monograph.Deleted = false;
-                await Monographs.Collection.ReplaceOneAsync(
+                await monographs.Collection.ReplaceOneAsync(
                     CreateMonographFilter(userId, monograph),
                     monograph,
                     new ReplaceOptions { IsUpsert = true }
                 );
 
-                await MarkMonographForSyncAsync(monograph.ItemId ?? monograph.Id, deviceId);
+                await MarkMonographForSyncAsync(userId, monograph.ItemId ?? monograph.Id, deviceId, jti);
 
                 return Ok(new
                 {
@@ -143,11 +139,12 @@ namespace Notesnook.API.Controllers
         }
 
         [HttpPatch]
-        public async Task<IActionResult> UpdateAsync([FromQuery] string deviceId, [FromBody] Monograph monograph)
+        public async Task<IActionResult> UpdateAsync([FromQuery] string? deviceId, [FromBody] Monograph monograph)
         {
             try
             {
                 var userId = this.User.FindFirstValue("sub");
+                var jti = this.User.FindFirstValue("jti");
                 if (userId == null) return Unauthorized();
 
                 var existingMonograph = await FindMonographAsync(userId, monograph);
@@ -160,12 +157,12 @@ namespace Notesnook.API.Controllers
                     return base.BadRequest("Monograph is too big. Max allowed size is 15mb.");
 
                 if (monograph.EncryptedContent == null)
-                    monograph.CompressedContent = monograph.Content.CompressBrotli();
+                    monograph.CompressedContent = (await CleanupContentAsync(monograph.Content)).CompressBrotli();
                 else
                     monograph.Content = null;
 
                 monograph.DatePublished = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
-                var result = await Monographs.Collection.UpdateOneAsync(
+                var result = await monographs.Collection.UpdateOneAsync(
                     CreateMonographFilter(userId, monograph),
                     Builders<Monograph>.Update
                     .Set(m => m.DatePublished, monograph.DatePublished)
@@ -177,7 +174,7 @@ namespace Notesnook.API.Controllers
                 );
                 if (!result.IsAcknowledged) return BadRequest();
 
-                await MarkMonographForSyncAsync(monograph.ItemId ?? monograph.Id, deviceId);
+                await MarkMonographForSyncAsync(userId, monograph.ItemId ?? monograph.Id, deviceId, jti);
 
                 return Ok(new
                 {
@@ -198,16 +195,16 @@ namespace Notesnook.API.Controllers
             var userId = this.User.FindFirstValue("sub");
             if (userId == null) return Unauthorized();
 
-            var monographs = (await Monographs.Collection.FindAsync(
+            var userMonographs = (await monographs.Collection.FindAsync(
                     Builders<Monograph>.Filter.And(
                         Builders<Monograph>.Filter.Eq("UserId", userId),
-                        Builders<Monograph>.Filter.Eq("Deleted", false)
+                        Builders<Monograph>.Filter.Ne("Deleted", true)
                     )
                , new FindOptions<Monograph, ObjectWithId>
                {
                    Projection = Builders<Monograph>.Projection.Include("_id").Include("ItemId"),
                })).ToEnumerable();
-            return Ok(monographs.Select((m) => m.ItemId ?? m.Id));
+            return Ok(userMonographs.Select((m) => m.ItemId ?? m.Id));
         }
 
         [HttpGet("{id}")]
@@ -225,8 +222,8 @@ namespace Notesnook.API.Controllers
             }
 
             if (monograph.EncryptedContent == null)
-                monograph.Content = monograph.CompressedContent.DecompressBrotli();
-            if (monograph.ItemId == null) monograph.ItemId = monograph.Id;
+                monograph.Content = monograph.CompressedContent?.DecompressBrotli();
+            monograph.ItemId ??= monograph.Id;
             return Ok(monograph);
         }
 
@@ -239,38 +236,36 @@ namespace Notesnook.API.Controllers
 
             if (monograph.SelfDestruct)
             {
-                var userId = this.User.FindFirstValue("sub");
-                await Monographs.Collection.ReplaceOneAsync(
-                    CreateMonographFilter(userId, monograph),
+                await monographs.Collection.ReplaceOneAsync(
+                    CreateMonographFilter(monograph.UserId, monograph),
                     new Monograph
                     {
                         ItemId = id,
                         Id = monograph.Id,
-                        Deleted = true
+                        Deleted = true,
+                        UserId = monograph.UserId
                     }
                 );
 
-                await MarkMonographForSyncAsync(id);
+                await MarkMonographForSyncAsync(monograph.UserId, id);
             }
 
             return Content(SVG_PIXEL, "image/svg+xml");
         }
 
         [HttpDelete("{id}")]
-        public async Task<IActionResult> DeleteAsync([FromQuery] string deviceId, [FromRoute] string id)
+        public async Task<IActionResult> DeleteAsync([FromQuery] string? deviceId, [FromRoute] string id)
         {
+            var userId = this.User.FindFirstValue("sub");
+            if (userId is null) return Unauthorized();
+
             var monograph = await FindMonographAsync(id);
             if (monograph == null || monograph.Deleted)
-            {
-                return NotFound(new
-                {
-                    error = "invalid_id",
-                    error_description = $"No such monograph found."
-                });
-            }
+                return Ok();
 
-            var userId = this.User.FindFirstValue("sub");
-            await Monographs.Collection.ReplaceOneAsync(
+            var jti = this.User.FindFirstValue("jti");
+
+            await monographs.Collection.ReplaceOneAsync(
                 CreateMonographFilter(userId, monograph),
                 new Monograph
                 {
@@ -281,33 +276,27 @@ namespace Notesnook.API.Controllers
                 }
             );
 
-            await MarkMonographForSyncAsync(id, deviceId);
+            await MarkMonographForSyncAsync(userId, id, deviceId, jti);
 
             return Ok();
         }
 
-        private async Task MarkMonographForSyncAsync(string monographId, string deviceId)
+        private static async Task MarkMonographForSyncAsync(string userId, string monographId, string? deviceId, string? jti)
         {
             if (deviceId == null) return;
-            var userId = this.User.FindFirstValue("sub");
 
             new SyncDeviceService(new SyncDevice(userId, deviceId)).AddIdsToOtherDevices([$"{monographId}:monograph"]);
-            await SendTriggerSyncEventAsync();
+            await SendTriggerSyncEventAsync(userId, jti);
         }
 
-        private async Task MarkMonographForSyncAsync(string monographId)
+        private static async Task MarkMonographForSyncAsync(string userId, string monographId)
         {
-            var userId = this.User.FindFirstValue("sub");
-
             new SyncDeviceService(new SyncDevice(userId, string.Empty)).AddIdsToAllDevices([$"{monographId}:monograph"]);
-            await SendTriggerSyncEventAsync(sendToAllDevices: true);
+            await SendTriggerSyncEventAsync(userId, sendToAllDevices: true);
         }
 
-        private async Task SendTriggerSyncEventAsync(bool sendToAllDevices = false)
+        private static async Task SendTriggerSyncEventAsync(string userId, string? jti = null, bool sendToAllDevices = false)
         {
-            var userId = this.User.FindFirstValue("sub");
-            var jti = this.User.FindFirstValue("jti");
-
             await WampServers.MessengerServer.PublishMessageAsync(MessengerServerTopics.SendSSETopic, new SendSSEMessage
             {
                 OriginTokenId = sendToAllDevices ? null : jti,
@@ -319,5 +308,50 @@ namespace Notesnook.API.Controllers
                 }
             });
         }
+
+        private async Task<string> CleanupContentAsync(string content)
+        {
+            try
+            {
+                var json = JsonSerializer.Deserialize<MonographContent>(content);
+                var html = json.Data;
+                if (!Constants.IS_SELF_HOSTED && !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,iframe,img,object,svg,button,link"))
+                    {
+                        element.Remove();
+                    }
+                    html = document.ToHtml();
+                }
+
+                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)) element.RemoveAttribute("href");
+                    }
+                    html = document.ToHtml();
+                }
+
+                return JsonSerializer.Serialize<MonographContent>(new MonographContent
+                {
+                    Type = json.Type,
+                    Data = html
+                });
+            }
+            catch (Exception ex)
+            {
+                await Slogger<MonographsController>.Error("CleanupContentAsync", ex.ToString());
+                return content;
+            }
+        }
     }
 }

Notesnook.API/Controllers/S3Controller.cs

@@ -24,6 +24,12 @@ using System.Threading.Tasks;
 using System.Security.Claims;
 using Notesnook.API.Interfaces;
 using System;
+using System.Net.Http;
+using Streetwriters.Common.Extensions;
+using Streetwriters.Common.Models;
+using Notesnook.API.Helpers;
+using Streetwriters.Common;
+using Streetwriters.Common.Interfaces;
 using Notesnook.API.Models;
 
 namespace Notesnook.API.Controllers
@@ -31,28 +37,65 @@ namespace Notesnook.API.Controllers
     [ApiController]
     [Route("s3")]
     [ResponseCache(NoStore = true, Location = ResponseCacheLocation.None)]
+    [Authorize("Sync")]
     public class S3Controller : ControllerBase
     {
+        private ISyncItemsRepositoryAccessor Repositories { get; }
         private IS3Service S3Service { get; set; }
-        public S3Controller(IS3Service s3Service)
+        public S3Controller(IS3Service s3Service, ISyncItemsRepositoryAccessor syncItemsRepositoryAccessor)
         {
             S3Service = s3Service;
+            Repositories = syncItemsRepositoryAccessor;
         }
 
         [HttpPut]
-        [Authorize("Pro")]
-        public IActionResult Upload([FromQuery] string name)
+        public async Task<IActionResult> Upload([FromQuery] string name)
         {
             var userId = this.User.FindFirstValue("sub");
+
+            if (!HttpContext.Request.Headers.ContentLength.HasValue) return BadRequest(new { error = "No Content-Length header found." });
+
+            long fileSize = HttpContext.Request.Headers.ContentLength.Value;
+            if (fileSize == 0)
+            {
+                var uploadUrl = S3Service.GetUploadObjectUrl(userId, name);
+                if (uploadUrl == null) return BadRequest(new { error = "Could not create signed url." });
+                return Ok(uploadUrl);
+            }
+
+            var subscriptionService = await WampServers.SubscriptionServer.GetServiceAsync<IUserSubscriptionService>(SubscriptionServerTopics.UserSubscriptionServiceTopic);
+            var subscription = await subscriptionService.GetUserSubscriptionAsync(Clients.Notesnook.Id, userId);
+            if (subscription is null) return BadRequest(new { error = "User subscription not found." });
+
+            if (StorageHelper.IsFileSizeExceeded(subscription, fileSize))
+            {
+                return BadRequest(new { error = "Max file size exceeded." });
+            }
+
+            var userSettings = await Repositories.UsersSettings.FindOneAsync((u) => u.UserId == userId);
+            userSettings.StorageLimit ??= new Limit { Value = 0, UpdatedAt = 0 };
+            userSettings.StorageLimit.Value += fileSize;
+            if (StorageHelper.IsStorageLimitReached(subscription, userSettings.StorageLimit))
+                return BadRequest(new { error = "Storage limit exceeded." });
+
             var url = S3Service.GetUploadObjectUrl(userId, name);
-            if (url == null) return BadRequest("Could not create signed url.");
-            return Ok(url);
+            if (url == null) return BadRequest(new { error = "Could not create signed url." });
+
+            var httpClient = new HttpClient();
+            var content = new StreamContent(HttpContext.Request.BodyReader.AsStream());
+            content.Headers.ContentLength = Request.ContentLength;
+            var response = await httpClient.SendRequestAsync<Response>(url, null, HttpMethod.Put, content);
+            if (!response.Success) return BadRequest(await response.Content.ReadAsStringAsync());
+
+            userSettings.StorageLimit.UpdatedAt = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
+            await Repositories.UsersSettings.UpsertAsync(userSettings, (u) => u.UserId == userId);
+
+            return Ok(response);
         }
 
 
         [HttpGet("multipart")]
-        [Authorize("Pro")]
-        public async Task<IActionResult> MultipartUpload([FromQuery] string name, [FromQuery] int parts, [FromQuery] string uploadId)
+        public async Task<IActionResult> MultipartUpload([FromQuery] string name, [FromQuery] int parts, [FromQuery] string? uploadId)
         {
             var userId = this.User.FindFirstValue("sub");
             try
@@ -64,7 +107,6 @@ namespace Notesnook.API.Controllers
         }
 
         [HttpDelete("multipart")]
-        [Authorize("Pro")]
         public async Task<IActionResult> AbortMultipartUpload([FromQuery] string name, [FromQuery] string uploadId)
         {
             var userId = this.User.FindFirstValue("sub");
@@ -77,7 +119,6 @@ namespace Notesnook.API.Controllers
         }
 
         [HttpPost("multipart")]
-        [Authorize("Pro")]
         public async Task<IActionResult> CompleteMultipartUpload([FromBody] CompleteMultipartUploadRequestWrapper uploadRequestWrapper)
         {
             var userId = this.User.FindFirstValue("sub");
@@ -90,17 +131,19 @@ namespace Notesnook.API.Controllers
         }
 
         [HttpGet]
-        [Authorize("Sync")]
-        public IActionResult Download([FromQuery] string name)
+        public async Task<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);
+            try
+            {
+                var userId = this.User.FindFirstValue("sub");
+                var url = await S3Service.GetDownloadObjectUrl(userId, name);
+                if (url == null) return BadRequest("Could not create signed url.");
+                return Ok(url);
+            }
+            catch (Exception ex) { return BadRequest(ex.Message); }
         }
 
         [HttpHead]
-        [Authorize("Sync")]
         public async Task<IActionResult> Info([FromQuery] string name)
         {
             var userId = this.User.FindFirstValue("sub");
@@ -110,7 +153,6 @@ namespace Notesnook.API.Controllers
         }
 
         [HttpDelete]
-        [Authorize("Sync")]
         public async Task<IActionResult> DeleteAsync([FromQuery] string name)
         {
             try
@@ -125,4 +167,4 @@ namespace Notesnook.API.Controllers
             }
         }
     }
-}
+}

Notesnook.API/Controllers/UsersController.cs

@@ -58,7 +58,7 @@ namespace Notesnook.API.Controllers
             try
             {
                 UserResponse response = await UserService.GetUserAsync(userId);
-                if (!response.Success) return BadRequest(response);
+                if (!response.Success) return BadRequest();
                 return Ok(response);
             }
             catch (Exception ex)
@@ -69,16 +69,11 @@ namespace Notesnook.API.Controllers
         }
 
         [HttpPatch]
-        public async Task<IActionResult> UpdateUser([FromBody] UserResponse user)
+        public async Task<IActionResult> UpdateUser([FromBody] UserKeys keys)
         {
             var userId = User.FindFirstValue("sub");
             try
             {
-                var keys = new UserKeys
-                {
-                    AttachmentsKey = user.AttachmentsKey,
-                    MonographPasswordsKey = user.MonographPasswordsKey
-                };
                 await UserService.SetUserKeysAsync(userId, keys);
                 return Ok();
             }

Notesnook.API/Extensions/AuthorizationResultTransformer.cs

@@ -17,8 +17,11 @@ 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;
@@ -42,12 +45,9 @@ namespace Notesnook.API.Extensions
             AuthorizationPolicy authorizationPolicy,
             PolicyAuthorizationResult policyAuthorizationResult)
         {
-            var isWebsocket = httpContext.Request.Headers.Upgrade == "websocket";
-
-            if (!isWebsocket && policyAuthorizationResult.Forbidden && policyAuthorizationResult.AuthorizationFailure != null)
+            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;
@@ -55,17 +55,8 @@ namespace Notesnook.API.Extensions
                     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);
             }
+            await _handler.HandleAsync(requestDelegate, httpContext, authorizationPolicy, policyAuthorizationResult);
         }
     }
 }

Notesnook.API/Extensions/ClaimsPrincipalExtensions.cs

@@ -0,0 +1,14 @@
+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", "premium", "premium_canceled"];
+        public static bool IsUserSubscribed(this ClaimsPrincipal user)
+         => user.Claims.Any((c) => c.Type == "notesnook:status" && SUBSCRIBED_CLAIMS.Contains(c.Value));
+    }
+}

Notesnook.API/Helpers/StorageHelper.cs

@@ -0,0 +1,68 @@
+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, Limit limit)
+        {
+            var storageLimit = GetStorageLimitForPlan(subscription);
+            if (storageLimit == -1) return false;
+            return limit.Value > storageLimit;
+        }
+
+        public static bool IsFileSizeExceeded(Subscription subscription, long fileSize)
+        {
+            var maxFileSize = MAX_FILE_SIZE[subscription.Plan];
+            return fileSize > maxFileSize;
+        }
+
+        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/SyncV2Hub.cs

@@ -18,9 +18,11 @@ 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.Linq;
+using System.Linq.Expressions;
 using System.Security.Claims;
 using System.Text.Json.Serialization;
 using System.Threading.Tasks;
@@ -40,16 +42,16 @@ namespace Notesnook.API.Hubs
     {
         Task<bool> SendItems(SyncTransferItemV2 transferItem);
         Task<bool> SendVaultKey(EncryptedData vaultKey);
-        Task<bool> SendMonographs(IEnumerable<Monograph> monographs);
+        Task<bool> SendMonographs(IEnumerable<MonographMetadata> monographs);
         Task PushCompleted();
     }
 
-    [Authorize("Sync")]
+    [Authorize]
     public class SyncV2Hub : Hub<ISyncV2HubClient>
     {
         private ISyncItemsRepositoryAccessor Repositories { get; }
         private readonly IUnitOfWork unit;
-        private readonly string[] CollectionKeys = [
+        private static readonly string[] CollectionKeys = [
             "settingitem",
             "attachment",
             "note",
@@ -62,11 +64,40 @@ 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, string[], bool, int, Task<IAsyncCursor<SyncItem>>>[] Collections;
 
         public SyncV2Hub(ISyncItemsRepositoryAccessor syncItemsRepositoryAccessor, IUnitOfWork unitOfWork)
         {
             Repositories = syncItemsRepositoryAccessor;
             unit = unitOfWork;
+
+            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()
@@ -74,65 +105,26 @@ 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;
@@ -142,29 +134,28 @@ namespace Notesnook.API.Hubs
             }
             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)
+        private async IAsyncEnumerable<SyncTransferItemV2> PrepareChunks(string userId, string[] ids, int size, bool resetSync, long maxBytes)
         {
             var itemsProcessed = 0;
-            for (int i = 0; i < collections.Length; i++)
+            for (int i = 0; i < Collections.Length; i++)
             {
-                var type = types[i];
+                var type = CollectionKeys[i];
 
                 var filteredIds = ids.Where((id) => id.EndsWith($":{type}")).Select((id) => id.Split(":")[0]).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;
@@ -206,8 +197,17 @@ 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);
+        }
+
+        public async Task<SyncV2Metadata> RequestFetchV2(string deviceId)
+        {
+            return await HandleRequestFetch(deviceId, true);
+        }
+
+        private async Task<SyncV2Metadata> HandleRequestFetch(string deviceId, bool includeMonographs)
+        {
+            var userId = Context.User?.FindFirstValue("sub") ?? throw new HubException("Please login to sync.");
 
             SyncEventCounterSource.Log.FetchV2();
 
@@ -223,27 +223,12 @@ namespace Notesnook.API.Hubs
                 !isResetSync)
                 return new SyncV2Metadata { Synced = true };
 
-            var stopwatch = new Stopwatch();
-            stopwatch.Start();
+            var stopwatch = Stopwatch.StartNew();
             try
             {
                 string[] ids = deviceService.FetchUnsyncedIds();
 
                 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,
@@ -270,14 +255,35 @@ namespace Notesnook.API.Hubs
                     }
                 }
 
-                var unsyncedMonographs = ids.Where((id) => id.EndsWith(":monograph")).ToHashSet();
-                var unsyncedMonographIds = unsyncedMonographs.Select((id) => id.Split(":")[0]).ToArray();
-                var userMonographs = isResetSync
-                    ? await Repositories.Monographs.FindAsync(m => m.UserId == userId)
-                    : await Repositories.Monographs.FindAsync(m => m.UserId == userId && unsyncedMonographIds.Contains(m.ItemId));
+                if (includeMonographs)
+                {
+                    var isSyncingMonographsForFirstTime = !device.HasInitialMonographsSync;
+                    var unsyncedMonographs = ids.Where((id) => id.EndsWith(":monograph")).ToHashSet();
+                    var unsyncedMonographIds = unsyncedMonographs.Select((id) => id.Split(":")[0]).ToArray();
+                    FilterDefinition<Monograph> filter = isResetSync || isSyncingMonographsForFirstTime
+                        ? Builders<Monograph>.Filter.Eq("UserId", userId)
+                        : Builders<Monograph>.Filter.And(
+                            Builders<Monograph>.Filter.Eq("UserId", userId),
+                            Builders<Monograph>.Filter.Or(
+                                Builders<Monograph>.Filter.In("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.Any() && !await Clients.Caller.SendMonographs(userMonographs).WaitAsync(TimeSpan.FromMinutes(10)))
-                    throw new HubException("Client rejected monographs.");
+                    if (userMonographs.Count > 0 && !await Clients.Caller.SendMonographs(userMonographs).WaitAsync(TimeSpan.FromMinutes(10)))
+                        throw new HubException("Client rejected monographs.");
+
+                    device.HasInitialMonographsSync = true;
+                }
 
                 deviceService.Reset();
 
@@ -288,7 +294,6 @@ namespace Notesnook.API.Hubs
             }
             finally
             {
-                stopwatch.Stop();
                 SyncEventCounterSource.Log.RecordFetchDuration(stopwatch.ElapsedMilliseconds);
             }
         }
@@ -301,24 +306,4 @@ namespace Notesnook.API.Hubs
         [JsonPropertyName("synced")]
         public bool Synced { get; set; }
     }
-
-    [MessagePack.MessagePackObject]
-    public struct SyncV2TransferItem
-    {
-        [MessagePack.Key("items")]
-        [JsonPropertyName("items")]
-        public IEnumerable<SyncItem> Items { get; set; }
-
-        [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; }
-    }
 }

Notesnook.API/Interfaces/IS3Service.cs

@@ -1,40 +1,40 @@
-/*
-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 Amazon.S3.Model;
-using Notesnook.API.Models;
-using Notesnook.API.Models.Responses;
-using Streetwriters.Common.Interfaces;
-
-namespace Notesnook.API.Interfaces
-{
-    public interface IS3Service
-    {
-        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 AbortMultipartUploadAsync(string userId, string name, string uploadId);
-        Task CompleteMultipartUploadAsync(string userId, CompleteMultipartUploadRequest uploadRequest);
-    }
+/*
+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 Amazon.S3.Model;
+using Notesnook.API.Models;
+using Notesnook.API.Models.Responses;
+using Streetwriters.Common.Interfaces;
+
+namespace Notesnook.API.Interfaces
+{
+    public interface IS3Service
+    {
+        Task DeleteObjectAsync(string userId, string name);
+        Task DeleteDirectoryAsync(string userId);
+        Task<long> GetObjectSizeAsync(string userId, string name);
+        string? GetUploadObjectUrl(string userId, string name);
+        Task<string?> GetDownloadObjectUrl(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

@@ -38,7 +38,9 @@ namespace Notesnook.API.Interfaces
         SyncItemsRepository Colors { get; }
         SyncItemsRepository Vaults { get; }
         SyncItemsRepository Tags { get; }
+        SyncItemsRepository InboxItems { get; }
         Repository<UserSettings> UsersSettings { get; }
         Repository<Monograph> Monographs { get; }
+        Repository<InboxApiKey> InboxApiKey { get; }
     }
 }

Notesnook.API/Jobs/DeviceCleanupJob.cs

@@ -0,0 +1,64 @@
+using System;
+using System.IO;
+using System.Threading.Tasks;
+using Quartz;
+
+namespace Notesnook.API.Jobs
+{
+    public class DeviceCleanupJob : IJob
+    {
+        public async Task Execute(IJobExecutionContext context)
+        {
+            ParallelOptions parallelOptions = new()
+            {
+                MaxDegreeOfParallelism = 100,
+                CancellationToken = context.CancellationToken,
+            };
+            Parallel.ForEach(Directory.EnumerateDirectories("sync"), parallelOptions, (userDir, ct) =>
+            {
+                foreach (var device in Directory.EnumerateDirectories(userDir))
+                {
+                    string lastAccessFile = Path.Combine(device, "LastAccessTime");
+
+                    try
+                    {
+                        if (!File.Exists(lastAccessFile))
+                        {
+                            Directory.Delete(device, true);
+                            continue;
+                        }
+
+                        string content = File.ReadAllText(lastAccessFile);
+                        if (!long.TryParse(content, out long lastAccessTime) || lastAccessTime <= 0)
+                        {
+                            Directory.Delete(device, true);
+                            continue;
+                        }
+
+                        DateTimeOffset accessTime;
+                        try
+                        {
+                            accessTime = DateTimeOffset.FromUnixTimeMilliseconds(lastAccessTime);
+                        }
+                        catch (Exception)
+                        {
+                            Directory.Delete(device, true);
+                            continue;
+                        }
+
+                        // If the device hasn't been accessed for more than one month, delete it.
+                        if (accessTime.AddMonths(1) < DateTimeOffset.UtcNow)
+                        {
+                            Directory.Delete(device, true);
+                        }
+                    }
+                    catch (Exception ex)
+                    {
+                        // Log the error and continue processing other directories.
+                        Console.Error.WriteLine($"Error processing device '{device}': {ex.Message}");
+                    }
+                }
+            });
+        }
+    }
+}

Notesnook.API/Models/Algorithms.cs

@@ -22,5 +22,6 @@ 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/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; }
+
+        [JsonPropertyName("userId")]
+        public string UserId { get; set; }
+
+        [JsonPropertyName("name")]
+        public string Name { get; set; }
+
+        [JsonPropertyName("key")]
+        public string Key { get; set; }
+
+        [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 +1,70 @@
+/*
+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 EncryptedKey Key
+        {
+            get; set;
+        }
+    }
+
+    [MessagePack.MessagePackObject]
+    public class EncryptedKey
+    {
+        [DataMember(Name = "alg")]
+        [JsonPropertyName("alg")]
+        [MessagePack.Key("alg")]
+        [Required]
+        public string Algorithm
+        {
+            get; set;
+        }
+
+        [DataMember(Name = "cipher")]
+        [JsonPropertyName("cipher")]
+        [MessagePack.Key("cipher")]
+        [Required]
+        public string Cipher
+        {
+            get; set;
+        }
+
+        [JsonPropertyName("length")]
+        [DataMember(Name = "length")]
+        [MessagePack.Key("length")]
+        [Required]
+        public long Length
+        {
+            get; set;
+        }
+    }
+}

Notesnook.API/Models/Monograph.cs

@@ -69,26 +69,26 @@ namespace Notesnook.API.Models
         public string Title { get; set; }
 
         [JsonPropertyName("userId")]
-        public string UserId { get; set; }
+        public string? UserId { get; set; }
 
         [JsonPropertyName("selfDestruct")]
         public bool SelfDestruct { get; set; }
 
         [JsonPropertyName("encryptedContent")]
-        public EncryptedData EncryptedContent { get; set; }
+        public EncryptedData? EncryptedContent { get; set; }
 
         [JsonPropertyName("datePublished")]
         public long DatePublished { get; set; }
 
         [JsonPropertyName("content")]
         [BsonIgnore]
-        public string Content { get; set; }
+        public string? Content { get; set; }
 
         [JsonIgnore]
-        public byte[] CompressedContent { get; set; }
+        public byte[]? CompressedContent { get; set; }
 
         [JsonPropertyName("password")]
-        public EncryptedData Password { get; set; }
+        public EncryptedData? Password { get; set; }
 
         [JsonPropertyName("deleted")]
         public bool Deleted { get; set; }

Notesnook.API/Models/MonographContent.cs

@@ -17,25 +17,19 @@ 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.Text.Json.Serialization;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
 using System.Runtime.Serialization;
-using Streetwriters.Common.Attributes;
-using Streetwriters.Common.Converters;
-using Streetwriters.Common.Enums;
-using Streetwriters.Common.Models;
 
-namespace Streetwriters.Common.Interfaces
+namespace Notesnook.API.Models
 {
-    [JsonInterfaceConverter(typeof(InterfaceConverter<ISubscription, Subscription>))]
-    public interface ISubscription : IDocument
+
+    public class MonographContent
     {
-        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; }
+        [JsonPropertyName("data")]
+        public string Data { get; set; }
+        [JsonPropertyName("type")]
+        public string Type { get; set; }
     }
-}
+}

Notesnook.API/Models/MonographMetadata.cs

@@ -0,0 +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 System.Text.Json.Serialization;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+using System.Runtime.Serialization;
+
+namespace Notesnook.API.Models
+{
+    public class MonographMetadata
+    {
+        [DataMember(Name = "id")]
+        [JsonPropertyName("id")]
+        [MessagePack.Key("id")]
+        public required string ItemId
+        {
+            get; set;
+        }
+
+        [JsonPropertyName("title")]
+        public required 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/Responses/UserResponse.cs

@@ -1,3 +1,4 @@
+using System.Net.Http;
 using System.Text.Json.Serialization;
 using Streetwriters.Common.Interfaces;
 using Streetwriters.Common.Models;
@@ -7,22 +8,30 @@ namespace Notesnook.API.Models.Responses
     public class UserResponse : UserModel, IResponse
     {
         [JsonPropertyName("salt")]
-        public string Salt { get; set; }
+        public string? Salt { get; set; }
 
         [JsonPropertyName("attachmentsKey")]
-        public EncryptedData AttachmentsKey { get; set; }
+        public EncryptedData? AttachmentsKey { get; set; }
 
         [JsonPropertyName("monographPasswordsKey")]
-        public EncryptedData MonographPasswordsKey { get; set; }
+        public EncryptedData? MonographPasswordsKey { get; set; }
+
+        [JsonPropertyName("inboxKeys")]
+        public InboxKeys? InboxKeys { get; set; }
 
         [JsonPropertyName("subscription")]
-        public ISubscription Subscription { get; set; }
+        public Subscription? Subscription { get; set; }
 
-        [JsonPropertyName("profile")]
-        public EncryptedData Profile { 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/SyncItem.cs

@@ -111,7 +111,7 @@ namespace Notesnook.API.Models
         public string Algorithm
         {
             get; set;
-        } = Algorithms.Default;
+        }
     }
 
     public class SyncItemBsonSerializer : SerializerBase<SyncItem>

Notesnook.API/Models/UserKeys.cs

@@ -19,9 +19,16 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 namespace Notesnook.API.Models
 {
-  public class UserKeys
-  {
-    public EncryptedData AttachmentsKey { get; set; }
-    public EncryptedData MonographPasswordsKey { get; set; }
-  }
+    public class UserKeys
+    {
+        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

@@ -23,6 +23,12 @@ using Notesnook.API.Interfaces;
 
 namespace Notesnook.API.Models
 {
+    public class Limit
+    {
+        public long Value { get; set; }
+        public long UpdatedAt { get; set; }
+    }
+
     public class UserSettings : IUserSettings
     {
         public UserSettings()
@@ -32,9 +38,11 @@ namespace Notesnook.API.Models
         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; }
-        public EncryptedData MonographPasswordsKey { 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)]

Notesnook.API/Notesnook.API.csproj

@@ -3,9 +3,11 @@
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <StartupObject>Notesnook.API.Program</StartupObject>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="AngleSharp" Version="1.3.0" />
     <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 +17,11 @@
     <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/Repositories/SyncItemsRepository.cs

@@ -46,7 +46,7 @@ namespace Notesnook.API.Repositories
             this.collectionName = collection.CollectionNamespace.CollectionName;
         }
 
-        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);
@@ -114,6 +114,9 @@ namespace Notesnook.API.Repositories
                 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;
 
@@ -148,6 +151,9 @@ namespace Notesnook.API.Repositories
                     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

@@ -28,9 +28,13 @@ using Amazon.Runtime;
 using Amazon.S3;
 using Amazon.S3.Model;
 using Microsoft.Extensions.Options;
+using Notesnook.API.Helpers;
 using Notesnook.API.Interfaces;
 using Notesnook.API.Models;
 using Streetwriters.Common;
+using Streetwriters.Common.Enums;
+using Streetwriters.Common.Interfaces;
+using Streetwriters.Common.Models;
 
 namespace Notesnook.API.Services
 {
@@ -45,6 +49,7 @@ namespace Notesnook.API.Services
         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 ISyncItemsRepositoryAccessor Repositories { 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
@@ -57,8 +62,9 @@ namespace Notesnook.API.Services
         private AmazonS3Client S3InternalClient { get; }
         private HttpClient httpClient = new HttpClient();
 
-        public S3Service()
+        public S3Service(ISyncItemsRepositoryAccessor syncItemsRepositoryAccessor)
         {
+            Repositories = syncItemsRepositoryAccessor;
             var config = new AmazonS3Config
             {
 #if (DEBUG || STAGING)
@@ -145,31 +151,33 @@ namespace Notesnook.API.Services
 
             var request = new HttpRequestMessage(HttpMethod.Head, url);
             var response = await httpClient.SendAsync(request);
-            const long MAX_SIZE = 513 * 1024 * 1024; // 512 MB
-            if (!Constants.IS_SELF_HOSTED && response.Content.Headers.ContentLength >= MAX_SIZE)
-            {
-                await this.DeleteObjectAsync(userId, name);
-                throw new Exception("File size exceeds the maximum allowed size.");
-            }
             return response.Content.Headers.ContentLength ?? 0;
         }
 
 
-        public string GetUploadObjectUrl(string userId, string name)
+        public string? GetUploadObjectUrl(string userId, string name)
         {
-            var url = this.GetPresignedURL(userId, name, HttpVerb.PUT);
-            if (url == null) return null;
-            return url;
+            return this.GetPresignedURL(userId, name, HttpVerb.PUT);
         }
 
-        public string GetDownloadObjectUrl(string userId, string name)
+        public async Task<string?> GetDownloadObjectUrl(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 = 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.");
@@ -204,18 +212,58 @@ namespace Notesnook.API.Services
             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 GetS3Client(S3ClientMode.INTERNAL).ListPartsAsync(GetBucketName(S3ClientMode.INTERNAL), objectName, uploadId);
+            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 subscriptionService = await WampServers.SubscriptionServer.GetServiceAsync<IUserSubscriptionService>(SubscriptionServerTopics.UserSubscriptionServiceTopic);
+            var subscription = await subscriptionService.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.");
+            }
+
+            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 ??= new Limit { Value = 0, UpdatedAt = 0 };
+            userSettings.StorageLimit.Value += fileSize;
+            if (StorageHelper.IsStorageLimitReached(subscription, userSettings.StorageLimit))
+            {
+                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.");
+
+            userSettings.StorageLimit.UpdatedAt = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
+            await Repositories.UsersSettings.UpsertAsync(userSettings, (u) => u.UserId == userId);
         }
 
-        private string GetPresignedURL(string userId, string name, HttpVerb httpVerb, S3ClientMode mode = S3ClientMode.EXTERNAL)
+        private string? GetPresignedURL(string userId, string name, HttpVerb httpVerb, S3ClientMode mode = S3ClientMode.EXTERNAL)
         {
             var objectName = GetFullObjectName(userId, name);
             if (userId == null || objectName == null) return null;

Notesnook.API/Services/SyncDeviceService.cs

@@ -44,6 +44,16 @@ namespace Notesnook.API.Services
             set => SetMetadata("LastAccessTime", value.ToString());
         }
 
+        /// <summary>
+        /// Indicates if the monographs have been synced for the first time
+        /// ever on a device.
+        /// </summary>
+        public readonly bool HasInitialMonographsSync
+        {
+            get => !string.IsNullOrEmpty(GetMetadata("HasInitialMonographsSync"));
+            set => SetMetadata("HasInitialMonographsSync", value.ToString());
+        }
+
         private static string CreateFilePath(string userId, string? deviceId = null, string? metadataKey = null)
         {
             return Path.Join("sync", userId, deviceId, metadataKey);

Notesnook.API/Services/UserService.cs

@@ -18,13 +18,12 @@ 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 Notesnook.API.Helpers;
 using Notesnook.API.Interfaces;
 using Notesnook.API.Models;
 using Notesnook.API.Models.Responses;
@@ -73,19 +72,22 @@ 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(),
                 });
             }
 
@@ -98,14 +100,15 @@ namespace Notesnook.API.Services
 
             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.
@@ -115,10 +118,18 @@ namespace Notesnook.API.Services
             else
             {
                 var subscriptionService = await WampServers.SubscriptionServer.GetServiceAsync<IUserSubscriptionService>(SubscriptionServerTopics.UserSubscriptionServiceTopic);
-                subscription = await subscriptionService.GetUserSubscriptionAsync(Clients.Notesnook.Id, userId);
+                subscription = await subscriptionService.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
+            if (userSettings.StorageLimit == null || DateTimeOffset.UtcNow.Month > DateTimeOffset.FromUnixTimeMilliseconds(userSettings.StorageLimit.UpdatedAt).Month)
+            {
+                userSettings.StorageLimit ??= new Limit { UpdatedAt = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(), Value = 0 };
+                await Repositories.UsersSettings.UpsertAsync(userSettings, (u) => u.UserId == user.UserId);
+            }
+
             return new UserResponse
             {
                 UserId = user.UserId,
@@ -129,8 +140,11 @@ namespace Notesnook.API.Services
                 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
             };
@@ -148,6 +162,27 @@ namespace Notesnook.API.Services
             {
                 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);
         }
@@ -172,6 +207,7 @@ 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());
@@ -231,6 +267,7 @@ 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;
 
             var userSettings = await Repositories.UsersSettings.FindOneAsync((s) => s.UserId == userId);
@@ -238,6 +275,7 @@ namespace Notesnook.API.Services
             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

@@ -48,15 +48,19 @@ 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;
@@ -108,12 +112,11 @@ 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");
@@ -148,7 +151,11 @@ namespace Notesnook.API
                 options.SaveToken = true;
                 options.EnableCaching = true;
                 options.CacheDuration = TimeSpan.FromMinutes(30);
-            });
+            })
+            .AddScheme<InboxApiKeyAuthenticationSchemeOptions, InboxApiKeyAuthenticationHandler>(
+                InboxApiKeyAuthenticationDefaults.AuthenticationScheme,
+                options => { }
+            );
 
             // Serializer.RegisterSerializer(new SyncItemBsonSerializer());
             if (!BsonClassMap.IsClassMapRegistered(typeof(UserSettings)))
@@ -165,7 +172,8 @@ namespace Notesnook.API
 
             services.AddRepository<UserSettings>("user_settings", "notesnook")
                     .AddRepository<Monograph>("monographs", "notesnook")
-                    .AddRepository<Announcement>("announcements", "notesnook");
+                    .AddRepository<Announcement>("announcements", "notesnook")
+                    .AddRepository<InboxApiKey>(Collections.InboxApiKeysKey, "notesnook");
 
             services.AddMongoCollection(Collections.SettingsKey)
                     .AddMongoCollection(Collections.AttachmentsKey)
@@ -178,11 +186,14 @@ namespace Notesnook.API
                     .AddMongoCollection(Collections.ShortcutsKey)
                     .AddMongoCollection(Collections.TagsKey)
                     .AddMongoCollection(Collections.ColorsKey)
-                    .AddMongoCollection(Collections.VaultsKey);
+                    .AddMongoCollection(Collections.VaultsKey)
+                    .AddMongoCollection(Collections.InboxItems)
+                    .AddMongoCollection(Collections.InboxApiKeysKey);
 
             services.AddScoped<ISyncItemsRepositoryAccessor, SyncItemsRepositoryAccessor>();
             services.AddScoped<IUserService, UserService>();
             services.AddScoped<IS3Service, S3Service>();
+            services.AddScoped<IURLAnalyzer, URLAnalyzer>();
 
             services.AddControllers();
 
@@ -216,6 +227,24 @@ 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.
@@ -257,7 +286,6 @@ namespace Notesnook.API
 
             app.UseEndpoints(endpoints =>
             {
-                endpoints.MapPrometheusScrapingEndpoint();
                 endpoints.MapControllers();
                 endpoints.MapHealthChecks("/health");
                 endpoints.MapHub<SyncHub>("/hubs/sync", options =>

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 +1,192 @@
+{
+  "lockfileVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "notesnook-inbox-api",
+      "dependencies": {
+        "express": "^5.1.0",
+        "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": {
+    "@types/body-parser": ["@types/body-parser@1.19.6", "", { "dependencies": { "@types/connect": "*", "@types/node": "*" } }, "sha512-HLFeCYgz89uk22N5Qg3dvGvsv46B8GLvKKo1zKG4NybA8U2DiEO3w9lqGg29t/tfLRJpJ6iQxnVw4OnB7MoM9g=="],
+
+    "@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=="],
+
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+    "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 +1,33 @@
+{
+  "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",
+    "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 +1,173 @@
+import express from "express";
+import _sodium, { base64_variants } from "libsodium-wrappers-sumo";
+import { z } from "zod";
+
+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">;
+  iv: string;
+  alg: string;
+  cipher: string;
+  length: number;
+}
+
+function encrypt(rawData: string, publicKey: string): EncryptedInboxItem {
+  try {
+    const password = sodium.crypto_aead_xchacha20poly1305_ietf_keygen();
+    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,
+      password
+    );
+    const inboxPublicKey = sodium.from_base64(
+      publicKey,
+      base64_variants.URLSAFE_NO_PADDING
+    );
+    const encryptedPassword = sodium.crypto_box_seal(password, inboxPublicKey);
+
+    return {
+      v: 1,
+      key: {
+        cipher: sodium.to_base64(
+          encryptedPassword,
+          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,
+    };
+  } 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.post("/inbox", async (req, res) => {
+  try {
+    const apiKey = req.headers["authorization"];
+    if (!apiKey) {
+      return res.status(401).json({ error: "unauthorized" });
+    }
+    if (!req.body.item) {
+      return res.status(400).json({ error: "item is required" });
+    }
+
+    const validationResult = RawInboxItemSchema.safeParse(req.body.item);
+    if (!validationResult.success) {
+      return res.status(400).json({
+        error: "invalid item",
+        details: validationResult.error.issues,
+      });
+    }
+
+    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:", inboxPublicKey);
+
+    const item = validationResult.data;
+    const encryptedItem = encrypt(JSON.stringify(item), inboxPublicKey);
+    console.log("[info] encrypted item:", encryptedItem);
+    await postEncryptedInboxItem(apiKey, encryptedItem);
+    return res.status(200).json({ message: "inbox item posted" });
+  } 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"]
+}

Streetwriters.Common/Constants.cs

@@ -70,6 +70,7 @@ namespace Streetwriters.Common
         public static string SSE_CERT_KEY_PATH => Environment.GetEnvironmentVariable("SSE_CERT_KEY_PATH");
 
         // internal
+        public static string WEBRISK_API_URI => Environment.GetEnvironmentVariable("WEBRISK_API_URI");
         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");

Streetwriters.Common/Enums/SubscriptionPlan.cs

@@ -0,0 +1,33 @@
+/*
+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.Enums
+{
+    public enum SubscriptionPlan
+    {
+        FREE = 0,
+        ESSENTIAL = 1,
+        PRO = 2,
+        BELIEVER = 3,
+        EDUCATION = 4,
+        LEGACY_PRO = 5
+    }
+}

Streetwriters.Common/Enums/SubscriptionStatus.cs

@@ -0,0 +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 SubscriptionStatus
+    {
+        ACTIVE,
+        TRIAL,
+        CANCELED,
+        PAUSED,
+        EXPIRED
+    }
+}

Streetwriters.Common/Enums/SubscriptionType.cs

@@ -1,32 +1,32 @@
-/*
-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 SubscriptionType
-    {
-        BASIC = 0,
-        TRIAL = 1,
-        BETA = 2,
-        PREMIUM = 5,
-        PREMIUM_EXPIRED = 6,
-        PREMIUM_CANCELED = 7,
-        PREMIUM_PAUSED = 8
-    }
+/*
+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 SubscriptionType
+    {
+        BASIC = 0,
+        TRIAL = 1,
+        BETA = 2,
+        PREMIUM = 5,
+        PREMIUM_EXPIRED = 6,
+        PREMIUM_CANCELED = 7,
+        PREMIUM_PAUSED = 8,
+    }
 }

Streetwriters.Common/Extensions/HttpClientExtensions.cs

@@ -37,19 +37,21 @@ namespace Streetwriters.Common.Extensions
                 request.Content = content;
             }
 
-            foreach (var header in headers)
+            if (headers != null)
             {
-                if (header.Key == "Content-Type" || header.Key == "Content-Length")
+                foreach (var header in headers)
                 {
-                    if (request.Content != null)
-                        request.Content.Headers.TryAddWithoutValidation(header.Key, header.Value.AsEnumerable());
-                    continue;
+                    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());
                 }
-                request.Headers.TryAddWithoutValidation(header.Key, header.Value.AsEnumerable());
             }
 
             var response = await httpClient.SendAsync(request);
-            if (response.Content.Headers.ContentLength > 0)
+            if (response.Content.Headers.ContentLength > 0 && response.Content.Headers.ContentType.ToString().Contains("application/json"))
             {
                 var res = await response.Content.ReadFromJsonAsync<T>();
                 res.Success = response.IsSuccessStatusCode;
@@ -58,7 +60,7 @@ namespace Streetwriters.Common.Extensions
             }
             else
             {
-                return new T { Success = response.IsSuccessStatusCode, StatusCode = (int)response.StatusCode };
+                return new T { Success = response.IsSuccessStatusCode, StatusCode = (int)response.StatusCode, Content = response.Content };
             }
         }
 

Streetwriters.Common/Extensions/WampRealmExtensions.cs

@@ -18,6 +18,8 @@ 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;
@@ -38,5 +40,27 @@ namespace Streetwriters.Common.Extensions
         {
             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/WampHelper.cs

@@ -1,47 +1,55 @@
-/*
-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.Reactive.Subjects;
-using System.Threading.Tasks;
-using Streetwriters.Common.Messages;
-using WampSharp.V2;
-using WampSharp.V2.Client;
-
-namespace Streetwriters.Common.Helpers
-{
-    public class WampHelper
-    {
-        public static async Task<IWampRealmProxy> OpenWampChannelAsync(string server, string realmName)
-        {
-            DefaultWampChannelFactory channelFactory = new();
-
-            IWampChannel channel = channelFactory.CreateJsonChannel(server, realmName);
-
-            await channel.Open();
-
-            return channel.RealmProxy;
-        }
-
-        public static void PublishMessage<T>(IWampRealmProxy realm, string topicName, T message)
-        {
-            var subject = realm.Services.GetSubject<T>(topicName);
-            subject.OnNext(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.Collections.Generic;
+using System.Reactive.Subjects;
+using System.Threading.Tasks;
+using Streetwriters.Common.Messages;
+using WampSharp.V2;
+using WampSharp.V2.Client;
+
+namespace Streetwriters.Common.Helpers
+{
+    public class WampHelper
+    {
+        public static async Task<IWampRealmProxy> OpenWampChannelAsync(string server, string realmName)
+        {
+            DefaultWampChannelFactory channelFactory = new();
+
+            IWampChannel channel = channelFactory.CreateJsonChannel(server, realmName);
+
+            await channel.Open();
+
+            return channel.RealmProxy;
+        }
+
+        public static void PublishMessage<T>(IWampRealmProxy realm, string topicName, T message)
+        {
+            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/IResponse.cs

@@ -17,11 +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/>.
 */
 
+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/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/Messages/CreateSubscriptionMessage.cs

@@ -1,63 +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.Runtime.Serialization;
-using System.Text.Json.Serialization;
-using Streetwriters.Common.Enums;
-using Streetwriters.Common.Interfaces;
-
-namespace Streetwriters.Common.Messages
-{
-    public class CreateSubscriptionMessage
-    {
-        [JsonPropertyName("userId")]
-        public string UserId { get; set; }
-
-        [JsonPropertyName("provider")]
-        public SubscriptionProvider Provider { get; set; }
-
-        [JsonPropertyName("appId")]
-        public ApplicationType AppId { get; set; }
-
-        [JsonPropertyName("type")]
-        public SubscriptionType Type { get; set; }
-
-        [JsonPropertyName("start")]
-        public long StartTime { get; set; }
-
-        [JsonPropertyName("expiry")]
-        public long ExpiryTime { get; set; }
-
-        [JsonPropertyName("orderId")]
-        public string OrderId { get; set; }
-
-        [JsonPropertyName("updateURL")]
-        public string UpdateURL { get; set; }
-
-        [JsonPropertyName("cancelURL")]
-        public string CancelURL { get; set; }
-
-        [JsonPropertyName("subscriptionId")]
-        public string SubscriptionId { get; set; }
-
-        [JsonPropertyName("productId")]
-        public string ProductId { get; set; }
-        public bool Extend { 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 Streetwriters.Common.Enums;
+using Streetwriters.Common.Interfaces;
+
+namespace Streetwriters.Common.Messages
+{
+    public class CreateSubscriptionMessage
+    {
+        [JsonPropertyName("userId")]
+        public string UserId { get; set; }
+
+        [JsonPropertyName("provider")]
+        public SubscriptionProvider Provider { get; set; }
+
+        [JsonPropertyName("appId")]
+        public ApplicationType AppId { get; set; }
+
+        [JsonPropertyName("type")]
+        public SubscriptionType Type { get; set; }
+
+        [JsonPropertyName("start")]
+        public long StartTime { get; set; }
+
+        [JsonPropertyName("expiry")]
+        public long ExpiryTime { get; set; }
+
+        [JsonPropertyName("orderId")]
+        public string OrderId { get; set; }
+
+        [JsonPropertyName("updateURL")]
+        public string UpdateURL { get; set; }
+
+        [JsonPropertyName("cancelURL")]
+        public string CancelURL { get; set; }
+
+        [JsonPropertyName("subscriptionId")]
+        public string SubscriptionId { get; set; }
+
+        [JsonPropertyName("productId")]
+        public string ProductId { get; set; }
+
+        [JsonPropertyName("extend")]
+        public bool Extend { get; set; }
+    }
 }

Streetwriters.Common/Messages/CreateSubscriptionMessageV2.cs

@@ -0,0 +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 System;
+using System.Runtime.Serialization;
+using System.Text.Json.Serialization;
+using Streetwriters.Common.Enums;
+using Streetwriters.Common.Interfaces;
+
+namespace Streetwriters.Common.Messages
+{
+    public class CreateSubscriptionMessageV2
+    {
+        [JsonPropertyName("userId")]
+        public string UserId { get; set; }
+
+        [JsonPropertyName("provider")]
+        public SubscriptionProvider Provider { get; set; }
+
+        [JsonPropertyName("appId")]
+        public ApplicationType AppId { get; set; }
+
+        [JsonPropertyName("plan")]
+        public SubscriptionPlan Plan { get; set; }
+
+        [JsonPropertyName("status")]
+        public SubscriptionStatus Status { get; set; }
+
+        [JsonPropertyName("start")]
+        public long StartTime { get; set; }
+
+        [JsonPropertyName("expiry")]
+        public long ExpiryTime { get; set; }
+
+        [JsonPropertyName("orderId")]
+        public string OrderId { get; set; }
+
+        [JsonPropertyName("subscriptionId")]
+        public string SubscriptionId { get; set; }
+
+        [JsonPropertyName("productId")]
+        public string ProductId { get; set; }
+
+        [JsonPropertyName("timestamp")]
+        public long Timestamp { get; set; }
+
+        [JsonPropertyName("trialExpiry")]
+        public long TrialExpiryTime { get; set; }
+
+        [JsonPropertyName("googlePurchaseToken")]
+        public string? GooglePurchaseToken { get; set; }
+    }
+}

Streetwriters.Common/Messages/SendSSEMessage.cs

@@ -43,6 +43,6 @@ namespace Streetwriters.Common.Messages
         public Message Message { get; set; }
 
         [JsonPropertyName("originTokenId")]
-        public string OriginTokenId { get; set; }
+        public string? OriginTokenId { get; set; }
     }
 }

Streetwriters.Common/Models/GetCustomerResponse.cs

@@ -0,0 +1,21 @@
+namespace Streetwriters.Common.Models
+{
+    using System;
+    using System.Collections.Generic;
+
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using System.Globalization;
+
+    public partial class GetCustomerResponse : PaddleResponse
+    {
+        [JsonPropertyName("data")]
+        public PaddleCustomer Customer { get; set; }
+    }
+
+    public class PaddleCustomer
+    {
+        [JsonPropertyName("email")]
+        public string Email { get; set; }
+    }
+}

Streetwriters.Common/Models/GetSubscriptionResponse.cs

@@ -1,31 +1,214 @@
-/*
-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 Streetwriters.Common.Interfaces;
-
-namespace Streetwriters.Common.Models
-{
-    public class SubscriptionResponse : Response
-    {
-        [JsonPropertyName("subscription")]
-        public ISubscription Subscription { get; set; }
-    }
-}
+namespace Streetwriters.Common.Models
+{
+    using System;
+    using System.Collections.Generic;
+
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using System.Globalization;
+
+    public partial class GetSubscriptionResponse : PaddleResponse
+    {
+        [JsonPropertyName("data")]
+        public Data Data { get; set; }
+    }
+
+    public partial class Data
+    {
+        // [JsonPropertyName("id")]
+        // public string Id { get; set; }
+
+        // [JsonPropertyName("status")]
+        // public string Status { get; set; }
+
+        [JsonPropertyName("customer_id")]
+        public string CustomerId { get; set; }
+
+        // [JsonPropertyName("address_id")]
+        // public string AddressId { get; set; }
+
+        // [JsonPropertyName("business_id")]
+        // public object BusinessId { get; set; }
+
+        // [JsonPropertyName("currency_code")]
+        // public string CurrencyCode { get; set; }
+
+        // [JsonPropertyName("created_at")]
+        // public DateTimeOffset CreatedAt { get; set; }
+
+        // [JsonPropertyName("updated_at")]
+        // public DateTimeOffset UpdatedAt { get; set; }
+
+        // [JsonPropertyName("started_at")]
+        // public DateTimeOffset StartedAt { get; set; }
+
+        [JsonPropertyName("first_billed_at")]
+        public DateTimeOffset? FirstBilledAt { get; set; }
+
+        // [JsonPropertyName("next_billed_at")]
+        // public DateTimeOffset NextBilledAt { get; set; }
+
+        // [JsonPropertyName("paused_at")]
+        // public object PausedAt { get; set; }
+
+        // [JsonPropertyName("canceled_at")]
+        // public object CanceledAt { get; set; }
+
+        // [JsonPropertyName("collection_mode")]
+        // public string CollectionMode { get; set; }
+
+        // [JsonPropertyName("billing_details")]
+        // public object BillingDetails { get; set; }
+
+        // [JsonPropertyName("current_billing_period")]
+        // public CurrentBillingPeriod CurrentBillingPeriod { get; set; }
+
+        [JsonPropertyName("billing_cycle")]
+        public BillingCycle BillingCycle { get; set; }
+
+        // [JsonPropertyName("scheduled_change")]
+        // public object ScheduledChange { get; set; }
+
+        // [JsonPropertyName("items")]
+        // public Item[] Items { get; set; }
+
+        // [JsonPropertyName("custom_data")]
+        // public object CustomData { get; set; }
+
+        [JsonPropertyName("management_urls")]
+        public ManagementUrls ManagementUrls { get; set; }
+
+        // [JsonPropertyName("discount")]
+        // public object Discount { get; set; }
+
+        // [JsonPropertyName("import_meta")]
+        // public object ImportMeta { get; set; }
+    }
+
+    public partial class BillingCycle
+    {
+        [JsonPropertyName("frequency")]
+        public long Frequency { get; set; }
+
+        [JsonPropertyName("interval")]
+        public string Interval { get; set; }
+    }
+
+    // public partial class CurrentBillingPeriod
+    // {
+    //     [JsonPropertyName("starts_at")]
+    //     public DateTimeOffset StartsAt { get; set; }
+
+    //     [JsonPropertyName("ends_at")]
+    //     public DateTimeOffset EndsAt { get; set; }
+    // }
+
+    // public partial class Item
+    // {
+    //     [JsonPropertyName("status")]
+    //     public string Status { get; set; }
+
+    //     [JsonPropertyName("quantity")]
+    //     public long Quantity { get; set; }
+
+    //     [JsonPropertyName("recurring")]
+    //     public bool Recurring { get; set; }
+
+    //     [JsonPropertyName("created_at")]
+    //     public DateTimeOffset CreatedAt { get; set; }
+
+    //     [JsonPropertyName("updated_at")]
+    //     public DateTimeOffset UpdatedAt { get; set; }
+
+    //     [JsonPropertyName("previously_billed_at")]
+    //     public DateTimeOffset PreviouslyBilledAt { get; set; }
+
+    //     [JsonPropertyName("next_billed_at")]
+    //     public DateTimeOffset NextBilledAt { get; set; }
+
+    //     [JsonPropertyName("trial_dates")]
+    //     public object TrialDates { get; set; }
+
+    //     [JsonPropertyName("price")]
+    //     public Price Price { get; set; }
+    // }
+
+    // public partial class Price
+    // {
+    //     [JsonPropertyName("id")]
+    //     public string Id { get; set; }
+
+    //     [JsonPropertyName("product_id")]
+    //     public string ProductId { get; set; }
+
+    //     [JsonPropertyName("type")]
+    //     public string Type { get; set; }
+
+    //     [JsonPropertyName("description")]
+    //     public string Description { get; set; }
+
+    //     [JsonPropertyName("name")]
+    //     public string Name { get; set; }
+
+    //     [JsonPropertyName("tax_mode")]
+    //     public string TaxMode { get; set; }
+
+    //     [JsonPropertyName("billing_cycle")]
+    //     public BillingCycle BillingCycle { get; set; }
+
+    //     [JsonPropertyName("trial_period")]
+    //     public object TrialPeriod { get; set; }
+
+    //     [JsonPropertyName("unit_price")]
+    //     public UnitPrice UnitPrice { get; set; }
+
+    //     [JsonPropertyName("unit_price_overrides")]
+    //     public object[] UnitPriceOverrides { get; set; }
+
+    //     [JsonPropertyName("custom_data")]
+    //     public object CustomData { get; set; }
+
+    //     [JsonPropertyName("status")]
+    //     public string Status { get; set; }
+
+    //     [JsonPropertyName("quantity")]
+    //     public Quantity Quantity { get; set; }
+
+    //     [JsonPropertyName("import_meta")]
+    //     public object ImportMeta { get; set; }
+
+    //     [JsonPropertyName("created_at")]
+    //     public DateTimeOffset CreatedAt { get; set; }
+
+    //     [JsonPropertyName("updated_at")]
+    //     public DateTimeOffset UpdatedAt { get; set; }
+    // }
+
+    // public partial class Quantity
+    // {
+    //     [JsonPropertyName("minimum")]
+    //     public long Minimum { get; set; }
+
+    //     [JsonPropertyName("maximum")]
+    //     public long Maximum { get; set; }
+    // }
+
+    // public partial class UnitPrice
+    // {
+    //     [JsonPropertyName("amount")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Amount { get; set; }
+
+    //     [JsonPropertyName("currency_code")]
+    //     public string CurrencyCode { get; set; }
+    // }
+
+    public partial class ManagementUrls
+    {
+        [JsonPropertyName("update_payment_method")]
+        public Uri UpdatePaymentMethod { get; set; }
+
+        [JsonPropertyName("cancel")]
+        public Uri Cancel { get; set; }
+    }
+}

Streetwriters.Common/Models/GetTransactionInvoiceResponse.cs

@@ -0,0 +1,21 @@
+namespace Streetwriters.Common.Models
+{
+    using System;
+    using System.Collections.Generic;
+
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using System.Globalization;
+
+    public class GetTransactionInvoiceResponse : PaddleResponse
+    {
+        [JsonPropertyName("data")]
+        public Invoice Invoice { get; set; }
+    }
+
+    public partial class Invoice
+    {
+        [JsonPropertyName("url")]
+        public string Url { get; set; }
+    }
+}

Streetwriters.Common/Models/GetTransactionResponse.cs

@@ -0,0 +1,15 @@
+namespace Streetwriters.Common.Models
+{
+    using System;
+    using System.Collections.Generic;
+
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using System.Globalization;
+
+    public partial class GetTransactionResponse : PaddleResponse
+    {
+        [JsonPropertyName("data")]
+        public TransactionV2 Transaction { get; set; }
+    }
+}

Streetwriters.Common/Models/ListPaymentsResponse.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Text.Json.Serialization;
+
+namespace Streetwriters.Common.Models
+{
+    public partial class ListPaymentsResponse
+    {
+        [JsonPropertyName("success")]
+        public bool Success { get; set; }
+
+        [JsonPropertyName("response")]
+        public Payment[] Payments { get; set; }
+    }
+
+    public partial class Payment
+    {
+        [JsonPropertyName("id")]
+        public long Id { get; set; }
+
+        [JsonPropertyName("subscription_id")]
+        public long SubscriptionId { get; set; }
+
+        [JsonPropertyName("amount")]
+        public double Amount { get; set; }
+
+        [JsonPropertyName("currency")]
+        public string Currency { get; set; }
+
+        [JsonPropertyName("payout_date")]
+        public string PayoutDate { get; set; }
+
+        [JsonPropertyName("is_paid")]
+        public short IsPaid { get; set; }
+
+        [JsonPropertyName("is_one_off_charge")]
+        public bool IsOneOffCharge { get; set; }
+
+        [JsonPropertyName("receipt_url")]
+        public string ReceiptUrl { get; set; }
+    }
+}

Streetwriters.Common/Models/ListTransactionsResponse.cs

@@ -0,0 +1,77 @@
+namespace Streetwriters.Common.Models
+{
+    using System;
+    using System.Text.Json.Serialization;
+
+    public partial class ListTransactionsResponse
+    {
+        [JsonPropertyName("success")]
+        public bool Success { get; set; }
+
+        [JsonPropertyName("response")]
+        public Transaction[] Transactions { get; set; }
+    }
+
+    public partial class Transaction
+    {
+        [JsonPropertyName("order_id")]
+        public string OrderId { get; set; }
+
+        [JsonPropertyName("checkout_id")]
+        public string CheckoutId { get; set; }
+
+        [JsonPropertyName("amount")]
+        public string Amount { get; set; }
+
+        [JsonPropertyName("currency")]
+        public string Currency { get; set; }
+
+        [JsonPropertyName("status")]
+        public string Status { get; set; }
+
+        [JsonPropertyName("created_at")]
+        public string CreatedAt { get; set; }
+
+        [JsonPropertyName("passthrough")]
+        public object Passthrough { get; set; }
+
+        [JsonPropertyName("product_id")]
+        public long ProductId { get; set; }
+
+        [JsonPropertyName("is_subscription")]
+        public bool IsSubscription { get; set; }
+
+        [JsonPropertyName("is_one_off")]
+        public bool IsOneOff { get; set; }
+
+        [JsonPropertyName("subscription")]
+        public PaddleSubscription Subscription { get; set; }
+
+        [JsonPropertyName("user")]
+        public PaddleTransactionUser User { get; set; }
+
+        [JsonPropertyName("receipt_url")]
+        public string ReceiptUrl { get; set; }
+    }
+
+    public partial class PaddleSubscription
+    {
+        [JsonPropertyName("subscription_id")]
+        public long SubscriptionId { get; set; }
+
+        [JsonPropertyName("status")]
+        public string Status { get; set; }
+    }
+
+    public partial class PaddleTransactionUser
+    {
+        [JsonPropertyName("user_id")]
+        public long UserId { get; set; }
+
+        [JsonPropertyName("email")]
+        public string Email { get; set; }
+
+        [JsonPropertyName("marketing_consent")]
+        public bool MarketingConsent { get; set; }
+    }
+}

Streetwriters.Common/Models/ListTransactionsResponseV2.cs

@@ -0,0 +1,511 @@
+namespace Streetwriters.Common.Models
+{
+    using System;
+    using System.Collections.Generic;
+
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using System.Globalization;
+
+    public partial class ListTransactionsResponseV2 : PaddleResponse
+    {
+        [JsonPropertyName("data")]
+        public TransactionV2[] Transactions { get; set; }
+    }
+
+    public partial class TransactionV2
+    {
+        [JsonPropertyName("id")]
+        public string Id { get; set; }
+
+        [JsonPropertyName("status")]
+        public string Status { get; set; }
+
+        [JsonPropertyName("customer_id")]
+        public string CustomerId { get; set; }
+
+        // [JsonPropertyName("address_id")]
+        // public string AddressId { get; set; }
+
+        // [JsonPropertyName("business_id")]
+        // public object BusinessId { get; set; }
+
+        [JsonPropertyName("custom_data")]
+        public Dictionary<string, string> CustomData { get; set; }
+
+        [JsonPropertyName("origin")]
+        public string Origin { get; set; }
+
+        // [JsonPropertyName("collection_mode")]
+        // public string CollectionMode { get; set; }
+
+        // [JsonPropertyName("subscription_id")]
+        // public string SubscriptionId { get; set; }
+
+        // [JsonPropertyName("invoice_id")]
+        // public string InvoiceId { get; set; }
+
+        // [JsonPropertyName("invoice_number")]
+        // public string InvoiceNumber { get; set; }
+
+        [JsonPropertyName("billing_details")]
+        public BillingDetails BillingDetails { get; set; }
+
+        [JsonPropertyName("billing_period")]
+        public BillingPeriod BillingPeriod { get; set; }
+
+        // [JsonPropertyName("currency_code")]
+        // public string CurrencyCode { get; set; }
+
+        // [JsonPropertyName("discount_id")]
+        // public string DiscountId { get; set; }
+
+        [JsonPropertyName("created_at")]
+        public DateTimeOffset CreatedAt { get; set; }
+
+        // [JsonPropertyName("updated_at")]
+        // public DateTimeOffset UpdatedAt { get; set; }
+
+        [JsonPropertyName("billed_at")]
+        public DateTimeOffset? BilledAt { get; set; }
+
+        [JsonPropertyName("items")]
+        public Item[] Items { get; set; }
+
+        [JsonPropertyName("details")]
+        public Details Details { get; set; }
+
+        // [JsonPropertyName("payments")]
+        // public Payment[] Payments { get; set; }
+
+        // [JsonPropertyName("checkout")]
+        // public Checkout Checkout { get; set; }
+    }
+
+    public partial class BillingDetails
+    {
+        // [JsonPropertyName("enable_checkout")]
+        // public bool EnableCheckout { get; set; }
+
+        [JsonPropertyName("payment_terms")]
+        public PaymentTerms PaymentTerms { get; set; }
+
+        // [JsonPropertyName("purchase_order_number")]
+        // public string PurchaseOrderNumber { get; set; }
+
+        // [JsonPropertyName("additional_information")]
+        // public object AdditionalInformation { get; set; }
+    }
+
+    public partial class PaymentTerms
+    {
+        [JsonPropertyName("interval")]
+        public string Interval { get; set; }
+
+        [JsonPropertyName("frequency")]
+        public long Frequency { get; set; }
+    }
+
+    public partial class BillingPeriod
+    {
+        [JsonPropertyName("starts_at")]
+        public DateTimeOffset StartsAt { get; set; }
+
+        [JsonPropertyName("ends_at")]
+        public DateTimeOffset EndsAt { get; set; }
+    }
+
+    // public partial class Checkout
+    // {
+    //     [JsonPropertyName("url")]
+    //     public Uri Url { get; set; }
+    // }
+
+    public partial class Details
+    {
+        // [JsonPropertyName("tax_rates_used")]
+        // public TaxRatesUsed[] TaxRatesUsed { get; set; }
+
+        [JsonPropertyName("totals")]
+        public Totals Totals { get; set; }
+
+        // [JsonPropertyName("adjusted_totals")]
+        // public AdjustedTotals AdjustedTotals { get; set; }
+
+        // [JsonPropertyName("payout_totals")]
+        // public Dictionary<string, string> PayoutTotals { get; set; }
+
+        // [JsonPropertyName("adjusted_payout_totals")]
+        // public AdjustedTotals AdjustedPayoutTotals { get; set; }
+
+        [JsonPropertyName("line_items")]
+        public LineItem[] LineItems { get; set; }
+    }
+
+    public partial class Totals
+    {
+        [JsonPropertyName("subtotal")]
+        public long Subtotal { get; set; }
+
+        [JsonPropertyName("tax")]
+        public long Tax { get; set; }
+
+        [JsonPropertyName("discount")]
+        public long Discount { get; set; }
+
+        [JsonPropertyName("total")]
+        public long Total { get; set; }
+
+        [JsonPropertyName("grand_total")]
+        public long GrandTotal { get; set; }
+
+        // [JsonPropertyName("fee")]
+        // public object Fee { get; set; }
+
+        // [JsonPropertyName("credit")]
+        // public long Credit { get; set; }
+
+        // [JsonPropertyName("credit_to_balance")]
+        // public long CreditToBalance { get; set; }
+
+        [JsonPropertyName("balance")]
+        public long Balance { get; set; }
+
+        // [JsonPropertyName("earnings")]
+        // public object Earnings { get; set; }
+
+        [JsonPropertyName("currency_code")]
+        public string CurrencyCode { get; set; }
+    }
+    // public partial class AdjustedTotals
+    // {
+    //     [JsonPropertyName("subtotal")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Subtotal { get; set; }
+
+    //     [JsonPropertyName("tax")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Tax { get; set; }
+
+    //     [JsonPropertyName("total")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Total { get; set; }
+
+    //     [JsonPropertyName("fee")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Fee { get; set; }
+
+    //     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+    //     [JsonPropertyName("chargeback_fee")]
+    //     public ChargebackFee ChargebackFee { get; set; }
+
+    //     [JsonPropertyName("earnings")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Earnings { get; set; }
+
+    //     [JsonPropertyName("currency_code")]
+    //     public string CurrencyCode { get; set; }
+
+    //     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+    //     [JsonPropertyName("grand_total")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long? GrandTotal { get; set; }
+    // }
+
+    // public partial class ChargebackFee
+    // {
+    //     [JsonPropertyName("amount")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Amount { get; set; }
+
+    //     [JsonPropertyName("original")]
+    //     public object Original { get; set; }
+    // }
+
+    public partial class LineItem
+    {
+        [JsonPropertyName("id")]
+        public string Id { get; set; }
+
+        [JsonPropertyName("price_id")]
+        public string PriceId { get; set; }
+
+        // [JsonPropertyName("quantity")]
+        // public long Quantity { get; set; }
+
+        // [JsonPropertyName("totals")]
+        // public Totals Totals { get; set; }
+
+        // [JsonPropertyName("product")]
+        // public Product Product { get; set; }
+
+        // [JsonPropertyName("tax_rate")]
+        // public string TaxRate { get; set; }
+
+        // [JsonPropertyName("unit_totals")]
+        // public Totals UnitTotals { get; set; }
+
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+        [JsonPropertyName("proration")]
+        public Proration Proration { get; set; }
+    }
+
+    // public partial class Product
+    // {
+    //     [JsonPropertyName("id")]
+    //     public string Id { get; set; }
+
+    //     [JsonPropertyName("name")]
+    //     public string Name { get; set; }
+
+    //     [JsonPropertyName("description")]
+    //     public string Description { get; set; }
+
+    //     [JsonPropertyName("type")]
+    //     public TypeEnum Type { get; set; }
+
+    //     [JsonPropertyName("tax_category")]
+    //     public TypeEnum TaxCategory { get; set; }
+
+    //     [JsonPropertyName("image_url")]
+    //     public Uri ImageUrl { get; set; }
+
+    //     [JsonPropertyName("custom_data")]
+    //     public CustomData CustomData { get; set; }
+
+    //     [JsonPropertyName("status")]
+    //     public Status Status { get; set; }
+
+    //     [JsonPropertyName("created_at")]
+    //     public DateTimeOffset CreatedAt { get; set; }
+
+    //     [JsonPropertyName("updated_at")]
+    //     public DateTimeOffset UpdatedAt { get; set; }
+
+    //     [JsonPropertyName("import_meta")]
+    //     public object ImportMeta { get; set; }
+    // }
+
+    // public partial class CustomData
+    // {
+    //     [JsonPropertyName("features")]
+    //     public Features Features { get; set; }
+
+    //     [JsonPropertyName("suggested_addons")]
+    //     public string[] SuggestedAddons { get; set; }
+
+    //     [JsonPropertyName("upgrade_description")]
+    //     public string UpgradeDescription { get; set; }
+    // }
+
+    // public partial class Features
+    // {
+    //     [JsonPropertyName("aircraft_performance")]
+    //     public bool AircraftPerformance { get; set; }
+
+    //     [JsonPropertyName("compliance_monitoring")]
+    //     public bool ComplianceMonitoring { get; set; }
+
+    //     [JsonPropertyName("flight_log_management")]
+    //     public bool FlightLogManagement { get; set; }
+
+    //     [JsonPropertyName("payment_by_invoice")]
+    //     public bool PaymentByInvoice { get; set; }
+
+    //     [JsonPropertyName("route_planning")]
+    //     public bool RoutePlanning { get; set; }
+
+    //     [JsonPropertyName("sso")]
+    //     public bool Sso { get; set; }
+    // }
+
+    public partial class Proration
+    {
+        [JsonPropertyName("billing_period")]
+        public BillingPeriod BillingPeriod { get; set; }
+    }
+
+    // public partial class Totals
+    // {
+    //     [JsonPropertyName("subtotal")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Subtotal { get; set; }
+
+    //     [JsonPropertyName("discount")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Discount { get; set; }
+
+    //     [JsonPropertyName("tax")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Tax { get; set; }
+
+    //     [JsonPropertyName("total")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Total { get; set; }
+    // }
+
+    // public partial class TaxRatesUsed
+    // {
+    //     [JsonPropertyName("tax_rate")]
+    //     public string TaxRate { get; set; }
+
+    //     [JsonPropertyName("totals")]
+    //     public Totals Totals { get; set; }
+    // }
+
+    public partial class Item
+    {
+        [JsonPropertyName("price")]
+        public Price Price { get; set; }
+
+        [JsonPropertyName("quantity")]
+        public long Quantity { get; set; }
+
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+        [JsonPropertyName("proration")]
+        public Proration Proration { get; set; }
+    }
+
+    public partial class Price
+    {
+        [JsonPropertyName("id")]
+        public string Id { get; set; }
+
+        // [JsonPropertyName("description")]
+        // public string Description { get; set; }
+
+        // [JsonPropertyName("type")]
+        // public TypeEnum Type { get; set; }
+
+        [JsonPropertyName("name")]
+        public string Name { get; set; }
+
+        // [JsonPropertyName("product_id")]
+        // public string ProductId { get; set; }
+
+        // [JsonPropertyName("billing_cycle")]
+        // public PaymentTerms BillingCycle { get; set; }
+
+        // [JsonPropertyName("trial_period")]
+        // public object TrialPeriod { get; set; }
+
+        // [JsonPropertyName("tax_mode")]
+        // public TaxMode TaxMode { get; set; }
+
+        // [JsonPropertyName("unit_price")]
+        // public UnitPrice UnitPrice { get; set; }
+
+        // [JsonPropertyName("unit_price_overrides")]
+        // public object[] UnitPriceOverrides { get; set; }
+
+        // [JsonPropertyName("custom_data")]
+        // public object CustomData { get; set; }
+
+        // [JsonPropertyName("quantity")]
+        // public Quantity Quantity { get; set; }
+
+        // [JsonPropertyName("status")]
+        // public Status Status { get; set; }
+
+        // [JsonPropertyName("created_at")]
+        // public DateTimeOffset CreatedAt { get; set; }
+
+        // [JsonPropertyName("updated_at")]
+        // public DateTimeOffset UpdatedAt { get; set; }
+
+        // [JsonPropertyName("import_meta")]
+        // public object ImportMeta { get; set; }
+    }
+
+    // public partial class Quantity
+    // {
+    //     [JsonPropertyName("minimum")]
+    //     public long Minimum { get; set; }
+
+    //     [JsonPropertyName("maximum")]
+    //     public long Maximum { get; set; }
+    // }
+
+    // public partial class UnitPrice
+    // {
+    //     [JsonPropertyName("amount")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Amount { get; set; }
+
+    //     [JsonPropertyName("currency_code")]
+    //     public CurrencyCode CurrencyCode { get; set; }
+    // }
+
+    // public partial class Payment
+    // {
+    //     [JsonPropertyName("payment_attempt_id")]
+    //     public Guid PaymentAttemptId { get; set; }
+
+    //     [JsonPropertyName("stored_payment_method_id")]
+    //     public Guid StoredPaymentMethodId { get; set; }
+
+    //     [JsonPropertyName("payment_method_id")]
+    //     public string PaymentMethodId { get; set; }
+
+    //     [JsonPropertyName("amount")]
+    //     [JsonConverter(typeof(ParseStringConverter))]
+    //     public long Amount { get; set; }
+
+    //     [JsonPropertyName("status")]
+    //     public string Status { get; set; }
+
+    //     [JsonPropertyName("error_code")]
+    //     public string ErrorCode { get; set; }
+
+    //     [JsonPropertyName("method_details")]
+    //     public MethodDetails MethodDetails { get; set; }
+
+    //     [JsonPropertyName("created_at")]
+    //     public DateTimeOffset CreatedAt { get; set; }
+
+    //     [JsonPropertyName("captured_at")]
+    //     public DateTimeOffset? CapturedAt { get; set; }
+    // }
+
+    // public partial class MethodDetails
+    // {
+    //     [JsonPropertyName("type")]
+    //     public string Type { get; set; }
+
+    //     [JsonPropertyName("card")]
+    //     public Card Card { get; set; }
+    // }
+
+    // public partial class Card
+    // {
+    //     [JsonPropertyName("type")]
+    //     public string Type { get; set; }
+
+    //     [JsonPropertyName("last4")]
+    //     public string Last4 { get; set; }
+
+    //     [JsonPropertyName("expiry_month")]
+    //     public long ExpiryMonth { get; set; }
+
+    //     [JsonPropertyName("expiry_year")]
+    //     public long ExpiryYear { get; set; }
+
+    //     [JsonPropertyName("cardholder_name")]
+    //     public string CardholderName { get; set; }
+    // }
+
+    public partial class Pagination
+    {
+        [JsonPropertyName("per_page")]
+        public long PerPage { get; set; }
+
+        [JsonPropertyName("next")]
+        public Uri Next { get; set; }
+
+        [JsonPropertyName("has_more")]
+        public bool HasMore { get; set; }
+
+        [JsonPropertyName("estimated_total")]
+        public long EstimatedTotal { get; set; }
+    }
+}

Streetwriters.Common/Models/ListUsersResponse.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Text.Json.Serialization;
+
+namespace Streetwriters.Common.Models
+{
+    public partial class ListUsersResponse
+    {
+        [JsonPropertyName("success")]
+        public bool Success { get; set; }
+
+        [JsonPropertyName("response")]
+        public PaddleUser[] Users { get; set; }
+    }
+
+    public class PaddleUser
+    {
+        [JsonPropertyName("subscription_id")]
+        public long SubscriptionId { get; set; }
+
+        [JsonPropertyName("plan_id")]
+        public long PlanId { get; set; }
+
+        [JsonPropertyName("user_id")]
+        public long UserId { get; set; }
+
+        [JsonPropertyName("user_email")]
+        public string UserEmail { get; set; }
+
+        [JsonPropertyName("marketing_consent")]
+        public bool MarketingConsent { get; set; }
+
+        [JsonPropertyName("update_url")]
+        public string UpdateUrl { get; set; }
+
+        [JsonPropertyName("cancel_url")]
+        public string CancelUrl { get; set; }
+
+        [JsonPropertyName("state")]
+        public string State { get; set; }
+
+        [JsonPropertyName("signup_date")]
+        public string SignupDate { get; set; }
+
+        [JsonPropertyName("quantity")]
+        public long Quantity { get; set; }
+    }
+}

Streetwriters.Common/Models/PaddleResponse.cs

@@ -0,0 +1,24 @@
+namespace Streetwriters.Common.Models
+{
+    using System;
+    using System.Collections.Generic;
+
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using System.Globalization;
+
+    public partial class PaddleResponse
+    {
+        [JsonPropertyName("error")]
+        public PaddleError Error { get; set; }
+    }
+
+    public class PaddleError
+    {
+        public string? Type { get; set; }
+        public string? Code { get; set; }
+        public string? Detail { get; set; }
+        [JsonPropertyName("documentation_url")]
+        public string? DocumentationUrl { get; set; }
+    }
+}

Streetwriters.Common/Models/RefundPaymentResponse.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Text.Json.Serialization;
+
+namespace Streetwriters.Common.Models
+{
+    public partial class RefundPaymentResponse
+    {
+        [JsonPropertyName("success")]
+        public bool Success { get; set; }
+
+        [JsonPropertyName("response")]
+        public Refund Refund { get; set; }
+    }
+
+    public partial class Refund
+    {
+        [JsonPropertyName("refund_request_id")]
+        public long RefundRequestId { get; set; }
+    }
+}

Streetwriters.Common/Models/Response.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.Net.Http;
 using System.Runtime.Serialization;
 using Newtonsoft.Json;
 using Streetwriters.Common.Interfaces;
@@ -28,5 +29,7 @@ namespace Streetwriters.Common.Models
         [JsonIgnore]
         public bool Success { get; set; }
         public int StatusCode { get; set; }
+        [JsonIgnore]
+        public HttpContent Content { get; set; }
     }
 }

Streetwriters.Common/Models/Subscription.cs

@@ -1,80 +1,103 @@
-/*
-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;
-using MongoDB.Bson;
-using MongoDB.Bson.Serialization.Attributes;
-using Streetwriters.Common.Enums;
-using Streetwriters.Common.Interfaces;
-
-namespace Streetwriters.Common.Models
-{
-    public class Subscription : ISubscription
-    {
-        public Subscription()
-        {
-            Id = ObjectId.GenerateNewId().ToString();
-        }
-
-        [BsonId]
-        [BsonRepresentation(BsonType.ObjectId)]
-        [JsonPropertyName("id")]
-        public string Id { get; set; }
-
-        [JsonPropertyName("userId")]
-        public string UserId { get; set; }
-
-        [JsonIgnore]
-        public string OrderId { get; set; }
-        [JsonIgnore]
-        public string SubscriptionId { get; set; }
-
-        [BsonRepresentation(BsonType.Int32)]
-        [JsonPropertyName("appId")]
-        public ApplicationType AppId { get; set; }
-
-        [JsonPropertyName("start")]
-        public long StartDate { get; set; }
-
-        [JsonPropertyName("expiry")]
-        public long ExpiryDate { get; set; }
-
-        [BsonRepresentation(BsonType.Int32)]
-        [JsonPropertyName("provider")]
-        public SubscriptionProvider Provider { get; set; }
-
-        [BsonRepresentation(BsonType.Int32)]
-        [JsonPropertyName("type")]
-        public SubscriptionType Type { get; set; }
-
-        [JsonPropertyName("cancelURL")]
-        public string CancelURL { get; set; }
-
-        [JsonPropertyName("updateURL")]
-        public string UpdateURL { get; set; }
-
-        [JsonPropertyName("productId")]
-        public string ProductId { get; set; }
-
-        [JsonIgnore]
-        public int TrialExtensionCount { 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.ComponentModel.DataAnnotations;
+using System.Runtime.Serialization;
+using System.Text.Json.Serialization;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+using Streetwriters.Common.Enums;
+using Streetwriters.Common.Interfaces;
+
+namespace Streetwriters.Common.Models
+{
+    public class Subscription
+    {
+        public Subscription()
+        {
+            Id = ObjectId.GenerateNewId().ToString();
+        }
+
+        [BsonId]
+        [BsonRepresentation(BsonType.ObjectId)]
+        [JsonPropertyName("id")]
+        public string Id { get; set; }
+
+        [JsonPropertyName("userId")]
+        public required string UserId { get; set; }
+
+        [JsonIgnore]
+        public string? OrderId { get; set; }
+
+        [JsonIgnore]
+        public string? SubscriptionId { get; set; }
+
+        [BsonRepresentation(BsonType.Int32)]
+        [JsonPropertyName("appId")]
+        public required ApplicationType AppId { get; set; }
+
+        [JsonPropertyName("start")]
+        public long StartDate { get; set; }
+
+        [JsonPropertyName("expiry")]
+        public long ExpiryDate { get; set; }
+
+        [BsonRepresentation(BsonType.Int32)]
+        [JsonPropertyName("provider")]
+        public SubscriptionProvider Provider { get; set; }
+
+        [BsonRepresentation(BsonType.Int32)]
+        [JsonPropertyName("type")]
+        [Obsolete("Use SubscriptionPlan and SubscriptionStatus instead.")]
+        public SubscriptionType Type { get; set; }
+
+        [JsonPropertyName("cancelURL")]
+        public string? CancelURL { get; set; }
+
+        [JsonPropertyName("updateURL")]
+        public string? UpdateURL { get; set; }
+
+        [JsonPropertyName("googlePurchaseToken")]
+        public string? GooglePurchaseToken { get; set; }
+
+        [JsonPropertyName("productId")]
+        public string? ProductId { get; set; }
+
+        [JsonIgnore]
+        public int TrialExtensionCount { get; set; }
+
+        [JsonPropertyName("trialExpiry")]
+        public long TrialExpiryDate { get; set; }
+
+        [JsonPropertyName("trialsAvailed")]
+        public SubscriptionPlan[]? TrialsAvailed { get; set; }
+
+        [JsonPropertyName("updatedAt")]
+        public long UpdatedAt { get; set; }
+
+        [BsonRepresentation(BsonType.Int32)]
+        [JsonPropertyName("plan")]
+        public SubscriptionPlan Plan { get; set; }
+
+        [BsonRepresentation(BsonType.Int32)]
+        [JsonPropertyName("status")]
+        public SubscriptionStatus Status { get; set; }
+    }
+}

Streetwriters.Common/Models/SubscriptionPreviewResponse.cs

@@ -0,0 +1,57 @@
+namespace Streetwriters.Common.Models
+{
+    using System;
+    using System.Collections.Generic;
+
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using System.Globalization;
+
+    public partial class SubscriptionPreviewResponse : PaddleResponse
+    {
+        [JsonPropertyName("data")]
+        public SubscriptionPreviewData Data { get; set; }
+    }
+
+    public partial class SubscriptionPreviewData
+    {
+        [JsonPropertyName("currency_code")]
+        public string CurrencyCode { get; set; }
+
+        [JsonPropertyName("billing_cycle")]
+        public BillingCycle BillingCycle { get; set; }
+
+        [JsonPropertyName("update_summary")]
+        public UpdateSummary UpdateSummary { get; set; }
+
+        [JsonPropertyName("immediate_transaction")]
+        public TransactionV2 ImmediateTransaction { get; set; }
+
+        [JsonPropertyName("next_transaction")]
+        public TransactionV2 NextTransaction { get; set; }
+
+        [JsonPropertyName("recurring_transaction_details")]
+        public Details RecurringTransactionDetails { get; set; }
+    }
+
+    public partial class UpdateSummary
+    {
+        [JsonPropertyName("charge")]
+        public UpdateSummaryItem Charge { get; set; }
+
+        [JsonPropertyName("credit")]
+        public UpdateSummaryItem Credit { get; set; }
+
+        [JsonPropertyName("result")]
+        public UpdateSummaryItem Result { get; set; }
+    }
+
+    public partial class UpdateSummaryItem
+    {
+        [JsonPropertyName("amount")]
+        public long Amount { get; set; }
+
+        [JsonPropertyName("action")]
+        public string? Action { get; set; }
+    }
+}

Streetwriters.Common/Services/PaddleBillingService.cs

@@ -0,0 +1,138 @@
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Net.Http.Json;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.WebUtilities;
+using Streetwriters.Common.Models;
+
+namespace Streetwriters.Common.Services
+{
+    public class PaddleBillingService
+    {
+#if DEBUG
+        private const string PADDLE_BASE_URI = "https://sandbox-api.paddle.com";
+#else
+        private const string PADDLE_BASE_URI = "https://api.paddle.com";
+#endif
+        private readonly HttpClient httpClient = new();
+        public PaddleBillingService(string paddleApiKey)
+        {
+            httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", paddleApiKey);
+        }
+
+        public async Task<GetSubscriptionResponse?> GetSubscriptionAsync(string subscriptionId)
+        {
+            var url = $"{PADDLE_BASE_URI}/subscriptions/{subscriptionId}";
+            var response = await httpClient.GetAsync(url);
+            return await response.Content.ReadFromJsonAsync<GetSubscriptionResponse>();
+        }
+
+        public async Task<GetTransactionResponse?> GetTransactionAsync(string transactionId)
+        {
+            var url = $"{PADDLE_BASE_URI}/transactions/{transactionId}";
+            var response = await httpClient.GetAsync(url);
+            return await response.Content.ReadFromJsonAsync<GetTransactionResponse>();
+        }
+
+        public async Task<GetTransactionInvoiceResponse?> GetTransactionInvoiceAsync(string transactionId)
+        {
+            var url = $"{PADDLE_BASE_URI}/transactions/{transactionId}/invoice";
+            var response = await httpClient.GetAsync(url);
+            return await response.Content.ReadFromJsonAsync<GetTransactionInvoiceResponse>();
+        }
+
+        public async Task<ListTransactionsResponseV2?> ListTransactionsAsync(string? subscriptionId = null, string? customerId = null, string[]? status = null, string[]? origin = null)
+        {
+            var url = $"{PADDLE_BASE_URI}/transactions";
+            var parameters = new Dictionary<string, string?>()
+            {
+                { "subscription_id", subscriptionId },
+                { "customer_id", customerId },
+                { "status", string.Join(',', status ?? ["billed","completed"]) },
+                { "order_by", "billed_at[DESC]" }
+            };
+            if (origin is not null) parameters.Add("origin", string.Join(',', origin));
+            var response = await httpClient.GetAsync(QueryHelpers.AddQueryString(url, parameters));
+
+            return await response.Content.ReadFromJsonAsync<ListTransactionsResponseV2>();
+        }
+
+        public async Task<PaddleResponse?> RefundTransactionAsync(string transactionId, string transactionItemId, string reason = "")
+        {
+            var url = $"{PADDLE_BASE_URI}/adjustments";
+            var response = await httpClient.PostAsync(url, JsonContent.Create(new Dictionary<string, object>
+            {
+                { "action", "refund" },
+                {
+                    "items",
+                    new object[]
+                    {
+                        new Dictionary<string, string> {
+                            {"item_id", transactionItemId},
+                            {"type", "full"}
+                        }
+                    }
+                },
+                { "reason", reason },
+                { "transaction_id", transactionId }
+            }));
+            return await response.Content.ReadFromJsonAsync<PaddleResponse>();
+        }
+
+        public async Task<SubscriptionPreviewResponse?> PreviewSubscriptionChangeAsync(string subscriptionId, string newProductId, bool isTrialing)
+        {
+            var url = $"{PADDLE_BASE_URI}/subscriptions/{subscriptionId}/preview";
+            var response = await httpClient.PatchAsync(url, JsonContent.Create(new
+            {
+                proration_billing_mode = isTrialing ? "do_not_bill" : "prorated_immediately",
+                items = new[] { new { price_id = newProductId, quantity = 1 } }
+            }));
+            return await response.Content.ReadFromJsonAsync<SubscriptionPreviewResponse>();
+        }
+
+        public async Task<PaddleResponse?> ChangeSubscriptionAsync(string subscriptionId, string newProductId, bool isTrialing)
+        {
+            var url = $"{PADDLE_BASE_URI}/subscriptions/{subscriptionId}";
+            var response = await httpClient.PatchAsync(url, JsonContent.Create(new
+            {
+                proration_billing_mode = isTrialing ? "do_not_bill" : "prorated_immediately",
+                items = new[] { new { price_id = newProductId, quantity = 1 } }
+            }));
+            return await response.Content.ReadFromJsonAsync<PaddleResponse>();
+        }
+
+        public async Task<PaddleResponse?> CancelSubscriptionAsync(string subscriptionId)
+        {
+            var url = $"{PADDLE_BASE_URI}/subscriptions/{subscriptionId}/cancel";
+            var response = await httpClient.PostAsync(url, JsonContent.Create(new { effective_from = "immediately" }));
+            return await response.Content.ReadFromJsonAsync<PaddleResponse>();
+        }
+
+        public async Task<PaddleResponse?> PauseSubscriptionAsync(string subscriptionId)
+        {
+            var url = $"{PADDLE_BASE_URI}/subscriptions/{subscriptionId}/pause";
+            var response = await httpClient.PostAsync(url, JsonContent.Create(new { }));
+            return await response.Content.ReadFromJsonAsync<PaddleResponse>();
+        }
+
+        public async Task<PaddleResponse?> ResumeSubscriptionAsync(string subscriptionId)
+        {
+            var url = $"{PADDLE_BASE_URI}/subscriptions/{subscriptionId}";
+            var response = await httpClient.PatchAsync(url, JsonContent.Create(new Dictionary<string, string?>
+            {
+                {"scheduled_change", null}
+            }));
+            return await response.Content.ReadFromJsonAsync<PaddleResponse>();
+        }
+
+        public async Task<GetCustomerResponse?> FindCustomerFromTransactionAsync(string transactionId)
+        {
+            var transaction = await GetTransactionAsync(transactionId);
+            if (transaction == null) return null;
+            var url = $"{PADDLE_BASE_URI}/customers/{transaction.Transaction.CustomerId}";
+            var response = await httpClient.GetFromJsonAsync<GetCustomerResponse>(url);
+            return response;
+        }
+    }
+}

Streetwriters.Common/Services/PaddleService.cs

@@ -0,0 +1,188 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Net.Http.Json;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
+using Streetwriters.Common.Models;
+
+namespace Streetwriters.Common.Services
+{
+    public class PaddleService(string vendorId, string vendorAuthCode)
+    {
+#if (DEBUG || STAGING)
+        const string PADDLE_BASE_URI = "https://sandbox-vendors.paddle.com/api";
+#else
+        const string PADDLE_BASE_URI = "https://vendors.paddle.com/api";
+#endif
+
+        HttpClient httpClient = new HttpClient();
+
+        public async Task<ListUsersResponse> ListUsersAsync(
+            string subscriptionId,
+            int results
+        )
+        {
+            var url = $"{PADDLE_BASE_URI}/2.0/subscription/users";
+            var httpClient = new HttpClient();
+            var response = await httpClient.PostAsync(
+                url,
+                new FormUrlEncodedContent(
+                    new Dictionary<string, string>
+                    {
+                        { "vendor_id", vendorId },
+                        { "vendor_auth_code", vendorAuthCode },
+                        { "subscription_id", subscriptionId },
+                        { "results_per_page", results.ToString() },
+                    }
+                )
+            );
+
+            return await response.Content.ReadFromJsonAsync<ListUsersResponse>();
+        }
+
+        public async Task<ListPaymentsResponse> ListPaymentsAsync(
+            string subscriptionId,
+            long planId
+        )
+        {
+            var url = $"{PADDLE_BASE_URI}/2.0/subscription/payments";
+            var httpClient = new HttpClient();
+            var response = await httpClient.PostAsync(
+                url,
+                new FormUrlEncodedContent(
+                    new Dictionary<string, string>
+                    {
+                        { "vendor_id", vendorId },
+                        { "vendor_auth_code", vendorAuthCode },
+                        { "subscription_id", subscriptionId },
+                        { "is_paid", "1" },
+                        { "plan", planId.ToString() },
+                        { "is_one_off_charge", "0" },
+                    }
+                )
+            );
+
+            return await response.Content.ReadFromJsonAsync<ListPaymentsResponse>();
+        }
+
+        public async Task<ListTransactionsResponse> ListTransactionsAsync(
+            string subscriptionId
+        )
+        {
+            var url = $"{PADDLE_BASE_URI}/2.0/subscription/{subscriptionId}/transactions";
+            var httpClient = new HttpClient();
+            var response = await httpClient.PostAsync(
+                url,
+                new FormUrlEncodedContent(
+                    new Dictionary<string, string>
+                    {
+                        { "vendor_id", vendorId },
+                        { "vendor_auth_code", vendorAuthCode },
+                    }
+                )
+            );
+
+            return await response.Content.ReadFromJsonAsync<ListTransactionsResponse>();
+        }
+
+        public async Task<PaddleTransactionUser> FindUserFromOrderAsync(string orderId)
+        {
+            var url = $"{PADDLE_BASE_URI}/2.0/order/{orderId}/transactions";
+            var httpClient = new HttpClient();
+            var response = await httpClient.PostAsync(
+                url,
+                new FormUrlEncodedContent(
+                    new Dictionary<string, string>
+                    {
+                        { "vendor_id", vendorId },
+                        { "vendor_auth_code", vendorAuthCode },
+                    }
+                )
+            );
+            var transactions = await response.Content.ReadFromJsonAsync<ListTransactionsResponse>();
+            if (transactions.Transactions.Length == 0) return null;
+            return transactions.Transactions[0].User;
+        }
+
+        public async Task<bool> RefundPaymentAsync(string paymentId, string reason = "")
+        {
+            var url = $"{PADDLE_BASE_URI}/2.0/payment/refund";
+            var httpClient = new HttpClient();
+            var response = await httpClient.PostAsync(
+                url,
+                new FormUrlEncodedContent(
+                    new Dictionary<string, string>
+                    {
+                        { "vendor_id", vendorId },
+                        { "vendor_auth_code", vendorAuthCode },
+                        { "order_id", paymentId },
+                        { "reason", reason },
+                    }
+                )
+            );
+
+            var refundResponse = await response.Content.ReadFromJsonAsync<RefundPaymentResponse>();
+            return refundResponse.Success;
+        }
+
+        public async Task<bool> CancelSubscriptionAsync(string subscriptionId)
+        {
+            var url = $"{PADDLE_BASE_URI}/2.0/subscription/users_cancel";
+            var httpClient = new HttpClient();
+            var response = await httpClient.PostAsync(
+                url,
+                new FormUrlEncodedContent(
+                    new Dictionary<string, string>
+                    {
+                        { "vendor_id", vendorId },
+                        { "vendor_auth_code", vendorAuthCode },
+                        { "subscription_id", subscriptionId },
+                    }
+                )
+            );
+
+            return response.IsSuccessStatusCode;
+        }
+
+        public async Task<bool> PauseSubscriptionAsync(string subscriptionId)
+        {
+            var url = $"{PADDLE_BASE_URI}/2.0/subscription/users/update";
+            var httpClient = new HttpClient();
+            var response = await httpClient.PostAsync(
+                url,
+                new FormUrlEncodedContent(
+                    new Dictionary<string, string>
+                    {
+                        { "vendor_id", vendorId },
+                        { "vendor_auth_code", vendorAuthCode },
+                        { "subscription_id", subscriptionId },
+                        { "pause", "true" },
+                    }
+                )
+            );
+
+            return response.IsSuccessStatusCode;
+        }
+
+        public async Task<bool> ResumeSubscriptionAsync(string subscriptionId)
+        {
+            var url = $"{PADDLE_BASE_URI}/2.0/subscription/users/update";
+            var httpClient = new HttpClient();
+            var response = await httpClient.PostAsync(
+                url,
+                new FormUrlEncodedContent(
+                    new Dictionary<string, string>
+                    {
+                        { "vendor_id", vendorId },
+                        { "vendor_auth_code", vendorAuthCode },
+                        { "subscription_id", subscriptionId },
+                        { "pause", "false" },
+                    }
+                )
+            );
+
+            return response.IsSuccessStatusCode;
+        }
+    }
+}

Streetwriters.Common/Services/URLAnalyzer.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Net.Http;
+using System.Net.Http.Json;
+using System.Threading.Tasks;
+using Streetwriters.Common.Interfaces;
+
+namespace Streetwriters.Common.Services
+{
+    struct Threat
+    {
+        public string[]? ThreatTypes { get; set; }
+    }
+    struct WebRiskAPIResponse
+    {
+        public Threat Threat { get; set; }
+    }
+
+    public class URLAnalyzer : IURLAnalyzer, IDisposable
+    {
+        private readonly HttpClient httpClient = new();
+
+        public async Task<bool> IsURLSafeAsync(string uri)
+        {
+            if (string.IsNullOrEmpty(Constants.WEBRISK_API_URI)) return true;
+            var response = await httpClient.PostAsJsonAsync(Constants.WEBRISK_API_URI, new { uri });
+            if (!response.IsSuccessStatusCode) return true;
+            var json = await response.Content.ReadFromJsonAsync<WebRiskAPIResponse>();
+            return json.Threat.ThreatTypes == null || json.Threat.ThreatTypes.Length == 0;
+        }
+
+        void IDisposable.Dispose()
+        {
+            httpClient.Dispose();
+        }
+    }
+}

Streetwriters.Common/Streetwriters.Common.csproj

@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
 

Streetwriters.Common/WampServers.cs

@@ -1,125 +1,140 @@
-/*
-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.Concurrent;
-using System.Collections.Generic;
-using System.Reactive.Subjects;
-using System.Threading.Tasks;
-using Streetwriters.Common.Helpers;
-using Streetwriters.Common.Interfaces;
-using WampSharp.V2.Client;
-
-namespace Streetwriters.Common
-{
-    public class WampServer<T> where T : new()
-    {
-        private readonly ConcurrentDictionary<string, IWampRealmProxy> Channels = new();
-
-        public string Endpoint { get; set; }
-        public string Address { get; set; }
-        public T Topics { get; set; } = new T();
-        public string Realm { get; set; }
-
-        private async Task<IWampRealmProxy> GetChannelAsync(string topic)
-        {
-            if (!Channels.TryGetValue(topic, out IWampRealmProxy channel) || !channel.Monitor.IsConnected)
-            {
-                channel = await WampHelper.OpenWampChannelAsync(Address, Realm);
-                Channels.AddOrUpdate(topic, (key) => channel, (key, old) => channel);
-            }
-            return channel;
-        }
-
-        public async Task<V> GetServiceAsync<V>(string topic) where V : class
-        {
-            var channel = await GetChannelAsync(topic);
-            return channel.Services.GetCalleeProxy<V>();
-        }
-
-        public async Task PublishMessageAsync<V>(string topic, V message)
-        {
-            try
-            {
-                IWampRealmProxy channel = await GetChannelAsync(topic);
-                WampHelper.PublishMessage(channel, topic, message);
-            }
-            catch (Exception ex)
-            {
-                await Slogger<WampServer<T>>.Error(nameof(PublishMessageAsync), ex.ToString());
-                throw ex;
-            }
-        }
-    }
-
-    public class WampServers
-    {
-        public static WampServer<MessengerServerTopics> MessengerServer { get; } = new WampServer<MessengerServerTopics>
-        {
-            Endpoint = "/wamp",
-            Address = $"{Servers.MessengerServer.WS()}/wamp",
-            Realm = "messages",
-        };
-
-        public static WampServer<SubscriptionServerTopics> SubscriptionServer { get; } = new WampServer<SubscriptionServerTopics>
-        {
-            Endpoint = "/wamp",
-            Address = $"{Servers.SubscriptionServer.WS()}/wamp",
-            Realm = "messages",
-        };
-
-        public static WampServer<IdentityServerTopics> IdentityServer { get; } = new WampServer<IdentityServerTopics>
-        {
-            Endpoint = "/wamp",
-            Address = $"{Servers.IdentityServer.WS()}/wamp",
-            Realm = "messages",
-        };
-
-        public static WampServer<NotesnookServerTopics> NotesnookServer { get; } = new WampServer<NotesnookServerTopics>
-        {
-            Endpoint = "/wamp",
-            Address = $"{Servers.NotesnookAPI.WS()}/wamp",
-            Realm = "messages",
-        };
-    }
-
-    public class MessengerServerTopics
-    {
-        public const string SendSSETopic = "co.streetwriters.sse.send";
-    }
-
-    public class SubscriptionServerTopics
-    {
-        public const string UserSubscriptionServiceTopic = "co.streetwriters.subscriptions.subscriptions";
-
-        public const string CreateSubscriptionTopic = "co.streetwriters.subscriptions.create";
-        public const string DeleteSubscriptionTopic = "co.streetwriters.subscriptions.delete";
-    }
-
-    public class IdentityServerTopics
-    {
-        public const string UserAccountServiceTopic = "co.streetwriters.identity.users";
-        public const string ClearCacheTopic = "co.streetwriters.identity.clear_cache";
-        public const string DeleteUserTopic = "co.streetwriters.identity.delete_user";
-    }
-
-    public class NotesnookServerTopics
-    {
-    }
+/*
+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.Concurrent;
+using System.Collections.Generic;
+using System.Reactive.Subjects;
+using System.Threading.Tasks;
+using Streetwriters.Common.Helpers;
+using Streetwriters.Common.Interfaces;
+using WampSharp.V2.Client;
+
+namespace Streetwriters.Common
+{
+    public class WampServer<T> where T : new()
+    {
+        private readonly ConcurrentDictionary<string, IWampRealmProxy> Channels = new();
+
+        public string Endpoint { get; set; }
+        public string Address { get; set; }
+        public T Topics { get; set; } = new T();
+        public string Realm { get; set; }
+
+        private async Task<IWampRealmProxy> GetChannelAsync(string topic)
+        {
+            if (!Channels.TryGetValue(topic, out IWampRealmProxy channel) || !channel.Monitor.IsConnected)
+            {
+                channel = await WampHelper.OpenWampChannelAsync(Address, Realm);
+                Channels.AddOrUpdate(topic, (key) => channel, (key, old) => channel);
+            }
+            return channel;
+        }
+
+        public async Task<V> GetServiceAsync<V>(string topic) where V : class
+        {
+            var channel = await GetChannelAsync(topic);
+            return channel.Services.GetCalleeProxy<V>();
+        }
+
+        public async Task PublishMessageAsync<V>(string topic, V message)
+        {
+            try
+            {
+                IWampRealmProxy channel = await GetChannelAsync(topic);
+                WampHelper.PublishMessage(channel, topic, message);
+            }
+            catch (Exception ex)
+            {
+                await Slogger<WampServer<T>>.Error(nameof(PublishMessageAsync), ex.ToString());
+                throw ex;
+            }
+        }
+
+        public async Task PublishMessagesAsync<V>(string topic, IEnumerable<V> messages)
+        {
+            try
+            {
+                IWampRealmProxy channel = await GetChannelAsync(topic);
+                WampHelper.PublishMessages(channel, topic, messages);
+            }
+            catch (Exception ex)
+            {
+                await Slogger<WampServer<T>>.Error(nameof(PublishMessagesAsync), ex.ToString());
+                throw ex;
+            }
+        }
+    }
+
+    public class WampServers
+    {
+        public static WampServer<MessengerServerTopics> MessengerServer { get; } = new WampServer<MessengerServerTopics>
+        {
+            Endpoint = "/wamp",
+            Address = $"{Servers.MessengerServer.WS()}/wamp",
+            Realm = "messages",
+        };
+
+        public static WampServer<SubscriptionServerTopics> SubscriptionServer { get; } = new WampServer<SubscriptionServerTopics>
+        {
+            Endpoint = "/wamp",
+            Address = $"{Servers.SubscriptionServer.WS()}/wamp",
+            Realm = "messages",
+        };
+
+        public static WampServer<IdentityServerTopics> IdentityServer { get; } = new WampServer<IdentityServerTopics>
+        {
+            Endpoint = "/wamp",
+            Address = $"{Servers.IdentityServer.WS()}/wamp",
+            Realm = "messages",
+        };
+
+        public static WampServer<NotesnookServerTopics> NotesnookServer { get; } = new WampServer<NotesnookServerTopics>
+        {
+            Endpoint = "/wamp",
+            Address = $"{Servers.NotesnookAPI.WS()}/wamp",
+            Realm = "messages",
+        };
+    }
+
+    public class MessengerServerTopics
+    {
+        public const string SendSSETopic = "co.streetwriters.sse.send";
+    }
+
+    public class SubscriptionServerTopics
+    {
+        public const string UserSubscriptionServiceTopic = "co.streetwriters.subscriptions.subscriptions";
+
+        public const string CreateSubscriptionTopic = "co.streetwriters.subscriptions.create";
+        public const string CreateSubscriptionV2Topic = "co.streetwriters.subscriptions.v2.create";
+        public const string DeleteSubscriptionTopic = "co.streetwriters.subscriptions.delete";
+    }
+
+    public class IdentityServerTopics
+    {
+        public const string UserAccountServiceTopic = "co.streetwriters.identity.users";
+        public const string ClearCacheTopic = "co.streetwriters.identity.clear_cache";
+        public const string DeleteUserTopic = "co.streetwriters.identity.delete_user";
+    }
+
+    public class NotesnookServerTopics
+    {
+    }
 }

Streetwriters.Data/Repositories/Repository.cs

@@ -84,6 +84,11 @@ namespace Streetwriters.Data.Repositories
             return all.ToList();
         }
 
+        public virtual async Task<long> CountAsync(Expression<Func<TEntity, bool>> filterExpression)
+        {
+            return await Collection.CountDocumentsAsync(filterExpression);
+        }
+
         public virtual void Update(string id, TEntity obj)
         {
             dbContext.AddCommand((handle, ct) => Collection.ReplaceOneAsync(handle, Builders<TEntity>.Filter.Eq("_id", ObjectId.Parse(id)), obj, cancellationToken: ct));

Streetwriters.Identity/Controllers/MFAController.cs

@@ -91,7 +91,7 @@ namespace Streetwriters.Identity.Controllers
         [HttpPost("send")]
         [Authorize("mfa")]
         [Authorize(LocalApi.PolicyName)]
-        [EnableRateLimiting("strict")]
+        [EnableRateLimiting("super_strict")]
         public async Task<IActionResult> RequestCode([FromForm] string type)
         {
             var client = Clients.FindClientById(User.FindFirstValue("client_id"));

Streetwriters.Identity/Controllers/SignupController.cs

@@ -109,7 +109,7 @@ namespace Streetwriters.Identity.Controllers
                     await UserManager.AddToRoleAsync(user, client.Id);
                     if (Constants.IS_SELF_HOSTED)
                     {
-                        await UserManager.AddClaimAsync(user, UserService.SubscriptionTypeToClaim(client.Id, Common.Enums.SubscriptionType.PREMIUM));
+                        await UserManager.AddClaimAsync(user, UserService.SubscriptionPlanToClaim(client.Id, SubscriptionPlan.BELIEVER));
                     }
                     else
                     {

Streetwriters.Identity/MessageHandlers/CreateSubscription.cs

@@ -1,49 +1,50 @@
-/*
-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.Messages;
-using Streetwriters.Common.Models;
-using Streetwriters.Common;
-using Microsoft.AspNetCore.Identity;
-using System.Security.Claims;
-using System.Linq;
-using Streetwriters.Identity.Services;
-
-namespace Streetwriters.Identity.MessageHandlers
-{
-    public class CreateSubscription
-    {
-        public static async Task Process(CreateSubscriptionMessage message, UserManager<User> userManager)
-        {
-            var user = await userManager.FindByIdAsync(message.UserId);
-            var client = Clients.FindClientByAppId(message.AppId);
-            if (client == null || user == null) return;
-
-            IdentityUserClaim<string> statusClaim = user.Claims.FirstOrDefault((c) => c.ClaimType == UserService.GetClaimKey(client.Id));
-            Claim subscriptionClaim = UserService.SubscriptionTypeToClaim(client.Id, message.Type);
-            if (statusClaim?.ClaimValue == subscriptionClaim.Value) return;
-            if (statusClaim != null)
-                await userManager.ReplaceClaimAsync(user, statusClaim.ToClaim(), subscriptionClaim);
-            else
-                await userManager.AddClaimAsync(user, subscriptionClaim);
-        }
-
-    }
+/*
+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.Messages;
+using Streetwriters.Common.Models;
+using Streetwriters.Common;
+using Microsoft.AspNetCore.Identity;
+using System.Security.Claims;
+using System.Linq;
+using Streetwriters.Identity.Services;
+
+namespace Streetwriters.Identity.MessageHandlers
+{
+    public class CreateSubscription
+    {
+        public static async Task Process(CreateSubscriptionMessage message, UserManager<User> userManager)
+        {
+            var user = await userManager.FindByIdAsync(message.UserId);
+            var client = Clients.FindClientByAppId(message.AppId);
+            if (client == null || user == null) return;
+
+            IdentityUserClaim<string> statusClaim = user.Claims.FirstOrDefault((c) => c.ClaimType == UserService.GetClaimKey(client.Id));
+            Claim subscriptionClaim = UserService.SubscriptionTypeToClaim(client.Id, message.Type);
+            if (statusClaim?.ClaimValue == subscriptionClaim.Value) return;
+            if (statusClaim != null)
+                await userManager.ReplaceClaimAsync(user, statusClaim.ToClaim(), subscriptionClaim);
+            // we no longer accept legacy subscriptions.
+            // else
+            //     await userManager.AddClaimAsync(user, subscriptionClaim);
+        }
+
+    }
 }

Streetwriters.Identity/MessageHandlers/CreateSubscriptionV2.cs

@@ -0,0 +1,49 @@
+/*
+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.Messages;
+using Streetwriters.Common.Models;
+using Streetwriters.Common;
+using Microsoft.AspNetCore.Identity;
+using System.Security.Claims;
+using System.Linq;
+using Streetwriters.Identity.Services;
+
+namespace Streetwriters.Identity.MessageHandlers
+{
+    public class CreateSubscriptionV2
+    {
+        public static async Task Process(CreateSubscriptionMessageV2 message, UserManager<User> userManager)
+        {
+            var user = await userManager.FindByIdAsync(message.UserId);
+            var client = Clients.FindClientByAppId(message.AppId);
+            if (client == null || user == null) return;
+
+            IdentityUserClaim<string> statusClaim = user.Claims.FirstOrDefault((c) => c.ClaimType == UserService.GetClaimKey(client.Id));
+            Claim subscriptionClaim = UserService.SubscriptionPlanToClaim(client.Id, message.Plan);
+            if (statusClaim?.ClaimValue == subscriptionClaim.Value) return;
+            if (statusClaim != null)
+                await userManager.ReplaceClaimAsync(user, statusClaim.ToClaim(), subscriptionClaim);
+            else
+                await userManager.AddClaimAsync(user, subscriptionClaim);
+        }
+
+    }
+}

Streetwriters.Identity/MessageHandlers/DeleteSubscription.cs

@@ -32,7 +32,7 @@ namespace Streetwriters.Identity.MessageHandlers
         {
             var user = await userManager.FindByIdAsync(message.UserId);
             var client = Clients.FindClientByAppId(message.AppId);
-            if (client != null || user != null) return;
+            if (client == null || user == null) return;
 
             IdentityUserClaim<string> statusClaim = user.Claims.FirstOrDefault((c) => c.ClaimType == $"{client.Id}:status");
             if (statusClaim != null)

Streetwriters.Identity/Services/MFAService.cs

@@ -24,6 +24,7 @@ using System.Text;
 using System.Text.Encodings.Web;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Identity;
+using Streetwriters.Common;
 using Streetwriters.Common.Enums;
 using Streetwriters.Common.Interfaces;
 using Streetwriters.Common.Models;
@@ -170,8 +171,8 @@ namespace Streetwriters.Identity.Services
 
             if (isSetup &&
                 method == MFAMethods.SMS &&
-                !UserService.IsUserPremium(client.Id, user))
-                throw new Exception("Due to the high costs of SMS, currently 2FA via SMS is only available for Pro users.");
+                !UserService.IsSMSMFAAllowed(client.Id, user))
+                throw new Exception("Due to the high costs of SMS, 2FA via SMS is only available on Pro & Believer plans.");
 
             // if (!user.EmailConfirmed) throw new Exception("Please confirm your email before activating 2FA by email.");
             await GetAuthenticatorDetailsAsync(user, client);
@@ -185,6 +186,7 @@ namespace Streetwriters.Identity.Services
                 case "sms":
                     await UserManager.SetPhoneNumberAsync(user, form.PhoneNumber);
                     var id = await SMSSender.SendOTPAsync(form.PhoneNumber, client);
+                    await Slogger<MFAService>.Info("SendOTPAsync", user.Id.ToString(), id);
                     await this.ReplaceClaimAsync(user, MFAService.SMS_ID_CLAIM, id);
                     break;
 

Streetwriters.Identity/Services/UserAccountService.cs

@@ -12,11 +12,11 @@ namespace Streetwriters.Identity.Services
 {
     public class UserAccountService(UserManager<User> userManager, IMFAService mfaService) : IUserAccountService
     {
-        public async Task<UserModel> GetUserAsync(string clientId, string userId)
+        public async Task<UserModel?> GetUserAsync(string clientId, string userId)
         {
             var user = await userManager.FindByIdAsync(userId);
             if (!await UserService.IsUserValidAsync(userManager, user, clientId))
-                throw new Exception($"Unable to find user with ID '{userId}'.");
+                return null;
 
             var claims = await userManager.GetClaimsAsync(user);
             var marketingConsentClaim = claims.FirstOrDefault((claim) => claim.Type == $"{clientId}:marketing_consent");
@@ -46,7 +46,7 @@ namespace Streetwriters.Identity.Services
         public async Task DeleteUserAsync(string clientId, string userId, string password)
         {
             var user = await userManager.FindByIdAsync(userId);
-            if (!await UserService.IsUserValidAsync(userManager, user, clientId)) throw new Exception($"User not found.");
+            if (!await UserService.IsUserValidAsync(userManager, user, clientId)) return;
 
             if (!await userManager.CheckPasswordAsync(user, password)) throw new Exception("Wrong password.");
 

Streetwriters.Identity/Services/UserService.cs

@@ -1,89 +1,133 @@
-/*
-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.Security.Claims;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Identity;
-using Streetwriters.Common.Enums;
-using Streetwriters.Common.Models;
-
-namespace Streetwriters.Identity.Services
-{
-    public class UserService
-    {
-        public static SubscriptionType GetUserSubscriptionStatus(string clientId, User user)
-        {
-            var claimKey = GetClaimKey(clientId);
-            var status = user.Claims.FirstOrDefault((c) => c.ClaimType == claimKey).ClaimValue;
-            switch (status)
-            {
-                case "basic":
-                    return SubscriptionType.BASIC;
-                case "trial":
-                    return SubscriptionType.TRIAL;
-                case "premium":
-                    return SubscriptionType.PREMIUM;
-                case "premium_canceled":
-                    return SubscriptionType.PREMIUM_CANCELED;
-                case "premium_expired":
-                    return SubscriptionType.PREMIUM_EXPIRED;
-                default:
-                    return SubscriptionType.BASIC;
-            }
-        }
-
-
-
-        public static bool IsUserPremium(string clientId, User user)
-        {
-            var status = GetUserSubscriptionStatus(clientId, user);
-            return status == SubscriptionType.PREMIUM || status == SubscriptionType.PREMIUM_CANCELED;
-        }
-
-        public static Claim SubscriptionTypeToClaim(string clientId, SubscriptionType type)
-        {
-            var claimKey = GetClaimKey(clientId);
-            switch (type)
-            {
-                case SubscriptionType.BASIC:
-                    return new Claim(claimKey, "basic");
-                case SubscriptionType.TRIAL:
-                    return new Claim(claimKey, "trial");
-                case SubscriptionType.PREMIUM:
-                    return new Claim(claimKey, "premium");
-                case SubscriptionType.PREMIUM_CANCELED:
-                    return new Claim(claimKey, "premium_canceled");
-                case SubscriptionType.PREMIUM_EXPIRED:
-                    return new Claim(claimKey, "premium_expired");
-            }
-            return null;
-        }
-
-        public static string GetClaimKey(string clientId)
-        {
-            return $"{clientId}:status";
-        }
-
-        public static async Task<bool> IsUserValidAsync(UserManager<User> userManager, User user, string clientId)
-        {
-            return user != null && await userManager.IsInRoleAsync(user, clientId);
-        }
-    }
+/*
+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.Security.Claims;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Identity;
+using Streetwriters.Common.Enums;
+using Streetwriters.Common.Models;
+
+namespace Streetwriters.Identity.Services
+{
+    public class UserService
+    {
+        private static SubscriptionType? GetUserSubscriptionStatus(string clientId, User user)
+        {
+            var claimKey = GetClaimKey(clientId);
+            var status = user.Claims.FirstOrDefault((c) => c.ClaimType == claimKey).ClaimValue;
+            switch (status)
+            {
+                case "basic":
+                    return SubscriptionType.BASIC;
+                case "trial":
+                    return SubscriptionType.TRIAL;
+                case "premium":
+                    return SubscriptionType.PREMIUM;
+                case "premium_canceled":
+                    return SubscriptionType.PREMIUM_CANCELED;
+                case "premium_expired":
+                    return SubscriptionType.PREMIUM_EXPIRED;
+                default:
+                    return null;
+            }
+        }
+
+        private static SubscriptionPlan? GetUserSubscriptionPlan(string clientId, User user)
+        {
+            var claimKey = GetClaimKey(clientId);
+            var status = user.Claims.FirstOrDefault((c) => c.ClaimType == claimKey).ClaimValue;
+            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;
+                default:
+                    return null;
+            }
+        }
+
+        public static bool IsSMSMFAAllowed(string clientId, User user)
+        {
+            var legacyStatus = GetUserSubscriptionStatus(clientId, user);
+            var status = GetUserSubscriptionPlan(clientId, user);
+            if (legacyStatus == null && status == null) return false;
+            return legacyStatus == SubscriptionType.PREMIUM ||
+                    legacyStatus == SubscriptionType.PREMIUM_CANCELED ||
+                    status == SubscriptionPlan.PRO ||
+                    status == SubscriptionPlan.EDUCATION ||
+                    status == SubscriptionPlan.BELIEVER;
+        }
+
+        public static Claim SubscriptionTypeToClaim(string clientId, SubscriptionType type)
+        {
+            var claimKey = GetClaimKey(clientId);
+            switch (type)
+            {
+                case SubscriptionType.BASIC:
+                    return new Claim(claimKey, "basic");
+                case SubscriptionType.TRIAL:
+                    return new Claim(claimKey, "trial");
+                case SubscriptionType.PREMIUM:
+                    return new Claim(claimKey, "premium");
+                case SubscriptionType.PREMIUM_CANCELED:
+                    return new Claim(claimKey, "premium_canceled");
+                case SubscriptionType.PREMIUM_EXPIRED:
+                    return new Claim(claimKey, "premium_expired");
+            }
+            return null;
+        }
+
+        public static Claim SubscriptionPlanToClaim(string clientId, SubscriptionPlan plan)
+        {
+            var claimKey = GetClaimKey(clientId);
+            switch (plan)
+            {
+                case SubscriptionPlan.FREE:
+                    return new Claim(claimKey, "free");
+                case SubscriptionPlan.BELIEVER:
+                    return new Claim(claimKey, "believer");
+                case SubscriptionPlan.EDUCATION:
+                    return new Claim(claimKey, "education");
+                case SubscriptionPlan.ESSENTIAL:
+                    return new Claim(claimKey, "essential");
+                case SubscriptionPlan.PRO:
+                    return new Claim(claimKey, "pro");
+            }
+            return null;
+        }
+
+        public static string GetClaimKey(string clientId)
+        {
+            return $"{clientId}:status";
+        }
+
+        public static async Task<bool> IsUserValidAsync(UserManager<User> userManager, User user, string clientId)
+        {
+            return user != null && await userManager.IsInRoleAsync(user, clientId);
+        }
+    }
 }

Streetwriters.Identity/Startup.cs

@@ -19,6 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 using System;
 using System.IO;
+using System.Security.Claims;
 using System.Threading.RateLimiting;
 using AspNetCore.Identity.Mongo;
 using IdentityServer4.MongoDB.Entities;
@@ -31,6 +32,7 @@ using IdentityServer4.Stores;
 using IdentityServer4.Validation;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.HttpOverrides;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.RateLimiting;
@@ -137,6 +139,7 @@ namespace Streetwriters.Identity
 
             services.AddRateLimiter(options =>
             {
+                options.RejectionStatusCode = StatusCodes.Status429TooManyRequests;
                 options.AddSlidingWindowLimiter("strict", options =>
                 {
                     options.PermitLimit = 30;
@@ -145,17 +148,27 @@ namespace Streetwriters.Identity
                     options.QueueProcessingOrder = QueueProcessingOrder.OldestFirst;
                     options.QueueLimit = 0;
                 });
-            });
 
-            services.AddAuthorization(options =>
-            {
-                options.AddPolicy("mfa", policy =>
+                options.AddPolicy("super_strict", (context) =>
                 {
-                    policy.AddAuthenticationSchemes("Bearer+jwt");
-                    policy.RequireClaim("scope", Config.MFA_GRANT_TYPE_SCOPE);
+                    var key = context.User?.FindFirstValue("sub") ?? "default";
+                    return RateLimitPartition.GetSlidingWindowLimiter(key, (key) => new SlidingWindowRateLimiterOptions
+                    {
+                        PermitLimit = 6,
+                        Window = TimeSpan.FromMinutes(1),
+                        SegmentsPerWindow = 2,
+                        QueueProcessingOrder = QueueProcessingOrder.OldestFirst,
+                        QueueLimit = int.MaxValue,
+                        AutoReplenishment = true
+                    });
                 });
             });
 
+            services.AddAuthorizationBuilder().AddPolicy("mfa", policy =>
+            {
+                policy.AddAuthenticationSchemes("Bearer+jwt");
+                policy.RequireClaim("scope", Config.MFA_GRANT_TYPE_SCOPE);
+            });
 
             services.AddLocalApiAuthentication();
             services.AddAuthentication()
@@ -166,7 +179,7 @@ namespace Streetwriters.Identity
                 options.RequireHttpsMetadata = false;
                 options.TokenValidationParameters = new TokenValidationParameters
                 {
-                    ValidTypes = new[] { "at+jwt" },
+                    ValidTypes = ["at+jwt"],
                     ValidateAudience = false,
                     ValidateIssuerSigningKey = true,
                     ValidateIssuer = true,
@@ -231,6 +244,17 @@ namespace Streetwriters.Identity
                         await MessageHandlers.CreateSubscription.Process(message, userManager);
                     }
                 });
+
+                realm.Subscribe(SubscriptionServerTopics.CreateSubscriptionV2Topic, async (CreateSubscriptionMessageV2 message) =>
+               {
+                   using (var serviceScope = app.ApplicationServices.CreateScope())
+                   {
+                       var services = serviceScope.ServiceProvider;
+                       var userManager = services.GetRequiredService<UserManager<User>>();
+                       await MessageHandlers.CreateSubscriptionV2.Process(message, userManager);
+                   }
+               });
+
                 realm.Subscribe(SubscriptionServerTopics.DeleteSubscriptionTopic, async (DeleteSubscriptionMessage message) =>
                 {
                     using (var serviceScope = app.ApplicationServices.CreateScope())

docker-compose.yml

@@ -59,30 +59,11 @@ services:
       validate:
         condition: service_completed_successfully
     healthcheck:
-      test: echo 'db.runCommand("ping").ok' | mongosh mongodb://localhost:27017 --quiet
+      test: echo 'try { rs.status() } catch (err) { rs.initiate() }; db.runCommand("ping").ok' | mongosh mongodb://localhost:27017 --quiet
       interval: 40s
       timeout: 30s
       retries: 3
       start_period: 60s
-  # the notesnook sync server requires transactions which only work
-  # with a MongoDB replica set.
-  # This job just runs `rs.initiate()` on our mongodb instance
-  # upgrading it to a replica set. This is only required once but we running
-  # it multiple times is no issue.
-  initiate-rs0:
-    image: mongo:7.0.12
-    networks:
-      - notesnook
-    depends_on:
-      - notesnook-db
-    entrypoint: /bin/sh
-    command:
-      - -c
-      - |
-        mongosh mongodb://notesnook-db:27017 <<EOF
-          rs.initiate();
-          rs.status();
-        EOF
 
   notesnook-s3:
     image: minio/minio:RELEASE.2024-07-29T22-14-52Z
@@ -231,3 +212,4 @@ networks:
 volumes:
   dbdata:
   s3data:
+