global: add very basic server versioning

Notesnook.API/Startup.cs

@@ -226,6 +226,7 @@ namespace Notesnook.API
             app.UseResponseCompression();
 
             app.UseCors("notesnook");
+            app.UseVersion();
 
             app.UseWamp(WampServers.NotesnookServer, (realm, server) =>
             {

Streetwriters.Common/Extensions/AppBuilderExtensions.cs

@@ -19,6 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 using System;
 using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.DependencyInjection;
 using WampSharp.AspNetCore.WebSockets.Server;
 using WampSharp.Binding;
@@ -29,6 +30,18 @@ namespace Streetwriters.Common.Extensions
 {
     public static class AppBuilderExtensions
     {
+        public static IApplicationBuilder UseVersion(this IApplicationBuilder app)
+        {
+            app.Map("/version", (app) =>
+            {
+                app.Run(async context =>
+                {
+                    await context.Response.WriteAsync(Version.AsString());
+                });
+            });
+            return app;
+        }
+
         public static IApplicationBuilder UseWamp<T>(this IApplicationBuilder app, WampServer<T> server, Action<IWampHostedRealm, WampServer<T>> action) where T : new()
         {
             WampHost host = new WampHost();

Streetwriters.Common/Version.cs

@@ -0,0 +1,32 @@
+/*
+This file is part of the Notesnook Sync Server project (https://notesnook.com/)
+
+Copyright (C) 2022 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
+{
+    public class Version
+    {
+        public const int MAJOR = 2;
+        public const int MINOR = 3;
+        public const int PATCH = 0;
+        public static string AsString()
+        {
+            return $"{Version.MAJOR}.{Version.MINOR}.{Version.PATCH}";
+        }
+    }
+}

Streetwriters.Identity/Startup.cs

@@ -177,6 +177,7 @@ namespace Streetwriters.Identity
             }
 
             app.UseCors("notesnook");
+            app.UseVersion();
 
             app.UseRouting();
 

Streetwriters.Messenger/Startup.cs

@@ -102,6 +102,7 @@ namespace Streetwriters.Messenger
             }
 
             app.UseCors("notesnook");
+            app.UseVersion();
 
             app.UseRouting();