Add pre-testing version of the webinterface

ChatTwo/Http/Websocket.cs

@@ -0,0 +1,48 @@
+using ChatTwo.Http.MessageProtocol;
+using EmbedIO.WebSockets;
+using Newtonsoft.Json;
+
+namespace ChatTwo.Http;
+
+public class WebSocketServer : WebSocketModule {
+    private readonly SemaphoreSlim SendLock = new(1, 1);
+
+    public event EventHandler? OnClientConnected;
+
+    public WebSocketServer(string urlPath) : base(urlPath, true) {
+
+    }
+
+    protected override async Task OnMessageReceivedAsync(IWebSocketContext context, byte[] buffer, IWebSocketReceiveResult result)
+    {
+        // Unused method
+    }
+
+    protected override Task OnClientConnectedAsync(IWebSocketContext context)
+    {
+        Plugin.Log.Information($"Client connected: {context.Id}");
+        OnClientConnected?.Invoke(this, EventArgs.Empty);
+        return base.OnClientConnectedAsync(context);
+    }
+
+    protected override Task OnClientDisconnectedAsync(IWebSocketContext context)
+    {
+        Plugin.Log.Information($"Client disconnected: {context.Id}");
+        return base.OnClientConnectedAsync(context);
+    }
+
+    protected override void Dispose(bool disposing) {
+        base.Dispose(disposing);
+
+        SendLock.Dispose();
+    }
+
+    public void BroadcastMessage(BaseOutboundMessage message) {
+        Task.Run(async () => {
+            using (await SendLock.UseWaitAsync()) {
+                var serializedData = JsonConvert.SerializeObject(message);
+                await BroadcastAsync(serializedData);
+            }
+        });
+    }
+}