🐛 Fix swaggergen

DysonNetwork.Sphere/Connection/WebSocketController.cs

@@ -1,6 +1,9 @@
+using System.Collections.Concurrent;
 using System.Net.WebSockets;
+using DysonNetwork.Sphere.Account;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
+using Swashbuckle.AspNetCore.Annotations;
 
 namespace DysonNetwork.Sphere.Connection;
 
@@ -8,14 +11,70 @@ namespace DysonNetwork.Sphere.Connection;
 [Route("/ws")]
 public class WebSocketController : ControllerBase
 {
+    // Concurrent dictionary to store active WebSocket connections.
+    // Key: Tuple (AccountId, DeviceId); Value: WebSocket and CancellationTokenSource
+    private static readonly ConcurrentDictionary<
+        (long AccountId, string DeviceId),
+        (WebSocket Socket, CancellationTokenSource Cts)
+    > ActiveConnections =
+        new ConcurrentDictionary<(long, string), (WebSocket, CancellationTokenSource)>();
+
     [Route("/ws")]
     [Authorize]
+    [SwaggerIgnore]
     public async Task TheGateway()
     {
         if (HttpContext.WebSockets.IsWebSocketRequest)
         {
+            // Get AccountId from HttpContext
+            if (
+                !HttpContext.Items.TryGetValue("CurrentUser", out var currentUserValue)
+                || currentUserValue is not Account.Account currentUser
+            )
+            {
+                HttpContext.Response.StatusCode = StatusCodes.Status401Unauthorized;
+                return;
+            }
+            long accountId = currentUser.Id;
+
+            // Verify deviceId
+            if (string.IsNullOrEmpty(deviceId))
+            {
+                HttpContext.Response.StatusCode = StatusCodes.Status400BadRequest;
+                return;
+            }
+
             using var webSocket = await HttpContext.WebSockets.AcceptWebSocketAsync();
-            await _ConnectionEventLoop(webSocket);
+            // Create a CancellationTokenSource for this connection
+            var cts = new CancellationTokenSource();
+            var connectionKey = (accountId, deviceId);
+
+            // Add the connection to the active connections dictionary
+            if (!ActiveConnections.TryAdd(connectionKey, (webSocket, cts)))
+            {
+                // Failed to add
+                await webSocket.CloseAsync(
+                    WebSocketCloseStatus.InternalServerError,
+                    "Failed to establish connection.",
+                    CancellationToken.None
+                );
+                return;
+            }
+
+            try
+            {
+                await _ConnectionEventLoop(webSocket, connectionKey, cts.Token);
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"WebSocket Error: {ex.Message}");
+            }
+            finally
+            {
+                // Connection is closed, remove it from the active connections dictionary
+                ActiveConnections.TryRemove(connectionKey, out _);
+                cts.Dispose();
+            }
         }
         else
         {
@@ -23,28 +82,67 @@ public class WebSocketController : ControllerBase
         }
     }
 
-    private static async Task _ConnectionEventLoop(WebSocket webSocket)
+    private static async Task _ConnectionEventLoop(
+        WebSocket webSocket,
+        (long AccountId, string DeviceId) connectionKey,
+        CancellationToken cancellationToken
+    )
     {
-        // For now, it's echo
+        // Buffer for receiving messages.
         var buffer = new byte[1024 * 4];
-        var receiveResult = await webSocket.ReceiveAsync(
-            new ArraySegment<byte>(buffer), CancellationToken.None);
-
-        while (!receiveResult.CloseStatus.HasValue)
+        try
         {
-            await webSocket.SendAsync(
-                new ArraySegment<byte>(buffer, 0, receiveResult.Count),
-                receiveResult.MessageType,
-                receiveResult.EndOfMessage,
-                CancellationToken.None);
+            // We don't handle receiving data, so we ignore the return.
+            var receiveResult = await webSocket.ReceiveAsync(
+                new ArraySegment<byte>(buffer),
+                cancellationToken
+            );
+            while (!receiveResult.CloseStatus.HasValue)
+            {
+                // Keep connection alive and wait for close requests
+                receiveResult = await webSocket.ReceiveAsync(
+                    new ArraySegment<byte>(buffer),
+                    cancellationToken
+                );
+            }
 
-            receiveResult = await webSocket.ReceiveAsync(
-                new ArraySegment<byte>(buffer), CancellationToken.None);
+            // Close connection
+            await webSocket.CloseAsync(
+                receiveResult.CloseStatus.Value,
+                receiveResult.CloseStatusDescription,
+                cancellationToken
+            );
         }
+        catch (OperationCanceledException)
+        {
+            // Connection was canceled, close it gracefully
+            if (
+                webSocket.State != WebSocketState.Closed
+                && webSocket.State != WebSocketState.Aborted
+            )
+            {
+                await webSocket.CloseAsync(
+                    WebSocketCloseStatus.NormalClosure,
+                    "Connection closed by server",
+                    CancellationToken.None
+                );
+            }
+        }
+    }
 
-        await webSocket.CloseAsync(
-            receiveResult.CloseStatus.Value,
-            receiveResult.CloseStatusDescription,
-            CancellationToken.None);
+    // This method will be used later to send messages to specific connections
+    public static async Task SendMessageAsync(long accountId, string deviceId, string message)
+    {
+        if (ActiveConnections.TryGetValue((accountId, deviceId), out var connection))
+        {
+            var buffer = System.Text.Encoding.UTF8.GetBytes(message);
+            await connection.Socket.SendAsync(
+                new ArraySegment<byte>(buffer, 0, buffer.Length),
+                WebSocketMessageType.Text,
+                true,
+                connection.Cts.Token
+            );
+        }
     }
 }
+