fix: implement safe map casting for socket events and add support for conversation deletion updates

lib/features/messaging/data/socket_service.dart

@@ -37,6 +37,7 @@ class SocketService {
   final _connectionRequestController = StreamController<Map<String, dynamic>>.broadcast();
   final _connectionResponseController = StreamController<Map<String, dynamic>>.broadcast();
   final _deliveredController = StreamController<Map<String, dynamic>>.broadcast();
+  final _conversationDeletedController = StreamController<Map<String, dynamic>>.broadcast();
 
   Stream<ChatMessage> get onNewMessage => _messageController.stream;
   Stream<Map<String, dynamic>> get onTypingStart => _typingStartController.stream;
@@ -50,8 +51,18 @@ class SocketService {
   Stream<Map<String, dynamic>> get onConnectionRequest => _connectionRequestController.stream;
   Stream<Map<String, dynamic>> get onConnectionResponse => _connectionResponseController.stream;
   Stream<Map<String, dynamic>> get onMessageDelivered => _deliveredController.stream;
+  Stream<Map<String, dynamic>> get onConversationDeleted => _conversationDeletedController.stream;
   bool get isConnected => _isConnected;
 
+  /// Safely cast socket.io data to Map<String, dynamic>.
+  /// socket_io_client in Dart sometimes delivers maps as Map<dynamic, dynamic>
+  /// which fails a direct `as Map<String, dynamic>` cast and silently drops events.
+  static Map<String, dynamic> _toStringMap(dynamic data) {
+    if (data is Map<String, dynamic>) return data;
+    if (data is Map) return Map<String, dynamic>.from(data);
+    return <String, dynamic>{};
+  }
+
   Future<void> connect() async {
     final token = await SecureStorage.getAccessToken();
     if (token == null) {
@@ -153,7 +164,9 @@ class SocketService {
     // Listen for events
     _socket!.on('new_message', (data) {
       try {
-        final message = ChatMessage.fromJson(data as Map<String, dynamic>);
+        // socket.io in Dart may deliver data as Map<dynamic, dynamic> — cast safely
+        final json = _toStringMap(data);
+        final message = ChatMessage.fromJson(json);
         // Auto-ack delivery so sender gets real-time double-tick
         try {
           _socket?.emit('message_received', {
@@ -162,31 +175,31 @@ class SocketService {
           });
         } catch (_) {}
         _messageController.add(message);
-      } catch (e) {
-        _log.e('Error parsing new_message: $e');
+      } catch (e, stack) {
+        _log.e('Error parsing new_message: $e\nRaw data: $data', error: e, stackTrace: stack);
       }
     });
 
     _socket!.on('typing_start', (data) {
-      _typingStartController.add(Map<String, dynamic>.from(data as Map));
+      _typingStartController.add(_toStringMap(data));
     });
 
     _socket!.on('typing_stop', (data) {
-      _typingStopController.add(Map<String, dynamic>.from(data as Map));
+      _typingStopController.add(_toStringMap(data));
     });
 
     _socket!.on('user_status_change', (data) {
-      _statusController.add(Map<String, dynamic>.from(data as Map));
+      _statusController.add(_toStringMap(data));
     });
 
     _socket!.on('messages_read', (data) {
-      _readController.add(Map<String, dynamic>.from(data as Map));
+      _readController.add(_toStringMap(data));
     });
 
     // Support chat events
     _socket!.on('support_new_message', (data) {
       try {
-        final message = SupportMessage.fromJson(data as Map<String, dynamic>);
+        final message = SupportMessage.fromJson(_toStringMap(data));
         _supportMessageController.add(message);
       } catch (e) {
         _log.e('Error parsing support_new_message: $e');
@@ -194,24 +207,29 @@ class SocketService {
     });
 
     _socket!.on('support_typing_start', (data) {
-      _supportTypingStartController.add(Map<String, dynamic>.from(data as Map));
+      _supportTypingStartController.add(_toStringMap(data));
     });
 
     _socket!.on('support_typing_stop', (data) {
-      _supportTypingStopController.add(Map<String, dynamic>.from(data as Map));
+      _supportTypingStopController.add(_toStringMap(data));
     });
 
     // Connection request events (real-time updates)
     _socket!.on('connection_request', (data) {
-      _connectionRequestController.add(Map<String, dynamic>.from(data as Map));
+      _connectionRequestController.add(_toStringMap(data));
     });
 
     _socket!.on('connection_response', (data) {
-      _connectionResponseController.add(Map<String, dynamic>.from(data as Map));
+      _connectionResponseController.add(_toStringMap(data));
     });
 
     _socket!.on('message_delivered', (data) {
-      _deliveredController.add(Map<String, dynamic>.from(data as Map));
+      _deliveredController.add(_toStringMap(data));
+    });
+
+    // Conversation deleted by the other party — remove from local state
+    _socket!.on('conversation_deleted', (data) {
+      _conversationDeletedController.add(_toStringMap(data));
     });
 
     _socket!.connect();
@@ -351,5 +369,6 @@ class SocketService {
     _connectionRequestController.close();
     _connectionResponseController.close();
     _deliveredController.close();
+    _conversationDeletedController.close();
   }
 }