feat: proper socket implementation

lib/core/services/socket_service.dart

@@ -0,0 +1,82 @@
+import 'package:socket_io_client/socket_io_client.dart' as IO;
+import 'package:flutter/foundation.dart';
+import '../models/server_config.dart';
+
+class SocketService {
+  final ServerConfig serverConfig;
+  final String? authToken;
+  IO.Socket? _socket;
+
+  SocketService({required this.serverConfig, required this.authToken});
+
+  String? get sessionId => _socket?.id;
+  IO.Socket? get socket => _socket;
+
+  bool get isConnected => _socket?.connected == true;
+
+  Future<void> connect({bool force = false}) async {
+    if (_socket != null && _socket!.connected && !force) return;
+
+    try {
+      _socket?.dispose();
+    } catch (_) {}
+
+    final base = serverConfig.url.replaceFirst(RegExp(r'/+$'), '');
+    final path = '/ws/socket.io';
+
+    _socket = IO.io(
+      base,
+      IO.OptionBuilder()
+          .setTransports(['websocket'])
+          .setPath(path)
+          .setExtraHeaders(
+            authToken != null && authToken!.isNotEmpty
+                ? {
+                    'Authorization': 'Bearer $authToken',
+                  }
+                : {},
+          )
+          .build(),
+    );
+
+    _socket!.on('connect', (_) {
+      debugPrint('Socket connected: ${_socket!.id}');
+      if (authToken != null && authToken!.isNotEmpty) {
+        _socket!.emit('user-join', {
+          'auth': {'token': authToken}
+        });
+      }
+    });
+
+    _socket!.on('connect_error', (err) {
+      debugPrint('Socket connect_error: $err');
+    });
+
+    _socket!.on('disconnect', (reason) {
+      debugPrint('Socket disconnected: $reason');
+    });
+  }
+
+  void onChatEvents(void Function(Map<String, dynamic> event) handler) {
+    _socket?.on('chat-events', (data) {
+      try {
+        if (data is Map<String, dynamic>) {
+          handler(data);
+        } else if (data is Map) {
+          handler(Map<String, dynamic>.from(data));
+        }
+      } catch (_) {}
+    });
+  }
+
+  void offChatEvents() {
+    _socket?.off('chat-events');
+  }
+
+  void dispose() {
+    try {
+      _socket?.dispose();
+    } catch (_) {}
+    _socket = null;
+  }
+}