import 'dart:async';
import 'package:quiz_app/core/endpoint/api_endpoint.dart';
import 'package:socket_io_client/socket_io_client.dart' as io;

class SocketService {
  late io.Socket socket;

  final _roomMessageController = StreamController<Map<String, dynamic>>.broadcast();
  final _chatMessageController = StreamController<Map<String, dynamic>>.broadcast();
  final _errorController = StreamController<String>.broadcast();

  Stream<Map<String, dynamic>> get roomMessages => _roomMessageController.stream;
  Stream<Map<String, dynamic>> get chatMessages => _chatMessageController.stream;
  Stream<String> get errors => _errorController.stream;

  void initSocketConnection() {
    socket = io.io(
      APIEndpoint.baseUrl,
      io.OptionBuilder()
          .setTransports(['websocket']) // WebSocket mode
          .disableAutoConnect()
          .build(),
    );

    socket.connect();

    socket.onConnect((_) {
      print('Connected: ${socket.id}');
    });

    socket.onDisconnect((_) {
      print('Disconnected');
    });

    socket.on('connection_response', (data) {
      print('Connection response: $data');
    });

    socket.on('room_message', (data) {
      print('Room Message: $data');
      _roomMessageController.add(Map<String, dynamic>.from(data));
    });

    socket.on('receive_message', (data) {
      print('Message from ${data['from']}: ${data['message']}');
      _chatMessageController.add(Map<String, dynamic>.from(data));
    });

    socket.on('error', (data) {
      print('Socket error: $data');
      _errorController.add(data.toString());
    });
  }

  void joinRoom({required String sessionCode, required String userId}) {
    socket.emit('join_room', {
      'session_code': sessionCode,
      'user_id': userId,
    });
  }

  void leaveRoom({required String sessionId, String username = "anonymous"}) {
    socket.emit('leave_room', {
      'session_id': sessionId,
      'username': username,
    });
  }

  void sendMessage({
    required String sessionId,
    required String message,
    String username = "anonymous",
  }) {
    socket.emit('send_message', {
      'session_id': sessionId,
      'message': message,
      'username': username,
    });
  }

  void dispose() {
    socket.dispose();
    _roomMessageController.close();
    _chatMessageController.close();
    _errorController.close();
  }
}