import 'dart:async';
import 'package:flutter/cupertino.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:get_it/get_it.dart';
import 'package:maibu_satabot_v2/features/devices/domain/entities/running_status_entity.dart';
import 'package:maibu_satabot_v2/features/devices/domain/entities/gps_entity.dart';

import '../../../../core/logging/i_logger_service.dart';
import '../../../../core/network/net_message_dispatcher.dart';
import 'device_status_state.dart';

/// 🔥 简化版:直接照搬 RemoteControlCubit 模式,不用 BLoC 事件机制
class DeviceStatusCubit extends Cubit<DeviceStatusState> {
  final NetMessageDispatcher _dispatcher;
  final ILoggerService _logger = GetIt.I<ILoggerService>();
  StreamSubscription? _stringMessageSub;

  DeviceStatusCubit(this._dispatcher) : super(DeviceStatusInitial()) {
    _initStringMessageListener();
  }

  void _initStringMessageListener() {
    debugPrint('🔗 [DeviceStatusCubit] 初始化 0x02 监听器');
    _logger.log('🔗 [DeviceStatusCubit] 初始化 0x02 监听器');
    
    _stringMessageSub?.cancel();

    _stringMessageSub = _dispatcher.onStringMessageOfdeviceStatus().listen((message) {
      if (message.isEmpty) {
        return;
      }

      try {
        final fields = message.trim().split(',');

        if (fields.length < 18) {
          debugPrint('⚠️ [DeviceStatusCubit] 字段不足:${fields.length}');
          if (!isClosed) {
            emit(DeviceStatusError('字段不足,期望≥18,实际:${fields.length}'));
          }
          return;
        }

        final status = RunningStatusEntity.fromFields(fields);
        final gps = GPSEntity(status.latitude, status.longitude);

        //debugPrint('✅ [DeviceStatusCubit] 解析成功:Lat=${gps.latitude}, Lng=${gps.longitude}');
        
        if (!isClosed) {
          emit(DeviceStatusUpdated(status, gps));
        }
      } catch (e) {
        debugPrint('❌ [DeviceStatusCubit] 解析异常:$e');
        _logger.log('❌ [DeviceStatusCubit] 解析异常:$e');
        if (!isClosed) {
          emit(DeviceStatusError('解析失败:$e'));
        }
      }
    });

    debugPrint('✅ [DeviceStatusCubit] 监听器已建立');
    _logger.log('✅ [DeviceStatusCubit] 监听器已建立');
  }

  void reset() {
    debugPrint('🔄 [DeviceStatusCubit] 重置状态');
    emit(DeviceStatusInitial());
  }

  @override
  Future<void> close() {
    debugPrint('🚫 [DeviceStatusCubit] 关闭,取消订阅');
    _stringMessageSub?.cancel();
    return super.close();
  }
}