import 'package:get/get.dart';
import 'dart:async';
import '../../../routes/app_routes.dart';
import '../../../data/services/classic_bluetooth_service.dart';
import '../../../data/services/bluetooth_media_button_service.dart';
import '../../../core/utils/logger.dart';
import 'package:flutter/material.dart';
import '../../explore/controllers/explore_controller.dart';

// 连接状态枚举
enum ConnectionStatus {
  disconnected, // 未连接
  connecting, // 连接中
  connected, // 已连接
  failed // 连接失败
}

class HomeController extends GetxController {
  static HomeController get to => Get.find();
  final ExploreController exploreController = Get.find<ExploreController>();

  // 经典蓝牙服务
  late ClassicBluetoothService _bluetoothService;

  // 蓝牙媒体按钮服务
  late BluetoothMediaButtonService _mediaButtonService;

  // 媒体按钮订阅
  StreamSubscription<MediaButtonEvent>? _mediaButtonSubscription;

  // 设备连接状态
  final _isConnected = false.obs;
  bool get isConnected => _isConnected.value;

  // 连接状态
  final _connectionStatus = ConnectionStatus.disconnected.obs;
  ConnectionStatus get connectionStatus => _connectionStatus.value;

  // 电池状态（模拟数据）
  final _deviceBattery = Rx<int?>(null);
  int? get deviceBattery => _deviceBattery.value;

  // 固件版本（模拟数据）
  final String firmwareVersion = 'v2.4.1';

  // 蓝牙设备信息
  final _deviceInfo = <String, dynamic>{}.obs;
  Map<String, dynamic> get deviceInfo => _deviceInfo.value;

  // 连接错误信息
  final _connectionErrorMsg = ''.obs;
  String get connectionErrorMsg => _connectionErrorMsg.value;

  // 当前连接的经典蓝牙设备
  List<BluetoothDevice> get connectedClassicDevices =>
      _bluetoothService.connectedDevices;

  // 蓝牙状态
  RxString get bluetoothState => _bluetoothService.bluetoothState;

  // 状态更新标志，防止多次重复更新
  bool _isUpdatingStatus = false;

  @override
  void onInit() {
    super.onInit();

    // 初始化蓝牙服务和状态监控
    _initBluetoothService();

    // 初始化蓝牙媒体按钮服务
    // _initMediaButtonService();

    // 电池模拟更新（实际应用中可以通过蓝牙获取）
    _simulateBatteryUpdate();
  }

  // 初始化蓝牙服务
  void _initBluetoothService() {
    try {
      // 获取经典蓝牙服务实例
      _bluetoothService = Get.find<ClassicBluetoothService>();

      // 更新当前连接状态
      _updateConnectionStatus();

      // 监听蓝牙连接状态变化
      _setupBluetoothListeners();
    } catch (e) {
      Logger.error('初始化蓝牙服务失败: $e');
      _connectionStatus.value = ConnectionStatus.failed;
    }
  }

  // 初始化蓝牙媒体按钮服务
  void _initMediaButtonService() {
    try {
      // 获取媒体按钮服务实例
      _mediaButtonService = Get.find<BluetoothMediaButtonService>();

      // 初始化媒体按钮服务
      _mediaButtonService.initialize().then((success) {
        if (success) {
          // 启动按钮监听
          _mediaButtonService.startButtonListening();

          // 设置按钮事件监听
          _setupMediaButtonListener();

          Logger.info('蓝牙媒体按钮服务初始化成功');
        } else {
          Logger.warning('蓝牙媒体按钮服务初始化失败');
        }
      });
    } catch (e) {
      Logger.error('初始化蓝牙媒体按钮服务失败: $e');
    }
  }

  // 设置媒体按钮事件监听
  void _setupMediaButtonListener() {
    // 取消之前的订阅
    _mediaButtonSubscription?.cancel();

    // 设置新的订阅
    _mediaButtonSubscription = _mediaButtonService.buttonEvents.listen((event) {
      Logger.info('收到媒体按钮事件: $event');

      // 处理按钮事件
      if (event.buttonType == MediaButtonType.playPause) {}
    });
  }

  // 电池电量模拟更新
  void _simulateBatteryUpdate() {
    // 每5分钟更新一次电池电量（模拟）
    Future.delayed(const Duration(seconds: 2), () {
      if (isConnected) {
        final timestamp = DateTime.now().millisecondsSinceEpoch;
        _deviceBattery.value = 50 + (timestamp % 50); // 50-99的随机值
      } else {
        _deviceBattery.value = null;
      }

      // 递归调用实现定时更新
      _simulateBatteryUpdate();
    });
  }

  // 更新连接状态
  void _updateConnectionStatus() {
    // 如果正在更新，则跳过
    if (_isUpdatingStatus) return;

    _isUpdatingStatus = true;

    try {
      // 检查当前设备
      final currentDevice = _bluetoothService.currentDevice.value;

      if (currentDevice != null) {
        _isConnected.value = true;
        _connectionStatus.value = ConnectionStatus.connected;
      } else {
        _isConnected.value = false;
        _connectionStatus.value = ConnectionStatus.disconnected;
      }

      update(); // 通知UI刷新
    } finally {
      _isUpdatingStatus = false;
    }
  }

  // 设置蓝牙监听器
  void _setupBluetoothListeners() {
    // 只监听当前设备和蓝牙状态

    // 监听当前设备状态
    ever(_bluetoothService.currentDevice, (device) {
      if (device != null) {
        _isConnected.value = true;
        _connectionStatus.value = ConnectionStatus.connected;
      } else if (_isConnected.value) {
        // 如果之前连接着设备但现在变为null，那么设备已断开
        _isConnected.value = false;
        _connectionStatus.value = ConnectionStatus.disconnected;
        _deviceBattery.value = null;
      }
      update();
    });

    // 蓝牙状态变化监听
    ever(_bluetoothService.bluetoothState, (state) {
      if (state == 'off') {
        _isConnected.value = false;
        _connectionStatus.value = ConnectionStatus.disconnected;
        _deviceBattery.value = null;
        update();
      }
    });
  }

  // 刷新设备信息
  Future<void> refreshDeviceInfo() async {
    return;
    // 如果正在更新，则跳过
    if (_isUpdatingStatus) return;

    _isUpdatingStatus = true;

    try {
      // 设置状态为连接中
      _connectionStatus.value = ConnectionStatus.connecting;
      update();

      // 刷新设备列表
      final hasDevices = await _bluetoothService.refreshConnectedDevices();

      // 更新状态
      _updateConnectionStatus();

      // 根据结果更新状态
      if (!hasDevices) {
        Logger.info('刷新设备：未找到设备');
        _connectionErrorMsg.value = '未找到已连接的设备';
      } else {
        _connectionErrorMsg.value = '';
        Logger.info('刷新设备：成功');
      }
    } catch (e) {
      Logger.error('刷新设备信息失败: $e');
      _connectionStatus.value = ConnectionStatus.failed;
      _connectionErrorMsg.value = 'failedDeviceInformation'.tr; // 无法获取设备信息
      update();
    } finally {
      _isUpdatingStatus = false;
    }
  }

  // 重新扫描设备
  void rescanDevices() {
    Get.toNamed(Routes.pairing);
  }

  // 打开翻译功能
  void openTranslation() {
    Get.toNamed(Routes.translation);
  }

  // 打开AI伴侣功能
  void openAIGirlfriend() {
    exploreController.onAIFeatureTap(2); //进入AI女友页面
  }

  // 展示AI功能
  void exploreAIFeatures() {
    // 简单实现，直接跳转到AI聊天页面
    Get.toNamed(Routes.chat);
  }

  // 获取连接状态对应的颜色
  Color getConnectionStatusColor() {
    switch (_connectionStatus.value) {
      case ConnectionStatus.connected:
        return Colors.green;
      case ConnectionStatus.connecting:
        return Colors.amber;
      case ConnectionStatus.failed:
        return Colors.red;
      case ConnectionStatus.disconnected:
      default:
        return Colors.grey;
    }
  }

  // 获取连接状态对应的文本
  String getConnectionStatusText() {
    // 如果蓝牙关闭，优先显示蓝牙状态
    if (_bluetoothService.bluetoothState.value == 'off') {
      return 'bluetoothOff'.tr; // 蓝牙已关闭
    }

    switch (_connectionStatus.value) {
      case ConnectionStatus.connected:
        return 'connected'.tr; // 已连接
      case ConnectionStatus.connecting:
        return 'connecting'.tr; // 连接中...
      case ConnectionStatus.failed:
        return 'connectionFailure'.tr; // 连接失败
      case ConnectionStatus.disconnected:
      default:
        return 'unconnected'.tr; // 未连接
    }
  }

  // 获取设备名称
  String getDeviceName() {
    final device = _bluetoothService.currentDevice.value;
    return device?.name ?? 'unknownEquipment'.tr; // 未知设备
  }

  // 获取信号强度（模拟数据）
  String getSignalStrength() {
    if (!_isConnected.value) {
      return 'zeroSignal'.tr; // 无信号
    }

    // 简单模拟信号强度
    final random = DateTime.now().millisecondsSinceEpoch % 3;
    switch (random) {
      case 0:
        return 'good'.tr; // 良好
      case 1:
        return 'fine'.tr; // 很好
      default:
        return 'excellent'.tr; // 极佳
    }
  }

  // 获取设备ID
  String getDeviceId() {
    final device = _bluetoothService.currentDevice.value;
    return device?.address ?? 'unknown'.tr; // 未知
  }

  @override
  void onClose() {
    // 取消按钮事件流订阅
    _mediaButtonSubscription?.cancel();

    super.onClose();
  }
}