import 'package:deep_voice/data/services/voice_interaction_service.dart';
import 'package:get/get.dart';
import 'dart:async';
import '../../../routes/app_routes.dart';
import '../../../data/services/classic_bluetooth_service.dart' as classic;
import '../../../core/utils/logger.dart';
import 'package:flutter/material.dart';
import 'package:permission_handler/permission_handler.dart';

/// 简化的配对控制器，仅用于显示已连接经典蓝牙设备和处理基本配对流程
class PairingController extends GetxController {
  static PairingController get to => Get.find();

  // 经典蓝牙服务
  late classic.ClassicBluetoothService _bluetoothService;

  // 是否开始搜索
  final _isSearching = false.obs;
  bool get isSearching => _isSearching.value;

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

  // 蓝牙服务是否可用
  final _isBluetoothServiceAvailable = true.obs;
  bool get isBluetoothServiceAvailable => _isBluetoothServiceAvailable.value;

  // 当前连接设备
  Rx<classic.BluetoothDevice?> get currentDevice =>
      _bluetoothService.currentDevice;

  // 连接设备列表
  RxList<classic.BluetoothDevice> get connectedDevices =>
      _bluetoothService.connectedDevices;

  // 错误信息
  RxString get errorMessage => _bluetoothService.errorMessage;

  // 连接设备列表（兼容旧代码）
  List<classic.BluetoothDevice> get connectedClassicDevices =>
      _bluetoothService.currentDevice.value != null
          ? [_bluetoothService.currentDevice.value!]
          : [];

  // 状态描述（用于UI显示）
  final statusDescription = 'initializing'.tr.obs; // 正在初始化...

  // 加载状态
  final isLoading = false.obs;

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

  /// 完整的初始化流程
  Future<void> _initialize() async {
    try {
      VoiceInteractionService.to.initialize();
      VoiceInteractionService.to.startService();

      isLoading.value = true;
      statusDescription.value = 'initializing'.tr; // 正在初始化...

      // 1. 获取蓝牙服务
      _bluetoothService = Get.find<classic.ClassicBluetoothService>();

      // 确保蓝牙服务已初始化
      if (!await _bluetoothService.initialize()) {
        Logger.error('蓝牙服务初始化失败');
        statusDescription.value =
            'bluetoothInitializationFailure'.tr; // 蓝牙服务初始化失败
        _isBluetoothServiceAvailable.value = false;
        isLoading.value = false;
        return;
      }

      // 设置连接监听器，确保在页面完全加载后设置，避免过早监听可能导致的问题
      _setupDeviceListeners();

      // 2. 检查权限
      statusDescription.value = 'checkingPermissions'.tr; // 正在检查权限...
      final hasPermission =
          await _bluetoothService.checkAndRequestPermissions();
      if (!hasPermission) {
        statusDescription.value = 'lackPermissions'.tr; // 缺少蓝牙权限
        isLoading.value = false;
        return;
      }

      // 3. 刷新设备列表
      statusDescription.value = 'searchingDevice'.tr; // 正在搜索设备...
      await refreshConnectedDevices();

      // 4. 处理结果
      if (_bluetoothService.connectedDevices.isNotEmpty) {
        statusDescription.value = 'findConnectedDevice'.tr; // 找到已连接的设备
        // 延迟跳转到主页
        _autoNavigateToHome();
      } else {
        // 没有找到设备
        statusDescription.value = 'notFound'.tr; // 未找到已连接的蓝牙设备
      }
    } catch (e) {
      Logger.error('初始化配对控制器失败: $e');
      statusDescription.value = 'initializationFailure'.tr; // 初始化失败
      _isBluetoothServiceAvailable.value = false;
    } finally {
      isLoading.value = false;
    }
  }

  /// 设置设备监听器
  void _setupDeviceListeners() {
    try {
      if (!_isBluetoothServiceAvailable.value) return;

      // 监听设备连接事件
      _bluetoothService.onDeviceConnected((device) {
        Logger.info('检测到蓝牙设备连接: ${device.name}');

        // 更新状态并跳转到主页
        statusDescription.value =
            '${'connectedDevice'.tr} ${device.name}'; // 已连接到设备:

        // 立即跳转到主页
        _navigateToHome();
      });
    } catch (e) {
      Logger.error('设置设备监听器失败: $e');
    }
  }

  /// 立即跳转到主页
  void _navigateToHome() {
    Get.offAllNamed(Routes.home);
  }

  /// 刷新设备
  Future<void> refreshConnectedDevices() async {
    try {
      isLoading.value = true;
      statusDescription.value = 'searchingDevice'.tr; // 正在搜索设备...

      final hasDevices = await _bluetoothService.refreshConnectedDevices();

      if (hasDevices) {
        statusDescription.value = 'findConnectedDevice'.tr; // 找到已连接的设备
        // 延迟跳转到主页
        _autoNavigateToHome();
      } else {
        // 没有找到设备
        statusDescription.value = 'notFound'.tr; // 未找到已连接的蓝牙设备
      }
    } catch (e) {
      Logger.error('刷新设备失败: $e');
      statusDescription.value = 'failedRefreshDevice'.tr; // 刷新设备失败
    } finally {
      isLoading.value = false;
    }
  }

  /// 自动跳转到主页
  void _autoNavigateToHome() {
    if (_bluetoothService.connectedDevices.isEmpty) return;

    Logger.info('已找到连接的设备，自动跳转到主页');

    Future.delayed(const Duration(milliseconds: 500), () {
      Get.offAllNamed(Routes.home);
    });
  }

  /// 打开系统蓝牙设置
  void openBluetoothSettings() {
    _bluetoothService.openBluetoothSettings();
  }

  /// 刷新设备（兼容旧代码）
  Future<void> refreshDevices() async {
    await refreshConnectedDevices();
  }

  /// 跳过连接
  void skipConnecting() {
    Get.offAllNamed(Routes.home);
  }
}