import 'dart:async';
import 'dart:typed_data';
import 'package:get/get.dart';
import 'package:logger/logger.dart';
import 'package:jieli/jieli.dart';

/// 杰理测试控制器
class JieliTestController extends GetxController {
  static final Logger logger = Logger();
  
  // Jieli插件实例
  late Jieli jieli;
  
  // 状态变量
  var isScanning = false.obs;
  var deviceInfo = '未获取'.obs;
  var connectStatus = '未连接'.obs;
  var currentDevice = Rx<BleDevice?>(null);
  var scannedDevices = RxList<BleDevice>([]);
  var wakeupReceived = false.obs;
  var audioDataSize = 0.obs;
  var receivedFrames = 0.obs;
  var audioDataReceiving = false.obs;
  
  // 事件订阅
  StreamSubscription? _scanSubscription;
  StreamSubscription? _connectionSubscription;
  StreamSubscription? _wakeupSubscription;
  StreamSubscription? _audioSubscription;
  
  @override
  void onInit() {
    super.onInit();
    logger.d('JieliTestController 初始化');
    _initializeJieli();
  }
  
  @override
  void onClose() {
    logger.d('JieliTestController 关闭');
    _cancelAllSubscriptions();
    _disposeJieli();
    super.onClose();
  }
  
  /// 取消所有订阅
  void _cancelAllSubscriptions() {
    _scanSubscription?.cancel();
    _connectionSubscription?.cancel();
    _wakeupSubscription?.cancel();
    _audioSubscription?.cancel();
  }
  
  /// 初始化杰理SDK
  void _initializeJieli() {
    try {
      logger.d('初始化Jieli插件');
      jieli = Jieli();
      _setupEventListeners();
    } catch (e) {
      logger.e('初始化Jieli插件错误', error: e);
    }
  }
  
  /// 设置事件监听器
  void _setupEventListeners() {
    // 监听扫描结果
    _scanSubscription = jieli.scanResults.listen((devices) {
      // logger.d('扫描到设备: ${devices.length}个');
      scannedDevices.assignAll(devices);
    });
    
    // 监听连接状态
    _connectionSubscription = jieli.connectionState.listen((state) {
      logger.d('连接状态变化: $state');
      switch (state) {
        case ConnectionState.connected:
          connectStatus.value = '已连接';
          break;
        case ConnectionState.disconnected:
          connectStatus.value = '已断开';
          currentDevice.value = null;
          break;
        case ConnectionState.connecting:
          connectStatus.value = '连接中...';
          break;
        case ConnectionState.disconnecting:
          connectStatus.value = '断开中...';
          break;
        case ConnectionState.error:
          connectStatus.value = '连接错误';
          break;
      }
    });
    
    // 监听唤醒信号
    _wakeupSubscription = jieli.wakeupStream.listen((wakeup) {
      logger.d('收到唤醒信号');
      wakeupReceived.value = true;
      Get.snackbar('收到唤醒信号', '耳机发送了唤醒信号');
    });
    
    // 监听音频数据
    _audioSubscription = jieli.audioDataStream.listen((data) {
      // 更新音频数据统计
      audioDataSize.value += data.length;
      receivedFrames.value++;
      audioDataReceiving.value = true;
      
      // 每100帧更新一次日志，避免日志过多
      if (receivedFrames.value % 100 == 0) {
        logger.d('已接收音频数据: ${audioDataSize.value} 字节, ${receivedFrames.value} 帧');
      }
    });
  }
  
  /// 检查蓝牙状态
  Future<bool> checkBluetoothStatus() async {
    try {
      final isEnabled = await jieli.isBluetoothEnabled();
      if (!isEnabled) {
        logger.d('蓝牙未启用，请求启用蓝牙');
        return await jieli.requestBluetoothEnable();
      }
      return true;
    } catch (e) {
      logger.e('检查蓝牙状态错误', error: e);
      return false;
    }
  }
  
  /// 开始扫描设备
  Future<void> startScan() async {
    if (isScanning.value) return;
    
    final bluetoothReady = await checkBluetoothStatus();
    if (!bluetoothReady) {
      Get.snackbar('蓝牙未启用', '请启用蓝牙后再试');
      return;
    }
    
    try {
      logger.d('开始扫描设备');
      isScanning.value = true;
      
      // 清空之前的设备列表
      scannedDevices.clear();
      
      // 开始扫描，10秒后自动停止
      final success = await jieli.startScan(scanTimeout: 10000);
      
      if (!success) {
        logger.e('启动扫描失败');
        isScanning.value = false;
        Get.snackbar('扫描失败', '启动扫描设备失败，请检查蓝牙权限');
      }
      
      // 10秒后自动更新UI状态
      Future.delayed(Duration(milliseconds: 10000), () {
        isScanning.value = false;
      });
      
    } catch (e) {
      logger.e('扫描设备错误', error: e);
      isScanning.value = false;
      Get.snackbar('扫描错误', e.toString());
    }
  }
  
  /// 停止扫描
  Future<void> stopScan() async {
    if (!isScanning.value) return;
    
    try {
      logger.d('停止扫描');
      await jieli.stopScan();
      isScanning.value = false;
    } catch (e) {
      logger.e('停止扫描错误', error: e);
    }
  }
  
  /// 连接到指定设备
  Future<void> connectToDevice(BleDevice device) async {
    try {
      // 先断开当前连接
      if (currentDevice.value != null) {
        await disconnectDevice();
      }
      
      // 更新UI状态
      connectStatus.value = '连接中...';
      logger.d('连接设备: ${device.name} (${device.id})');
      
      // 重置音频和唤醒相关的状态
      wakeupReceived.value = false;
      audioDataSize.value = 0;
      receivedFrames.value = 0;
      audioDataReceiving.value = false;
      
      // 连接设备
      final success = await jieli.connect(device.id);
      
      if (success) {
        // 连接成功，更新当前设备
        currentDevice.value = device;
        deviceInfo.value = '设备名称: ${device.name}\n设备ID: ${device.id}\nRSSI: ${device.rssi} dBm';
        logger.d('设备连接成功');
      } else {
        deviceInfo.value = '连接失败';
        logger.d('设备连接失败');
      }
    } catch (e) {
      deviceInfo.value = '连接错误: ${e.toString()}';
      logger.e('连接设备错误', error: e);
    }
  }
  
  /// 断开设备连接
  Future<void> disconnectDevice() async {
    if (currentDevice.value == null) return;
    
    try {
      connectStatus.value = '断开中...';
      logger.d('断开设备连接');
      
      final success = await jieli.disconnect();
      
      if (success) {
        deviceInfo.value = '未连接设备';
        logger.d('设备断开连接成功');
      } else {
        logger.d('设备断开连接失败');
      }
      
    } catch (e) {
      logger.e('断开设备错误', error: e);
    }
  }
  
  /// 发送开始录音命令
  Future<void> sendStartRecordingCommand() async {
    if (currentDevice.value == null) {
      Get.snackbar('操作失败', '未连接设备');
      return;
    }
    
    try {
      logger.d('发送开始录音命令');
      final success = await jieli.sendStartRecordingCommand();
      
      if (success) {
        Get.snackbar('命令已发送', '已发送开始录音命令');
        logger.d('开始录音命令发送成功');
      } else {
        Get.snackbar('命令发送失败', '发送开始录音命令失败');
        logger.d('开始录音命令发送失败');
      }
    } catch (e) {
      logger.e('发送开始录音命令错误', error: e);
      Get.snackbar('命令错误', e.toString());
    }
  }
  
  /// 发送停止录音命令
  Future<void> sendStopRecordingCommand() async {
    if (currentDevice.value == null) {
      Get.snackbar('操作失败', '未连接设备');
      return;
    }
    
    try {
      logger.d('发送停止录音命令');
      final success = await jieli.sendStopRecordingCommand();
      
      if (success) {
        Get.snackbar('命令已发送', '已发送停止录音命令');
        logger.d('停止录音命令发送成功');
      } else {
        Get.snackbar('命令发送失败', '发送停止录音命令失败');
        logger.d('停止录音命令发送失败');
      }
    } catch (e) {
      logger.e('发送停止录音命令错误', error: e);
      Get.snackbar('命令错误', e.toString());
    }
  }
  
  /// 清理资源
  void _disposeJieli() {
    try {
      logger.d('释放Jieli插件资源');
      jieli.dispose();
    } catch (e) {
      logger.e('释放Jieli插件资源错误', error: e);
    }
  }
}