TTMusic/entry/src/main/ets/common/service/UnifiedPlayerService.ets

import { VideoItem } from '../../viewmodel/VideoItem';
import { PlayerManager, IPlayerManager, PlayerStateCallback } from './PlayerManager';
import { PlayerStateModel, PlayerState, PlayerStateListener, PlayMode, PlayerError, PlayerErrorType } from './PlayerStateModel';
import { PlaylistModel } from './PlaylistModel';
import { PlayProgress, WidgetData, WidgetSize, WidgetTheme } from '../widget/WidgetTypes';
import { IjkMediaPlayer, LogUtils } from '@ohos/ijkplayer';
import { common } from '@kit.AbilityKit';
import { PreferencesUtil, StrUtil } from '@pura/harmony-utils';
import { DataPersistenceService, PlaylistSyncService, PlaylistSyncListener, IDataPersistenceService, PlaylistData,
  PlayerStateData } from './DataPersistenceService';
import { StateSyncService, IStateSyncService, StateChangeCallback, WidgetControlCallback } from './StateSyncService';
import { ErrorRecoveryStrategy, IErrorRecoveryStrategy, ErrorContext, ErrorRecoveryAction } from './ErrorRecoveryStrategy';
import { EnhancedFormUpdateService, UpdateStats } from '../widget/EnhancedFormUpdateService';
import { AvSessionController } from '../../controller/AvSessionController';
import { avSession } from '@kit.AVSessionKit';
import json from '@ohos.util.json';

/**
 * 服务就绪状态详情接口
 */
export interface ServiceReadinessDetails {
  initialized: boolean;
  hasPlayerInstance: boolean;
  hasContext: boolean;
  dataRestored: boolean;
  playlistSize: number;
  currentIndex: number;
}

/**
 * 服务就绪信息接口
 */
export interface ServiceReadinessInfo {
  isReady: boolean;
  details: ServiceReadinessDetails;
}

/**
 * 初始化验证结果接口
 */
export interface InitializationValidation {
  isValid: boolean;
  errors: string[];
  warnings: string[];
}

/**
 * 统一播放器服务接口
 * 提供统一的播放控制接口，替代LocalMusic中的播放器逻辑
 */
export interface IPlayerService {
  // 播放控制 - 基于LocalMusic现有方法
  startPlayOrResumePlay(): Promise<void>;
  pause(): Promise<void>;
  stop(): Promise<void>;
  seekTo(position: string): Promise<void>;
  
  // 播放列表控制 - 基于LocalMusic现有方法
  playNext(): Promise<void>;
  playPrevious(): Promise<void>;
  playSongAtIndex(index: number): Promise<void>;
  
  // 状态查询 - 兼容LocalMusic数据结构
  getCurrentState(): PlayerState;
  getActualPlayingState(): boolean;
  getCurrentSong(): VideoItem | null;
  getPlaylist(): VideoItem[];
  getCurrentIndex(): number;
  getCurrentPosition(): number;
  
  // 数据恢复状态
  isDataRestorationCompleted(): boolean;
  waitForDataRestoration(maxWaitMs?: number): Promise<boolean>;
  forceDataRestoration(): Promise<boolean>;
  
  // 服务就绪状态检查
  isAllServicesReady(): boolean;
  waitForAllServicesReady(maxWaitMs?: number, checkDataRestore?: boolean): Promise<boolean>;
  getServiceReadinessInfo(): ServiceReadinessInfo;
  validateInitialization(): InitializationValidation;
  
  // 播放模式控制 - 基于LocalMusic现有功能
  setPlayMode(mode: number): void;
  getPlayMode(): number;
  
  // 音量和速度控制 - 基于LocalMusic现有功能
  setVolume(volume: number): void;
  setPlaybackSpeed(speed: number): void;
  
  // 播放列表管理
  setPlaylist(songs: VideoItem[], currentIndex?: number): void;
  addToPlaylist(song: VideoItem, index?: number): void;
  removeFromPlaylist(index: number): VideoItem | null;
  
  // 事件监听
  addStateListener(listener: PlayerStateListener): void;
  removeStateListener(listener: PlayerStateListener): void;
  
  // 初始化和清理
  initialize(context: common.UIAbilityContext): Promise<void>;
  release(): void;
}

/**
 * 统一播放器服务实现
 * 整合PlayerManager、PlayerStateModel和PlaylistModel
 */
export class UnifiedPlayerService implements IPlayerService, PlaylistSyncListener, StateChangeCallback, WidgetControlCallback, PlayerStateCallback {
  private static instance: UnifiedPlayerService | null = null;
  private playerManager: IPlayerManager;
  private stateModel: PlayerStateModel;
  private playlistModel: PlaylistModel;
  private dataPersistence: IDataPersistenceService;
  private playlistSync: PlaylistSyncService;
  private stateSync: IStateSyncService;
  private errorRecovery: IErrorRecoveryStrategy;
  private widgetUpdateService: EnhancedFormUpdateService;
  private avSessionController: AvSessionController | null = null; 
  private context: common.UIAbilityContext | null = null;
  private progressTimer: number = -1;
  private isInitialized: boolean = false;
  private isDataRestored: boolean = false; // 新增：数据恢复完成标识

  private isPlayerPreparedForCurrentSong: boolean = false; // 新增：播放器是否已为当前歌曲准备就绪
  private currentRetryCount: number = 0;
  private lastAvSessionUpdate: number = 0; 
  private lastAvMetadataUpdate: number = 0; // 新增：上次元数据更新时间
  private avSessionUpdateTimer: number = -1; // 新增：系统播控更新防抖定时器
  private avMetadataUpdateTimer: number = -1; // 新增：元数据更新防抖定时器 

  private constructor() {
    this.playerManager = PlayerManager.getInstance();
    this.stateModel = new PlayerStateModel();
    this.playlistModel = new PlaylistModel();
    this.dataPersistence = DataPersistenceService.getInstance();
    this.playlistSync = PlaylistSyncService.getInstance();
    this.stateSync = StateSyncService.getInstance();
    this.errorRecovery = ErrorRecoveryStrategy.getInstance();
    this.widgetUpdateService = EnhancedFormUpdateService.getInstance();
    
    LogUtils.getInstance().LOGI('UnifiedPlayerService: Instance created');
  }

  public static getInstance(): UnifiedPlayerService {
    if (!UnifiedPlayerService.instance) {
      UnifiedPlayerService.instance = new UnifiedPlayerService();
    }
    return UnifiedPlayerService.instance;
  }  
async initialize(context: common.UIAbilityContext): Promise<void> {
    if (this.isInitialized && this.context === context) {
      LogUtils.getInstance().LOGI('UnifiedPlayerService已经初始化过了');
      return;
    }

    try {
      console.log("Heanup2 UnifiedPlayerService: 开始快速初始化服务");
      this.context = context;
      
      // 快速初始化核心组件
      this.playerManager.setStateCallback(this);
      this.widgetUpdateService.setAppContext(context);
      
      // 设置同步监听器
      this.playlistSync.addSyncListener(this);
      this.stateSync.subscribeToStateChanges(this);
      this.stateSync.subscribeToWidgetControl(this);
      
      // 设置状态模型监听器，自动广播状态变化
      class StateListenerImpl implements PlayerStateListener {
        private stateSync: IStateSyncService;
        private unifiedService: UnifiedPlayerService;
        
        constructor(stateSync: IStateSyncService, unifiedService: UnifiedPlayerService) {
          this.stateSync = stateSync;
          this.unifiedService = unifiedService;
        }
        
        onStateChanged(state: PlayerState): void {
          this.stateSync.broadcastState(state);
          
          // 使用防抖机制更新系统播控，避免频繁更新
          this.unifiedService.updateSessionPlayState();
          // 状态变化时更新卡片
          this.unifiedService.updateWidgetsForStateChange();
        }
        onSongChanged(song: VideoItem): void {
          this.stateSync.broadcastSongChange(song);
          
          // 使用防抖机制更新系统播控元数据，避免频繁更新
          this.unifiedService.updateAvSessionMetadata(song);
          
          // 移除重复的播放状态更新，让onPlaybackStarted处理
          
          // 歌曲变化时更新卡片
          this.unifiedService.updateWidgetsForSongChange(song);
        }
        onProgressChanged(progress: PlayProgress): void {
          this.stateSync.broadcastProgress(progress);
          // 进度变化时更新卡片（防抖处理）
          this.unifiedService.updateWidgetsForProgressChange(progress);
        }
        onError(error: PlayerError): void {
          LogUtils.getInstance().LOGI(`Player error: ${error.message}`);
        }
      }
      const stateListener = new StateListenerImpl(this.stateSync, this);
      this.stateModel.addStateListener(stateListener);
      
      this.setupProgressTimer();
      this.isInitialized = true;
      
      // 异步初始化耗时组件，避免阻塞
      this.initializeHeavyComponentsAsync(context);
      
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Core initialization completed');
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService initialization error: ${error}`);
      throw new Error(`初始化失败: ${error}`);
    }
  }

  /**
   * 异步初始化耗时组件
   */
  private initializeHeavyComponentsAsync(context: common.UIAbilityContext): void {
    setTimeout(async () => {
      try {
        console.log("Heanup2 UnifiedPlayerService: 开始异步初始化耗时组件");
        
        // 并行初始化各个服务以提高效率
        const initPromises = [
          this.playerManager.initialize(context),
          this.dataPersistence.initialize(context),
          this.playlistSync.initialize(context),
          this.stateSync.initialize(context)
        ];
        
        await Promise.all(initPromises);
        
        // 立即尝试快速恢复关键数据（从AppStorage）
        await this.fastRestoreFromMemory();
        
        
        this.initializeAvSession();
        
        // 完整的数据恢复（从持久化存储）
        await this.restorePersistedState();
        
        console.log("Heanup2 UnifiedPlayerService: 异步组件初始化完成");
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Heavy components initialized');
      } catch (error) {
        console.log(`Heanup2 UnifiedPlayerService: 异步组件初始化失败: ${error}`);
        LogUtils.getInstance().LOGI(`UnifiedPlayerService heavy components init error: ${error}`);
        // 即使失败也设置数据恢复完成，避免无限等待
        this.isDataRestored = true;
      }
    }, 10); // 缩短延迟，让数据恢复更快开始
  }

  // 播放控制方法
  async startPlayOrResumePlay(): Promise<void> {
    try {
      console.log("Heanup2 UnifiedPlayerService: 开始恢复播放");
      
      // 统一的服务就绪检查 - 这是最核心的检查
      if (!this.isAllServicesReady()) {
        console.log("Heanup2 UnifiedPlayerService: 服务未就绪，等待服务初始化完成");
        const isReady = await this.waitForAllServicesReady(3000, false);
        if (!isReady) {
          const error = new Error('Services not ready for playback');
          await this.handlePlaybackError(error, PlayerErrorType.INITIALIZATION_ERROR);
          return;
        }
      }
      
      // 获取当前歌曲 - 如果没有就尝试恢复
      let currentSong = this.playlistModel.getCurrentSong();
      if (!currentSong) {
        console.log("Heanup2 UnifiedPlayerService: 没有可播放的歌曲，尝试恢复持久化状态");
        await this.restorePersistedState();
        currentSong = this.playlistModel.getCurrentSong();
        
        if (!currentSong) {
          console.log("Heanup2 UnifiedPlayerService: 恢复后仍然没有可播放的歌曲");
          await this.handlePlaybackError(new Error('No song to play'), PlayerErrorType.PLAYBACK_ERROR);
          return;
        }
        console.log("Heanup2 UnifiedPlayerService: 恢复成功，当前歌曲信息:"+json.stringify(currentSong));
      }
      
      this.stateModel.updateLoadingState(true);
      
      // 简化的播放器状态检查 - 检查是否可以从暂停恢复
      const ijkPlayer = this.playerManager.getIjkPlayer()!; // 服务就绪后播放器一定存在
      const shouldResumeFromPause = this.canResumeFromPause(ijkPlayer);
      
      if (shouldResumeFromPause) {
        console.log("Heanup2 UnifiedPlayerService: 从暂停状态恢复播放");
        return await this.resumeFromPause();
      }
      
      // 新歌播放前的必要检查
      await this.validateSongForPlayback(currentSong);
      
      // 设置播放器并开始播放
      await this.setupAndStartPlayback(currentSong);
      
    } catch (error) {
      this.stateModel.updateLoadingState(false);
      this.stateModel.updatePlayingState(false);
      await this.handlePlaybackError(error as Error, PlayerErrorType.PLAYBACK_ERROR);
    }
  }

  /**
   * 检查是否可以从暂停状态恢复播放
   */
  private canResumeFromPause(ijkPlayer: IjkMediaPlayer): boolean {
    const isPausedByManager = this.playerManager.isPausedState();
    const isCurrentlyPlaying = ijkPlayer.isPlaying();
    const playerDuration = ijkPlayer.getDuration();
    const hasValidMedia = playerDuration > 0;
    
    // 如果认为是暂停但没有有效媒体，清除假暂停状态
    if (isPausedByManager && !hasValidMedia) {
      console.log("Heanup2 UnifiedPlayerService: 检测到假暂停状态，清除暂停标记");
      this.playerManager.clearPausedState();
      this.isPlayerPreparedForCurrentSong = false;
      return false;
    }
    
    // 如果播放器正在播放，同步状态
    if (isCurrentlyPlaying) {
      this.syncPlayingState();
      return false; // 不需要恢复，已经在播放
    }
    
    // 检查是否可以从暂停恢复
    const canResume = isPausedByManager && 
      !isCurrentlyPlaying && 
      hasValidMedia && 
      this.isPlayerPreparedForCurrentSong;
      
    console.log(`Heanup2 UnifiedPlayerService: 暂停恢复检查 - canResume: ${canResume}`);
    return canResume;
  }

  /**
   * 同步播放状态
   */
  private syncPlayingState(): void {
    console.log("Heanup2 UnifiedPlayerService: 播放器正在播放，同步状态");
    this.stateModel.updateLoadingState(false);
    this.stateModel.updatePlayingState(true);
    this.playerManager.clearPausedState();
    this.startProgressTimer();
    this.updateSessionPlayState();
    this.updateWidgetsForStateChange();
  }

  /**
   * 从暂停状态恢复播放
   */
  private async resumeFromPause(): Promise<void> {
    try {
      console.log("Heanup2 UnifiedPlayerService: 直接从暂停状态恢复播放");
      this.stateModel.updateLoadingState(false);
      await this.playerManager.startPlayOrResumePlay();
      this.stateModel.updatePlayingState(true);
      this.startProgressTimer();
      
      setTimeout(() => this.updateProgress(), 100);
      this.saveCurrentState();
      this.updateSessionPlayState();
      await this.updateWidgetsForPlayStateChange();
    } catch (error) {
      throw new Error(`Resume from pause failed: ${error}`);
    }
  }

  /**
   * 验证歌曲是否可以播放
   */
  private async validateSongForPlayback(song: VideoItem): Promise<void> {
    // 检查文件是否存在（对于本地文件）
    if (!song.filePath.startsWith('http')) {
      const fileExists = await this.checkFileExists(song.filePath);
      if (!fileExists) {
        throw new Error(`File not found: ${song.filePath}`);
      }
    } else {
      // 检查网络连接（对于网络资源）
      const networkAvailable = await this.checkNetworkConnection();
      if (!networkAvailable) {
        throw new Error('Network not available');
      }
    }
  }

  /**
   * 设置播放器并开始播放
   */
  private async setupAndStartPlayback(song: VideoItem): Promise<void> {
    console.log(`Heanup2 UnifiedPlayerService: 设置播放器并开始播放: ${song.name}`);
    
    // 设置播放源和配置
    await this.setupPlayerForSong(song);
    
    // 准备播放器（实际播放会在 onPrepared 回调中开始）
    const preparedPlayer = this.playerManager.getIjkPlayer();
    if (preparedPlayer) {
      preparedPlayer.prepareAsync();
    }
    
    // 立即更新基础元数据（使用解析的duration），后续在播放器准备好后会用实际duration更新
    await this.updateAvSessionMetadata(song);
    this.restorePlaybackPosition(song);
    this.currentRetryCount = 0;
  }

  /**
   * 直接播放新歌曲，避免恢复逻辑干扰
   * 专为 playNext/playPrevious 设计
   */
  private async playNewSongDirectly(song: VideoItem | null): Promise<void> {
    if (!song) {
      throw new Error('No song provided for direct play');
    }

    this.stateModel.updateLoadingState(true);
    
    const playerInstance = this.playerManager.getIjkPlayer();
    if (!playerInstance) {
      throw new Error('Player not initialized');
    }

    // 检查文件是否存在（对于本地文件）
    if (!song.filePath.startsWith('http')) {
      const fileExists = await this.checkFileExists(song.filePath);
      if (!fileExists) {
        throw new Error(`File not found: ${song.filePath}`);
      }
    }

    // 设置播放源和配置
    await this.setupPlayerForSong(song);
    
    // 准备播放器
    const preparedPlayer = this.playerManager.getIjkPlayer();
    if (preparedPlayer) {
      preparedPlayer.prepareAsync();
      // 注意：实际播放和状态更新会在 onPrepared 回调中开始
    }
    // 重置重试计数
    this.currentRetryCount = 0;
  }

  async pause(): Promise<void> {
    try {
      // 检查服务是否已准备就绪
      if (!this.isAllServicesReady()) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: pause - 服务未就绪');
        // 对于暂停操作，如果服务未就绪，可以尝试简单的状态更新
        this.stateModel.updatePlayingState(false);
        return;
      }

      const ijkPlayer = this.playerManager.getIjkPlayer();
      
      // 保存当前播放位置
      this.savePlaybackPosition();
      
      // 暂停播放器 - 确保先暂停播放器
      this.playerManager.pausePlayback();
      
      // 立即更新状态模型为暂停状态，确保状态同步
      this.stateModel.updatePlayingState(false);
      
      // 停止进度定时器
      this.stopProgressTimer();
      
      // 等待一小段时间确保播放器状态稳定
      await new Promise<void>(resolve => setTimeout(resolve, 50));
      
      // 保存播放状态变化
      this.saveCurrentState();
      
      
      this.updateSessionPlayState();
      
      // 更新卡片显示暂停状态
      await this.updateWidgetsForPlayStateChange();

    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService pause error: ${error}`);
    }
  }

  async stop(): Promise<void> {
    try {
      this.savePlaybackPosition();
      this.playerManager.stopPlayback();
      this.stateModel.updatePlayingState(false);
      this.stateModel.updateProgress(0, 0);
      this.stopProgressTimer();
      
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService stop error: ${error}`);
      throw new Error;
    }
  } 

  /**
   * 静默停止播放，不触发状态变化通知（用于歌曲切换）
   */
  private async stopSilently(): Promise<void> {
    try {
      this.savePlaybackPosition();
      this.playerManager.stopPlayback();
      this.stopProgressTimer();
      // 不调用 updatePlayingState，避免触发状态变化通知
      
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService stopSilently error: ${error}`);
      throw new Error;
    }
  } 
 async seekTo(position: string): Promise<void> {
    try {
      const currentSong = this.playlistModel.getCurrentSong();
      if (!currentSong) {
        throw new Error('No song to seek');
      }

      // 检查是否支持拖动（wma格式不支持）
      if (StrUtil.isNotEmpty(currentSong.filePath) && 
          currentSong.filePath.toLowerCase().endsWith('.wma')) {
        throw new Error('WMA format does not support seeking');
      }

      await this.playerManager.seekToPosition(position);
    } catch (error) {
      throw new Error(`Failed to seek to position: ${error}`);
    }
  }

  // 播放列表控制方法
  async playNext(): Promise<void> {
    try {
      // 首先检查服务是否已准备就绪
      if (!this.isAllServicesReady()) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: playNext - 服务未就绪，等待服务初始化完成');
        const isReady = await this.waitForAllServicesReady(2000, false);
        if (!isReady) {
          const error = new Error('Services not ready for playNext');
          await this.handlePlaybackError(error, PlayerErrorType.INITIALIZATION_ERROR);
          return;
        }
      }
      
      const playMode = this.stateModel.getState().playMode;
      
      if (!this.playlistModel.hasNext(playMode)) {
        return;
      }
      const moved = this.playlistModel.moveToNext(playMode);
      if (!moved) {
        return;
      }

      // 更新状态模型的索引
      const newIndex = this.playlistModel.getCurrentIndex();
      const newSong = this.playlistModel.getCurrentSong();
      this.stateModel.updateCurrentIndex(newIndex);
      
      if (newSong) {
        this.stateModel.updateCurrentSong(newSong);
      }
      
      // 静默停止当前播放（不触发状态变化通知）
      await this.stopSilently();
      
      // 直接播放新歌曲，不调用通用的恢复逻辑
      await this.playNewSongDirectly(newSong);
      
      // 更新状态模型中的播放列表状态
      this.updatePlaylistStateInModel();
      
      // 强制更新卡片显示新歌曲（重要事件）
      if (newSong) {
        await this.updateWidgetsForSongChange(newSong, true);
      }
      
    } catch (error) {
      await this.handlePlaybackError(error as Error, PlayerErrorType.PLAYBACK_ERROR);
    }
  }

  async playPrevious(): Promise<void> {
    try {
      // 首先检查服务是否已准备就绪
      if (!this.isAllServicesReady()) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: playPrevious - 服务未就绪，等待服务初始化完成');
        const isReady = await this.waitForAllServicesReady(2000, false);
        if (!isReady) {
          const error = new Error('Services not ready for playPrevious');
          await this.handlePlaybackError(error, PlayerErrorType.INITIALIZATION_ERROR);
          return;
        }
      }
      
      const playMode = this.stateModel.getState().playMode;
      
      if (!this.playlistModel.hasPrevious(playMode)) {
        return;
      }

      // 先获取当前歌曲信息用于日志
      const currentSong = this.playlistModel.getCurrentSong();
      const currentIndex = this.playlistModel.getCurrentIndex();

      const moved = this.playlistModel.moveToPrevious(playMode);
      if (!moved) {
        return;
      }

      // 更新状态模型的索引
      const newIndex = this.playlistModel.getCurrentIndex();
      const newSong = this.playlistModel.getCurrentSong();
      this.stateModel.updateCurrentIndex(newIndex);
      
      if (newSong) {
        this.stateModel.updateCurrentSong(newSong);
      }
      
      // 静默停止当前播放（不触发状态变化通知）
      await this.stopSilently();
      
      // 直接播放新歌曲，不调用通用的恢复逻辑
      await this.playNewSongDirectly(newSong);
      
      // 更新状态模型中的播放列表状态
      this.updatePlaylistStateInModel();
      
      // 强制更新卡片显示新歌曲（重要事件）
      if (newSong) {
        await this.updateWidgetsForSongChange(newSong, true);
      }
      
    } catch (error) {
      await this.handlePlaybackError(error as Error, PlayerErrorType.PLAYBACK_ERROR);
    }
  }
  async playSongAtIndex(index: number): Promise<void> {
    try {
      const success = this.playlistModel.playSongAtIndex(index);
      if (!success) {
        throw new Error(`Invalid song index: ${index}`);
      }

      this.stateModel.updateCurrentIndex(index);
      
      // 静默停止当前播放并开始新歌曲（不触发状态变化通知）
      await this.stopSilently();
      await this.startPlayOrResumePlay();
      
      // 更新状态模型中的播放列表状态
      this.updatePlaylistStateInModel();
      
      // 通知歌曲变化
      const currentSong = this.playlistModel.getCurrentSong();
      if (currentSong) {
        this.stateModel.updateCurrentSong(currentSong);
      }
      
    } catch (error) {
      throw new Error;
    }
  }

  // 状态查询方法
  getCurrentState(): PlayerState {
    return this.stateModel.getState();
  }

  /**
   * 获取播放器实际播放状态（最准确）
   * 直接从ijkPlayer获取，不依赖状态模型
   */
  getActualPlayingState(): boolean {
    try {
      const ijkPlayer = this.playerManager?.getIjkPlayer();
      if (ijkPlayer) {
        return ijkPlayer.isPlaying();
      }
      return false;
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to get actual playing state: ${error}`);
      return false;
    }
  }

  getCurrentSong(): VideoItem | null {
    return this.playlistModel.getCurrentSong();
  }

  getPlaylist(): VideoItem[] {
    return this.playlistModel.getSongs();
  }

  getCurrentIndex(): number {
    return this.playlistModel.getCurrentIndex();
  }

  /**
   * 检查数据是否已从持久化存储恢复
   */
  isDataRestorationCompleted(): boolean {
    return this.isDataRestored;
  }

  /**
   * 等待数据恢复完成
   */
  async waitForDataRestoration(maxWaitMs: number = 3000): Promise<boolean> {
    const startTime = Date.now();
    while (!this.isDataRestored && (Date.now() - startTime) < maxWaitMs) {
      await new Promise<void>(resolve => setTimeout(resolve, 100));
    }
    return this.isDataRestored;
  }

  /**
   * 强制触发数据恢复（用于桌面卡片冷启动场景）
   */
  async forceDataRestoration(): Promise<boolean> {
    try {
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Force data restoration started');
      
      // 如果数据已经恢复，直接返回
      if (this.isDataRestored) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Data already restored');
        return true;
      }
      
      // 强制执行数据恢复
      await this.restorePersistedState();
      
      // 如果播放列表仍为空，尝试从内存快速恢复
      if (this.playlistModel.getTotalCount() === 0) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Playlist empty, trying memory restore');
        await this.fastRestoreFromMemory();
      }
      
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Force restoration completed, playlist size: ${this.playlistModel.getTotalCount()}`);
      return this.isDataRestored;
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Force data restoration failed: ${error}`);
      return false;
    }
  }

  /**
   * 检查所有相关服务是否已准备就绪
   * 用于桌面卡片控制等场景，确保在执行播放控制前服务状态正常
   */
  isAllServicesReady(): boolean {
    try {
      // 检查基本初始化状态
      if (!this.isInitialized) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Service not initialized');
        return false;
      }

      // 检查核心组件是否就绪
      if (!this.playerManager || !this.stateModel || !this.playlistModel) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Core components not ready');
        return false;
      }

      // 检查 PlayerManager 是否已经初始化
      const playerInstance = this.playerManager.getIjkPlayer();
      if (!playerInstance) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Player instance not ready');
        return false;
      }

      // 检查上下文是否可用
      if (!this.context) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Context not available');
        return false;
      }

      LogUtils.getInstance().LOGI('UnifiedPlayerService: All services ready');
      return true;
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Service readiness check failed: ${error}`);
      return false;
    }
  }

  /**
   * 验证初始化完整性
   * 在应用启动后调用，确保所有关键组件都已正确初始化
   */
  validateInitialization(): InitializationValidation {
    const errors: string[] = [];
    const warnings: string[] = [];

    try {
      // 检查基础初始化
      if (!this.isInitialized) {
        errors.push('Service not initialized');
      }

      // 检查核心组件
      if (!this.playerManager) {
        errors.push('PlayerManager not available');
      } else {
        const playerInstance = this.playerManager.getIjkPlayer();
        if (!playerInstance) {
          warnings.push('Player instance not ready (may initialize later)');
        }
      }

      if (!this.stateModel) {
        errors.push('StateModel not available');
      }

      if (!this.playlistModel) {
        errors.push('PlaylistModel not available');
      }

      if (!this.context) {
        warnings.push('Context not set (may be set later)');
      }

      // 检查数据持久化服务
      if (!this.dataPersistence) {
        errors.push('DataPersistence service not available');
      }

      // 检查同步服务
      if (!this.stateSync) {
        errors.push('StateSync service not available');
      }

      if (!this.playlistSync) {
        errors.push('PlaylistSync service not available');
      }

      // 检查卡片更新服务
      if (!this.widgetUpdateService) {
        warnings.push('WidgetUpdate service not available');
      }

      // 检查错误恢复策略
      if (!this.errorRecovery) {
        warnings.push('ErrorRecovery strategy not available');
      }

      const isValid = errors.length === 0;
      
      LogUtils.getInstance().LOGI(`UnifiedPlayerService validation: ${isValid ? 'VALID' : 'INVALID'}, errors: ${errors.length}, warnings: ${warnings.length}`);
      
      const result: InitializationValidation = {
        isValid,
        errors,
        warnings
      };

      return result;

    } catch (error) {
      errors.push(`Validation failed with exception: ${error}`);
      const result: InitializationValidation = {
        isValid: false,
        errors,
        warnings
      };
      return result;
    }
  }

  /**
   * 获取服务就绪状态的详细信息
   * 用于调试和用户反馈
   */
  getServiceReadinessInfo(): ServiceReadinessInfo {
    const playerInstance = this.playerManager?.getIjkPlayer();
    const playlistSize = this.playlistModel?.getTotalCount() || 0;
    const currentIndex = this.playlistModel?.getCurrentIndex() || -1;

    const details: ServiceReadinessDetails = {
      initialized: this.isInitialized,
      hasPlayerInstance: !!playerInstance,
      hasContext: !!this.context,
      dataRestored: this.isDataRestored,
      playlistSize: playlistSize,
      currentIndex: currentIndex
    };

    const isReady = this.isAllServicesReady();

    LogUtils.getInstance().LOGI(`UnifiedPlayerService readiness: ${JSON.stringify(details)}`);
    
    const result: ServiceReadinessInfo = { isReady, details };
    return result;
  }

  /**
   * 等待所有服务准备就绪
   * @param maxWaitMs 最大等待时间（毫秒）
   * @param checkDataRestore 是否同时等待数据恢复完成
   */
  async waitForAllServicesReady(maxWaitMs: number = 5000, checkDataRestore: boolean = true): Promise<boolean> {
    const startTime = Date.now();
    const checkInterval = 100; // 每100ms检查一次

    LogUtils.getInstance().LOGI(`UnifiedPlayerService: Waiting for services ready (maxWait: ${maxWaitMs}ms, checkDataRestore: ${checkDataRestore})`);

    while ((Date.now() - startTime) < maxWaitMs) {
      // 检查基础服务就绪状态
      if (this.isAllServicesReady()) {
        // 如果不需要检查数据恢复，直接返回成功
        if (!checkDataRestore) {
          LogUtils.getInstance().LOGI('UnifiedPlayerService: All services ready (data restore check skipped)');
          return true;
        }

        // 检查数据恢复状态
        if (this.isDataRestored) {
          LogUtils.getInstance().LOGI('UnifiedPlayerService: All services ready and data restored');
          return true;
        }

        // 检查播放列表是否有数据（即使数据恢复标识未设置）
        const playlistSize = this.playlistModel.getTotalCount();
        if (playlistSize > 0) {
          LogUtils.getInstance().LOGI(`UnifiedPlayerService: Services ready with playlist data (${playlistSize} songs)`);
          return true;
        }
      }

      // 短暂等待后继续检查
      await new Promise<void>(resolve => setTimeout(resolve, checkInterval));
    }

    // 超时检查最终状态
    const finalCheck = this.isAllServicesReady();
    const playlistSize = this.playlistModel?.getTotalCount() || 0;
    LogUtils.getInstance().LOGI(`UnifiedPlayerService: Service readiness timeout - finalCheck: ${finalCheck}, playlistSize: ${playlistSize}, dataRestored: ${this.isDataRestored}`);
    
    return finalCheck;
  }

  // 播放模式控制
  setPlayMode(mode: number): void {
    const playMode = mode as PlayMode;
    this.stateModel.updatePlayMode(playMode);
    LogUtils.getInstance().LOGI(`UnifiedPlayerService: Play mode set to ${mode}`);
  }

  getPlayMode(): number {
    return this.stateModel.getState().playMode;
  }

  // 音量和速度控制
  setVolume(volume: number): void {
    const volumeStr = volume.toString();
    this.playerManager.setVolume(volumeStr, volumeStr);
    this.stateModel.updateVolume(volume);
    LogUtils.getInstance().LOGI(`UnifiedPlayerService: Volume set to ${volume}`);
  }

  setPlaybackSpeed(speed: number): void {
    const speedStr = speed.toString() + 'f';
    this.playerManager.setPlaybackSpeed(speedStr);
    this.stateModel.updateSpeed(speed);
    LogUtils.getInstance().LOGI(`UnifiedPlayerService: Speed set to ${speed}`);
  }  
  // 播放列表管理
  setPlaylist(songs: VideoItem[], currentIndex: number = 0): void {
    // 记录调用栈信息以便调试
    const stack = new Error().stack || 'No stack available';
    const caller = stack.split('\n')[2] || 'Unknown caller';
    
    this.playlistModel.replaceSongs(songs, currentIndex);
    this.stateModel.updateCurrentIndex(currentIndex);
    
    // 更新状态模型中的播放列表状态
    this.updatePlaylistStateInModel();
    
    // 更新当前歌曲
    const currentSong = this.playlistModel.getCurrentSong();
    this.stateModel.updateCurrentSong(currentSong);
    
    // 同步到持久化存储
    this.syncPlaylistToStorage();
    
    // 更新卡片显示播放列表变化
    this.updateWidgetsForPlaylistChange();
    
    LogUtils.getInstance().LOGI(`UnifiedPlayerService: Playlist set with ${songs.length} songs, caller: ${caller.trim()}`);
    
    // 如果设置的是小播放列表，记录更多信息
    if (songs.length <= 20) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Small playlist detected, caller stack: ${stack.substring(0, 500)}`);
    }
  }

  addToPlaylist(song: VideoItem, index?: number): void {
    this.playlistModel.addSong(song, index);
    
    // 更新状态模型中的播放列表状态
    this.updatePlaylistStateInModel();
    
    // 同步到持久化存储
    this.syncPlaylistToStorage();
    
    // 更新卡片显示播放列表变化
    this.updateWidgetsForPlaylistChange();
    
    LogUtils.getInstance().LOGI(`UnifiedPlayerService: Song added to playlist`);
  }

  removeFromPlaylist(index: number): VideoItem | null {
    const removedSong = this.playlistModel.removeSong(index);
    if (removedSong) {
      this.stateModel.updateCurrentIndex(this.playlistModel.getCurrentIndex());
      
      // 更新状态模型中的播放列表状态
      this.updatePlaylistStateInModel();
      
      // 更新当前歌曲
      const currentSong = this.playlistModel.getCurrentSong();
      this.stateModel.updateCurrentSong(currentSong);
      
      // 同步到持久化存储
      this.syncPlaylistToStorage();
      
      // 更新卡片显示播放列表变化
      this.updateWidgetsForPlaylistChange();
      
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Song removed from playlist at index ${index}`);
    }
    return removedSong;
  }

  // 事件监听
  addStateListener(listener: PlayerStateListener): void {
    this.stateModel.addStateListener(listener);
  }

  removeStateListener(listener: PlayerStateListener): void {
    this.stateModel.removeStateListener(listener);
  }

  // 清理资源
  release(): void {
    try {
      this.stopProgressTimer();
      
      // 清理防抖定时器
      if (this.avSessionUpdateTimer !== -1) {
        clearTimeout(this.avSessionUpdateTimer);
        this.avSessionUpdateTimer = -1;
      }
      if (this.avMetadataUpdateTimer !== -1) {
        clearTimeout(this.avMetadataUpdateTimer);
        this.avMetadataUpdateTimer = -1;
      }
      
      // 保存当前状态
      this.saveCurrentState();
      
      
      if (this.avSessionController) {
        this.avSessionController.unregisterSessionListener();
        this.avSessionController = null;
      }
      
      // 清理同步监听器
      this.playlistSync.removeSyncListener(this);
      this.playlistSync.release();
      this.stateSync.unsubscribeFromStateChanges(this);
      this.stateSync.unsubscribeFromWidgetControl(this);
      this.stateSync.release();
      
      this.playerManager.release();
      this.playlistModel.clear();
      this.isInitialized = false;
      
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Resources released');
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService release error: ${error}`);
    }
  }

  
  
  /**
   * 初始化AVSession
   * 按照官方文档的要求：创建 -> 注册控制命令 -> 设置元数据 -> 激活
   */
  private initializeAvSession(): void {
    try {
      
      this.avSessionController = AvSessionController.getInstance(false);
      LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession controller created');
      
      
      setTimeout(() => {
        this.setAvSessionListener();
        LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession listeners configured');
      }, 500);
      
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to initialize AVSession: ${error}`);
    }
  }
  

  
  /**
   * 设置AVSession监听器
   * 注意：控制命令已在AvSessionController中注册，这里设置实际的处理逻辑
   */
  private setAvSessionListener(): void {
    if (!this.avSessionController) {
      return;
    }
    
    const avSession = this.avSessionController.getAvSession();
    if (!avSession) {
      LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession not available for listener setup');
      return;
    }
    
    try {
      
      // 播放事件监听
      avSession.on('play', () => {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession play command received');
        this.startPlayOrResumePlay().catch((error: Error) => {
          LogUtils.getInstance().LOGI(`AVSession play command failed: ${error}`);
        });
      });
      
      // 暂停事件监听
      avSession.on('pause', () => {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession pause command received');
        this.pause().catch((error: Error) => {
          LogUtils.getInstance().LOGI(`AVSession pause command failed: ${error}`);
        });
      });
      
      // 停止事件监听
      avSession.on('stop', () => {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession stop command received');
        this.stop().catch((error: Error) => {
          LogUtils.getInstance().LOGI(`AVSession stop command failed: ${error}`);
        });
      });
      
      // 下一首事件监听
      avSession.on('playNext', () => {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession playNext command received');
        this.playNext().catch((error: Error) => {
          LogUtils.getInstance().LOGI(`AVSession playNext command failed: ${error}`);
        });
      });
      
      // 上一首事件监听
      avSession.on('playPrevious', () => {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession playPrevious command received');
        this.playPrevious().catch((error: Error) => {
          LogUtils.getInstance().LOGI(`AVSession playPrevious command failed: ${error}`);
        });
      });
      
      // 拖拽进度事件监听
      avSession.on('seek', (time: number) => {
        LogUtils.getInstance().LOGI(`UnifiedPlayerService: AVSession seek command received: ${time}ms`);
        this.seekTo(time.toString()).catch((error: Error) => {
          LogUtils.getInstance().LOGI(`AVSession seek command failed: ${error}`);
        });
      });
      
      // 循环模式设置监听
      avSession.on('setLoopMode', (mode: avSession.LoopMode) => {
        LogUtils.getInstance().LOGI(`UnifiedPlayerService: AVSession setLoopMode command received: ${mode}`);
        
        const playMode = this.convertLoopModeToPlayMode(mode);
        this.setPlayMode(playMode);
      });
      
      LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession listeners set up successfully');
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to set AVSession listeners: ${error}`);
    }
  }
  

  
  /**
   * 转换AVSession循环模式为播放模式
   */
  private convertLoopModeToPlayMode(loopMode: avSession.LoopMode): number {
    switch (loopMode) {
      case avSession.LoopMode.LOOP_MODE_SINGLE:
        return PlayMode.SINGLE_REPEAT;
      case avSession.LoopMode.LOOP_MODE_LIST:
        return PlayMode.NORMAL;
      case avSession.LoopMode.LOOP_MODE_SHUFFLE:
        return PlayMode.RANDOM;
      case avSession.LoopMode.LOOP_MODE_SEQUENCE:
      default:
        return PlayMode.SEQUENCE;
    }
  }

  
  // ==================== 错误处理和恢复方法 ====================
  
  /**
   * 处理播放错误
   */
  private async handlePlaybackError(error: Error, errorType: PlayerErrorType = PlayerErrorType.PLAYBACK_ERROR): Promise<void> {
    try {
      // 创建播放器错误对象
      const playerError = new PlayerError(errorType, error.message);
      playerError.retryCount = this.currentRetryCount;
      
      // 创建错误上下文
      const context: ErrorContext = {
        currentSong: this.playlistModel.getCurrentSong(),
        playlist: this.playlistModel.getSongs(),
        currentIndex: this.playlistModel.getCurrentIndex(),
        retryCount: this.currentRetryCount,
        isNetworkAvailable: true // 这里可以实际检查网络状态
      };
      
      // 获取恢复策略
      const recoveryAction = await this.errorRecovery.handleError(playerError, context);
      
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Error recovery action: ${recoveryAction}`);
      
      // 执行恢复动作
      await this.executeRecoveryAction(recoveryAction, playerError, context);
      
    } catch (recoveryError) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Error recovery failed: ${recoveryError}`);
      this.stateModel.notifyError(new PlayerError(PlayerErrorType.PLAYBACK_ERROR, `Recovery failed: ${recoveryError.message}`));
    }
  }
  
  /**
   * 执行错误恢复动作
   */
  private async executeRecoveryAction(action: ErrorRecoveryAction, error: PlayerError, context: ErrorContext): Promise<void> {
    switch (action) {
      case ErrorRecoveryAction.RETRY:
        await this.retryCurrentOperation(error);
        break;
        
      case ErrorRecoveryAction.SKIP_TO_NEXT:
        await this.skipToNextSong();
        break;
        
      case ErrorRecoveryAction.STOP_PLAYBACK:
        await this.stop();
        this.stateModel.notifyError(error);
        break;
        
      case ErrorRecoveryAction.WAIT_AND_RETRY:
        await this.waitAndRetry(error);
        break;
        
      case ErrorRecoveryAction.SHOW_ERROR:
        this.stateModel.notifyError(error);
        break;
        
      default:
        LogUtils.getInstance().LOGI(`UnifiedPlayerService: Unknown recovery action: ${action}`);
        this.stateModel.notifyError(error);
    }
  }
  
  /**
   * 重试当前操作
   */
  private async retryCurrentOperation(error: PlayerError): Promise<void> {
    try {
      this.currentRetryCount++;
      const delay = this.errorRecovery.getRetryDelay(this.currentRetryCount);
      
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Retrying operation in ${delay}ms (attempt ${this.currentRetryCount})`);
      
      // 等待指定时间后重试
      setTimeout(async () => {
        try {
          await this.startPlayOrResumePlay();
          this.currentRetryCount = 0; // 重试成功，重置计数
        } catch (retryError) {
          LogUtils.getInstance().LOGI(`UnifiedPlayerService: Retry failed: ${retryError}`);
          await this.handlePlaybackError(retryError as Error, error.type);
        }
      }, delay);
      
    } catch (retryError) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Retry setup failed: ${retryError}`);
      await this.skipToNextSong();
    }
  }
  
  /**
   * 跳到下一首歌曲
   */
  private async skipToNextSong(): Promise<void> {
    try {
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Skipping to next song due to error');
      
      // 重置重试计数
      this.currentRetryCount = 0;
      
      // 检查是否有下一首
      const playMode = this.stateModel.getState().playMode;
      if (this.playlistModel.hasNext(playMode)) {
        await this.playNext();
      } else {
        // 没有下一首，停止播放
        await this.stop();
        LogUtils.getInstance().LOGI('UnifiedPlayerService: No next song available, stopping playback');
      }
      
    } catch (skipError) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to skip to next song: ${skipError}`);
      await this.stop();
    }
  }
  
  /**
   * 等待后重试
   */
  private async waitAndRetry(error: PlayerError): Promise<void> {
    try {
      this.currentRetryCount++;
      const delay = this.errorRecovery.getRetryDelay(this.currentRetryCount);
      
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Waiting ${delay}ms before retry (network error)`);
      
      // 更新状态为加载中
      this.stateModel.updateLoadingState(true);
      
      setTimeout(async () => {
        try {
          await this.startPlayOrResumePlay();
          this.currentRetryCount = 0; // 重试成功，重置计数
        } catch (retryError) {
          LogUtils.getInstance().LOGI(`UnifiedPlayerService: Network retry failed: ${retryError}`);
          await this.handlePlaybackError(retryError as Error, PlayerErrorType.NETWORK_ERROR);
        }
      }, delay);
      
    } catch (waitError) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Wait and retry setup failed: ${waitError}`);
      await this.skipToNextSong();
    }
  }
  
  /**
   * 检查文件是否存在
   */
  private async checkFileExists(filePath: string): Promise<boolean> {
    try {
      // 这里可以添加文件存在性检查逻辑
      // 暂时返回true，实际实现需要使用文件系统API
      return true;
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: File check failed: ${error}`);
      return false;
    }
  }
  
  /**
   * 检查网络连接
   */
  private async checkNetworkConnection(): Promise<boolean> {
    try {
      // 这里可以添加网络连接检查逻辑
      // 暂时返回true，实际实现需要使用网络API
      return true;
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Network check failed: ${error}`);
      return false;
    }
  }

  // 私有辅助方法
  /**
   * 检查播放器是否需要重新设置
   */
  private async needsPlayerSetup(song: VideoItem): Promise<boolean> {
    try {
      const ijkPlayer = this.playerManager.getIjkPlayer();
      if (!ijkPlayer) {
        console.log("Heanup2 UnifiedPlayerService: 播放器不存在，需要设置");
        return true;
      }
      
      // 检查播放器是否有数据源
      const duration = ijkPlayer.getDuration();
      if (duration <= 0) {
        console.log("Heanup2 UnifiedPlayerService: 播放器无数据源或时长无效，需要设置");
        return true;
      }
      
      // 检查当前数据源是否匹配（这里我们通过检查当前歌曲信息来判断）
      const currentSong = this.playlistModel.getCurrentSong();
      if (!currentSong || currentSong.filePath !== song.filePath) {
        console.log(`Heanup2 UnifiedPlayerService: 歌曲文件路径不匹配，需要重新设置 (当前: ${currentSong?.filePath}, 目标: ${song.filePath})`);
        return true;
      }
      
      console.log(`Heanup2 UnifiedPlayerService: 播放器已设置正确的数据源，无需重新设置 (时长: ${duration}ms)`);
      return false;
    } catch (error) {
      console.log(`Heanup2 UnifiedPlayerService: 检查播放器设置状态时出错: ${error}，默认需要设置`);
      return true;
    }
  }

  private async setupPlayerForSong(song: VideoItem): Promise<void> {
    const ijkPlayer = this.playerManager.getIjkPlayer();
    if (!ijkPlayer) {
      throw new Error('Player not initialized');
    }

    console.log("Heanup2 UnifiedPlayerService: 开始重新设置播放器，这会重置所有状态");

    // 标记播放器未准备（因为要重新设置）
    this.isPlayerPreparedForCurrentSong = false;

    // 重置播放器 - 这会清除所有状态包括播放位置
    ijkPlayer.reset();
    
    // 重新设置音频模式 - 重置后需要重新设置
    ijkPlayer.setAudioId('unifiedPlayer');
    LogUtils.getInstance().LOGI(`UnifiedPlayerService: Reset audio mode for ${song.name}`);
    
    // 重新设置配置
    this.playerManager.setupIjkPlayerOptions();
    
    // 设置音量（针对dsf格式特殊处理）
    const volume = this.stateModel.getState().volume;
    if (song.filePath.toLowerCase().endsWith('.dsf')) {
      this.playerManager.setVolume('1', '1');
    } else {
      this.playerManager.setVolume(volume.toString(), volume.toString());
    }
    
    // 设置数据源
    ijkPlayer.setDataSource(song.filePath);
    LogUtils.getInstance().LOGI(`UnifiedPlayerService: Set data source to ${song.filePath}`);
    
    // 设置HTTP请求头
    const headers = new Map([
      ["user_agent", "Mozilla/5.0 BiliDroid/7.30.0 (bbcallen@gmail.com)"],
      ["referer", "https://www.bilibili.com"]
    ]);
    ijkPlayer.setDataSourceHeader(headers);
    
    // 设置播放速度
    const speed = this.stateModel.getState().speed;
    this.playerManager.setPlaybackSpeed(speed.toString() + 'f');
    
    // 设置消息监听器（重要：用于处理播放器内部事件）
    ijkPlayer.setMessageListener();
    
    LogUtils.getInstance().LOGI(`UnifiedPlayerService: Player setup for song ${song.name}`);
    console.log("Heanup2 UnifiedPlayerService: 播放器重新设置完成，准备开始新的播放");
  }  
  private setupProgressTimer(): void {
    this.progressTimer = setInterval(() => {
      this.updateProgress();
    }, 1000); // 每秒更新一次进度
  }

  private startProgressTimer(): void {
    // 先停止现有的定时器，避免重复启动
    this.stopProgressTimer();
    
    // 启动新的定时器
    this.setupProgressTimer();
    LogUtils.getInstance().LOGI('UnifiedPlayerService: Progress timer started');
  }

  private stopProgressTimer(): void {
    if (this.progressTimer !== -1) {
      clearInterval(this.progressTimer);
      this.progressTimer = -1;
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Progress timer stopped');
    }
  }

  private updateProgress(): void {
    try {
      const ijkPlayer = this.playerManager.getIjkPlayer();
      const currentState = this.stateModel.getState();
      
      // 只有在播放器存在且正在播放时才更新进度
      if (!ijkPlayer || !currentState.isPlaying) {
        return;
      }

      const currentPosition = ijkPlayer.getCurrentPosition();
      const duration = ijkPlayer.getDuration();
      
      // 确保获取到有效的位置信息
      if (currentPosition >= 0 && duration > 0) {
        this.stateModel.updateProgress(currentPosition, duration);
        this.updateSessionPlayState();
      }
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService updateProgress error: ${error}`);
    }
  }
  getCurrentPosition(): number {
    try {
      const ijkPlayer = this.playerManager.getIjkPlayer();
      if (!ijkPlayer) {
        return 0;
      }
      return ijkPlayer.getCurrentPosition();
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService getCurrentPosition error: ${error}`);
      return 0;
    }
  }

  private savePlaybackPosition(): void {
    const ijkPlayer = this.playerManager.getIjkPlayer();
    if (ijkPlayer!= null){
      const position = ijkPlayer.getCurrentPosition();
      // ToastUtil.showToast('保存记忆播放 = ' + position)
      const duration = ijkPlayer.getDuration();
      const threshold = 5000; // 阈值，单位为毫秒（这里设为5秒）

      // 如果播放位置接近视频末尾，则保存 position 为 0
      const playbackPosition = (duration - position < threshold) ? 0 : position;
      const  currentSong = this.playlistModel.getCurrentSong();
      if (currentSong!=null) {
        PreferencesUtil.putSync(currentSong.filePath, playbackPosition);
      }

    }
  }

  private async restorePlaybackPosition(song: VideoItem): Promise<void> {
    // const position: number = PreferencesUtil.getNumberSync(this.videoUrl, 0);
    // // ToastUtil.showToast('position = ' + position)
    // if (this.mIjkMediaPlayer != null && position > 0) {
    //   // ToastUtil.showToast('seekTo = ' + position)
    //   this.seekTo(position + "");
    //
    // }
    if (song!= null){
      const position = PreferencesUtil.getNumberSync(song.filePath, 0);
      if (position > 0) {
        await this.playerManager.seekToPosition(position.toString());
      }
    }
    // try {
    //   // 使用DataPersistenceService恢复播放进度
    //   const progressData = await this.dataPersistence.loadPlaybackProgress(song.filePath);
    //   if (progressData && progressData.position > 0 && !progressData.completed) {
    //     await this.playerManager.seekToPosition(progressData.position.toString());
    //     LogUtils.getInstance().LOGI(`UnifiedPlayerService: Restored playback position ${progressData.position}ms for ${song.name}`);
    //   }
    // } catch (error) {
    //   LogUtils.getInstance().LOGI(`UnifiedPlayerService restorePlaybackPosition error: ${error}`);
    // }
  }
 // ==================== 数据持久化和同步方法 ====================
  
  /**
   * 恢复持久化的状态
   */
  /**
   * 快速从内存中恢复关键数据（AppStorage）
   */
  private async fastRestoreFromMemory(): Promise<void> {
    try {
      console.log("Heanup2 UnifiedPlayerService: 开始从内存快速恢复关键数据");
      
      // 从AppStorage快速获取播放列表数据
      const playlistData = AppStorage.get<PlaylistData>('player_playlist');
      if (playlistData && playlistData.songs.length > 0) {
        console.log(`Heanup2 UnifiedPlayerService: 从内存快速恢复播放列表，歌曲数量=${playlistData.songs.length}`);
        this.playlistModel.replaceSongs(playlistData.songs, playlistData.currentIndex);
        this.stateModel.updateCurrentIndex(playlistData.currentIndex);
        this.stateModel.updatePlayMode(playlistData.playMode);
        
        // 恢复当前歌曲
        const currentSong = this.playlistModel.getCurrentSong();
        if (currentSong) {
          this.stateModel.updateCurrentSong(currentSong);
          console.log(`Heanup2 UnifiedPlayerService: 快速恢复当前歌曲: ${currentSong.name}`);
        }
      }
      
      // 从AppStorage快速获取播放状态数据
      const stateData = AppStorage.get<PlayerStateData>('player_state') as PlayerStateData;
      if (stateData) {
        console.log(`Heanup2 UnifiedPlayerService: 从内存快速恢复播放状态 - playing: ${stateData.isPlaying}, index: ${stateData.currentIndex}`);
        this.stateModel.updateVolume(stateData.volume);
        this.stateModel.updateSpeed(stateData.speed);
        this.stateModel.updatePlayMode(stateData.playMode);
        this.stateModel.updatePlayingState(stateData.isPlaying || false);
        
        if (stateData.currentIndex >= 0) {
          this.stateModel.updateCurrentIndex(stateData.currentIndex);
        }
      }
      
      console.log("Heanup2 UnifiedPlayerService: 内存数据快速恢复完成");
      
      // 设置一个临时的数据恢复完成标识，允许快速响应
      this.isDataRestored = true;
    } catch (error) {
      console.log(`Heanup2 UnifiedPlayerService: 快速恢复内存数据失败: ${error}`);
    }
  }

  private async restorePersistedState(): Promise<void> {
    try {
      console.log("Heanup2 UnifiedPlayerService: 开始快速恢复持久化状态");
      
      // 并行加载播放列表和播放状态，提高效率
      const loadResults = await Promise.all([
        this.dataPersistence.loadPlaylist().catch(() => null),
        this.dataPersistence.loadPlayerState().catch(() => null)
      ]);
      const playlistData = loadResults[0];
      const stateData = loadResults[1];
      
      // 恢复播放列表
      if (playlistData && playlistData.songs.length > 0) {
        console.log(`Heanup2 UnifiedPlayerService: 恢复播放列表，歌曲数量=${playlistData.songs.length}, 当前索引=${playlistData.currentIndex}`);
        this.playlistModel.replaceSongs(playlistData.songs, playlistData.currentIndex);
        this.stateModel.updateCurrentIndex(playlistData.currentIndex);
        this.stateModel.updatePlayMode(playlistData.playMode);
        
        // 恢复当前歌曲到状态模型
        const currentSong = this.playlistModel.getCurrentSong();
        if (currentSong) {
          this.stateModel.updateCurrentSong(currentSong);
          console.log(`Heanup2 UnifiedPlayerService: 恢复当前歌曲: ${currentSong.name}`);
        }
        
        LogUtils.getInstance().LOGI(`UnifiedPlayerService: Restored playlist with ${playlistData.songs.length} songs`);
      } else {
        console.log("Heanup2 UnifiedPlayerService: 没有找到保存的播放列表或播放列表为空");
      }
      
      // 恢复播放状态
      if (stateData) {
        console.log(`Heanup2 UnifiedPlayerService: 加载到的播放状态 - playing: ${stateData.isPlaying}, paused: ${stateData.isPaused}, index: ${stateData.currentIndex}`);
        
        // 批量更新状态，减少回调次数
        this.stateModel.updateVolume(stateData.volume);
        this.stateModel.updateSpeed(stateData.speed);
        this.stateModel.updatePlayMode(stateData.playMode);
        
        // 恢复播放状态（UI会使用实际播放器状态，所以这里可以恢复逻辑状态）
        this.stateModel.updatePlayingState(stateData.isPlaying || false);
        
        // 恢复当前播放索引
        if (stateData.currentIndex >= 0) {
          this.stateModel.updateCurrentIndex(stateData.currentIndex);
        }
        
        console.log("Heanup2 UnifiedPlayerService: 播放状态恢复完成");
        LogUtils.getInstance().LOGI(`UnifiedPlayerService: Restored player state - playing: ${stateData.isPlaying}, paused: ${stateData.isPaused}, index: ${stateData.currentIndex}`);
      } else {
        console.log("Heanup2 UnifiedPlayerService: 没有找到保存的播放状态");
      }
      
      console.log("Heanup2 UnifiedPlayerService: 持久化状态快速恢复完成");
      
      // 设置数据恢复完成标识
      this.isDataRestored = true;
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Data restoration completed');
    } catch (error) {
      console.log(`Heanup2 UnifiedPlayerService: 恢复持久化状态时出错: ${error}`);
      LogUtils.getInstance().LOGI(`UnifiedPlayerService restorePersistedState error: ${error}`);
      // 即使出错也设置为已恢复，避免无限等待
      this.isDataRestored = true;
    }
  }
  
  /**
   * 保存当前状态
   */
  private saveCurrentState(): void {
    try {
      // 保存播放状态
      const currentState = this.stateModel.getState();
      this.dataPersistence.savePlayerState(currentState)
      
      // 保存播放进度
      this.savePlaybackPosition();
      
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Current state saved');
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService saveCurrentState error: ${error}`);
    }
  }
  
  /**
   * 同步播放列表到存储
   */
  private syncPlaylistToStorage(): void {
    try {
      const playlist = this.playlistModel.getSongs();
      const currentIndex = this.playlistModel.getCurrentIndex();
      const playMode = this.stateModel.getState().playMode;
      
      this.playlistSync.syncPlaylistToStorage(playlist, currentIndex, playMode);
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService syncPlaylistToStorage error: ${error}`);
    }
  }
  
  // ==================== PlaylistSyncListener 接口实现 ====================
  
  /**
   * 播放列表同步完成回调
   */
  onPlaylistSynced(playlist: VideoItem[], currentIndex: number, playMode: PlayMode): void {
    try {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Playlist synced - ${playlist.length} songs, index ${currentIndex}`);
      
      // 播放列表同步完成，无需额外通知
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService onPlaylistSynced error: ${error}`);
    }
  }
  
  /**
   * 播放列表加载完成回调
   */
  onPlaylistLoaded(playlistData: PlaylistData): void {
    try {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Playlist loaded from storage - ${playlistData.songs.length} songs`);
      
      // 检查是否需要更新本地播放列表
      const currentPlaylist = this.playlistModel.getSongs();
      const currentIndex = this.playlistModel.getCurrentIndex();
      
      // 如果存储的数据更新，更新本地播放列表
      if (playlistData.songs.length !== currentPlaylist.length || 
          playlistData.currentIndex !== currentIndex) {
        
        this.playlistModel.replaceSongs(playlistData.songs, playlistData.currentIndex);
        this.stateModel.updateCurrentIndex(playlistData.currentIndex);
        this.stateModel.updatePlayMode(playlistData.playMode);
        
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Local playlist updated from storage');
      }
      
      // 更新数据恢复状态（如果还没有恢复的话）
      if (!this.isDataRestored) {
        this.isDataRestored = true;
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Data restoration completed via onPlaylistLoaded');
      }
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService onPlaylistLoaded error: ${error}`);
    }
  }
  
  /**
   * 自动同步执行回调
   */
  onAutoSyncPerformed(): void {
    try {
      // 定期保存当前状态
      this.saveCurrentState();
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService onAutoSyncPerformed error: ${error}`);
    }
  }
  
  /**
   * 同步错误回调
   */
  onSyncError(error: Error): void {
    LogUtils.getInstance().LOGI(`UnifiedPlayerService sync error: ${error.message}`);
  }
  
  // ==================== 公共数据访问方法 ====================
  
  /**
   * 获取数据持久化服务实例
   */
  getDataPersistenceService(): IDataPersistenceService {
    return this.dataPersistence;
  }
  
  /**
   * 获取播放列表同步服务实例
   */
  getPlaylistSyncService(): PlaylistSyncService {
    return this.playlistSync;
  }

  // ==================== StateChangeCallback 接口实现 ====================
  
  /**
   * 状态变化回调（来自StateSyncService的本地通知）
   */
  onStateChanged?(state: PlayerState): void {
    try {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Received state change notification - isPlaying=${state.isPlaying}`);
      // 这里可以处理来自其他组件的状态变化通知
      // 通常情况下，状态变化是由本服务发起的，所以这里主要用于调试和监控
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService onStateChanged error: ${error}`);
    }
  }
  
  /**
   * 歌曲变化回调（来自StateSyncService的本地通知）
   */
  onSongChanged?(song: VideoItem): void {
    try {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Received song change notification - ${song.name}`);
      // 这里可以处理来自其他组件的歌曲变化通知
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService onSongChanged error: ${error}`);
    }
  }
  
  /**
   * 进度变化回调（来自StateSyncService的本地通知）
   */
  onProgressChanged?(progress: PlayProgress): void {
    try {
      // LogUtils.getInstance().LOGI(`UnifiedPlayerService: Received progress change notification - ${progress.percentage.toFixed(1)}%`);
      // 这里可以处理来自其他组件的进度变化通知
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService onProgressChanged error: ${error}`);
    }
  }

  // ==================== WidgetControlCallback 接口实现 ====================
  
  /**
   * 处理来自卡片的播放/暂停命令
   */
  async onPlayPause?(): Promise<void> {
    try {
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Received play/pause command from widget');
      
      // 优先检查播放器的实际状态，而不是状态模型
      const ijkPlayer = this.playerManager.getIjkPlayer();
      const isActuallyPlaying = ijkPlayer ? ijkPlayer.isPlaying() : false;
      const stateModelPlaying = this.getCurrentState().isPlaying;
      
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Widget playPause - StateModel: ${stateModelPlaying}, ActualPlayer: ${isActuallyPlaying}`);
      
      // 如果播放器实际在播放，则暂停；否则开始/恢复播放
      if (isActuallyPlaying) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Player is actually playing, will pause');
        await this.pause();
      } else {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Player is not playing, will start/resume play');
        await this.startPlayOrResumePlay();
      }
      
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Play/pause command executed successfully');
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService onPlayPause error: ${error}`);
      throw new Error;
    }
  }
  
  /**
   * 处理来自卡片的下一首命令
   */
  async onNextSong?(): Promise<void> {
    try {
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Received next song command from widget');
      await this.playNext();
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Next song command executed successfully');
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService onNextSong error: ${error}`);
      throw new Error;
    }
  }
  
  /**
   * 处理来自卡片的上一首命令
   */
  async onPreviousSong?(): Promise<void> {
    try {
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Received previous song command from widget');
      await this.playPrevious();
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Previous song command executed successfully');
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService onPreviousSong error: ${error}`);
      throw new Error;
    }
  }
  
  /**
   * 处理来自卡片的拖动进度命令
   */
  async onSeekTo?(position: number): Promise<void> {
    try {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Received seek to command from widget - position: ${position}`);
      await this.seekTo(position.toString());
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Seek to command executed successfully');
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService onSeekTo error: ${error}`);
      throw new Error;
    }
  }
  
  /**
   * 处理来自卡片的状态请求命令
   */
  async onStateRequest?(): Promise<void> {
    try {
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Received state request from widget');
      await this.broadcastCurrentState();
      LogUtils.getInstance().LOGI('UnifiedPlayerService: State request handled successfully');
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService onStateRequest error: ${error}`);
      throw new Error;
    }
  }

  // ==================== 状态同步服务访问方法 ====================
  
  /**
   * 获取状态同步服务实例
   */
  getStateSyncService(): IStateSyncService {
    return this.stateSync;
  }
  
  /**
   * 手动广播当前状态（用于响应卡片的状态请求）
   */
  async broadcastCurrentState(): Promise<void> {
    try {
      const currentState = this.getCurrentState();
      await this.stateSync.broadcastState(currentState);
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Current state broadcasted manually');
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService broadcastCurrentState error: ${error}`);
      throw new Error;
    }
  }

  // ==================== 私有辅助方法 ====================
  
  /**
   * 更新状态模型中的播放列表状态
   */
  private updatePlaylistStateInModel(): void {
    try {
      const currentIndex = this.playlistModel.getCurrentIndex();
      const totalCount = this.playlistModel.getTotalCount();
      const playMode = this.stateModel.getState().playMode;
      
      const hasNext = this.playlistModel.hasNext(playMode);
      const hasPrevious = this.playlistModel.hasPrevious(playMode);
      
      this.stateModel.updatePlaylistState(hasNext, hasPrevious, totalCount);
      
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Playlist state updated - hasNext=${hasNext}, hasPrevious=${hasPrevious}, totalCount=${totalCount}`);
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService updatePlaylistStateInModel error: ${error}`);
    }
  }

  // ==================== PlayerStateCallback 实现 ====================

  onPrepared(): void {
    LogUtils.getInstance().LOGI('UnifiedPlayerService: Player prepared');
    this.stateModel.updateLoadingState(false);
    
    // 标记播放器已为当前歌曲准备就绪
    this.isPlayerPreparedForCurrentSong = true;
    console.log("Heanup2 UnifiedPlayerService: onPrepared - 播放器已为当前歌曲准备就绪");
    
    setTimeout(() => {
      const ijkPlayer = this.playerManager.getIjkPlayer();
      const isActuallyPlaying = ijkPlayer ? ijkPlayer.isPlaying() : false;
      
      console.log(`Heanup2 UnifiedPlayerService: onPrepared - 实际播放状态: ${isActuallyPlaying}`);
      
      // 强制同步状态模型
      this.stateModel.updatePlayingState(isActuallyPlaying);
      
      // 只触发状态同步，让onPlaybackStarted处理系统播控更新
      LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession state updated after player prepared');
    }, 100);
    
    // 播放器准备完成时更新卡片（移除加载状态）
    this.updateWidgetsForStateChange();
  }

  onPlaybackStarted(): void {
    LogUtils.getInstance().LOGI('UnifiedPlayerService: Playback started (new song)');
    
    // 这个回调只应该在新歌曲开始播放时被调用（通过onPrepared触发）
    // 不应该在暂停恢复时被调用
    
    // 立即更新播放状态
    this.stateModel.updatePlayingState(true);
    
    // 启动进度定时器
    this.startProgressTimer();
    
    // 保存播放状态变化
    this.saveCurrentState();
    
    // 延迟更新系统播控，避免与其他更新冲突
    setTimeout(() => {
      // 使用防抖机制更新系统播控（主要更新播放状态）
      this.updateSessionPlayState();
      LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession state updated for new song playback');
    }, 600); // 增加延迟，避免与onPrepared的更新冲突
    
    // 播放开始时更新卡片显示播放状态
    this.updateWidgetsForPlayStateChange();
    
    LogUtils.getInstance().LOGI('UnifiedPlayerService: New song playback started successfully');
  }

  onPlaybackCompleted(): void {
    LogUtils.getInstance().LOGI('UnifiedPlayerService: Playback completed');
    this.stateModel.updatePlayingState(false);
    this.stopProgressTimer();
    
    // 保存播放状态变化
    this.saveCurrentState();
    
    
    this.updateSessionPlayState();
    
    // 更新卡片显示播放完成状态
    this.updateWidgetsForPlayStateChange();
    
    // 自动播放下一首（如果有的话）
    const currentPlayMode = this.stateModel.getState().playMode;
    if (this.playlistModel.hasNext(currentPlayMode)) {
      setTimeout(() => {
        this.playNext();
      }, 500);
    }
  }

  onPlaybackError(what: number, extra: number): void {
    LogUtils.getInstance().LOGI(`UnifiedPlayerService: Playback error - what: ${what}, extra: ${extra}`);
    this.stateModel.updateLoadingState(false);
    this.stateModel.updatePlayingState(false);
    this.stopProgressTimer();
    
    // 保存播放状态变化
    this.saveCurrentState();
    
    // 创建播放器错误对象
    const playbackError = new PlayerError(
      PlayerErrorType.PLAYBACK_ERROR,
      `Playback error: what=${what}, extra=${extra}`,
      what
    );
    playbackError.recoverable = what !== -1004 && what !== -1007; // 某些错误码可恢复
    playbackError.retryCount = 0;
    
    // 创建错误上下文
    const errorContext: ErrorContext = {
      currentSong: this.getCurrentSong(),
      playlist: this.getPlaylist(),
      currentIndex: this.getCurrentIndex(),
      retryCount: 0,
      isNetworkAvailable: true // 这里可以实际检查网络状态
    };
    
    // 使用错误恢复策略处理错误
    this.errorRecovery.handleError(playbackError, errorContext).then((action: ErrorRecoveryAction) => {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Error recovery action: ${action}`);
      // 这里可以根据 action 执行相应的恢复操作
    }).catch((recoveryError: Error) => {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Error recovery failed: ${recoveryError}`);
    });
  }

  // ========== 卡片更新相关方法 ==========

  /**
   * 创建当前的卡片数据
   */
  private createWidgetData(): WidgetData {
    const currentState = this.stateModel.getState();
    const currentSong = this.playlistModel.getCurrentSong();
    const currentIndex = this.playlistModel.getCurrentIndex();
    const totalCount = this.playlistModel.getTotalCount();
    const playMode = currentState.playMode;

    return {
      playState: {
        isPlaying: currentState.isPlaying,
        isPaused: currentState.isPaused,
        isLoading: currentState.isLoading
      },
      currentSong: {
        id: currentSong?.id || '',
        title: currentSong?.name || '暂无播放',
        artist: currentSong?.artist || '未知艺术家',
        album: currentSong?.album || '未知专辑',
        coverImagePath: currentSong?.pixelMapPath || '',
        duration: this.parseDuration(currentSong?.duration || '0')
      },
      progress: {
        currentPosition: currentState.currentPosition,
        duration: currentState.duration,
        percentage: currentState.duration > 0 ? (currentState.currentPosition / currentState.duration) * 100 : 0,
        currentTimeText: this.formatTime(currentState.currentPosition),
        totalTimeText: this.formatTime(currentState.duration)
      },
      playlist: {
        hasNext: this.playlistModel.hasNext(playMode),
        hasPrevious: this.playlistModel.hasPrevious(playMode),
        currentIndex: currentIndex,
        totalCount: totalCount
      },
      config: {
        size: WidgetSize.MEDIUM, // 默认尺寸，实际会根据卡片尺寸适配
        theme: WidgetTheme.AUTO,
        showProgress: true,
        showCover: true
      }
    };
  }

  /**
   * 播放状态变化时更新卡片
   */
  private async updateWidgetsForPlayStateChange(): Promise<void> {
    try {
      const widgetData = this.createWidgetData();
      await this.widgetUpdateService.updateAllForms(widgetData);
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Widgets updated for play state change`);
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to update widgets for play state change: ${error}`);
    }
  }

  /**
   * 歌曲变化时更新卡片
   */
  private async updateWidgetsForSongChange(song: VideoItem, forceUpdate: boolean = false): Promise<void> {
    try {
      const widgetData = this.createWidgetData();
      
      if (forceUpdate) {
        // 强制更新（忽略防抖），用于重要事件如歌曲切换
        await this.widgetUpdateService.forceUpdateAllForms(widgetData);
        LogUtils.getInstance().LOGI(`UnifiedPlayerService: Widgets force updated for song change: ${song.name}`);
      } else {
        await this.widgetUpdateService.updateAllForms(widgetData);
        LogUtils.getInstance().LOGI(`UnifiedPlayerService: Widgets updated for song change: ${song.name}`);
      }
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to update widgets for song change: ${error}`);
    }
  }

  /**
   * 进度变化时更新卡片（防抖处理）
   */
  private async updateWidgetsForProgressChange(progress: PlayProgress): Promise<void> {
    try {
      // 进度更新很频繁，让防抖机制发挥作用
      const widgetData = this.createWidgetData();
      await this.widgetUpdateService.updateAllForms(widgetData);
      // 不记录日志，避免过多输出
    } catch (error) {
      // 进度更新失败不影响播放，只记录错误
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to update widgets for progress change: ${error}`);
    }
  }

  /**
   * 状态变化时更新卡片
   */
  public async updateWidgetsForStateChange(): Promise<void> {
    try {
      const widgetData = this.createWidgetData();
      await this.widgetUpdateService.updateAllForms(widgetData);
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Widgets updated for state change`);
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to update widgets for state change: ${error}`);
    }
  }

  /**
   * 播放列表变化时更新卡片
   */
  private async updateWidgetsForPlaylistChange(): Promise<void> {
    try {
      const widgetData = this.createWidgetData();
      await this.widgetUpdateService.updateAllForms(widgetData);
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Widgets updated for playlist change`);
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to update widgets for playlist change: ${error}`);
    }
  }

  /**
   * 应用启动时初始化卡片显示
   */
  public async initializeWidgetDisplay(): Promise<void> {
    try {
      const widgetData = this.createWidgetData();
      await this.widgetUpdateService.forceUpdateAllForms(widgetData);
      LogUtils.getInstance().LOGI('UnifiedPlayerService: Widget display initialized');
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to initialize widget display: ${error}`);
    }
  }

  /**
   * 获取卡片更新统计信息
   */
  public getWidgetUpdateStats(): UpdateStats {
    return this.widgetUpdateService.getUpdateStats();
  }

  /**
   * 重置卡片更新统计
   */
  public resetWidgetUpdateStats(): void {
    this.widgetUpdateService.resetStats();
  }

  /**
   * 格式化时间为 MM:SS 格式
   */
  private formatTime(timeInMs: number): string {
    const totalSeconds = Math.floor(timeInMs / 1000);
    const minutes = Math.floor(totalSeconds / 60);
    const seconds = totalSeconds % 60;
    return `${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
  }

  /**
   * 解析时长字符串为毫秒数
   */
  private parseDuration(durationStr: string): number {
    if (!durationStr || durationStr === '0') {
      return 0;
    }

    try {

      // 如果是纯数字，假设是秒数
      const numValue = parseFloat(durationStr);
      if (!isNaN(numValue)) {
        const result = Math.floor(numValue * 1000); // 转换为毫秒
        return result;
      }

      // 如果包含冒号，解析为 MM:SS 或 HH:MM:SS 格式
      if (durationStr.includes(':')) {
        const parts = durationStr.split(':').map(part => parseInt(part, 10));
        let totalSeconds = 0;

        if (parts.length === 2) {
          // MM:SS 格式
          totalSeconds = parts[0] * 60 + parts[1];
        } else if (parts.length === 3) {
          // HH:MM:SS 格式
          totalSeconds = parts[0] * 3600 + parts[1] * 60 + parts[2];
        }

        const result = totalSeconds * 1000; // 转换为毫秒
        return result;
      }

      return 0;
    } catch (error) {
      return 0;
    }
  }

  // ==================== PlayerStateCallback 实现 ====================


  

  /**
   * 转换播放模式为AVSession循环模式
   */
  private convertPlayModeToLoopMode(playMode: number): avSession.LoopMode {
    switch (playMode) {
      case PlayMode.SINGLE_REPEAT:
        return avSession.LoopMode.LOOP_MODE_SINGLE;
      case PlayMode.NORMAL:
        return avSession.LoopMode.LOOP_MODE_LIST;
      case PlayMode.RANDOM:
        return avSession.LoopMode.LOOP_MODE_SHUFFLE;
      case PlayMode.SEQUENCE:
      default:
        return avSession.LoopMode.LOOP_MODE_SEQUENCE;
    }
  }

  /**
   * 更新AVSession播放状态（带防抖）
   */
  private updateSessionPlayState(): void {
    // 清除之前的定时器
    if (this.avSessionUpdateTimer !== -1) {
      clearTimeout(this.avSessionUpdateTimer);
    }
    
    // 增加防抖延迟到500ms，减少频繁更新
    this.avSessionUpdateTimer = setTimeout(() => {
      this.doUpdateSessionPlayState();
    }, 500);
  }

  /**
   * 实际执行AVSession播放状态更新
   */
  private doUpdateSessionPlayState(): void {
    try {
      if (!this.avSessionController) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession controller not initialized');
        return;
      }

      // 避免过于频繁的更新（最小间隔500ms）
      const now = Date.now();
      if (now - this.lastAvSessionUpdate < 500) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Skipping AVSession update due to rate limit');
        return;
      }

      const currentSong = this.playlistModel.getCurrentSong();
      const currentPosition = this.getCurrentPosition();
      
      // 优先从播放器获取实际duration
      let duration = 0;
        const ijkPlayer = this.playerManager.getIjkPlayer();
        if (ijkPlayer) {
          duration = ijkPlayer.getDuration();
        }
        if (duration <= 0 && currentSong?.duration) {
          duration = this.parseDuration(currentSong.duration);
        }
      
      const currentState = this.stateModel.getState();

      // 按照官方文档要求设置完整的播放状态
      const playbackState: avSession.AVPlaybackState = {
        // 播放状态
        state: ijkPlayer?.isPlaying() ? avSession.PlaybackState.PLAYBACK_STATE_PLAY : avSession.PlaybackState.PLAYBACK_STATE_PAUSE,
        
        // 播放速度
        speed: currentState.speed || 1.0,
        
        // 循环模式
        loopMode: this.convertPlayModeToLoopMode(currentState.playMode),
        
        // 收藏状态
        isFavorite: false // 可以根据实际收藏状态设置
      };
      
      // 只有当duration > 0时才设置位置信息，避免进度条显示问题
      if (duration > 0) {
        playbackState.position = {
          elapsedTime: Math.max(0, currentPosition), // 已播放时间（毫秒）
          updateTime: Date.now() // 更新时间戳
        };
        playbackState.bufferedTime = Math.max(currentPosition, 0);
      } else {
        LogUtils.getInstance().LOGI(`UnifiedPlayerService: Skipping position info due to invalid duration: ${duration}ms`);
      }

      this.avSessionController.setAvSessionPlayState(playbackState);
      
      // 记录上次更新时间
      this.lastAvSessionUpdate = now;
      
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: AVSession play state updated successfully`);
      
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to update AVSession play state: ${error}`);
    }
  }

  /**
   * 设置当前播放模式到AVSession
   */
  private setCurrentPlayMode(): void {
    try {
      if (!this.avSessionController) {
        return;
      }

      const currentSong = this.playlistModel.getCurrentSong();
      if (!currentSong) {
        return;
      }

      // 修复duration转换问题 - 优先从播放器获取实际duration
      let duration = 0;
      try {
        const ijkPlayer = this.playerManager.getIjkPlayer();
        if (ijkPlayer) {
          const playerDuration = ijkPlayer.getDuration();
          if (playerDuration > 0) {
            duration = playerDuration;
            LogUtils.getInstance().LOGI(`UnifiedPlayerService: Using player duration: ${duration}ms`);
          } else {
            // 备用方案：解析VideoItem中的duration
            duration = currentSong.duration ? this.parseDuration(currentSong.duration) : 0;
            LogUtils.getInstance().LOGI(`UnifiedPlayerService: Using parsed duration: ${duration}ms from '${currentSong.duration}'`);
          }
        } else {
          duration = currentSong.duration ? this.parseDuration(currentSong.duration) : 0;
          LogUtils.getInstance().LOGI(`UnifiedPlayerService: No player available, using parsed duration: ${duration}ms`);
        }
      } catch (error) {
        duration = currentSong.duration ? this.parseDuration(currentSong.duration) : 0;
        LogUtils.getInstance().LOGI(`UnifiedPlayerService: Error getting player duration, using parsed: ${duration}ms, error: ${error}`);
      }
      
      // 获取歌词内容（如果有的话）
      const lyricContent = ''; // 这里可以根据需要获取歌词内容

      this.avSessionController.setAVMetadataMusic(currentSong, duration, lyricContent);
      
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: AVSession metadata updated for ${currentSong.name} with duration ${duration}ms`);
      
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to set current play mode: ${error}`);
    }
  }

  /**
   * 更新AVSession元数据（带防抖和智能更新）
   */
  private async updateAvSessionMetadata(song: VideoItem): Promise<void> {
    // 清除之前的定时器
    if (this.avMetadataUpdateTimer !== -1) {
      clearTimeout(this.avMetadataUpdateTimer);
    }
    
    // 如果播放器还没准备好，延迟更新等待播放器准备完成
    const ijkPlayer = this.playerManager.getIjkPlayer();
    const playerDuration = ijkPlayer ? ijkPlayer.getDuration() : 0;
    const shouldWaitForPlayer = playerDuration <= 0 && this.isPlayerPreparedForCurrentSong === false;
    
    if (shouldWaitForPlayer) {
      // 播放器还没准备好，延迟更新
      this.avMetadataUpdateTimer = setTimeout(() => {
        this.doUpdateAvSessionMetadata(song);
      }, 800);
    } else {
      // 播放器已准备好或者不需要等待，稍微延迟更新
      this.avMetadataUpdateTimer = setTimeout(() => {
        this.doUpdateAvSessionMetadata(song);
      }, 300);
    }
  }

  /**
   * 实际执行AVSession元数据更新
   */
  private async doUpdateAvSessionMetadata(song: VideoItem): Promise<void> {
    try {
      if (!this.avSessionController) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: AVSession controller not initialized');
        return;
      }

      // 避免过于频繁的元数据更新（最小间隔600ms）
      const now = Date.now();
      if (now - this.lastAvMetadataUpdate < 600) {
        LogUtils.getInstance().LOGI('UnifiedPlayerService: Skipping AVSession metadata update due to rate limit');
        return;
      }

      // 调试：打印VideoItem的duration字段
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: VideoItem duration field - value: '${song.duration}', type: ${typeof song.duration}`);

      // 智能获取最准确的duration
      let duration = 0;
      try {
        const ijkPlayer = this.playerManager.getIjkPlayer();
        if (ijkPlayer && this.isPlayerPreparedForCurrentSong) {
          const playerDuration = ijkPlayer.getDuration();
          LogUtils.getInstance().LOGI(`UnifiedPlayerService: Player getDuration() returned: ${playerDuration}ms`);
          if (playerDuration > 0) {
            duration = playerDuration;
            LogUtils.getInstance().LOGI(`UnifiedPlayerService: Using player duration: ${duration}ms`);
          } else {
            // 备用方案：解析VideoItem中的duration
            duration = song.duration ? this.parseDuration(song.duration) : 0;
            LogUtils.getInstance().LOGI(`UnifiedPlayerService: Player duration invalid, using parsed duration: ${duration}ms from '${song.duration}'`);
          }
        } else {
          duration = song.duration ? this.parseDuration(song.duration) : 0;
          LogUtils.getInstance().LOGI(`UnifiedPlayerService: Player not ready, using parsed duration: ${duration}ms from '${song.duration}'`);
        }
      } catch (error) {
        duration = song.duration ? this.parseDuration(song.duration) : 0;
        LogUtils.getInstance().LOGI(`UnifiedPlayerService: Error getting player duration, using parsed: ${duration}ms from '${song.duration}', error: ${error}`);
      }
      
      // 最终验证duration
      if (isNaN(duration) || duration <= 0) {
        LogUtils.getInstance().LOGI(`UnifiedPlayerService: Final duration is invalid (${duration}), setting to 0`);
        duration = 0;
      }
      
      // 获取歌词内容（如果有的话）
      const lyricContent = song.lyricContent || '';

      LogUtils.getInstance().LOGI(`UnifiedPlayerService: About to call setAVMetadataMusic with duration: ${duration}ms (type: ${typeof duration})`);
      await this.avSessionController.setAVMetadataMusic(song, duration, lyricContent);
      
      // 记录更新时间
      this.lastAvMetadataUpdate = now;
      
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: AVSession metadata updated for ${song.name} with duration ${duration}ms`);
      
    } catch (error) {
      LogUtils.getInstance().LOGI(`UnifiedPlayerService: Failed to update AVSession metadata: ${error}`);
    }
  }

  // ==================== 辅助方法 ====================


}