import { DataPersistenceService, PlaylistSyncService } from './DataPersistenceService';
import { VideoItem } from '../../viewmodel/VideoItem';
import { PlayMode } from './PlayerStateModel';
import { LogUtils } from '@ohos/ijkplayer';

/**
 * DataPersistenceService 测试类
 * 用于验证数据持久化功能的正确性
 */
export class DataPersistenceServiceTest {
  private dataPersistence: DataPersistenceService;
  private playlistSync: PlaylistSyncService;
  
  constructor() {
    this.dataPersistence = DataPersistenceService.getInstance();
    this.playlistSync = PlaylistSyncService.getInstance();
  }
  
  /**
   * 测试播放进度记忆功能
   */
  async testPlaybackProgressMemory(): Promise<boolean> {
    try {
      const testSongId = 'test_song_001';
      const testFilePath = '/storage/test/song.mp3';
      const testPosition = 120000; // 2分钟
      const testDuration = 300000; // 5分钟
      
      // 测试保存播放进度
      await this.dataPersistence.savePlaybackProgress(testSongId, testFilePath, testPosition, testDuration);
      LogUtils.getInstance().LOGI('DataPersistenceServiceTest: Progress saved successfully');
      
      // 测试加载播放进度
      const loadedProgress = await this.dataPersistence.loadPlaybackProgress(testSongId);
      if (!loadedProgress) {
        LogUtils.getInstance().LOGE('DataPersistenceServiceTest: Failed to load progress');
        return false;
      }
      
      // 验证数据正确性
      if (loadedProgress.position !== testPosition || 
          loadedProgress.duration !== testDuration ||
          loadedProgress.filePath !== testFilePath) {
        LogUtils.getInstance().LOGE('DataPersistenceServiceTest: Progress data mismatch');
        return false;
      }
      
      // 测试清除播放进度
      await this.dataPersistence.clearPlaybackProgress(testSongId);
      const clearedProgress = await this.dataPersistence.loadPlaybackProgress(testSongId);
      if (clearedProgress !== null) {
        LogUtils.getInstance().LOGE('DataPersistenceServiceTest: Progress not cleared properly');
        return false;
      }
      
      LogUtils.getInstance().LOGI('DataPersistenceServiceTest: Playback progress memory test passed');
      return true;
    } catch (error) {
      LogUtils.getInstance().LOGE(`DataPersistenceServiceTest: Progress memory test failed: ${error}`);
      return false;
    }
  }
  
  /**
   * 测试播放列表同步功能
   */
  async testPlaylistSync(): Promise<boolean> {
    try {
      // 创建测试播放列表
      const testPlaylist: VideoItem[] = [
        {
          name: 'Test Song 1',
          filePath: '/storage/test/song1.mp3',
          artist: 'Test Artist 1',
          album: 'Test Album',
          pixelMapPath: ''
        } as VideoItem,
        {
          name: 'Test Song 2', 
          filePath: '/storage/test/song2.mp3',
          artist: 'Test Artist 2',
          album: 'Test Album',
          pixelMapPath: ''
        } as VideoItem
      ];
      
      const testIndex = 1;
      const testPlayMode = PlayMode.RANDOM;
      
      // 测试保存播放列表
      await this.dataPersistence.savePlaylist(testPlaylist, testIndex, testPlayMode);
      LogUtils.getInstance().LOGI('DataPersistenceServiceTest: Playlist saved successfully');
      
      // 测试加载播放列表
      const loadedPlaylist = await this.dataPersistence.loadPlaylist();
      if (!loadedPlaylist) {
        LogUtils.getInstance().LOGE('DataPersistenceServiceTest: Failed to load playlist');
        return false;
      }
      
      // 验证数据正确性
      if (loadedPlaylist.songs.length !== testPlaylist.length ||
          loadedPlaylist.currentIndex !== testIndex ||
          loadedPlaylist.playMode !== testPlayMode) {
        LogUtils.getInstance().LOGE('DataPersistenceServiceTest: Playlist data mismatch');
        return false;
      }
      
      // 验证歌曲数据
      for (let i = 0; i < testPlaylist.length; i++) {
        if (loadedPlaylist.songs[i].name !== testPlaylist[i].name ||
            loadedPlaylist.songs[i].filePath !== testPlaylist[i].filePath) {
          LogUtils.getInstance().LOGE(`DataPersistenceServiceTest: Song ${i} data mismatch`);
          return false;
        }
      }
      
      LogUtils.getInstance().LOGI('DataPersistenceServiceTest: Playlist sync test passed');
      return true;
    } catch (error) {
      LogUtils.getInstance().LOGE(`DataPersistenceServiceTest: Playlist sync test failed: ${error}`);
      return false;
    }
  }
  
  /**
   * 测试双向同步功能
   */
  async testBidirectionalSync(): Promise<boolean> {
    try {
      const localPlaylist: VideoItem[] = [
        {
          name: 'Local Song',
          filePath: '/storage/local/song.mp3',
          artist: 'Local Artist',
          album: 'Local Album',
          pixelMapPath: ''
        } as VideoItem
      ];
      
      const localIndex = 0;
      const localPlayMode = PlayMode.SEQUENCE;
      
      // 测试双向同步
      const syncedData = await this.playlistSync.bidirectionalSync(localPlaylist, localIndex, localPlayMode);
      
      if (!syncedData) {
        LogUtils.getInstance().LOGE('DataPersistenceServiceTest: Bidirectional sync returned null');
        return false;
      }
      
      // 验证同步结果
      if (syncedData.songs.length === 0) {
        LogUtils.getInstance().LOGE('DataPersistenceServiceTest: Synced playlist is empty');
        return false;
      }
      
      LogUtils.getInstance().LOGI('DataPersistenceServiceTest: Bidirectional sync test passed');
      return true;
    } catch (error) {
      LogUtils.getInstance().LOGE(`DataPersistenceServiceTest: Bidirectional sync test failed: ${error}`);
      return false;
    }
  }
  
  /**
   * 运行所有测试
   */
  async runAllTests(): Promise<boolean> {
    LogUtils.getInstance().LOGI('DataPersistenceServiceTest: Starting all tests...');
    
    const progressTest = await this.testPlaybackProgressMemory();
    const playlistTest = await this.testPlaylistSync();
    const syncTest = await this.testBidirectionalSync();
    
    const allPassed = progressTest && playlistTest && syncTest;
    
    if (allPassed) {
      LogUtils.getInstance().LOGI('DataPersistenceServiceTest: All tests passed!');
    } else {
      LogUtils.getInstance().LOGE('DataPersistenceServiceTest: Some tests failed');
    }
    
    return allPassed;
  }
}