import { RemoteDriveManager } from '../common/util/RemoteDriveManager';
import { WebDavAccount } from '../viewmodel/WebDavAccount';
import { VideoItem } from '../viewmodel/VideoItem';
import { FileInfo } from '../viewmodel/FileInfo';
import { RemoteDriveManagerStates } from '../common/enums/RemoteDriveManagerStates';
import Logger from '../common/util/Logger';
import { router } from '@kit.ArkUI';
import { CommonConstants } from '../common/constants/CommonConstants';
import { Constants } from '../Constants';
import { picker, fileUri } from '@kit.CoreFileKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { PreferencesUtil } from '@pura/harmony-utils';
import { UploadTaskDataSource } from '../viewmodel/UploadTask';
import { promptAction } from '@kit.ArkUI';
import fs from '@ohos.file.fs';
import ReqPermissionUtil from '../common/util/ReqPermissionUtil';
import { ButtonFancyModifier, ShadowModifier, SymbolGlyphFancyModifier } from '../common/util/AttributeModifierUtil';
import { SegmentButton } from '@kit.ArkUI';
import { SegmentButtonOptions, SegmentButtonItemTuple } from '@kit.ArkUI';

const TAG = 'heanup UploadMusicPage';

export interface LocalFileItem {
  name: string;
  path: string;
  isDirectory: boolean;
  isAudioFile: boolean;
}

interface LocalAudioFile {
  fullPath: string;
  relativePath: string;
}

@Entry
@Component
export struct UploadMusicPage {
  @StorageProp('topSafeHeight') topSafeHeight: number = 0;
  @StorageProp('bottomSafeHeight') bottomSafeHeight: number = 0;
  @StorageProp('themeColor') themeColor: string = CommonConstants.DEFAULT_THEME_COLOR;
  @StorageProp('isDarkMode') isDarkMode: boolean = false;
  // 页面状态变量
  @State selectedFiles: string[] = [];
  @State selectedFileNames: string[] = [];
  @State selectedFileTypes: string[] = []; // 'file' 或 'folder'
  @State accounts: WebDavAccount[] = [];
  // 文件浏览器状态
  @State isShowFileBrowser: boolean = false;
  @State fileBrowserPath: string = '';
  @State browserFiles: LocalFileItem[] = [];
  @State selectedBrowserItems: Set<string> = new Set();
  @State isLoadingFiles: boolean = false;
  @State selectedAccount: WebDavAccount | null = null;
  @State uploadPath: string = '/';
  @State availablePaths: string[] = [];
  @State duplicateAction: string = 'skip';
  // SegmentButton 重复文件处理选项
  @State duplicateOptions: SegmentButtonOptions = SegmentButtonOptions.capsule({
    buttons: [{ text: '跳过' }, { text: '覆盖' }, { text: '重命名' }] as SegmentButtonItemTuple,
    backgroundColor: $r('app.color.index_background'),
    selectedBackgroundColor: $r('app.color.start_window_background'),
    selectedFontColor: $r('app.color.text_color'),
    buttonPadding: { top: 10, bottom: 10 },
    multiply: false
  });
  @State @Watch('onDuplicateActionChange') selectedDuplicateIndex: number[] = [0];
  @State uploadProgress: number = 0;
  @State uploadSpeed: string = '0 KB/s';
  @State uploadedCount: number = 0;
  @State totalUploadCount: number = 0;
  @State isUploading: boolean = false;
  @State uploadQueue: VideoItem[] = [];
  @State finishQueue: VideoItem[] = [];
  @State currentTask: VideoItem | null = null;
  @State isShowPathBrowser: boolean = false;
  @State currentBrowsePath: string = '/';
  @State browseFolders: FileInfo[] = [];
  @State isLoadingFolders: boolean = false;
  @State pendingCount: number = 0;
  @State finishedCount: number = 0;
  // RemoteDriveManager实例
  private webdavManager: RemoteDriveManager = RemoteDriveManager.getInstance();
  // 性能优化：使用LazyDataSource优化队列列表渲染
  // LazyForEach配合IDataSource可以实现按需加载，避免一次性渲染大量列表项
  // 对于包含数百个上传任务的队列，可以显著提升UI响应性能
  private uploadQueueDataSource: UploadTaskDataSource = new UploadTaskDataSource();
  private finishQueueDataSource: UploadTaskDataSource = new UploadTaskDataSource();
  // 事件处理器引用
  private eventHandler: (event: string) => void = (event: string) => {
    this.handleUploadEvent(event);
  };
  private cachedDownloadRoot: string = '';
  private localBrowseRoot: string = '';

  // 重复文件处理方式变化监听
  onDuplicateActionChange() {
    if (this.selectedDuplicateIndex.length > 0) {
      const actionMap = ['skip', 'overwrite', 'rename'];
      this.duplicateAction = actionMap[this.selectedDuplicateIndex[0]];
      Logger.info(TAG, `重复文件处理方式变更为: ${this.duplicateAction}`);
    }
  }

  // 获取当前重复文件处理方式的描述
  private getActionDescription(): string {
    switch (this.duplicateAction) {
      case 'skip':
        return '保留远程文件，不上传';
      case 'overwrite':
        return '替换远程文件';
      case 'rename':
        return '自动重命名后上传';
      default:
        return '保留远程文件，不上传';
    }
  }

  aboutToAppear(): void {
    Logger.info(TAG, '页面即将显示');

    // 加载用户设置
    this.loadUserSettings();

    // 加载WebDAV账户列表
    this.loadAccounts();

    // 从路由参数获取预选账户ID
    const params = router.getParams() as Record<string, Object>;
    if (params && params['accountId']) {
      const accountId = params['accountId'] as number;
      this.preselectAccount(accountId);
    }

    // 订阅RemoteDriveManager的上传事件
    this.subscribeUploadEvents();
  }

  /**
   * 加载用户设置
   */
  private loadUserSettings(): void {
    try {
      // 加载默认重复文件处理方式
      this.duplicateAction = PreferencesUtil.getStringSync('webdavUploadDuplicateAction', 'skip');

      // 根据加载的设置初始化SegmentButton选择索引
      const actionMap = ['skip', 'overwrite', 'rename'];
      const index = actionMap.indexOf(this.duplicateAction);
      this.selectedDuplicateIndex = [index >= 0 ? index : 0];

      Logger.info(TAG, `加载用户设置 - 重复文件处理: ${this.duplicateAction}`);
    } catch (error) {
      const err = error as Error;
      Logger.error(TAG, `加载用户设置失败: ${err.message}`);
    }
  }

  aboutToDisappear(): void {
    Logger.info(TAG, '页面即将销毁');

    // 取消订阅事件
    this.unsubscribeUploadEvents();
  }

  /**
   * 加载WebDAV账户列表
   */
  private loadAccounts(): void {
    try {
      this.accounts = this.webdavManager.getAllWebDavAccounts();
      Logger.info(TAG, `加载了 ${this.accounts.length} 个WebDAV账户`);

      // 如果没有选中账户且有可用账户，默认选择第一个
      if (!this.selectedAccount && this.accounts.length > 0) {
        this.selectedAccount = this.accounts[0];
        this.applyDefaultUploadPath(this.selectedAccount);
      }
    } catch (error) {
      const err = error as Error;
      Logger.error(TAG, `加载账户列表失败: ${err.message}`);
    }
  }

  private getPreferredDownloadRoot(): string {
    if (this.cachedDownloadRoot) {
      return this.cachedDownloadRoot;
    }
    try {
      let saved = PreferencesUtil.getStringSync('download_path', '');
      if (saved && saved.length > 0) {
        this.cachedDownloadRoot = this.normalizeLocalDirectory(saved);
        if (this.cachedDownloadRoot) {
          return this.cachedDownloadRoot;
        }
      }
    } catch (error) {
      const err = error as Error;
      Logger.warn(TAG, `读取download_path失败: ${err.message}`);
    }
    return '';
  }

  private normalizeLocalDirectory(path: string): string {
    if (!path || path.length === 0) {
      return '';
    }
    let normalized = path.replace(/\\/g, '/');
    normalized = normalized.replace(/\/+$/, '');
    return normalized;
  }

  private ensureDirectoryAccessible(path: string): boolean {
    if (!path || path.length === 0) {
      return false;
    }
    try {
      const stat = fs.statSync(path);
      return stat.isDirectory();
    } catch (_error) {
      try {
        fs.mkdirSync(path);
        return true;
      } catch (createErr) {
        const err = createErr as Error;
        Logger.warn(TAG, `创建目录失败(${path}): ${err.message}`);
        return false;
      }
    }
  }

  private async requestDownloadRootFromSystem(force: boolean = false): Promise<string> {
    try {
      const documentViewPicker = new picker.DocumentViewPicker();
      const documentSaveResult = await documentViewPicker.save({ pickerMode: picker.DocumentPickerMode.DOWNLOAD });
      if (documentSaveResult && documentSaveResult.length > 0) {
        const resolvedPath = new fileUri.FileUri(documentSaveResult[0]).path;
        const normalized = this.normalizeLocalDirectory(resolvedPath);
        if (normalized) {
          this.cachedDownloadRoot = normalized;
          const storedValue = normalized.endsWith('/') ? normalized : `${normalized}/`;
          PreferencesUtil.putSync('download_path', storedValue);
          await ReqPermissionUtil.persistPermission(documentSaveResult[0]);
          return normalized;
        }
      }
    } catch (error) {
      const err = error as Error;
      Logger.error(TAG, `请求系统下载目录失败: ${err.message}`);
    }
    return '';
  }

  private async resolveInitialBrowserPath(): Promise<string> {
    let preferred = this.getPreferredDownloadRoot();
    if (preferred && this.ensureDirectoryAccessible(preferred)) {
      return preferred;
    }
    const requested = await this.requestDownloadRootFromSystem();
    if (requested && this.ensureDirectoryAccessible(requested)) {
      return requested;
    }
    promptAction.showToast({
      message: '请先在本地音乐页授权下载目录后再使用此功能',
      duration: 2000
    });
    throw new Error('未授权任何本地目录');
  }

  private normalizeBrowsePath(path: string): string {
    if (!path || path.trim().length === 0) {
      return '/';
    }
    let normalized = path.trim().replace(/\\/g, '/');
    if (!normalized.startsWith('/')) {
      normalized = `/${normalized}`;
    }
    normalized = normalized.replace(/\/+/g, '/');
    if (normalized.length > 1 && normalized.endsWith('/')) {
      normalized = normalized.slice(0, -1);
    }
    return normalized || '/';
  }

  /**
   * 预选指定账户
   * @param accountId 账户ID
   */
  private preselectAccount(accountId: number): void {
    try {
      for (let i = 0; i < this.accounts.length; i++) {
        const account = this.accounts[i];
        if (account.id === accountId) {
          this.selectedAccount = account;
          this.applyDefaultUploadPath(account);
          Logger.info(TAG, `预选账户: ${account.name}`);
          break;
        }
      }
    } catch (error) {
      const err = error as Error;
      Logger.error(TAG, `预选账户失败: ${err.message}`);
    }
  }

  /**
   * 订阅RemoteDriveManager的上传事件
   */
  private subscribeUploadEvents(): void {
    this.webdavManager.subscribe(this.eventHandler);
    Logger.info(TAG, '已订阅上传事件');
  }

  /**
   * 取消订阅RemoteDriveManager的上传事件
   */
  private unsubscribeUploadEvents(): void {
    this.webdavManager.unsubscribe(this.eventHandler);
    Logger.info(TAG, '已取消订阅上传事件');
  }

  /**
   * 处理上传事件
   * @param event 事件类型
   */
  private handleUploadEvent(event: string): void {
    Logger.info(TAG, `收到上传事件: ${event}`);

    switch (event) {
      case RemoteDriveManagerStates.UploadStart:
        this.handleUploadStart();
        break;
      case RemoteDriveManagerStates.UploadProgress:
        this.handleUploadProgress();
        break;
      case RemoteDriveManagerStates.UploadSuccess:
        this.handleUploadSuccess();
        break;
      case RemoteDriveManagerStates.UploadFailed:
        this.handleUploadFailed();
        break;
      case RemoteDriveManagerStates.UploadPaused:
        this.handleUploadPaused();
        break;
      case RemoteDriveManagerStates.UploadResumed:
        this.handleUploadResumed();
        break;
      case RemoteDriveManagerStates.SetCurrentUploadTask:
        this.handleCurrentTaskChanged();
        break;
      case RemoteDriveManagerStates.ChangeUploadQueue:
        this.handleUploadQueueChanged();
        break;
      case RemoteDriveManagerStates.ChangeFinishUploadQueue:
        this.handleFinishQueueChanged();
        break;
    }
  }

  /**
   * 处理上传开始事件
   */
  private handleUploadStart(): void {
    this.isUploading = true;
    Logger.info(TAG, '上传开始');
  }

  /**
   * 处理上传进度更新事件
   */
  private handleUploadProgress(): void {
    const uploaded = this.webdavManager.uploadReceivedSize;
    const total = this.webdavManager.uploadTotalSize;

    if (total > 0) {
      this.uploadProgress = Math.floor((uploaded / total) * 100);

      // 计算上传速度（简化版，实际应该基于时间差计算）
      const speedMBps = uploaded / (1024 * 1024);
      this.uploadSpeed = `${speedMBps.toFixed(2)} MB/s`;
    }

    Logger.info(TAG, `上传进度: ${this.uploadProgress}%`);
  }

  /**
   * 处理上传成功事件
   */
  private handleUploadSuccess(): void {
    this.uploadedCount++;
    Logger.info(TAG, `上传成功，已完成: ${this.uploadedCount}/${this.totalUploadCount}`);
  }

  /**
   * 处理上传失败事件
   */
  private handleUploadFailed(): void {
    Logger.error(TAG, '上传失败');
  }

  /**
   * 处理上传暂停事件
   */
  private handleUploadPaused(): void {
    Logger.info(TAG, '上传已暂停');
  }

  /**
   * 处理上传恢复事件
   */
  private handleUploadResumed(): void {
    Logger.info(TAG, '上传已恢复');
  }

  /**
   * 处理当前任务变更事件
   */
  private handleCurrentTaskChanged(): void {
    const task = this.webdavManager.currentUploadTask;
    if (task) {
      this.currentTask = task.song;
      Logger.info(TAG, `当前上传任务: ${task.song.name}`);
    } else {
      this.currentTask = null;
    }
  }

  /**
   * 处理上传队列变更事件
   */
  private handleUploadQueueChanged(): void {
    const tasks = this.webdavManager.uploadQueue;
    this.uploadQueue = [];
    for (let i = 0; i < tasks.length; i++) {
      this.uploadQueue.push(tasks[i].song);
    }

    this.pendingCount = this.uploadQueue.length;

    if (this.pendingCount === 0) {
      this.isUploading = false;
      this.currentTask = null;
      this.uploadProgress = 0;
      this.uploadSpeed = '0 KB/s';
    }

    this.uploadQueueDataSource.updateTasks(this.uploadQueue);

    Logger.info(TAG, `上传队列更新，当前数量: ${this.pendingCount}`);
  }

  /**
   * 处理完成队列变更事件
   */
  private handleFinishQueueChanged(): void {
    const tasks = this.webdavManager.finishUploadQueue;
    this.finishQueue = [];
    for (let i = 0; i < tasks.length; i++) {
      this.finishQueue.push(tasks[i].song);
    }

    this.finishedCount = this.finishQueue.length;

    this.finishQueueDataSource.updateTasks(this.finishQueue);

    Logger.info(TAG, `完成队列更新，当前数量: ${this.finishedCount}`);
  }

  /**
   * 打开文件选择器
   */
  private async openFilePicker(): Promise<void> {
    try {
      const documentSelectOptions = new picker.DocumentSelectOptions();

      // 设置音频文件过滤器
      documentSelectOptions.fileSuffixFilters = Constants.AUDIO_EXTENSIONS;

      // 支持多选
      documentSelectOptions.maxSelectNumber = 100;

      const documentPicker = new picker.DocumentViewPicker();

      const documentSelectResult = await documentPicker.select(documentSelectOptions);

      if (documentSelectResult && documentSelectResult.length > 0) {
        for (let i = 0; i < documentSelectResult.length; i++) {
          try {
            await ReqPermissionUtil.persistPermission(documentSelectResult[i]);
          } catch (error) {
            const err = error as Error;
            Logger.error(TAG, `持久化授权失败: ${err.message}`);
          }
        }
        Logger.info(TAG, `选择了 ${documentSelectResult.length} 个文件`);

        // 保存选中的文件URI
        this.selectedFiles = documentSelectResult;

        // 提取文件名用于显示
        this.selectedFileNames = [];
        this.selectedFileTypes = [];
        for (let i = 0; i < documentSelectResult.length; i++) {
          const uri = documentSelectResult[i];
          try {
            const fileUriObj = new fileUri.FileUri(uri);
            const fileName = fileUriObj.name;
            this.selectedFileNames.push(fileName);
            this.selectedFileTypes.push('file');
          } catch (error) {
            const err = error as Error;
            Logger.error(TAG, `解析文件URI失败: ${err.message}`);
            this.selectedFileNames.push('未知文件');
            this.selectedFileTypes.push('file');
          }
        }

        Logger.info(TAG, `文件列表: ${JSON.stringify(this.selectedFileNames)}`);
      }
    } catch (error) {
      const err = error as BusinessError;
      Logger.error(TAG, `文件选择失败: ${err.message}`);
    }
  }

  /**
   * 打开文件浏览器
   */
  private async openFileBrowser(): Promise<void> {
    try {
      const initialPath = await this.resolveInitialBrowserPath();
      if (!initialPath) {
        promptAction.showToast({
          message: '无法定位到下载目录，请授予文件访问权限',
          duration: 2000
        });
        return;
      }

      this.fileBrowserPath = initialPath;
      this.localBrowseRoot = initialPath;
      this.selectedBrowserItems.clear();
      this.isShowFileBrowser = true;
      await this.loadLocalFiles(initialPath);
      Logger.info(TAG, `文件浏览器已定位到: ${initialPath}`);
    } catch (error) {
      const err = error as Error;
      Logger.error(TAG, `打开文件浏览器失败: ${err.message}`);
      promptAction.showToast({
        message: err.message || '打开文件浏览器失败',
        duration: 2000
      });
    }
  }

  /**
   * 加载本地文件列表
   */
  private async loadLocalFiles(path: string): Promise<void> {
    try {
      this.isLoadingFiles = true;
      this.browserFiles = [];
      let targetPath = path;
      if (this.localBrowseRoot && !targetPath.startsWith(this.localBrowseRoot)) {
        targetPath = this.localBrowseRoot;
      }
      Logger.info(TAG, `加载目录: ${targetPath}`);

      const files = fs.listFileSync(targetPath);

      for (let i = 0; i < files.length; i++) {
        const fileName = files[i];
        const fullPath = `${targetPath}/${fileName}`;

        try {
          const stat = fs.statSync(fullPath);
          const isDirectory = stat.isDirectory();
          if (fileName.startsWith('.')) {
            continue;
          }
          const lowerFileName = fileName.toLowerCase();
          const isAudioFile = !isDirectory && Constants.AUDIO_EXTENSIONS.some(ext => lowerFileName.endsWith(ext));

          // 只显示文件夹和音频文件
          if (isDirectory || isAudioFile) {
            this.browserFiles.push({
              name: fileName,
              path: fullPath,
              isDirectory: isDirectory,
              isAudioFile: isAudioFile
            });
          }
        } catch (error) {
          Logger.warn(TAG, `无法访问: ${fullPath}`);
        }
      }

      // 排序：文件夹在前，文件在后
      this.browserFiles.sort((a, b) => {
        if (a.isDirectory && !b.isDirectory) return -1;
        if (!a.isDirectory && b.isDirectory) return 1;
        return a.name.localeCompare(b.name);
      });

      Logger.info(TAG, `加载了 ${this.browserFiles.length} 个项目`);
    } catch (error) {
      const err = error as Error;
      Logger.error(TAG, `加载文件列表失败: ${err.message}`);
      promptAction.showToast({
        message: `加载失败: ${err.message}`,
        duration: 2000
      });
    } finally {
      this.isLoadingFiles = false;
    }
  }

  /**
   * 进入子目录
   */
  private async enterDirectory(item: LocalFileItem): Promise<void> {
    if (!item.isDirectory) {
      return;
    }
    if (this.localBrowseRoot && !item.path.startsWith(this.localBrowseRoot)) {
      promptAction.showToast({
        message: '没有此目录的访问权限',
        duration: 2000
      });
      return;
    }
    this.fileBrowserPath = item.path;
    await this.loadLocalFiles(item.path);
  }

  /**
   * 返回上级目录
   */
  private async goBackDirectory(): Promise<void> {
    if (!this.localBrowseRoot) {
      return;
    }
    if (this.fileBrowserPath === this.localBrowseRoot) {
      return;
    }
    const lastSlash = this.fileBrowserPath.lastIndexOf('/');
    if (lastSlash > 0) {
      const parent = this.fileBrowserPath.substring(0, lastSlash);
      if (!parent.startsWith(this.localBrowseRoot)) {
        this.fileBrowserPath = this.localBrowseRoot;
        await this.loadLocalFiles(this.localBrowseRoot);
        return;
      }
      this.fileBrowserPath = parent;
      await this.loadLocalFiles(this.fileBrowserPath);
    }
  }

  /**
   * 切换项目选中状态
   */
  private toggleItemSelection(item: LocalFileItem): void {
    if (this.selectedBrowserItems.has(item.path)) {
      this.selectedBrowserItems.delete(item.path);
    } else {
      this.selectedBrowserItems.add(item.path);
    }
    // 触发UI更新
    this.selectedBrowserItems = new Set(this.selectedBrowserItems);
  }

  /**
   * 确认选择文件
   */
  private async confirmFileSelection(): Promise<void> {
    if (this.selectedBrowserItems.size === 0) {
      promptAction.showToast({
        message: '请至少选择一个项目',
        duration: 2000
      });
      return;
    }

    // 将选中的项目添加到已选列表
    const selectedItems: LocalFileItem[] = [];
    const selectedSet = new Set<string>();
    this.selectedBrowserItems.forEach((path) => {
      const found = this.browserFiles.find((f) => f.path === path);
      if (found && !selectedSet.has(found.path)) {
        selectedSet.add(found.path);
        selectedItems.push(found);
      }
    });

    for (let i = 0; i < selectedItems.length; i++) {
      const item = selectedItems[i];
      const uri = `file://${item.path}`;
      try {
        await ReqPermissionUtil.persistPermission(uri);
      } catch (error) {
        const err = error as Error;
        Logger.error(TAG, `持久化授权失败: ${err.message}`);
      }
      this.selectedFiles.push(uri);
      this.selectedFileNames.push(item.name);
      this.selectedFileTypes.push(item.isDirectory ? 'folder' : 'file');
    }

    promptAction.showToast({
      message: `已添加 ${this.selectedBrowserItems.size} 个项目`,
      duration: 2000
    });

    this.closeFileBrowser();
  }

  /**
   * 关闭文件浏览器
   */
  private closeFileBrowser(): void {
    this.isShowFileBrowser = false;
    this.selectedBrowserItems.clear();
    this.browserFiles = [];
    this.localBrowseRoot = '';
  }

  /**
   * 递归扫描文件夹，获取所有音频文件
   */
  private async scanFolderForAudioFiles(folderPath: string, relativePrefix: string = ''): Promise<LocalAudioFile[]> {
    const audioFiles: LocalAudioFile[] = [];

    try {
      const files = fs.listFileSync(folderPath);

      for (let i = 0; i < files.length; i++) {
        const fileName = files[i];
        const fullPath = `${folderPath}/${fileName}`;

        try {
          const stat = fs.statSync(fullPath);

          if (stat.isDirectory()) {
            const nextPrefix = relativePrefix ? `${relativePrefix}/${fileName}` : fileName;
            const subFiles = await this.scanFolderForAudioFiles(fullPath, nextPrefix);
            audioFiles.push(...subFiles);
          } else {
            const lowerFileName = fileName.toLowerCase();
            const isAudio = Constants.AUDIO_EXTENSIONS.some(ext => lowerFileName.endsWith(ext));
            if (isAudio) {
              const relativePath = relativePrefix ? `${relativePrefix}/${fileName}` : fileName;
              audioFiles.push({
                fullPath,
                relativePath
              });
            }
          }
        } catch (error) {
          const err = error as Error;
          Logger.warn(TAG, `无法访问: ${fullPath}, 错误: ${err.message}`);
        }
      }
    } catch (error) {
      const err = error as Error;
      Logger.error(TAG, `扫描文件夹失败: ${err.message}`);
    }

    return audioFiles;
  }

  private getFileNameFromPath(fullPath: string): string {
    if (!fullPath) {
      return '';
    }
    const normalized = fullPath.replace(/\\/g, '/');
    const lastSlash = normalized.lastIndexOf('/');
    return lastSlash >= 0 ? normalized.substring(lastSlash + 1) : normalized;
  }

  /**
   * 移除已选文件
   * @param index 文件索引
   */
  private removeSelectedFile(index: number): void {
    if (index >= 0 && index < this.selectedFiles.length) {
      this.selectedFiles.splice(index, 1);
      this.selectedFileNames.splice(index, 1);
      this.selectedFileTypes.splice(index, 1);
      Logger.info(TAG, `移除项目，剩余 ${this.selectedFiles.length} 个`);
    }
  }

  /**
   * 选择上传账户
   * @param account 选中的账户
   */
  private selectUploadAccount(account: WebDavAccount): void {
    this.selectedAccount = account;
    this.applyDefaultUploadPath(account);
    Logger.info(TAG, `选择账户: ${account.name}, 上传路径: ${this.uploadPath}`);
  }

  private applyDefaultUploadPath(account: WebDavAccount | null): void {
    if (!account) {
      return;
    }
    const managerAccount = this.webdavManager.currentAccount;
    const managerPath = this.webdavManager.currentPath;
    if (
      managerPath &&
        managerPath.length > 0 &&
        managerAccount &&
        managerAccount.id === account.id
    ) {
      this.uploadPath = managerPath;
    } else {
      this.uploadPath = account.uploadFilePath || '/';
    }
  }

  /**
   * 打开路径浏览器
   */
  private openPathBrowser(): void {
    if (!this.selectedAccount) {
      Logger.warn(TAG, '请先选择账户');
      return;
    }

    Logger.info(TAG, '========== 打开路径浏览器 ==========');
    Logger.info(TAG, `当前上传路径: ${this.uploadPath}`);
    Logger.info(TAG, `选中账户: ${this.selectedAccount.name}`);

    const managerAccount = this.webdavManager.currentAccount;
    const defaultPath =
      managerAccount &&
        managerAccount.id === this.selectedAccount.id &&
      this.webdavManager.currentPath &&
        this.webdavManager.currentPath.length > 0
        ? this.webdavManager.currentPath
        : this.uploadPath;

    this.currentBrowsePath = defaultPath;
    this.isShowPathBrowser = true;

    Logger.info(TAG, `isShowPathBrowser 设置为: ${this.isShowPathBrowser}`);
    Logger.info(TAG, '开始加载文件夹列表...');

    this.loadWebDavFolders(this.currentBrowsePath);
  }

  /**
   * 关闭路径浏览器
   */
  private closePathBrowser(): void {
    Logger.info(TAG, '========== 关闭路径浏览器 ==========');
    this.isShowPathBrowser = false;
    this.browseFolders = [];
  }

  /**
   * 加载WebDAV文件夹列表
   * @param path 路径
   */
  private async loadWebDavFolders(path: string): Promise<void> {
    if (!this.selectedAccount) {
      return;
    }

    try {
      this.isLoadingFolders = true;
      Logger.info(TAG, `加载文件夹列表: ${path}`);

      await this.webdavManager.loadFilesInfoFromAccount(this.selectedAccount, path);

      // 过滤出文件夹
      const allFiles = this.webdavManager.webDavFiles;
      this.browseFolders = [];
      const normalizedCurrent = this.normalizeBrowsePath(this.currentBrowsePath);
      for (let i = 0; i < allFiles.length; i++) {
        const file = allFiles[i];
        if (file.isDirectory) {
          const folderPath = this.normalizeBrowsePath(file.href);
          if (folderPath !== normalizedCurrent) {
            this.browseFolders.push(file);
          }
        }
      }

      Logger.info(TAG, `加载了 ${this.browseFolders.length} 个文件夹`);
    } catch (error) {
      const err = error as Error;
      Logger.error(TAG, `加载文件夹失败: ${err.message}`);
    } finally {
      this.isLoadingFolders = false;
    }
  }

  /**
   * 进入子文件夹
   * @param folder 文件夹信息
   */
  private async enterBrowseFolder(folder: FileInfo): Promise<void> {
    this.currentBrowsePath = folder.href;
    await this.loadWebDavFolders(folder.href);
  }

  /**
   * 返回上级文件夹
   */
  private async goBackBrowseFolder(): Promise<void> {
    if (this.currentBrowsePath === '/') {
      return;
    }

    const lastSlashIndex = this.currentBrowsePath.lastIndexOf('/');
    if (lastSlashIndex > 0) {
      this.currentBrowsePath = this.currentBrowsePath.substring(0, lastSlashIndex);
    } else {
      this.currentBrowsePath = '/';
    }

    await this.loadWebDavFolders(this.currentBrowsePath);
  }

  /**
   * 确认选择路径
   */
  private confirmPathSelection(): void {
    this.uploadPath = this.currentBrowsePath;
    Logger.info(TAG, `选择上传路径: ${this.uploadPath}`);
    this.closePathBrowser();
  }

  /**
   * 开始上传
   */
  private async startUpload(): Promise<void> {
    // 验证
    if (!this.selectedAccount) {
      Logger.warn(TAG, '请先选择账户');
      return;
    }

    if (this.selectedFiles.length === 0) {
      Logger.warn(TAG, '请先选择文件');
      return;
    }

    if (!this.uploadPath) {
      Logger.warn(TAG, '请先选择上传路径');
      return;
    }

    try {
      Logger.info(TAG, '开始上传任务');

      // 显示处理提示
      promptAction.showToast({
        message: '正在处理文件...',
        duration: 2000
      });

      // 构建VideoItem列表
      const songs: VideoItem[] = [];
      let totalFiles = 0;
      let totalFolders = 0;

      for (let i = 0; i < this.selectedFiles.length; i++) {
        const selectedUri = this.selectedFiles[i];
        const displayName = this.selectedFileNames[i];
        const itemType = this.selectedFileTypes[i];

        try {
          const fileUriObj = new fileUri.FileUri(selectedUri);
          const resolvedPath = fileUriObj.path || '';

          if (!resolvedPath) {
            Logger.error(TAG, `无法获取本地路径，跳过: ${selectedUri}`);
            continue;
          }

          if (itemType === 'folder') {
            totalFolders++;
            const folderName = displayName || this.getFileNameFromPath(resolvedPath);
            Logger.info(TAG, `扫描文件夹: ${folderName}`);
            const audioFiles = await this.scanFolderForAudioFiles(resolvedPath, folderName);
            Logger.info(TAG, `文件夹 ${folderName} 包含 ${audioFiles.length} 个音频文件`);

            for (let j = 0; j < audioFiles.length; j++) {
              const audioFile = audioFiles[j];
              const audioFileName = this.getFileNameFromPath(audioFile.fullPath);

              const videoItem = new VideoItem(
                audioFileName,
                `file://${audioFile.fullPath}`,
                audioFile.fullPath,
                CommonConstants.TYPE_LOCAL,
                0,
                '',
                undefined,
                undefined,
                undefined,
                undefined,
                undefined,
                undefined
              );
              videoItem.remote_rel_path = audioFile.relativePath;
              songs.push(videoItem);
            }
          } else {
            // 处理单个文件
            totalFiles++;
            const videoItem = new VideoItem(
              displayName,
              selectedUri,
              resolvedPath,
              CommonConstants.TYPE_LOCAL,
              0,
              '',
              undefined,
              undefined,
              undefined,
              undefined,
              undefined,
              undefined
            );
            videoItem.remote_rel_path = displayName;
            songs.push(videoItem);
          }
        } catch (error) {
          const err = error as Error;
          Logger.error(TAG, `处理项目失败: ${err.message}`);
          continue;
        }
      }

      if (songs.length === 0) {
        promptAction.showToast({
          message: '未找到可上传的音频文件',
          duration: 2000
        });
        Logger.warn(TAG, '未找到可上传的有效文件，取消任务');
        return;
      }

      Logger.info(TAG, `处理完成: ${totalFiles} 个文件, ${totalFolders} 个文件夹, 共 ${songs.length} 个音频文件`);

      promptAction.showToast({
        message: `准备上传 ${songs.length} 个文件`,
        duration: 2000
      });

      // 添加到上传队列，传递用户选择的上传路径
      Logger.info(TAG, `使用上传路径: ${this.uploadPath}`);
      const uniqueSongs = this.deduplicateSongs(songs);
      this.webdavManager.addToUploadQueue(uniqueSongs, this.selectedAccount, this.uploadPath);
      this.totalUploadCount = uniqueSongs.length;
      this.uploadedCount = 0;

      // 开始处理上传队列
      await this.webdavManager.startUploadQueue();

      Logger.info(TAG, '上传任务已启动');
      this.selectedFiles = [];
      this.selectedFileNames = [];
      this.selectedFileTypes = [];
      this.pendingCount = this.webdavManager.uploadQueue.length;
      this.selectedFiles = [];
      this.selectedFileNames = [];
      this.selectedFileTypes = [];
    } catch (error) {
      const err = error as Error;
      Logger.error(TAG, `启动上传失败: ${err.message}`);
      promptAction.showToast({
        message: `上传失败: ${err.message}`,
        duration: 2000
      });
    }
  }

  private deduplicateSongs(songs: VideoItem[]): VideoItem[] {
    const unique: VideoItem[] = [];
    const seen = new Set<string>();
    for (let i = 0; i < songs.length; i++) {
      const song = songs[i];
      const key = song.filePath || song.name;
      if (!key) {
        continue;
      }
      if (seen.has(key)) {
        Logger.warn(TAG, `跳过重复文件: ${song.name}`);
        continue;
      }
      seen.add(key);
      unique.push(song);
    }
    return unique;
  }

  /**
   * 暂停上传
   */
  private pauseUpload(): void {
    this.webdavManager.pauseUploadQueue();
    Logger.info(TAG, '暂停上传');
  }

  /**
   * 恢复上传
   */
  private async resumeUpload(): Promise<void> {
    await this.webdavManager.resumeUploadQueue();
    Logger.info(TAG, '恢复上传');
  }

  /**
   * 取消上传
   */
  private cancelUpload(): void {
    this.webdavManager.pauseUploadQueue();
    this.webdavManager.clearUploadQueue();
    this.isUploading = false;
    this.currentTask = null;
    Logger.info(TAG, '取消上传');
  }

  /**
   * 上传进度显示组件
   */
  @Builder
  UploadProgressView() {
    if (this.isUploading && this.currentTask) {
      Column({ space: 16 }) {
        // 标题行
        Row({ space: 8 }) {
          Text('⏫')
            .fontSize(20)
          Text('上传中')
            .fontSize(16)
            .fontWeight(FontWeight.Medium)
            .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#E5000000')
        }
        .alignSelf(ItemAlign.Start)

        // 当前文件信息卡片
        Column({ space: 10 }) {
          Row({ space: 8 }) {
            Text('🎵')
              .fontSize(18)
            Text(this.currentTask.name)
              .fontSize(14)
              .fontWeight(FontWeight.Medium)
              .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#1F1F1F')
              .layoutWeight(1)
              .maxLines(1)
              .textOverflow({ overflow: TextOverflow.Ellipsis })
          }
          .width('100%')

          // 进度条
          Progress({ value: this.uploadProgress, total: 100, type: ProgressType.Linear })
            .width('100%')
            .color(this.themeColor)
            .backgroundColor(this.isDarkMode ? '#2E3238' : '#E5E5EA')
            .style({ strokeWidth: 6 })

          // 进度信息行
          Row() {
            Text(`${this.uploadProgress}%`)
              .fontSize(15)
              .fontWeight(FontWeight.Bold)
              .fontColor(this.themeColor)

            Blank()

            Text(`${this.uploadSpeed}`)
              .fontSize(13)
              .fontColor(this.isDarkMode ? '#99FFFFFF' : '#8E8E93')
          }
          .width('100%')

          // 已上传数量
          Row({ space: 6 }) {
            Text('✓')
              .fontSize(14)
              .fontColor(this.themeColor)
            Text(`已完成 ${this.uploadedCount}/${this.totalUploadCount}`)
              .fontSize(13)
              .fontColor(this.isDarkMode ? '#99FFFFFF' : '#8E8E93')
          }
        }
        .width('100%')
        .padding(14)
        .backgroundColor(this.isDarkMode ? '#2E3238' : '#F5F7FA')
        .borderRadius(10)

        // 控制按钮
        Row({ space: 10 }) {
          Button({ type: ButtonType.Normal }) {
            Row({ space: 6 }) {
              Text(this.webdavManager.isPauseUpload ? '▶️' : '⏸️')
                .fontSize(16)
              Text(this.webdavManager.isPauseUpload ? '恢复' : '暂停')
                .fontSize(14)
                .fontWeight(FontWeight.Medium)
            }
          }
          .height(44)
          .layoutWeight(1)
          .backgroundColor(this.themeColor)
          .fontColor('#FFFFFF')
          .borderRadius(10)
          .onClick(() => {
            if (this.webdavManager.isPauseUpload) {
              this.resumeUpload();
            } else {
              this.pauseUpload();
            }
          })

          Button({ type: ButtonType.Normal }) {
            Row({ space: 6 }) {
              Text('❌')
                .fontSize(16)
              Text('取消')
                .fontSize(14)
                .fontWeight(FontWeight.Medium)
            }
          }
          .height(44)
          .layoutWeight(1)
          .backgroundColor(this.isDarkMode ? '#D94838' : '#FF3B30')
          .fontColor('#FFFFFF')
          .borderRadius(10)
          .onClick(() => {
            this.cancelUpload();
          })
        }
        .width('100%')
      }
      .width('100%')
      .padding(16)
      .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
      .borderRadius(12)
      .shadow({
        radius: this.isDarkMode ? 8 : 12,
        color: this.isDarkMode ? '#0C000000' : '#19000000',
        offsetX: 0,
        offsetY: 2
      })
      .margin({ bottom: 16 })
    }
  }

  /**
   * 上传队列管理组件（使用LazyDataSource优化性能）
   */
  @Builder
  UploadQueueView() {
    Column({ space: 16 }) {
      // 标题行
      Row({ space: 8 }) {
        Text('📊')
          .fontSize(20)
        Text('任务队列')
          .fontSize(16)
          .fontWeight(FontWeight.Medium)
          .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#E5000000')
      }
      .alignSelf(ItemAlign.Start)

      Tabs({ barPosition: BarPosition.Start }) {
        TabContent() {
          this.QueueList(this.uploadQueueDataSource, 'pending')
        }
        .tabBar(this.TabBarBuilder('⏳', '待上传', this.pendingCount))

        TabContent() {
          this.QueueList(this.finishQueueDataSource, 'finished')
        }
        .tabBar(this.TabBarBuilder('✅', '已完成', this.finishedCount))
      }
      .width('100%')
      .height(300)
      .barMode(BarMode.Fixed)
      .barBackgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
      .animationDuration(300)
    }
    .width('100%')
    .padding(16)
    .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
    .borderRadius(12)
    .shadow({
      radius: this.isDarkMode ? 8 : 12,
      color: this.isDarkMode ? '#0C000000' : '#19000000',
      offsetX: 0,
      offsetY: 2
    })
    .margin({ bottom: 16 })
  }

  /**
   * 自定义Tab标签构建器
   */
  @Builder
  TabBarBuilder(icon: string, title: string, count: number) {
    Row({ space: 6 }) {
      Text(icon)
        .fontSize(16)
      Text(title)
        .fontSize(14)
        .fontWeight(FontWeight.Medium)
      Text(`${count}`)
        .fontSize(12)
        .fontWeight(FontWeight.Medium)
        .fontColor('#FFFFFF')
        .padding({
          left: 6,
          right: 6,
          top: 2,
          bottom: 2
        })
        .backgroundColor(this.themeColor)
        .borderRadius(8)
    }
    .padding({ left: 4, right: 4 })
  }

  /**
   * 队列列表组件（使用LazyForEach优化性能）
   */
  @Builder
  QueueList(dataSource: UploadTaskDataSource, type: string) {
    if (dataSource.totalCount() === 0) {
      Column() {
        Text(type === 'pending' ? '暂无待上传任务' : '暂无已完成任务')
          .fontSize(14)
          .fontColor(this.isDarkMode ? '#66FFFFFF' : '#66000000')
      }
      .width('100%')
      .height('100%')
      .justifyContent(FlexAlign.Center)
    } else {
      List({ space: 8 }) {
        LazyForEach(dataSource, (item: VideoItem, index: number) => {
          ListItem() {
            Row({ space: 12 }) {
              // 文件图标
              Text('🎵')
                .fontSize(20)

              Text(item.name)
                .fontSize(14)
                .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#E5000000')
                .layoutWeight(1)
                .maxLines(1)
                .textOverflow({ overflow: TextOverflow.Ellipsis })

              if (type === 'pending') {
                Button('移除')
                  .fontSize(12)
                  .height(32)
                  .padding({ left: 12, right: 12 })
                  .backgroundColor(this.isDarkMode ? '#D94838' : '#E84026')
                  .fontColor('#FFFFFF')
                  .borderRadius(6)
                  .onClick(() => {
                    // 从队列移除
                    const tasks = this.webdavManager.uploadQueue;
                    if (index < tasks.length) {
                      this.webdavManager.removeFromUploadQueue(tasks[index]);
                    }
                  })
              } else {
                Text('✓')
                  .fontSize(20)
                  .fontColor(this.isDarkMode ? '#5BA854' : '#64BB5C')
              }
            }
            .width('100%')
            .padding(12)
            .backgroundColor(this.isDarkMode ? '#2E3033' : '#F1F3F5')
            .borderRadius(8)
          }
        }, (item: VideoItem, index: number) => `${type}-${index}-${item.name}`)
      }
      .width('100%')
      .height('100%')
      .cachedCount(5) // 缓存5个列表项以提升滚动性能
      .divider({
        strokeWidth: 1,
        color: this.isDarkMode ? '#19FFFFFF' : '#0C000000'
      })
    }
  }

  /**
   * 开始上传按钮组件
   */
  @Builder
  StartUploadButton() {
    Button({ type: ButtonType.Normal }) {
      Row({ space: 10 }) {
        Text('🚀')
          .fontSize(20)
        Text('开始上传')
          .fontSize(16)
          .fontWeight(FontWeight.Bold)
      }
    }
    .width('100%')
    .height(54)
    .backgroundColor(this.themeColor)
    .fontColor('#FFFFFF')
    .borderRadius(12)
    .enabled(!this.isUploading && this.selectedFiles.length > 0 && this.selectedAccount !== null)
    .opacity((!this.isUploading && this.selectedFiles.length > 0 && this.selectedAccount !== null) ? 1.0 : 0.4)
    .shadow({
      radius: 12,
      color: this.themeColor + '50',
      offsetX: 0,
      offsetY: 4
    })
    .onClick(() => {
      this.startUpload();
    })
    .margin({ bottom: 16 })
  }

  /**
   * 远程配置区域组件
   */
  @Builder
  UploadConfigSection() {
    Column({ space: 16 }) {
      // 标题行
      Row({ space: 8 }) {
        Text('📁')
          .fontSize(20)
        Text('远程配置')
          .fontSize(16)
          .fontWeight(FontWeight.Medium)
          .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#E5000000')
      }
      .alignSelf(ItemAlign.Start)

      // 上传路径选择卡片
      Column({ space: 12 }) {
        Row({ space: 8 }) {
          Text('远程目录')
            .fontSize(13)
            .fontWeight(FontWeight.Medium)
            .fontColor(this.isDarkMode ? '#99FFFFFF' : '#66000000')
          Row({ space: 8 }) {
            Text('📂')
              .fontSize(18)

            Text(this.uploadPath || '请选择远程目录')
              .fontSize(15)
              .fontColor(this.uploadPath ?
                (this.isDarkMode ? '#E5FFFFFF' : '#1F1F1F') :
                (this.isDarkMode ? '#66FFFFFF' : '#99000000'))
              .fontWeight(this.uploadPath ? FontWeight.Medium : FontWeight.Regular)
              .maxLines(1)
              .textOverflow({ overflow: TextOverflow.Ellipsis })
          }

          Blank()

          Button('浏览')
            .fontSize(13)
            .height(32)
            .padding({ left: 12, right: 12 })
            .backgroundColor(this.themeColor)
            .fontColor('#FFFFFF')
            .borderRadius(6)
            .enabled(this.selectedAccount !== null)
            .opacity(this.selectedAccount !== null ? 1.0 : 0.4)
            .bindSheet($$this.isShowPathBrowser, this.PathBrowserDialog(), {
              height: '90%',
              dragBar: true,
              showClose: true,
              preferType: SheetType.BOTTOM,
              blurStyle: BlurStyle.Thin,
              title: { title: '选择上传路径' }
            })
            .onClick(() => {
              this.openPathBrowser();
            })
        }
        .width('100%')
      }
      .width('100%')
      .padding(14)
      .backgroundColor(this.isDarkMode ? '#2E3238' : '#F5F7FA')
      .borderRadius(10)
      .border({
        width: 1,
        color: this.uploadPath ?
          (this.isDarkMode ? this.themeColor + '40' : this.themeColor + '30') :
          (this.isDarkMode ? '#19FFFFFF' : '#E5E5EA')
      })

      // 重复文件处理卡片
      Column({ space: 12 }) {
        Text('重复文件处理')
          .fontSize(13)
          .fontWeight(FontWeight.Medium)
          .fontColor(this.isDarkMode ? '#99FFFFFF' : '#66000000')
          .alignSelf(ItemAlign.Start)

        // SegmentButton 选项
        SegmentButton({
          options: this.duplicateOptions,
          selectedIndexes: $selectedDuplicateIndex
        })
          .width('100%')
          .margin({ top: 8 })

      }
      .width('100%')
      .padding(14)
      .backgroundColor(this.isDarkMode ? '#2E3238' : '#F5F7FA')
      .borderRadius(10)
    }
    .width('100%')
    .padding(16)
    .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
    .borderRadius(12)
    .shadow({
      radius: this.isDarkMode ? 8 : 12,
      color: this.isDarkMode ? '#0C000000' : '#19000000',
      offsetX: 0,
      offsetY: 2
    })
    .margin({ bottom: 16 })
  }

  /**
   * 路径浏览器对话框
   */
  @Builder
  PathBrowserDialog() {
    Column() {
      // 当前路径显示
      Row({ space: 12 }) {
        Column({ space: 4 }) {
          Text('当前路径')
            .fontSize(12)
            .fontColor(this.isDarkMode ? '#66FFFFFF' : '#66000000')

          Text(this.currentBrowsePath)
            .fontSize(14)
            .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#E5000000')
            .maxLines(1)
            .textOverflow({ overflow: TextOverflow.Ellipsis })
        }
        .alignItems(HorizontalAlign.Start)
        .layoutWeight(1)

        if (this.currentBrowsePath !== '/') {
          Button('返回上级')
            .fontSize(12)
            .height(36)
            .padding({ left: 12, right: 12 })
            .backgroundColor(this.themeColor)
            .fontColor('#FFFFFF')
            .borderRadius(8)
            .onClick(() => {
              this.goBackBrowseFolder();
            })
        }
      }
      .width('100%')
      .padding(16)
      .backgroundColor(this.isDarkMode ? '#191A1C' : '#F1F3F5')

      // 文件夹列表
      if (this.isLoadingFolders) {
        Column({ space: 12 }) {
          LoadingProgress()
            .width(48)
            .height(48)
            .color(this.themeColor)

          Text('加载中...')
            .fontSize(14)
            .fontColor(this.isDarkMode ? '#99FFFFFF' : '#99000000')
        }
        .width('100%')
        .height(300)
        .justifyContent(FlexAlign.Center)
        .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
      } else if (this.browseFolders.length === 0) {
        Column() {
          Text('📂')
            .fontSize(48)
            .margin({ bottom: 12 })

          Text('当前目录没有子文件夹')
            .fontSize(14)
            .fontColor(this.isDarkMode ? '#66FFFFFF' : '#66000000')
        }
        .width('100%')
        .height(300)
        .justifyContent(FlexAlign.Center)
        .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
      } else {
        List({ space: 8 }) {
          ForEach(this.browseFolders, (folder: FileInfo, index: number) => {
            ListItem() {
              Row({ space: 12 }) {
                Text('📁')
                  .fontSize(24)

                Text(folder.fileName)
                  .fontSize(14)
                  .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#E5000000')
                  .layoutWeight(1)
                  .maxLines(1)
                  .textOverflow({ overflow: TextOverflow.Ellipsis })

                Text('→')
                  .fontSize(18)
                  .fontColor(this.isDarkMode ? '#66FFFFFF' : '#66000000')
              }
              .width('100%')
              .padding(16)
              .backgroundColor(this.isDarkMode ? '#2E3033' : '#F1F3F5')
              .borderRadius(8)
              .onClick(() => {
                this.enterBrowseFolder(folder);
              })
            }
          }, (folder: FileInfo, index: number) => `folder-${index}-${folder.fileName}`)
        }
        .width('100%')
        .layoutWeight(1)
        .padding(16)
        .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
        .divider({
          strokeWidth: 1,
          color: this.isDarkMode ? '#19FFFFFF' : '#0C000000'
        })
      }

      // 底部按钮
      Row({ space: 12 }) {
        Button('取消')
          .fontSize(14)
          .height(48)
          .layoutWeight(1)
          .backgroundColor(this.isDarkMode ? '#2E3033' : '#E5E5EA')
          .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#E5000000')
          .borderRadius(8)
          .onClick(() => {
            this.closePathBrowser();
          })

        Button('选择此路径')
          .fontSize(14)
          .height(48)
          .layoutWeight(1)
          .backgroundColor(this.themeColor)
          .fontColor('#FFFFFF')
          .borderRadius(8)
          .onClick(() => {
            this.confirmPathSelection();
          })
      }
      .width('100%')
      .padding({ left:16,right:16 })
      .margin({bottom:25})
    }
  }

  /**
   * 账户选择区域组件
   */
  @Builder
  AccountSelectorSection() {
    Column({ space: 16 }) {
      // 标题行
      Row({ space: 8 }) {
        Text('☁️')
          .fontSize(20)
        Text('选择账户')
          .fontSize(16)
          .fontWeight(FontWeight.Medium)
          .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#E5000000')
      }
      .alignSelf(ItemAlign.Start)

      if (this.accounts.length === 0) {
        Column({ space: 12 }) {
          Text('📦')
            .fontSize(48)

          Text('暂无账户')
            .fontSize(16)
            .fontColor(this.isDarkMode ? '#99FFFFFF' : '#99000000')

          Text('请先添加账户')
            .fontSize(14)
            .fontColor(this.isDarkMode ? '#66FFFFFF' : '#66000000')
        }
        .width('100%')
        .padding(32)
        .justifyContent(FlexAlign.Center)
      } else {
        List({ space: 8 }) {
          ForEach(this.accounts, (account: WebDavAccount, index: number) => {
            ListItem() {
              Row({ space: 12 }) {
                // 账户图标
                Text('☁️')
                  .fontSize(24)

                Column({ space: 3 }) {
                  Text(account.name)
                    .fontSize(14)
                    .fontWeight(FontWeight.Medium)
                    .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#1F1F1F')

                  Text(`${account.host}:${account.port}`)
                    .fontSize(11)
                    .fontColor(this.isDarkMode ? '#66FFFFFF' : '#8E8E93')
                }
                .alignItems(HorizontalAlign.Start)
                .layoutWeight(1)

                if (this.selectedAccount && this.selectedAccount.id === account.id) {
                  Text('✓')
                    .fontSize(20)
                    .fontColor(this.themeColor)
                }
              }
              .width('100%')
              .padding(8)
              .backgroundColor(this.selectedAccount && this.selectedAccount.id === account.id
                ? (this.isDarkMode ? '#2E3238' : '#FFFFFF')
                : (this.isDarkMode ? '#2E3238' : '#F5F7FA'))
              .borderRadius(10)
              .border({
                width: this.selectedAccount && this.selectedAccount.id === account.id ? 2 : 1,
                color: this.selectedAccount && this.selectedAccount.id === account.id
                  ? this.themeColor
                  : (this.isDarkMode ? '#19FFFFFF' : '#E5E5EA')
              })
              .onClick(() => {
                this.selectUploadAccount(account);
              })
            }
          }, (account: WebDavAccount) => `account-${account.id}`)
        }
        .width('100%')
      }
    }
    .width('100%')
    .padding(10)
    .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
    .borderRadius(12)
    .shadow({
      radius: this.isDarkMode ? 8 : 12,
      color: this.isDarkMode ? '#0C000000' : '#19000000',
      offsetX: 0,
      offsetY: 2
    })
    .margin({ bottom: 16 })
  }

  /**
   * 文件选择区域组件
   */
  @Builder
  FilePickerSection() {
    Column({ space: 16 }) {
      // 标题行
      Row({ space: 8 }) {
        Text('🎵')
          .fontSize(20)
        Text('选择文件')
          .fontSize(16)
          .fontWeight(FontWeight.Medium)
          .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#E5000000')
      }
      .alignSelf(ItemAlign.Start)

      // 按钮组
      Row({ space: 10 }) {
        Button({ type: ButtonType.Normal }) {
          Row({ space: 6 }) {
            Text('📁')
              .fontSize(16)
            Text('从文件管理器')
              .fontSize(14)
              .fontWeight(FontWeight.Medium)
          }
        }
        .layoutWeight(1)
        .height(48)
        .backgroundColor(this.themeColor)
        .fontColor('#FFFFFF')
        .borderRadius(10)
        .shadow({
          radius: 8,
          color: this.themeColor + '40',
          offsetX: 0,
          offsetY: 3
        })
        .onClick(() => {
          this.openFilePicker();
        })

        Button({ type: ButtonType.Normal }) {
          Row({ space: 6 }) {
            Text('🎵')
              .fontSize(16)
            Text('从本地目录')
              .fontSize(14)
              .fontWeight(FontWeight.Medium)
          }
        }
        .layoutWeight(1)
        .height(48)
        .backgroundColor(this.themeColor)
        .fontColor('#FFFFFF')
        .borderRadius(10)
        .shadow({
          radius: 8,
          color: this.themeColor + '40',
          offsetX: 0,
          offsetY: 3
        })
        .onClick(() => {
          this.openFileBrowser();
        })

      }
      .width('100%')

      if (this.selectedFiles.length > 0) {
        Row({ space: 10 }) {
          Text('✓')
            .fontSize(18)
            .fontColor(this.themeColor)

          Column({ space: 2 }) {
            Text(`已选择 ${this.selectedFiles.length} 项`)
              .fontSize(14)
              .fontWeight(FontWeight.Medium)
              .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#1F1F1F')

            Row({ space: 8 }) {
              if (this.selectedFileTypes.filter(t => t === 'file').length > 0) {
                Text(`${this.selectedFileTypes.filter(t => t === 'file').length} 个文件`)
                  .fontSize(12)
                  .fontColor(this.isDarkMode ? '#66FFFFFF' : '#8E8E93')
              }
              if (this.selectedFileTypes.filter(t => t === 'folder').length > 0) {
                Text(`${this.selectedFileTypes.filter(t => t === 'folder').length} 个文件夹`)
                  .fontSize(12)
                  .fontColor(this.isDarkMode ? '#66FFFFFF' : '#8E8E93')
              }
            }
          }
          .alignItems(HorizontalAlign.Start)
        }
        .width('100%')
        .padding(12)
        .backgroundColor(this.isDarkMode ? '#2E3238' : '#F5F7FA')
        .borderRadius(8)
        .border({
          width: 1,
          color: this.isDarkMode ? this.themeColor + '40' : this.themeColor + '30'
        })
      }
    }
    .width('100%')
    .padding(16)
    .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
    .borderRadius(12)
    .shadow({
      radius: this.isDarkMode ? 8 : 12,
      color: this.isDarkMode ? '#0C000000' : '#19000000',
      offsetX: 0,
      offsetY: 2
    })
    .margin({ bottom: 16 })
  }

  /**
   * 已选文件列表组件
   */
  @Builder
  SelectedFilesList() {
    Column({ space: 16 }) {
      // 标题行
      Row({ space: 8 }) {
        Text('📋')
          .fontSize(20)
        Text('已选文件')
          .fontSize(16)
          .fontWeight(FontWeight.Medium)
          .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#E5000000')

        Blank()

        Text(`${this.selectedFiles.length}`)
          .fontSize(13)
          .fontWeight(FontWeight.Medium)
          .fontColor('#FFFFFF')
          .padding({
            left: 8,
            right: 8,
            top: 4,
            bottom: 4
          })
          .backgroundColor(this.themeColor)
          .borderRadius(10)
      }
      .width('100%')
      .alignSelf(ItemAlign.Start)

      List({ space: 8 }) {
        ForEach(this.selectedFileNames, (fileName: string, index: number) => {
          ListItem() {
            Row({ space: 12 }) {
              // 文件/文件夹图标
              Text(this.selectedFileTypes[index] === 'folder' ? '📁' : '🎵')
                .fontSize(20)

              Column({ space: 2 }) {
                Text(fileName)
                  .fontSize(14)
                  .fontWeight(FontWeight.Medium)
                  .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#1F1F1F')
                  .maxLines(1)
                  .textOverflow({ overflow: TextOverflow.Ellipsis })

                if (this.selectedFileTypes[index] === 'folder') {
                  Text('文件夹')
                    .fontSize(12)
                    .fontColor(this.isDarkMode ? '#66FFFFFF' : '#8E8E93')
                }
              }
              .alignItems(HorizontalAlign.Start)
              .layoutWeight(1)

              Button({ type: ButtonType.Normal }) {
                Text('移除')
                  .fontSize(12)
                  .fontWeight(FontWeight.Medium)
              }
              .height(32)
              .padding({ left: 12, right: 12 })
              .backgroundColor(this.isDarkMode ? '#D94838' : '#FF3B30')
              .fontColor('#FFFFFF')
              .borderRadius(6)
              .onClick(() => {
                this.removeSelectedFile(index);
              })
            }
            .width('100%')
            .padding(12)
            .backgroundColor(this.isDarkMode ? '#2E3238' : '#F5F7FA')
            .borderRadius(8)
            .border({
              width: 1,
              color: this.isDarkMode ? '#19FFFFFF' : '#E5E5EA'
            })
          }
        }, (fileName: string, index: number) => `${index}-${fileName}`)
      }
      .width('100%')
      .constraintSize({ maxHeight: 300 })
    }
    .width('100%')
    .padding(16)
    .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
    .borderRadius(12)
    .shadow({
      radius: this.isDarkMode ? 8 : 12,
      color: this.isDarkMode ? '#0C000000' : '#19000000',
      offsetX: 0,
      offsetY: 2
    })
    .margin({ bottom: 16 })
  }

  build() {
    Column() {
      // 标题栏
      this.topTitleBar()

      // 页面内容区域
      Scroll() {
        Column({ space: 0 }) {
          // 账户选择区域
          // this.AccountSelectorSection()

          // 上传配置区域
          this.UploadConfigSection()

          // 文件选择区域
          this.FilePickerSection()

          // 已选文件列表
          if (this.selectedFiles.length > 0) {
            this.SelectedFilesList()
          }

          // 开始上传按钮
          if (!this.isUploading) {
            this.StartUploadButton()
          }

          // 上传进度显示
          this.UploadProgressView()

          // 上传队列管理
          if (this.uploadQueue.length > 0 || this.finishQueue.length > 0) {
            this.UploadQueueView()
          }
        }
        .width('100%')
        .constraintSize({ minHeight: '100%' })
      }
      .layoutWeight(1)
      .width('100%')
      .padding(16)
      .scrollBar(BarState.Auto)

      // 底部安全区
      Row()
        .height(this.bottomSafeHeight)
        .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
    }
    .width('100%')
    .height('100%')
    .backgroundColor(this.isDarkMode ? '#191A1C' : '#F1F3F5')
    .bindSheet($$this.isShowFileBrowser, this.FileBrowserDialog(), {
      height: '95%',
      dragBar: true,
      showClose: true,
      preferType: SheetType.BOTTOM,
      blurStyle: BlurStyle.Thin,
      title: { title: '浏览选择文件' }
    })
  }

  @Builder
  topTitleBar() {
    Column() {
      Row({ space: 15 }) {

        //左侧滑动按钮
        Button({ type: ButtonType.Circle, stateEffect: true }) {
          SymbolGlyph($r('sys.symbol.chevron_left'))
            .attributeModifier(new SymbolGlyphFancyModifier(25, '', ''))
        }
        .attributeModifier(new ButtonFancyModifier(40, 40))
        .clickEffect({ level: ClickEffectLevel.MIDDLE, scale: 0.6 })
        .animation({ duration: 300, curve: Curve.Ease })
        .onClick(() => {
          this.getUIContext().getRouter().back();
        })
        .attributeModifier(new ShadowModifier())
        .zIndex(0)

        Text('上传音乐')
          .margin({ left: 3, right: 10 })
          .fontColor($r('app.color.text_color'))
          .fontSize(19)
          .maxLines(1)
          .textOverflow({ overflow: TextOverflow.MARQUEE })//超长滚动
          .layoutWeight(1)
          .clickEffect({ level: ClickEffectLevel.MIDDLE, scale: 0.6 })


      }
    }
    .padding({
      top: this.topSafeHeight + 10,
      left: 10,
      right: 10,
      bottom: 12
    })
    .width('100%')
  }

  /**
   * 文件浏览器对话框
   */
  @Builder
  FileBrowserDialog() {
    Column() {
      // 当前路径和返回按钮
      Row({ space: 12 }) {
        Column({ space: 4 }) {
          Text('当前目录')
            .fontSize(12)
            .fontColor(this.isDarkMode ? '#66FFFFFF' : '#8E8E93')

          Text(this.fileBrowserPath)
            .fontSize(13)
            .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#1F1F1F')
            .maxLines(1)
            .textOverflow({ overflow: TextOverflow.Ellipsis })
        }
        .alignItems(HorizontalAlign.Start)
        .layoutWeight(1)

        if (this.fileBrowserPath.lastIndexOf('/') > 0) {
          Button('返回上级')
            .fontSize(12)
            .height(36)
            .padding({ left: 12, right: 12 })
            .backgroundColor(this.themeColor)
            .fontColor('#FFFFFF')
            .borderRadius(8)
            .onClick(() => {
              this.goBackDirectory();
            })
        }
      }
      .width('100%')
      .padding(16)
      .backgroundColor(this.isDarkMode ? '#191A1C' : '#F1F3F5')

      // 文件列表
      if (this.isLoadingFiles) {
        Column({ space: 12 }) {
          LoadingProgress()
            .width(48)
            .height(48)
            .color(this.themeColor)

          Text('加载中...')
            .fontSize(14)
            .fontColor(this.isDarkMode ? '#99FFFFFF' : '#8E8E93')
        }
        .width('100%')
        .height(400)
        .justifyContent(FlexAlign.Center)
        .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
      } else if (this.browserFiles.length === 0) {
        Column({ space: 12 }) {
          Text('📂')
            .fontSize(48)

          Text('当前目录为空')
            .fontSize(14)
            .fontColor(this.isDarkMode ? '#66FFFFFF' : '#8E8E93')
        }
        .width('100%')
        .height(400)
        .justifyContent(FlexAlign.Center)
        .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
      } else {
        List({ space: 8 }) {
          ForEach(this.browserFiles, (item: LocalFileItem, index: number) => {
            ListItem() {
              Row({ space: 12 }) {
                // 复选框
                Checkbox()
                  .select(this.selectedBrowserItems.has(item.path))
                  .selectedColor(this.themeColor)
                  .onChange((checked: boolean) => {
                    this.toggleItemSelection(item);
                  })

                // 图标
                Text(item.isDirectory ? '📁' : '🎵')
                  .fontSize(24)

                // 文件名
                Column({ space: 2 }) {
                  Text(item.name)
                    .fontSize(14)
                    .fontWeight(FontWeight.Medium)
                    .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#1F1F1F')
                    .maxLines(1)
                    .textOverflow({ overflow: TextOverflow.Ellipsis })

                  if (item.isDirectory) {
                    Text('文件夹')
                      .fontSize(12)
                      .fontColor(this.isDarkMode ? '#66FFFFFF' : '#8E8E93')
                  }
                }
                .alignItems(HorizontalAlign.Start)
                .layoutWeight(1)

                // 进入按钮（仅文件夹）
                if (item.isDirectory) {
                  Text('→')
                    .fontSize(20)
                    .fontColor(this.isDarkMode ? '#66FFFFFF' : '#8E8E93')
                    .onClick(() => {
                      this.enterDirectory(item);
                    })
                }
              }
              .width('100%')
              .padding(12)
              .backgroundColor(this.selectedBrowserItems.has(item.path) ?
                (this.isDarkMode ? '#2E3238' : '#FFFFFF') :
                (this.isDarkMode ? '#2E3238' : '#F5F7FA'))
              .borderRadius(8)
              .border({
                width: this.selectedBrowserItems.has(item.path) ? 2 : 1,
                color: this.selectedBrowserItems.has(item.path) ?
                  this.themeColor :
                  (this.isDarkMode ? '#19FFFFFF' : '#E5E5EA')
              })
              .onClick(() => {
                if (!item.isDirectory) {
                  this.toggleItemSelection(item);
                }
              })
            }
          }, (item: LocalFileItem, index: number) => `${index}-${item.path}`)
        }
        .width('100%')
        .layoutWeight(1)
        .padding(16)
        .backgroundColor(this.isDarkMode ? '#23272E' : '#FFFFFF')
      }

      // 底部按钮
      Row({ space: 12 }) {
        Text(`已选择 ${this.selectedBrowserItems.size} 项`)
          .fontSize(14)
          .fontColor(this.isDarkMode ? '#99FFFFFF' : '#8E8E93')
          .layoutWeight(1)

        Button('取消')
          .fontSize(14)
          .height(48)
          .padding({ left: 30, right: 30 })
          .backgroundColor(this.isDarkMode ? '#2E3238' : '#E5E5EA')
          .fontColor(this.isDarkMode ? '#E5FFFFFF' : '#1F1F1F')
          .borderRadius(8)
          .onClick(() => {
            this.closeFileBrowser();
          })

        Button('确定')
          .fontSize(14)
          .height(48)
          .padding({ left: 30, right: 30 })
          .backgroundColor(this.themeColor)
          .fontColor('#FFFFFF')
          .borderRadius(8)
          .enabled(this.selectedBrowserItems.size > 0)
          .opacity(this.selectedBrowserItems.size > 0 ? 1.0 : 0.4)
          .onClick(() => {
            this.confirmFileSelection();
          })
      }
      .width('100%')
      .padding({ left:16,right:16 })
      .margin({bottom:12})
    }
  }
}