二次开发源码提交
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import 'dart:async';
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import 'package:flutter/foundation.dart';
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import '../../data/models/file_model.dart';
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import '../../services/file_service.dart';
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import '../../services/thumbnail_service.dart';
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import '../../core/utils/app_logger.dart';
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import '../../core/utils/file_utils.dart';
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/// 文件视图类型
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enum FileViewType { list, grid, gallery }
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/// 刷新结果
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class RefreshResult {
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final int added;
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final int removed;
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final int updated;
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const RefreshResult({required this.added, required this.removed, required this.updated});
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bool get isUnchanged => added == 0 && removed == 0 && updated == 0;
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}
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/// 文件管理Provider
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class FileManagerProvider extends ChangeNotifier {
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String _currentPath = '/';
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List<FileModel> _files = [];
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List<String> _selectedFiles = [];
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FileViewType _viewType = FileViewType.list;
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bool _isLoading = false;
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bool _hasMore = true;
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String? _errorMessage;
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String? _contextHint;
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String? _highlightPath;
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Timer? _highlightTimer;
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String get currentPath => _currentPath;
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List<FileModel> get files => _files;
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List<String> get selectedFiles => _selectedFiles;
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FileViewType get viewType => _viewType;
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bool get isLoading => _isLoading;
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bool get hasMore => _hasMore;
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String? get errorMessage => _errorMessage;
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String? get contextHint => _contextHint;
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bool get hasSelection => _selectedFiles.isNotEmpty;
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String? get highlightPath => _highlightPath;
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/// 加载文件列表
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Future<void> loadFiles({bool refresh = false, Duration timeout = const Duration(seconds: 5)}) async {
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if (refresh) {
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_selectedFiles.clear();
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}
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setState(() {
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_isLoading = true;
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_errorMessage = null;
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});
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try {
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final response = await FileService().listFiles(
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uri: _currentPath,
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pageSize: 50,
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).timeout(timeout);
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final List<dynamic> filesData = response['files'] as List<dynamic>? ?? [];
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final pagination = response['pagination'] as Map<String, dynamic>? ?? {};
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AppLogger.d("获取files列表: $filesData");
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setState(() {
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_files = filesData
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.map((f) => FileModel.fromJson(f as Map<String, dynamic>))
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.toList();
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_hasMore = pagination['next_token'] != null;
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_contextHint = response['context_hint'] as String?;
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});
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} on TimeoutException {
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setState(() {
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_errorMessage = '加载超时，请检查网络后重试';
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_hasMore = false;
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});
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} catch (e) {
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setState(() {
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_errorMessage = e.toString();
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_hasMore = false;
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});
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} finally {
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setState(() {
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_isLoading = false;
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});
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}
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}
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/// 进入文件夹
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Future<void> enterFolder(String path) async {
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_currentPath = path;
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_selectedFiles.clear();
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_highlightPath = null;
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_highlightTimer?.cancel();
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ThumbnailService.instance.clearAll();
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await loadFiles();
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}
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/// 返回上级
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Future<void> goBack() async {
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if (_currentPath == '/' || _currentPath.isEmpty) return;
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final parts = _currentPath.split('/');
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if (parts.length > 1) {
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parts.removeLast();
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_currentPath = parts.join('/');
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} else {
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_currentPath = '/';
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}
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_selectedFiles.clear();
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_highlightPath = null;
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_highlightTimer?.cancel();
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ThumbnailService.instance.clearAll();
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notifyListeners();
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await loadFiles();
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}
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/// 选择/取消选择文件
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void toggleSelection(String path) {
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if (_selectedFiles.contains(path)) {
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_selectedFiles.remove(path);
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} else {
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_selectedFiles.add(path);
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}
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notifyListeners();
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}
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/// 选择所有
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void selectAll() {
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_selectedFiles = _files.map((f) => f.path).toList();
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notifyListeners();
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}
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/// 清除选择
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void clearSelection() {
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_selectedFiles.clear();
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notifyListeners();
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}
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/// 切换视图类型
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void setViewType(FileViewType type) {
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_viewType = type;
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notifyListeners();
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}
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/// 设置错误信息
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void setErrorMessage(String? message) {
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_errorMessage = message;
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notifyListeners();
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}
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/// 设置状态
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void setState(VoidCallback fn) {
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fn();
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notifyListeners();
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}
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/// 删除选中的文件
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Future<String?> deleteSelectedFiles() async {
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if (_selectedFiles.isEmpty) return null;
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try {
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AppLogger.d("删除文件: ${_selectedFiles.join(', ')}");
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await FileService().deleteFiles(uris: _selectedFiles);
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setState(() {
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_files.removeWhere((file) => _selectedFiles.contains(file.path));
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});
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clearSelection();
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return null;
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} catch (e) {
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final error = e.toString();
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setErrorMessage(error);
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return error;
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}
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}
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/// 创建文件夹
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Future<String?> createFolder(String name) async {
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try {
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String uri;
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if (_currentPath == '/' || _currentPath.isEmpty) {
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uri = '/$name';
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} else {
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uri = '$_currentPath/$name';
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}
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final response = await FileService().createFile(
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uri: uri,
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type: 'folder',
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errOnConflict: true,
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);
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final newFolder = FileModel.fromJson(response);
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setState(() {
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_files.insert(0, newFolder);
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});
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return null;
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} catch (e) {
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final error = e.toString();
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setErrorMessage(error);
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return error;
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}
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}
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/// 删除单个文件（增量移除）
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Future<String?> deleteFile(String path) async {
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try {
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await FileService().deleteFiles(uris: [path]);
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setState(() {
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_files.removeWhere((file) => file.path == path);
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_selectedFiles.remove(path);
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});
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return null;
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} catch (e) {
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final error = e.toString();
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setErrorMessage(error);
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return error;
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}
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}
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/// 移动文件（增量更新）
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Future<String?> moveFiles(List<String> uris, String destination, {bool copy = false}) async {
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try {
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await FileService().moveFiles(uris: uris, dst: destination);
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clearSelection();
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if (!copy) {
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// 移动：文件离开当前目录，直接从列表移除
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setState(() {
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_files.removeWhere((file) => uris.contains(file.path));
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});
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} else {
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// 复制：仅当目标是当前目录时需要刷新
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final normalizedDst = FileUtils.toCloudreveUri(destination);
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final normalizedCur = FileUtils.toCloudreveUri(_currentPath);
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if (normalizedDst == normalizedCur) {
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await loadFiles();
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}
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}
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return null;
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} catch (e) {
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final error = e.toString();
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setErrorMessage(error);
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return error;
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}
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}
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/// 重命名文件（原地更新，不刷新列表）
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Future<String?> renameFile(String path, String newName) async {
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try {
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final response = await FileService().renameFile(uri: path, newName: newName);
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if (response.isEmpty) {
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await loadFiles();
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return null;
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}
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final updatedFile = FileModel.fromJson(response);
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final index = _files.indexWhere((f) => f.path == path);
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if (index != -1) {
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setState(() {
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_files[index] = updatedFile;
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});
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}
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return null;
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} catch (e) {
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final error = e.toString();
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setErrorMessage(error);
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return error;
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}
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}
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/// 通过 URI 获取文件信息并添加到列表（用于上传完成后）
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Future<void> addFileByUri(String fileUri) async {
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try {
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final response = await FileService().getFileInfo(uri: fileUri);
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final newFile = FileModel.fromJson(response);
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final exists = _files.any((f) => f.id == newFile.id);
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if (!exists) {
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setState(() {
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_files.insert(0, newFile);
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});
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}
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} catch (e) {
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AppLogger.d('获取上传文件信息失败: $e');
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}
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}
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/// 高亮指定文件路径（3 秒后自动清除）
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void setHighlightPath(String? path) {
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_highlightTimer?.cancel();
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_highlightPath = path;
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notifyListeners();
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if (path != null) {
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_highlightTimer = Timer(const Duration(seconds: 3), () {
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_highlightPath = null;
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notifyListeners();
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});
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}
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}
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/// 导航到指定文件夹并高亮目标文件
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Future<void> navigateAndHighlight(String folderPath, String filePath) async {
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_currentPath = folderPath;
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_selectedFiles.clear();
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_highlightPath = null;
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_highlightTimer?.cancel();
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await loadFiles();
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setHighlightPath(filePath);
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}
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/// 清空文件列表
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void clearFiles() {
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setState(() {
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_files = [];
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_selectedFiles = [];
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_currentPath = '/';
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_errorMessage = null;
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});
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}
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/// 智能刷新 - 只更新差异部分
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Future<RefreshResult> refreshFiles({Duration timeout = const Duration(seconds: 5)}) async {
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setState(() {
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_isLoading = true;
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_errorMessage = null;
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});
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try {
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final response = await FileService().listFiles(
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uri: _currentPath,
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pageSize: 50,
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).timeout(timeout);
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final List<dynamic> filesData = response['files'] as List<dynamic>? ?? [];
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final newFiles = filesData
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.map((f) => FileModel.fromJson(f as Map<String, dynamic>))
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.toList();
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final currentMap = <String, FileModel>{};
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for (final file in _files) {
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currentMap[file.path] = file;
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}
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final newMap = <String, FileModel>{};
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for (final file in newFiles) {
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newMap[file.path] = file;
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}
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int added = 0;
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int removed = 0;
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int updated = 0;
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final updatedFiles = <FileModel>[];
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for (final file in newFiles) {
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final existingFile = currentMap[file.path];
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if (existingFile != null) {
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if (existingFile.updatedAt != file.updatedAt ||
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existingFile.size != file.size) {
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updatedFiles.add(file);
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updated++;
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} else {
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updatedFiles.add(existingFile);
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}
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} else {
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updatedFiles.add(file);
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added++;
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}
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}
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for (final file in _files) {
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if (!newMap.containsKey(file.path)) {
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removed++;
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}
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}
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setState(() {
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_files = updatedFiles;
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_hasMore = response['pagination']?['next_token'] != null;
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_contextHint = response['context_hint'] as String?;
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});
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return RefreshResult(added: added, removed: removed, updated: updated);
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} on TimeoutException {
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setState(() {
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_errorMessage = '加载超时，请检查网络后重试';
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});
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return const RefreshResult(added: 0, removed: 0, updated: 0);
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} catch (e) {
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setState(() {
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_errorMessage = e.toString();
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});
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return const RefreshResult(added: 0, removed: 0, updated: 0);
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} finally {
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setState(() {
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_isLoading = false;
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});
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}
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}
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@override
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void dispose() {
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_highlightTimer?.cancel();
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super.dispose();
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}
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}
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