二次开发源码提交
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import 'dart:io';
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/// 上传状态
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enum UploadStatus {
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waiting, // 等待中
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uploading, // 上传中
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completed, // 已完成
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paused, // 已暂停
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failed, // 失败
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cancelled, // 已取消
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}
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/// 上传会话模型（从 API 返回的上传会话信息）
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class UploadSessionModel {
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final String sessionId;
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final String? uploadId;
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final int chunkSize;
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final int expires;
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final List<String>? uploadUrls;
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final String? credential;
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final String? completeUrl;
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final StoragePolicyModel storagePolicy;
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final String? mimeType;
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final String? uploadPolicy;
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final String? callbackSecret;
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UploadSessionModel({
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required this.sessionId,
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this.uploadId,
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required this.chunkSize,
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required this.expires,
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this.uploadUrls,
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this.credential,
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this.completeUrl,
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required this.storagePolicy,
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this.mimeType,
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this.uploadPolicy,
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this.callbackSecret,
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});
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factory UploadSessionModel.fromJson(Map<String, dynamic> json) {
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return UploadSessionModel(
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sessionId: json['session_id'] as String,
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uploadId: json['upload_id'] as String?,
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chunkSize: json['chunk_size'] as int,
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expires: json['expires'] as int,
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uploadUrls: json['upload_urls'] != null
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? (json['upload_urls'] as List).map((e) => e as String).toList()
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: null,
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credential: json['credential'] as String?,
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completeUrl: json['completeURL'] as String?,
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storagePolicy: StoragePolicyModel.fromJson(json['storage_policy'] as Map<String, dynamic>),
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mimeType: json['mime_type'] as String?,
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uploadPolicy: json['upload_policy'] as String?,
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callbackSecret: json['callback_secret'] as String?,
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);
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}
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/// 是否支持分片上传
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bool get isMultipartEnabled => chunkSize > 0;
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/// 是否使用中继上传（上传到 Cloudreve 服务器）
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bool get isRelayUpload => storagePolicy.relay == true || storagePolicy.type == 'local';
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}
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/// 存储策略模型
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class StoragePolicyModel {
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final String id;
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final String name;
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final String type;
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final int maxSize;
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final bool? relay;
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StoragePolicyModel({
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required this.id,
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required this.name,
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required this.type,
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required this.maxSize,
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this.relay,
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});
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factory StoragePolicyModel.fromJson(Map<String, dynamic> json) {
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return StoragePolicyModel(
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id: json['id'] as String,
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name: json['name'] as String,
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type: json['type'] as String,
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maxSize: json['max_size'] as int,
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relay: json['relay'] as bool?,
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);
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}
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}
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/// 上传任务模型
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class UploadTaskModel {
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final String id;
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final File file;
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final String fileName;
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final int fileSize;
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final String targetPath; // 目标路径，例如 cloudreve://my/subfolder
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final DateTime createdAt;
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DateTime? completedAt;
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final UploadStatus status;
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final int uploadedBytes;
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final double progress;
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final int uploadedChunks; // 已上传的分片数量
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final int totalChunks; // 总分片数量
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final String? errorMessage;
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final UploadSessionModel? session; // 上传会话信息
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final int speed; // 上传速度，字节/秒
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UploadTaskModel({
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required this.id,
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required this.file,
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required this.fileName,
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required this.fileSize,
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required this.targetPath,
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DateTime? createdAt,
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this.completedAt,
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UploadStatus? status,
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this.uploadedBytes = 0,
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this.progress = 0,
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this.uploadedChunks = 0,
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this.totalChunks = 1,
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this.errorMessage,
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this.session,
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this.speed = 0,
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}) : createdAt = createdAt ?? DateTime.now(),
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status = status ?? UploadStatus.waiting;
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/// 计算总分片数
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int calculateTotalChunks(int chunkSize) {
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if (chunkSize <= 0) return 1;
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return (fileSize / chunkSize).ceil();
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}
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/// 获取状态文本
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String get statusText {
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switch (status) {
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case UploadStatus.waiting:
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return '等待中';
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case UploadStatus.uploading:
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return '上传中...';
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case UploadStatus.completed:
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return '上传完成';
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case UploadStatus.paused:
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return '已暂停';
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case UploadStatus.failed:
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return '上传失败';
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case UploadStatus.cancelled:
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return '已取消';
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}
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}
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/// 获取进度文本
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String get progressText {
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if (status == UploadStatus.completed) {
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return '100%';
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}
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return '${(progress * 100).toStringAsFixed(1)}%';
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}
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/// 获取可读的文件大小
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String get readableFileSize {
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if (fileSize < 1024) {
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return '$fileSize B';
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} else if (fileSize < 1024 * 1024) {
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return '${(fileSize / 1024).toStringAsFixed(1)} KB';
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} else if (fileSize < 1024 * 1024 * 1024) {
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return '${(fileSize / (1024 * 1024)).toStringAsFixed(1)} MB';
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} else {
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return '${(fileSize / (1024 * 1024 * 1024)).toStringAsFixed(1)} GB';
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}
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}
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/// 获取可读的上传速度
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String get speedText {
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if (speed <= 0) return '';
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if (speed < 1024) return '$speed B/s';
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if (speed < 1024 * 1024) return '${(speed / 1024).toStringAsFixed(1)} KB/s';
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return '${(speed / (1024 * 1024)).toStringAsFixed(1)} MB/s';
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}
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/// 克隆任务
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UploadTaskModel copyWith({
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UploadStatus? status,
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int? uploadedBytes,
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double? progress,
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int? uploadedChunks,
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int? totalChunks,
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String? errorMessage,
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UploadSessionModel? session,
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DateTime? completedAt,
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int? speed,
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}) {
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return UploadTaskModel(
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id: id,
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file: file,
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fileName: fileName,
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fileSize: fileSize,
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targetPath: targetPath,
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createdAt: createdAt,
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completedAt: completedAt ?? this.completedAt,
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status: status ?? this.status,
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uploadedBytes: uploadedBytes ?? this.uploadedBytes,
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progress: progress ?? this.progress,
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uploadedChunks: uploadedChunks ?? this.uploadedChunks,
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totalChunks: totalChunks ?? this.totalChunks,
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errorMessage: errorMessage ?? this.errorMessage,
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session: session ?? this.session,
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speed: speed ?? this.speed,
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);
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}
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/// 转换为 JSON（用于持久化）
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Map<String, dynamic> toJson() {
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return {
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'id': id,
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'file_path': file.path,
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'file_name': fileName,
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'file_size': fileSize,
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'target_path': targetPath,
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'created_at': createdAt.toIso8601String(),
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'completed_at': completedAt?.toIso8601String(),
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'status': status.index,
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'uploaded_bytes': uploadedBytes,
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'progress': progress,
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'uploaded_chunks': uploadedChunks,
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'total_chunks': totalChunks,
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'error_message': errorMessage,
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'speed': speed,
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};
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}
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/// 从 JSON 创建（用于持久化恢复）
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factory UploadTaskModel.fromJson(Map<String, dynamic> json) {
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return UploadTaskModel(
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id: json['id'] as String,
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file: File(json['file_path'] as String),
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fileName: json['file_name'] as String,
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fileSize: json['file_size'] as int,
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targetPath: json['target_path'] as String,
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createdAt: DateTime.parse(json['created_at'] as String),
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completedAt: json['completed_at'] != null
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? DateTime.parse(json['completed_at'] as String)
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: null,
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status: UploadStatus.values[json['status'] as int],
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uploadedBytes: json['uploaded_bytes'] as int,
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progress: json['progress'] as double,
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uploadedChunks: json['uploaded_chunks'] as int,
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totalChunks: json['total_chunks'] as int,
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errorMessage: json['error_message'] as String?,
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speed: json['speed'] as int? ?? 0,
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);
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}
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}
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