384 lines
13 KiB
Dart
384 lines
13 KiB
Dart
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import 'dart:convert';
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import 'dart:io';
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import 'package:crypto/crypto.dart';
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import 'package:dio/dio.dart';
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import 'package:file_picker/file_picker.dart';
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import 'package:image_picker/image_picker.dart';
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import 'api_client.dart';
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import 'cos/cos_client.dart';
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/// 公司介绍（小类/详情）图片与视频上传服务。
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///
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/// 对齐 Web 端 `company-intro-subcategory-form.vue` 使用的上传通道：
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/// 1. 计算文件 MD5；
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/// 2. `GET /theme/resource/check-md5` 判断是否已存在（秒传，跳过 COS）；
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/// 3. `GET /theme/upload/credential` 获取腾讯云 STS 临时凭证（含 bucket/region/key）；
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/// 4. 用 STS 临时密钥直传 COS（putObject，原生签名 q-sign-algorithm=sha1）；
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/// 5. `POST /theme/resource/register` 注册 tv_resource；
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/// 6. 解析访问 URL（`theme/` 走 ipscdn CDN）返回。
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///
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/// 复用 [ApiClient.instance.dio]，自动携带 Bearer 令牌、解包 `{code,msg,data}` 信封。
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class UploadService {
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UploadService({Dio? dio}) : _dio = dio ?? ApiClient.instance.dio;
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final Dio _dio;
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/// 主题上传资源 CDN 根地址（与 Web 端 themeCdnBase 一致）。
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static const String _themeCdnBase = 'https://ipscdn.ainetv.cn';
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/// 上传单张图片/视频，返回可访问的 CDN URL。
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///
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/// [mediaType] 资源类型：image | video | file，用于后端凭证与落库。
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///
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/// 失败统一抛出 [ApiException]，message 为可展示的中文错误。
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Future<String> uploadImage(XFile file, {String mediaType = 'image'}) async {
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final ext = _suffixOf(file.path);
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final bytes = await file.readAsBytes();
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final fileMd5 = md5.convert(bytes).toString(); // 32 位小写十六进制
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// 1. 秒传判断：已存在则直接返回 URL，跳过 COS 直传。
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final instant = await _tryInstantUpload(fileMd5);
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if (instant != null) return instant;
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// 2. 获取 STS 临时凭证（含 bucket / region / key）。
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final cred = await _fetchStsCredential(fileMd5, ext, mediaType);
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if (cred.key.isEmpty || cred.bucket.isEmpty || cred.region.isEmpty) {
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throw const ApiException(500, '上传凭证数据不完整（缺少 key/bucket/region）');
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}
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// 3. 用 STS 临时密钥直传 COS。
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final provider = TemporaryCredentialProvider(
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fetchCredentials: () async => CosCredentialData(
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startTime: cred.startTime,
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expiredTime: cred.expiredTime,
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credentials: CosCredential(
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tmpSecretId: cred.tmpSecretId,
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tmpSecretKey: cred.tmpSecretKey,
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sessionToken: cred.securityToken,
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),
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requestId: '',
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),
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);
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final cos = CosClient.withTemporaryCredential(
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temporaryCredentialProvider: provider,
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region: cred.region,
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bucket: cred.bucket,
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);
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final result = await cos.putObjectFromFile(
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objectKey: cred.key,
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file: File(file.path),
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);
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if (!result.success) {
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throw ApiException(500, '云存储上传失败：${result.message ?? "未知错误"}');
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}
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// 4. 解析可访问 URL（theme/ 走 ipscdn CDN）。
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final url = _resolveUrl(cred.key, cred.url);
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// 5. 注册 tv_resource（落库，供后续秒传与关联）。
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await _registerResource(
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fileName: file.name,
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fileKey: cred.key,
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fileUrl: url,
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fileType: mediaType,
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fileSize: bytes.length,
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suffix: ext,
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fileMd5: fileMd5,
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);
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return url;
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}
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/// 按原文件名上传 APK 文件（对齐 Web 端 `uploadThemeFileByOriginalName`）。
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///
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/// 流程：
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/// 1. `GET /theme/upload/credential?fileName=<原始文件名>&suffix=apk&type=file` 获取 STS 凭证；
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/// 2. 用 STS 临时密钥直传 COS（putObject）；
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/// 3. 返回可访问 URL（不注册 tv_resource，APK 不走 MD5 秒传）。
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///
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/// [onProgress] 上传进度回调（0~100）。
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///
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/// 失败抛出 [ApiException]。
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Future<String> uploadApkByOriginalName(
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PlatformFile file, {
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void Function(int percent)? onProgress,
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}) async {
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final fileName = file.name.trim();
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if (fileName.isEmpty) {
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throw const ApiException(400, '文件名不能为空');
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}
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final ext = _suffixOf(fileName);
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final safeExt = (ext == 'apk') ? 'apk' : (ext.isNotEmpty ? ext : 'apk');
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// 1. 获取 STS 凭证（fileName = 原始文件名，非 MD5）。
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final cred = await _fetchStsCredentialByName(
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fileName: fileName,
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suffix: safeExt,
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type: 'file',
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);
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if (cred.key.isEmpty || cred.bucket.isEmpty || cred.region.isEmpty) {
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throw const ApiException(500, '上传凭证数据不完整（缺少 key/bucket/region）');
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}
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// 2. 直传 COS。
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final provider = TemporaryCredentialProvider(
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fetchCredentials: () async => CosCredentialData(
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startTime: cred.startTime,
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expiredTime: cred.expiredTime,
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credentials: CosCredential(
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tmpSecretId: cred.tmpSecretId,
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tmpSecretKey: cred.tmpSecretKey,
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sessionToken: cred.securityToken,
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),
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requestId: '',
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),
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);
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final cos = CosClient.withTemporaryCredential(
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temporaryCredentialProvider: provider,
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region: cred.region,
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bucket: cred.bucket,
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);
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// file_picker 的 PlatformFile 可能有 path（Android 通常有）。
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final filePath = file.path;
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if (filePath == null || filePath.isEmpty) {
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throw const ApiException(400, '无法读取选中文件的路径');
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}
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final localFile = File(filePath);
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if (!localFile.existsSync()) {
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throw ApiException(400, '文件不存在：$filePath');
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}
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final result = await cos.putObjectFromFile(
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objectKey: cred.key,
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file: localFile,
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contentType: 'application/vnd.android.package-archive',
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onProgress: (count, total) {
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if (total > 0 && onProgress != null) {
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onProgress(((count / total) * 100).round());
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}
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},
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);
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if (!result.success) {
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throw ApiException(500, '云存储上传失败：${result.message ?? "未知错误"}');
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}
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// 3. 解析访问 URL。
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final url = _resolveUrl(cred.key, cred.url);
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if (url.isEmpty) {
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throw const ApiException(500, '未返回访问地址');
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}
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return url;
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}
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/// 打开系统文件选择器，仅允许 .apk 文件。
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///
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/// 返回选中的 [PlatformFile]，用户取消返回 null。
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static Future<PlatformFile?> pickApkFile() async {
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final result = await FilePicker.platform.pickFiles(
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type: FileType.custom,
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allowedExtensions: ['apk'],
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);
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final files = result?.files;
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if (files == null || files.isEmpty) return null;
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return files.first;
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}
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/// 取文件扩展名（不含点，小写）。
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String _suffixOf(String path) {
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final name = path.split(Platform.pathSeparator).last;
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final idx = name.lastIndexOf('.');
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return idx > 0 ? name.substring(idx + 1).toLowerCase() : '';
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}
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/// 秒传判断：已存在同 MD5 资源则直接返回其访问 URL，否则返回 null。
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///
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/// 任何异常都不阻塞主流程（当作未命中秒传）。
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Future<String?> _tryInstantUpload(String fileMd5) async {
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try {
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final resp = await _dio.get<Map<String, dynamic>>(
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'/theme/resource/check-md5',
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queryParameters: {'fileMd5': fileMd5},
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);
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final data = resp.data;
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if (data == null) return null;
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bool uploaded = data['uploaded'] == true;
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dynamic resourceRaw = data['resource'];
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if (data['data'] is Map) {
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final inner = data['data'] as Map;
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if (inner['uploaded'] == true) {
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uploaded = true;
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resourceRaw ??= inner['resource'] ?? inner;
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}
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}
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if (!uploaded) return null;
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final r = resourceRaw is Map
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? Map<String, dynamic>.from(resourceRaw as Map)
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: null;
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if (r == null) return null;
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final id = r['id'] ?? r['resourceId'] ?? r['resource_id'];
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if (id == null || id == 0) return null;
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final key = (r['key'] ?? r['fileKey'] ?? '').toString();
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final rawUrl = (r['url'] ?? r['fileUrl'] ?? '').toString();
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final url = _resolveUrl(key, rawUrl);
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return url.isNotEmpty ? url : null;
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} catch (_) {
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return null;
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}
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}
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/// 获取 STS 临时凭证（以文件 MD5 作为 fileName，用于主题资源秒传）。
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Future<_StsCred> _fetchStsCredential(
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String fileMd5,
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String ext,
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String mediaType,
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) async {
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final resp = await _dio.get<Map<String, dynamic>>(
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'/theme/upload/credential',
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queryParameters: <String, dynamic>{
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'fileName': fileMd5,
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if (ext.isNotEmpty) 'suffix': ext,
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'type': mediaType,
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},
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);
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final data = resp.data;
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if (data == null) {
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throw const ApiException(500, '获取上传凭证失败：响应为空');
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}
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return _StsCred.fromJson(Map<String, dynamic>.from(data as Map));
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}
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/// 获取 STS 临时凭证（以原始文件名作为 fileName，用于 APK 等需保留原名的场景）。
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///
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/// 对齐 Web 端 `fetchThemeCredentialByOriginalName`：
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/// `GET /theme/upload/credential?fileName=<原始名>&suffix=<扩展名>&type=file`
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Future<_StsCred> _fetchStsCredentialByName({
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required String fileName,
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required String suffix,
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required String type,
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}) async {
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final resp = await _dio.get<Map<String, dynamic>>(
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'/theme/upload/credential',
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queryParameters: <String, dynamic>{
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'fileName': fileName,
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'suffix': suffix,
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'type': type,
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},
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);
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final data = resp.data;
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if (data == null) {
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throw const ApiException(500, '获取上传凭证失败：响应为空');
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}
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return _StsCred.fromJson(Map<String, dynamic>.from(data as Map));
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}
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/// 注册 tv_resource。
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Future<void> _registerResource({
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required String fileName,
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required String fileKey,
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required String fileUrl,
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required String fileType,
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required int fileSize,
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required String suffix,
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required String fileMd5,
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}) async {
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try {
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await _dio.post<Map<String, dynamic>>(
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'/theme/resource/register',
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data: <String, dynamic>{
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'fileName': fileName,
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'fileKey': fileKey,
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'fileUrl': fileUrl,
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'fileType': fileType,
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'fileSize': fileSize,
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'suffix': suffix,
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'fileMd5': fileMd5,
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},
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);
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} catch (e) {
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// 直传已成功，但资源记录未落库：影响后续秒传与关联，明确提示。
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throw ApiException(500, '资源注册失败：${formatApiError(e)}');
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}
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}
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/// 解析访问 URL：theme/ 路径走 ipscdn CDN，其余沿用后端 url 或历史 CDN。
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static String _resolveUrl(String key, String apiUrl) {
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final k = key.replaceFirst(RegExp(r'^/+'), '');
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if (k.startsWith('theme/')) {
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return '$_themeCdnBase/$k';
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}
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if (apiUrl.startsWith('http')) return apiUrl;
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if (k.startsWith('CloudMedia')) return 'https://metarialcdn.ainetv.cn/$k';
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return apiUrl.isNotEmpty ? apiUrl : '$_themeCdnBase/$k';
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}
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}
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/// 归一化后的 STS 临时凭证（兼容后端大小写字段名）。
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class _StsCred {
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_StsCred({
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|||
|
|
required this.tmpSecretId,
|
|||
|
|
required this.tmpSecretKey,
|
|||
|
|
required this.securityToken,
|
|||
|
|
required this.startTime,
|
|||
|
|
required this.expiredTime,
|
|||
|
|
required this.bucket,
|
|||
|
|
required this.region,
|
|||
|
|
required this.key,
|
|||
|
|
required this.url,
|
|||
|
|
});
|
|||
|
|
|
|||
|
|
final String tmpSecretId;
|
|||
|
|
final String tmpSecretKey;
|
|||
|
|
final String securityToken;
|
|||
|
|
final int startTime;
|
|||
|
|
final int expiredTime;
|
|||
|
|
final String bucket;
|
|||
|
|
final String region;
|
|||
|
|
final String key;
|
|||
|
|
final String url;
|
|||
|
|
|
|||
|
|
static String _pick(Map m, List<String> keys) {
|
|||
|
|
for (final k in keys) {
|
|||
|
|
final v = m[k];
|
|||
|
|
if (v != null && v.toString().trim().isNotEmpty) return v.toString().trim();
|
|||
|
|
}
|
|||
|
|
return '';
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static int _pickInt(Map m, List<String> keys) {
|
|||
|
|
for (final k in keys) {
|
|||
|
|
final v = m[k];
|
|||
|
|
if (v != null) {
|
|||
|
|
final n = v is int ? v : int.tryParse(v.toString());
|
|||
|
|
if (n != null && n > 0) return n;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
factory _StsCred.fromJson(Map<String, dynamic> m) {
|
|||
|
|
final now = DateTime.now().millisecondsSinceEpoch ~/ 1000;
|
|||
|
|
var start = _pickInt(m, ['StartTime', 'startTime']);
|
|||
|
|
if (start == 0) start = now - 60;
|
|||
|
|
var exp = _pickInt(m, ['ExpiredTime', 'expiredTime']);
|
|||
|
|
if (exp == 0) exp = now + 1800;
|
|||
|
|
return _StsCred(
|
|||
|
|
tmpSecretId: _pick(m, ['TmpSecretId', 'tmpSecretId']),
|
|||
|
|
tmpSecretKey: _pick(m, ['TmpSecretKey', 'tmpSecretKey']),
|
|||
|
|
securityToken: _pick(m, ['SecurityToken', 'securityToken', 'sessionToken']),
|
|||
|
|
startTime: start,
|
|||
|
|
expiredTime: exp,
|
|||
|
|
bucket: _pick(m, ['bucket', 'Bucket']),
|
|||
|
|
region: _pick(m, ['region', 'Region']),
|
|||
|
|
key: _pick(m, ['key', 'Key']),
|
|||
|
|
url: _pick(m, ['url']),
|
|||
|
|
);
|
|||
|
|
}
|
|||
|
|
}
|