feat: 完善媒体管理与备份迁移流程
- 视频上传生成缩略图并提供占位封面和失败原因展示 - 支持 HLS 按需重新封装 MP4,并限制临时文件生命周期与访问权限 - 完善视频、文件 API 文档、搜索、批量删除和单次转码质量参数 - 修复备份恢复与跨后端迁移遗漏缩略图、HLS 清单和分片的问题 - 将备份任务、归档和下载权限按用户隔离 - 增加仅清理当前用户数据的高危存储清空流程和二次文字确认 - 修复 S3 中文文件名元数据及 CLI 数据库连接问题 - 补充备份恢复、用户隔离、媒体资源和转码相关测试
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import type { ImageIndexRow } from './image-index'
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import type { StorageBackend } from './storage/types'
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import { hlsSegmentNames } from './transcode'
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async function streamToString(stream: NodeJS.ReadableStream): Promise<string> {
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const chunks: Buffer[] = []
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for await (const chunk of stream) {
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chunks.push(Buffer.from(chunk as Uint8Array))
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}
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return Buffer.concat(chunks).toString('utf8')
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}
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/** 一个媒体记录对应的全部存储对象,包括原文件、缩略图和 HLS 附属文件。 */
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export async function collectMediaAssetKeys(
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row: ImageIndexRow,
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backend: Pick<StorageBackend, 'createStream'>
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): Promise<string[]> {
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const keys = new Set<string>()
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if (Number(row.source_deleted ?? 0) !== 1) {
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keys.add(row.key)
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}
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if (row.thumb_key) {
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keys.add(row.thumb_key)
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}
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if (row.hls_key) {
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keys.add(row.hls_key)
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const dir = row.hls_key.slice(0, row.hls_key.lastIndexOf('/'))
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const playlist = await streamToString(await backend.createStream(row.hls_key))
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for (const name of hlsSegmentNames(playlist)) {
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keys.add(`${dir}/${name}`)
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}
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}
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return [...keys]
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}
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