feat: DSL 磁力聚合 — 搜索/解析/预览/投递 + cilisousuo 源 + 中英双语 + Docker 部署

server/api/torrent/[infohash]/file.get.ts

@@ -0,0 +1,25 @@
+import { tryMongo } from '../../../utils/mongo'
+import { getTorrent } from '../../../utils/store'
+
+/** 下载用户上传时的原始 .torrent 文件 */
+export default defineEventHandler(async (event) => {
+  const infoHash = String(getRouterParam(event, 'infohash') || '').toLowerCase()
+  if (!/^[a-f0-9]{40}$/.test(infoHash)) {
+    throw createError({ statusCode: 400, statusMessage: 'infoHash 格式不正确' })
+  }
+
+  const doc = await tryMongo(() => getTorrent(infoHash))
+  if (!doc?.fileBase64) {
+    throw createError({ statusCode: 404, statusMessage: '没有保存该种子的原始文件（只有手动上传的种子会保存）' })
+  }
+
+  const bytes = Buffer.from(doc.fileBase64, 'base64')
+  setHeader(event, 'content-type', 'application/x-bittorrent')
+  setHeader(event, 'content-length', String(bytes.length))
+  setHeader(
+    event,
+    'content-disposition',
+    `attachment; filename="${encodeURIComponent((doc.name || infoHash).slice(0, 120))}.torrent"`
+  )
+  return bytes
+})