2 files changed, 55 insertions, 1 deletions

diff --git a/server/lib/files-cache/abstract-video-static-file-cache.ts b/server/lib/files-cache/abstract-video-static-file-cache.ts
index c06355446..af66689a0 100644
--- a/server/lib/files-cache/abstract-video-static-file-cache.ts
+++ b/server/lib/files-cache/abstract-video-static-file-cache.ts
@@ -2,7 +2,7 @@ import { remove } from 'fs-extra'
 import { logger } from '../../helpers/logger'
 import * as memoizee from 'memoizee'
 
-type GetFilePathResult = { isOwned: boolean, path: string } | undefined
+type GetFilePathResult = { isOwned: boolean, path: string, downloadName?: string } | undefined
 
 export abstract class AbstractVideoStaticFileCache <T> {
 
diff --git a/server/lib/files-cache/videos-torrent-cache.ts b/server/lib/files-cache/videos-torrent-cache.ts
new file mode 100644
index 000000000..ca0e1770d
--- /dev/null
+++ b/server/lib/files-cache/videos-torrent-cache.ts
@@ -0,0 +1,54 @@
+import { join } from 'path'
+import { doRequestAndSaveToFile } from '@server/helpers/requests'
+import { VideoFileModel } from '@server/models/video/video-file'
+import { CONFIG } from '../../initializers/config'
+import { FILES_CACHE } from '../../initializers/constants'
+import { VideoModel } from '../../models/video/video'
+import { AbstractVideoStaticFileCache } from './abstract-video-static-file-cache'
+
+class VideosTorrentCache extends AbstractVideoStaticFileCache <string> {
+
+  private static instance: VideosTorrentCache
+
+  private constructor () {
+    super()
+  }
+
+  static get Instance () {
+    return this.instance || (this.instance = new this())
+  }
+
+  async getFilePathImpl (filename: string) {
+    const file = await VideoFileModel.loadWithVideoOrPlaylistByTorrentFilename(filename)
+    if (!file) return undefined
+
+    if (file.getVideo().isOwned()) return { isOwned: true, path: join(CONFIG.STORAGE.TORRENTS_DIR, file.torrentFilename) }
+
+    return this.loadRemoteFile(filename)
+  }
+
+  // Key is the torrent filename
+  protected async loadRemoteFile (key: string) {
+    const file = await VideoFileModel.loadWithVideoOrPlaylistByTorrentFilename(key)
+    if (!file) return undefined
+
+    if (file.getVideo().isOwned()) throw new Error('Cannot load remote file of owned video.')
+
+    // Used to fetch the path
+    const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(file.getVideo().id)
+    if (!video) return undefined
+
+    const remoteUrl = file.getRemoteTorrentUrl(video)
+    const destPath = join(FILES_CACHE.TORRENTS.DIRECTORY, file.torrentFilename)
+
+    await doRequestAndSaveToFile({ uri: remoteUrl }, destPath)
+
+    const downloadName = `${video.name}-${file.resolution}p.torrent`
+
+    return { isOwned: false, path: destPath, downloadName }
+  }
+}
+
+export {
+  VideosTorrentCache
+}