server/lib/files-cache/videos-caption-cache.ts

   1 import { join } from 'path'
   2 import { doRequestAndSaveToFile } from '@server/helpers/requests'
   3 import { CONFIG } from '../../initializers/config'
   4 import { FILES_CACHE } from '../../initializers/constants'
   5 import { VideoModel } from '../../models/video/video'
   6 import { VideoCaptionModel } from '../../models/video/video-caption'
   7 import { AbstractVideoStaticFileCache } from './abstract-video-static-file-cache'
   8
   9 class VideosCaptionCache extends AbstractVideoStaticFileCache <string> {
  10
  11   private static instance: VideosCaptionCache
  12
  13   private constructor () {
  14     super()
  15   }
  16
  17   static get Instance () {
  18     return this.instance || (this.instance = new this())
  19   }
  20
  21   async getFilePathImpl (filename: string) {
  22     const videoCaption = await VideoCaptionModel.loadWithVideoByFilename(filename)
  23     if (!videoCaption) return undefined
  24
  25     if (videoCaption.isOwned()) return { isOwned: true, path: join(CONFIG.STORAGE.CAPTIONS_DIR, videoCaption.filename) }
  26
  27     return this.loadRemoteFile(filename)
  28   }
  29
  30   // Key is the caption filename
  31   protected async loadRemoteFile (key: string) {
  32     const videoCaption = await VideoCaptionModel.loadWithVideoByFilename(key)
  33     if (!videoCaption) return undefined
  34
  35     if (videoCaption.isOwned()) throw new Error('Cannot load remote caption of owned video.')
  36
  37     // Used to fetch the path
  38     const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(videoCaption.videoId)
  39     if (!video) return undefined
  40
  41     const remoteUrl = videoCaption.getFileUrl(video)
  42     const destPath = join(FILES_CACHE.VIDEO_CAPTIONS.DIRECTORY, videoCaption.filename)
  43
  44     await doRequestAndSaveToFile({ uri: remoteUrl }, destPath)
  45
  46     return { isOwned: false, path: destPath }
  47   }
  48 }
  49
  50 export {
  51   VideosCaptionCache
  52 }