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

   1 import { join } from 'path'
   2 import { logger } from '@server/helpers/logger'
   3 import { doRequestAndSaveToFile } from '@server/helpers/requests'
   4 import { CONFIG } from '../../initializers/config'
   5 import { FILES_CACHE } from '../../initializers/constants'
   6 import { VideoModel } from '../../models/video/video'
   7 import { VideoCaptionModel } from '../../models/video/video-caption'
   8 import { AbstractVideoStaticFileCache } from './abstract-video-static-file-cache'
   9
  10 class VideosCaptionCache extends AbstractVideoStaticFileCache <string> {
  11
  12   private static instance: VideosCaptionCache
  13
  14   private constructor () {
  15     super()
  16   }
  17
  18   static get Instance () {
  19     return this.instance || (this.instance = new this())
  20   }
  21
  22   async getFilePathImpl (filename: string) {
  23     const videoCaption = await VideoCaptionModel.loadWithVideoByFilename(filename)
  24     if (!videoCaption) return undefined
  25
  26     if (videoCaption.isOwned()) return { isOwned: true, path: join(CONFIG.STORAGE.CAPTIONS_DIR, videoCaption.filename) }
  27
  28     return this.loadRemoteFile(filename)
  29   }
  30
  31   // Key is the caption filename
  32   protected async loadRemoteFile (key: string) {
  33     const videoCaption = await VideoCaptionModel.loadWithVideoByFilename(key)
  34     if (!videoCaption) return undefined
  35
  36     if (videoCaption.isOwned()) throw new Error('Cannot load remote caption of owned video.')
  37
  38     // Used to fetch the path
  39     const video = await VideoModel.loadFull(videoCaption.videoId)
  40     if (!video) return undefined
  41
  42     const remoteUrl = videoCaption.getFileUrl(video)
  43     const destPath = join(FILES_CACHE.VIDEO_CAPTIONS.DIRECTORY, videoCaption.filename)
  44
  45     try {
  46       await doRequestAndSaveToFile(remoteUrl, destPath)
  47
  48       return { isOwned: false, path: destPath }
  49     } catch (err) {
  50       logger.info('Cannot fetch remote caption file %s.', remoteUrl, { err })
  51
  52       return undefined
  53     }
  54   }
  55 }
  56
  57 export {
  58   VideosCaptionCache
  59 }