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

   1 import { join } from 'path'
   2 import { FILES_CACHE } from '../../initializers/constants'
   3 import { VideoModel } from '../../models/video/video'
   4 import { VideoCaptionModel } from '../../models/video/video-caption'
   5 import { AbstractVideoStaticFileCache } from './abstract-video-static-file-cache'
   6 import { CONFIG } from '../../initializers/config'
   7
   8 type GetPathParam = { videoId: string, language: string }
   9
  10 class VideosCaptionCache extends AbstractVideoStaticFileCache <GetPathParam> {
  11
  12   private static readonly KEY_DELIMITER = '%'
  13   private static instance: VideosCaptionCache
  14
  15   private constructor () {
  16     super()
  17   }
  18
  19   static get Instance () {
  20     return this.instance || (this.instance = new this())
  21   }
  22
  23   async getFilePathImpl (params: GetPathParam) {
  24     const videoCaption = await VideoCaptionModel.loadByVideoIdAndLanguage(params.videoId, params.language)
  25     if (!videoCaption) return undefined
  26
  27     if (videoCaption.isOwned()) return join(CONFIG.STORAGE.CAPTIONS_DIR, videoCaption.getCaptionName())
  28
  29     const key = params.videoId + VideosCaptionCache.KEY_DELIMITER + params.language
  30     return this.loadRemoteFile(key)
  31   }
  32
  33   protected async loadRemoteFile (key: string) {
  34     const [ videoId, language ] = key.split(VideosCaptionCache.KEY_DELIMITER)
  35
  36     const videoCaption = await VideoCaptionModel.loadByVideoIdAndLanguage(videoId, language)
  37     if (!videoCaption) return undefined
  38
  39     if (videoCaption.isOwned()) throw new Error('Cannot load remote caption of owned video.')
  40
  41     // Used to fetch the path
  42     const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(videoId)
  43     if (!video) return undefined
  44
  45     // FIXME: use URL
  46     const remoteStaticPath = videoCaption.getCaptionStaticPath()
  47     const destPath = join(FILES_CACHE.VIDEO_CAPTIONS.DIRECTORY, videoCaption.getCaptionName())
  48
  49     return this.saveRemoteVideoFileAndReturnPath(video, remoteStaticPath, destPath)
  50   }
  51 }
  52
  53 export {
  54   VideosCaptionCache
  55 }