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

   1 import { join } from 'path'
   2 import { FILES_CACHE, STATIC_PATHS } from '../../initializers/constants'
   3 import { VideoModel } from '../../models/video/video'
   4 import { AbstractVideoStaticFileCache } from './abstract-video-static-file-cache'
   5 import { doRequestAndSaveToFile } from '@server/helpers/requests'
   6 import { buildRemoteVideoBaseUrl } from '@server/helpers/activitypub'
   7
   8 class VideosPreviewCache extends AbstractVideoStaticFileCache <string> {
   9
  10   private static instance: VideosPreviewCache
  11
  12   private constructor () {
  13     super()
  14   }
  15
  16   static get Instance () {
  17     return this.instance || (this.instance = new this())
  18   }
  19
  20   async getFilePathImpl (videoUUID: string) {
  21     const video = await VideoModel.loadByUUID(videoUUID)
  22     if (!video) return undefined
  23
  24     if (video.isOwned()) return { isOwned: true, path: video.getPreview().getPath() }
  25
  26     return this.loadRemoteFile(videoUUID)
  27   }
  28
  29   protected async loadRemoteFile (key: string) {
  30     const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(key)
  31     if (!video) return undefined
  32
  33     if (video.isOwned()) throw new Error('Cannot load remote preview of owned video.')
  34
  35     const preview = video.getPreview()
  36     const destPath = join(FILES_CACHE.PREVIEWS.DIRECTORY, preview.filename)
  37
  38     const remoteUrl = preview.getFileUrl(video)
  39     await doRequestAndSaveToFile({ uri: remoteUrl }, destPath)
  40
  41     return { isOwned: false, path: destPath }
  42   }
  43 }
  44
  45 export {
  46   VideosPreviewCache
  47 }