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

   1 import { join } from 'path'
   2 import { CACHE, CONFIG, STATIC_PATHS } from '../../initializers'
   3 import { VideoModel } from '../../models/video/video'
   4 import { AbstractVideoStaticFileCache } from './abstract-video-static-file-cache'
   5
   6 class VideosPreviewCache extends AbstractVideoStaticFileCache <string> {
   7
   8   private static instance: VideosPreviewCache
   9
  10   private constructor () {
  11     super()
  12   }
  13
  14   static get Instance () {
  15     return this.instance || (this.instance = new this())
  16   }
  17
  18   async getFilePath (videoUUID: string) {
  19     const video = await VideoModel.loadByUUID(videoUUID)
  20     if (!video) return undefined
  21
  22     if (video.isOwned()) return join(CONFIG.STORAGE.PREVIEWS_DIR, video.getPreviewName())
  23
  24     return this.loadFromLRU(videoUUID)
  25   }
  26
  27   protected async loadRemoteFile (key: string) {
  28     const video = await VideoModel.loadByUUIDAndPopulateAccountAndServerAndTags(key)
  29     if (!video) return undefined
  30
  31     if (video.isOwned()) throw new Error('Cannot load remote preview of owned video.')
  32
  33     const remoteStaticPath = join(STATIC_PATHS.PREVIEWS, video.getPreviewName())
  34     const destPath = join(CACHE.PREVIEWS.DIRECTORY, video.getPreviewName())
  35
  36     return this.saveRemoteVideoFileAndReturnPath(video, remoteStaticPath, destPath)
  37   }
  38 }
  39
  40 export {
  41   VideosPreviewCache
  42 }