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import { join } from 'path'
import { FILES_CACHE } from '../../initializers/constants'
import { VideoModel } from '../../models/video/video'
import { AbstractVideoStaticFileCache } from './abstract-video-static-file-cache'
import { doRequestAndSaveToFile } from '@server/helpers/requests'
import { ThumbnailModel } from '@server/models/video/thumbnail'
import { ThumbnailType } from '@shared/models'
import { logger } from '@server/helpers/logger'
class VideosPreviewCache extends AbstractVideoStaticFileCache <string> {
private static instance: VideosPreviewCache
private constructor () {
super()
}
static get Instance () {
return this.instance || (this.instance = new this())
}
async getFilePathImpl (filename: string) {
const thumbnail = await ThumbnailModel.loadWithVideoByFilename(filename, ThumbnailType.PREVIEW)
if (!thumbnail) return undefined
if (thumbnail.Video.isOwned()) return { isOwned: true, path: thumbnail.getPath() }
return this.loadRemoteFile(thumbnail.Video.uuid)
}
// Key is the video UUID
protected async loadRemoteFile (key: string) {
const video = await VideoModel.loadFull(key)
if (!video) return undefined
if (video.isOwned()) throw new Error('Cannot load remote preview of owned video.')
const preview = video.getPreview()
const destPath = join(FILES_CACHE.PREVIEWS.DIRECTORY, preview.filename)
const remoteUrl = preview.getFileUrl(video)
await doRequestAndSaveToFile(remoteUrl, destPath)
logger.debug('Fetched remote preview %s to %s.', remoteUrl, destPath)
return { isOwned: false, path: destPath }
}
}
export {
VideosPreviewCache
}
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