PeerTube/server/core/lib/files-cache/video-captions-simple-file-...

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import { join } from 'path'
import { logger } from '@server/helpers/logger.js'
import { doRequestAndSaveToFile } from '@server/helpers/requests.js'
import { CONFIG } from '../../initializers/config.js'
import { FILES_CACHE } from '../../initializers/constants.js'
import { VideoModel } from '../../models/video/video.js'
import { VideoCaptionModel } from '../../models/video/video-caption.js'
import { AbstractSimpleFileCache } from './shared/abstract-simple-file-cache.js'
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class VideoCaptionsSimpleFileCache extends AbstractSimpleFileCache <string> {
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private static instance: VideoCaptionsSimpleFileCache
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private constructor () {
super()
}
static get Instance () {
return this.instance || (this.instance = new this())
}
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async getFilePathImpl (filename: string) {
const videoCaption = await VideoCaptionModel.loadWithVideoByFilename(filename)
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if (!videoCaption) return undefined
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if (videoCaption.isOwned()) {
return { isOwned: true, path: join(CONFIG.STORAGE.CAPTIONS_DIR, videoCaption.filename) }
}
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return this.loadRemoteFile(filename)
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}
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// Key is the caption filename
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protected async loadRemoteFile (key: string) {
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const videoCaption = await VideoCaptionModel.loadWithVideoByFilename(key)
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if (!videoCaption) return undefined
if (videoCaption.isOwned()) throw new Error('Cannot load remote caption of owned video.')
// Used to fetch the path
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const video = await VideoModel.loadFull(videoCaption.videoId)
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if (!video) return undefined
const remoteUrl = videoCaption.getFileUrl(video)
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const destPath = join(FILES_CACHE.VIDEO_CAPTIONS.DIRECTORY, videoCaption.filename)
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try {
await doRequestAndSaveToFile(remoteUrl, destPath)
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return { isOwned: false, path: destPath }
} catch (err) {
logger.info('Cannot fetch remote caption file %s.', remoteUrl, { err })
return undefined
}
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}
}
export {
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VideoCaptionsSimpleFileCache
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}