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import { renamePromise, unlinkPromise } from './core-utils'
import { join } from 'path'
import { CONFIG } from '../initializers'
import { VideoCaptionModel } from '../models/video/video-caption'
import * as srt2vtt from 'srt-to-vtt'
import { createReadStream, createWriteStream } from 'fs-extra'
async function moveAndProcessCaptionFile (physicalFile: { filename: string, path: string }, videoCaption: VideoCaptionModel) {
const videoCaptionsDir = CONFIG.STORAGE.CAPTIONS_DIR
const destination = join(videoCaptionsDir, videoCaption.getCaptionName())
// Convert this srt file to vtt
if (physicalFile.path.endsWith('.srt')) {
await convertSrtToVtt(physicalFile.path, destination)
await unlinkPromise(physicalFile.path)
} else { // Just move the vtt file
await renamePromise(physicalFile.path, destination)
}
// This is important in case if there is another attempt in the retry process
physicalFile.filename = videoCaption.getCaptionName()
physicalFile.path = destination
}
// ---------------------------------------------------------------------------
export {
moveAndProcessCaptionFile
}
// ---------------------------------------------------------------------------
function convertSrtToVtt (source: string, destination: string) {
return new Promise((res, rej) => {
const file = createReadStream(source)
const converter = srt2vtt()
const writer = createWriteStream(destination)
for (const s of [ file, converter, writer ]) {
s.on('error', err => rej(err))
}
return file.pipe(converter)
.pipe(writer)
.on('finish', () => res())
})
}
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