84 lines
2.7 KiB
TypeScript
84 lines
2.7 KiB
TypeScript
import { logger } from './logger'
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import { generateVideoTmpPath } from './utils'
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import * as WebTorrent from 'webtorrent'
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import { createWriteStream, remove } from 'fs-extra'
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import { CONFIG } from '../initializers'
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import { join } from 'path'
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function downloadWebTorrentVideo (target: { magnetUri: string, torrentName?: string }, timeout?: number) {
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const id = target.magnetUri || target.torrentName
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let timer
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const path = generateVideoTmpPath(id)
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logger.info('Importing torrent video %s', id)
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return new Promise<string>((res, rej) => {
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const webtorrent = new WebTorrent()
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let file: WebTorrent.TorrentFile
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const torrentId = target.magnetUri || join(CONFIG.STORAGE.TORRENTS_DIR, target.torrentName)
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const options = { path: CONFIG.STORAGE.VIDEOS_DIR }
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const torrent = webtorrent.add(torrentId, options, torrent => {
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if (torrent.files.length !== 1) {
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if (timer) clearTimeout(timer)
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return safeWebtorrentDestroy(webtorrent, torrentId, file.name, target.torrentName)
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.then(() => rej(new Error('Cannot import torrent ' + torrentId + ': there are multiple files in it')))
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}
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file = torrent.files[ 0 ]
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const writeStream = createWriteStream(path)
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writeStream.on('finish', () => {
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if (timer) clearTimeout(timer)
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return safeWebtorrentDestroy(webtorrent, torrentId, file.name, target.torrentName)
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.then(() => res(path))
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})
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file.createReadStream().pipe(writeStream)
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})
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torrent.on('error', err => rej(err))
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if (timeout) {
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timer = setTimeout(async () => {
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return safeWebtorrentDestroy(webtorrent, torrentId, file ? file.name : undefined, target.torrentName)
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.then(() => rej(new Error('Webtorrent download timeout.')))
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}, timeout)
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}
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})
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}
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// ---------------------------------------------------------------------------
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export {
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downloadWebTorrentVideo
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}
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// ---------------------------------------------------------------------------
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function safeWebtorrentDestroy (webtorrent: WebTorrent.Instance, torrentId: string, filename?: string, torrentName?: string) {
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return new Promise(res => {
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webtorrent.destroy(err => {
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// Delete torrent file
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if (torrentName) {
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remove(torrentId)
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.catch(err => logger.error('Cannot remove torrent %s in webtorrent download.', torrentId, { err }))
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}
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// Delete downloaded file
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if (filename) {
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remove(join(CONFIG.STORAGE.VIDEOS_DIR, filename))
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.catch(err => logger.error('Cannot remove torrent file %s in webtorrent download.', filename, { err }))
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}
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if (err) {
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logger.warn('Cannot destroy webtorrent in timeout.', { err })
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}
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return res()
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})
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})
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}
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