import { truncate } from 'lodash' import { CONSTRAINTS_FIELDS, VIDEO_CATEGORIES } from '../initializers' import { logger } from './logger' import { generateVideoTmpPath } from './utils' import { join } from 'path' import { root } from './core-utils' import { ensureDir, writeFile } from 'fs-extra' import * as request from 'request' import { createWriteStream } from 'fs' export type YoutubeDLInfo = { name?: string description?: string category?: number licence?: number nsfw?: boolean tags?: string[] thumbnailUrl?: string } const processOptions = { maxBuffer: 1024 * 1024 * 10 // 10MB } function getYoutubeDLInfo (url: string, opts?: string[]): Promise { return new Promise(async (res, rej) => { const options = opts || [ '-j', '--flat-playlist' ] const youtubeDL = await safeGetYoutubeDL() youtubeDL.getInfo(url, options, (err, info) => { if (err) return rej(err) if (info.is_live === true) return rej(new Error('Cannot download a live streaming.')) const obj = buildVideoInfo(normalizeObject(info)) if (obj.name && obj.name.length < CONSTRAINTS_FIELDS.VIDEOS.NAME.min) obj.name += ' video' return res(obj) }) }) } function downloadYoutubeDLVideo (url: string) { const path = generateVideoTmpPath(url) logger.info('Importing youtubeDL video %s', url) const options = [ '-f', 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best', '-o', path ] return new Promise(async (res, rej) => { const youtubeDL = await safeGetYoutubeDL() youtubeDL.exec(url, options, processOptions, err => { if (err) return rej(err) return res(path) }) }) } // Thanks: https://github.com/przemyslawpluta/node-youtube-dl/blob/master/lib/downloader.js // We rewrote it to avoid sync calls async function updateYoutubeDLBinary () { logger.info('Updating youtubeDL binary.') const binDirectory = join(root(), 'node_modules', 'youtube-dl', 'bin') const bin = join(binDirectory, 'youtube-dl') const detailsPath = join(binDirectory, 'details') const url = 'https://yt-dl.org/downloads/latest/youtube-dl' await ensureDir(binDirectory) return new Promise(res => { request.get(url, { followRedirect: false }, (err, result) => { if (err) { logger.error('Cannot update youtube-dl.', { err }) return res() } if (result.statusCode !== 302) { logger.error('youtube-dl update error: did not get redirect for the latest version link. Status %d', result.statusCode) return res() } const url = result.headers.location const downloadFile = request.get(url) const newVersion = /yt-dl\.org\/downloads\/(\d{4}\.\d\d\.\d\d(\.\d)?)\/youtube-dl/.exec(url)[ 1 ] downloadFile.on('response', result => { if (result.statusCode !== 200) { logger.error('Cannot update youtube-dl: new version response is not 200, it\'s %d.', result.statusCode) return res() } downloadFile.pipe(createWriteStream(bin, { mode: 493 })) }) downloadFile.on('error', err => { logger.error('youtube-dl update error.', { err }) return res() }) downloadFile.on('end', () => { const details = JSON.stringify({ version: newVersion, path: bin, exec: 'youtube-dl' }) writeFile(detailsPath, details, { encoding: 'utf8' }, err => { if (err) { logger.error('youtube-dl update error: cannot write details.', { err }) return res() } logger.info('youtube-dl updated to version %s.', newVersion) return res() }) }) }) }) } async function safeGetYoutubeDL () { let youtubeDL try { youtubeDL = require('youtube-dl') } catch (e) { // Download binary await updateYoutubeDLBinary() youtubeDL = require('youtube-dl') } return youtubeDL } // --------------------------------------------------------------------------- export { updateYoutubeDLBinary, downloadYoutubeDLVideo, getYoutubeDLInfo, safeGetYoutubeDL } // --------------------------------------------------------------------------- function normalizeObject (obj: any) { const newObj: any = {} for (const key of Object.keys(obj)) { // Deprecated key if (key === 'resolution') continue const value = obj[key] if (typeof value === 'string') { newObj[key] = value.normalize() } else { newObj[key] = value } } return newObj } function buildVideoInfo (obj: any) { return { name: titleTruncation(obj.title), description: descriptionTruncation(obj.description), category: getCategory(obj.categories), licence: getLicence(obj.license), nsfw: isNSFW(obj), tags: getTags(obj.tags), thumbnailUrl: obj.thumbnail || undefined } } function titleTruncation (title: string) { return truncate(title, { 'length': CONSTRAINTS_FIELDS.VIDEOS.NAME.max, 'separator': /,? +/, 'omission': ' […]' }) } function descriptionTruncation (description: string) { if (!description || description.length < CONSTRAINTS_FIELDS.VIDEOS.DESCRIPTION.min) return undefined return truncate(description, { 'length': CONSTRAINTS_FIELDS.VIDEOS.DESCRIPTION.max, 'separator': /,? +/, 'omission': ' […]' }) } function isNSFW (info: any) { return info.age_limit && info.age_limit >= 16 } function getTags (tags: any) { if (Array.isArray(tags) === false) return [] return tags .filter(t => t.length < CONSTRAINTS_FIELDS.VIDEOS.TAG.max && t.length > CONSTRAINTS_FIELDS.VIDEOS.TAG.min) .map(t => t.normalize()) .slice(0, 5) } function getLicence (licence: string) { if (!licence) return undefined if (licence.indexOf('Creative Commons Attribution') !== -1) return 1 return undefined } function getCategory (categories: string[]) { if (!categories) return undefined const categoryString = categories[0] if (!categoryString || typeof categoryString !== 'string') return undefined if (categoryString === 'News & Politics') return 11 for (const key of Object.keys(VIDEO_CATEGORIES)) { const category = VIDEO_CATEGORIES[key] if (categoryString.toLowerCase() === category.toLowerCase()) return parseInt(key, 10) } return undefined }