141 lines
3.4 KiB
TypeScript
141 lines
3.4 KiB
TypeScript
import * as youtubeDL from 'youtube-dl'
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import { truncate } from 'lodash'
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import { CONSTRAINTS_FIELDS, VIDEO_CATEGORIES } from '../initializers'
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import { logger } from './logger'
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import { generateVideoTmpPath } from './utils'
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export type YoutubeDLInfo = {
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name?: string
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description?: string
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category?: number
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licence?: number
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nsfw?: boolean
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tags?: string[]
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thumbnailUrl?: string
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}
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function getYoutubeDLInfo (url: string): Promise<YoutubeDLInfo> {
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return new Promise<YoutubeDLInfo>((res, rej) => {
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const options = [ '-j', '--flat-playlist' ]
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youtubeDL.getInfo(url, options, (err, info) => {
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if (err) return rej(err)
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const obj = normalizeObject(info)
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return res(buildVideoInfo(obj))
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})
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})
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}
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function downloadYoutubeDLVideo (url: string) {
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const path = generateVideoTmpPath(url)
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logger.info('Importing youtubeDL video %s', url)
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const options = [ '-f', 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best', '-o', path ]
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return new Promise<string>((res, rej) => {
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youtubeDL.exec(url, options, async (err, output) => {
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if (err) return rej(err)
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return res(path)
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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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downloadYoutubeDLVideo,
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getYoutubeDLInfo
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}
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// ---------------------------------------------------------------------------
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function normalizeObject (obj: any) {
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const newObj: any = {}
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for (const key of Object.keys(obj)) {
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// Deprecated key
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if (key === 'resolution') continue
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const value = obj[key]
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if (typeof value === 'string') {
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newObj[key] = value.normalize()
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} else {
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newObj[key] = value
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}
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}
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return newObj
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}
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function buildVideoInfo (obj: any) {
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return {
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name: titleTruncation(obj.title),
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description: descriptionTruncation(obj.description),
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category: getCategory(obj.categories),
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licence: getLicence(obj.license),
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nsfw: isNSFW(obj),
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tags: getTags(obj.tags),
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thumbnailUrl: obj.thumbnail || undefined
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}
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}
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function titleTruncation (title: string) {
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return truncate(title, {
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'length': CONSTRAINTS_FIELDS.VIDEOS.NAME.max,
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'separator': /,? +/,
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'omission': ' […]'
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})
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}
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function descriptionTruncation (description: string) {
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if (!description || description.length < CONSTRAINTS_FIELDS.VIDEOS.DESCRIPTION.min) return undefined
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return truncate(description, {
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'length': CONSTRAINTS_FIELDS.VIDEOS.DESCRIPTION.max,
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'separator': /,? +/,
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'omission': ' […]'
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})
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}
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function isNSFW (info: any) {
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return info.age_limit && info.age_limit >= 16
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}
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function getTags (tags: any) {
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if (Array.isArray(tags) === false) return []
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return tags
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.filter(t => t.length < CONSTRAINTS_FIELDS.VIDEOS.TAG.max && t.length > CONSTRAINTS_FIELDS.VIDEOS.TAG.min)
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.map(t => t.normalize())
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.slice(0, 5)
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}
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function getLicence (licence: string) {
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if (!licence) return undefined
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if (licence.indexOf('Creative Commons Attribution') !== -1) return 1
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return undefined
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}
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function getCategory (categories: string[]) {
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if (!categories) return undefined
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const categoryString = categories[0]
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if (!categoryString || typeof categoryString !== 'string') return undefined
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if (categoryString === 'News & Politics') return 11
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for (const key of Object.keys(VIDEO_CATEGORIES)) {
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const category = VIDEO_CATEGORIES[key]
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if (categoryString.toLowerCase() === category.toLowerCase()) return parseInt(key, 10)
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}
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return undefined
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}
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