@bigfishtv/cockpit/src/utils/videoUtils.js

/**
 * Video Utilities
 * @module Utilities/videoUtils
 */

/**
 * Takes a Youtube or Viemo url and returns an object with id and playlist_id (if available) extracted, otherwise returns false
 * @param  {String} string - Youtube or Vimeo url
 * @return {Object}
 */
export function detectVideo(str) {
	const youtube_id = extractYoutubeId(str)
	const youtube_playlist_id = extractYoutubePlaylistId(str)
	const vimeo_id = extractVimeoId(str)
	const wistia_id = extractWistiaId(str)

	if (youtube_playlist_id || youtube_id) {
		return {
			type: 'youtube',
			video_id: youtube_id,
			playlist_id: youtube_playlist_id || null,
			start_time: extractYouTubeStartTime(str),
			passcode: null,
		}
	}

	if (vimeo_id) {
		return {
			type: 'vimeo',
			video_id: vimeo_id,
			playlist_id: null,
			start_time: extractVimeoStartTime(str),
			passcode: extractVimeoPasscode(str) || null,
		}
	}

	if (wistia_id) {
		return {
			type: 'wistia',
			video_id: wistia_id,
			playlist_id: null,
			start_time: extractWistiaStartTime(str),
			passcode: null,
		}
	}

	return false
}

/**
 * Extracts id from Youtube url, else false
 * @param  {String} string - Youtube url
 * @return {String}
 */
export function extractYoutubeId(str) {
	str = str.trim()
	const matches = str.match(
		/(?:youtube\.com\/(?:[^\/]+\/.+\/|(?:v|e(?:mbed)?)\/|.*[?&]v=)|youtu\.be\/)([^"&?\/ ]{11})/i
	)
	if (str.match(/^[A-Za-z0-9_-]{11}$/)) {
		return str
	} else if (matches) {
		return matches[1]
	} else {
		return false
	}
}

/**
 * Extracts playlist id from Youtube url, else false
 * @param  {String} string - Youtube url
 * @return {String}
 */
export function extractYoutubePlaylistId(str) {
	str = str.trim()
	const matches = str.match(/list=(PL[A-Za-z0-9_-]{16,32})/)
	if (str.match(/^PL[A-Za-z0-9_-]{16,32}$/)) {
		return str
	} else if (matches) {
		return matches[1]
	} else {
		return false
	}
}

/**
 * Extracts id from Vimeo url, else false
 * @param  {String} string - Vimeo url
 * @return {String}
 */
export function extractVimeoId(str) {
	str = str.trim()
	const matches = str.match(/vimeo.com\/(video\/)?(\d+)/i)
	if (str.match(/^\d+$/)) {
		return str
	} else if (matches) {
		return matches[2]
	} else {
		return false
	}
}

/**
 * Extracts id from Wistia video embed
 * @param  {String} string - Wistia embed code
 * @return {String}
 */
export function extractWistiaId(str) {
	if (str.indexOf('/medias/') > 0) {
		return str.split('/medias/')[1]
	} else if (str.indexOf('iframe') > 0) {
		const matches = str.match(/embed\/iframe\/([^\?]+)/i)
		if (matches) return matches[1]
	} else {
		const matches = str.match(/wistia_async_(.+?) /i)
		if (matches) return matches[1]
	}
	return false
}

/**
 * Returns the start time of a wistia embed video (default is 0)
 *
 * @param {String} str
 * @returns {Number}
 */
export function extractWistiaStartTime(str) {
	let matches = str.match(/[\?&]w?time=(\d+)m(\d+)s/)
	if (matches) {
		return parseInt(matches[1], 10) * 60 + parseInt(matches[2], 10)
	}
	matches = str.match(/[\?&]w?time=(\d+)/)
	if (matches) {
		return parseInt(matches[1], 10)
	}
	return 0
}

/**
 * Returns the start time of a youtube embed video (default is 0)
 *
 * @param {String} str
 * @returns {Number}
 */
export function extractYouTubeStartTime(str) {
	const matches = str.match(/\bt=(\d+)/)
	if (matches) {
		return parseInt(matches[1], 10)
	}
	return 0
}

/**
 * Returns the start time of a vimeo embed video (default is 0)
 *
 * @param {String} str
 * @returns {Number}
 */
export function extractVimeoStartTime(str) {
	let matches = str.match(/#t=(\d+)m(\d+)s/)
	if (matches) {
		return parseInt(matches[1], 10) * 60 + parseInt(matches[2], 10)
	}
	matches = str.match(/#t=(\d+)/)
	if (matches) {
		return parseInt(matches[1], 10)
	}
	return 0
}

/**
 * Returns the passcode from a vimeo URL or embed code, false if not found
 *
 * @param {String} str
 * @returns {String|false}
 */
export function extractVimeoPasscode(str) {
	let matches = str.match(/\bh=([a-f0-9]{10,})/)
	if (matches) {
		return matches[1]
	}
	matches = str.match(/vimeo\.com\/(video\/)?\d+\/([a-f0-9]{10,})/)
	if (matches) {
		return matches[2]
	}
	return false
}

/**
 * Creates an embed url from an object of video settings
 * @param  {Object} props - Embed video props
 * @param  {String} props.type - vimeo or youtube
 * @param  {String} props.video_id
 * @param  {String} props.playlist_id
 * @param  {Number} props.start_time - seconds
 * @param  {String} props.passcode
 * @return {String}
 */
export function buildEmbedUrl({ type, video_id, playlist_id, start_time, passcode }) {
	if (type == 'vimeo' && video_id) {
		return `https://player.vimeo.com/video/${video_id}${passcode ? `?h=${passcode}` : ''}${
			start_time > 0 ? `#t=${start_time}` : ''
		}`
	}
	if (type == 'youtube' && playlist_id && video_id) {
		return `https://www.youtube.com/embed/${video_id}?list=${playlist_id}${start_time > 0 ? `&t=${start_time}` : ''}`
	}
	if (type == 'youtube' && video_id) {
		return `https://www.youtube.com/embed/${video_id}${start_time > 0 ? `?t=${start_time}` : ''}`
	}
	if (type == 'youtube' && playlist_id) {
		return `https://www.youtube.com/embed?list=${playlist_id}`
	}
	if (type == 'wistia') {
		return `https://fast.wistia.net/embed/iframe/${video_id}${start_time > 0 ? `?time=${start_time}` : ''}`
	}
	return false
}

/**
 * Creates external url to Vimeo or Youtube from an object of video settings
 * @param  {Object} props - Embed video props
 * @param  {String} props.type - vimeo or youtube
 * @param  {String} props.video_id
 * @param  {String} props.playlist_id
 * @param  {Number} props.start_time - seconds
 * @param  {String} props.passcode
 * @return {String}
 */
export function buildVideoUrl({ type, video_id, playlist_id, start_time, passcode }) {
	if (type == 'vimeo' && video_id) {
		return `https://vimeo.com/${video_id}${passcode ? `/${passcode}` : ''}${start_time > 0 ? `#t=${start_time}` : ''}`
	}
	if (type == 'youtube' && playlist_id && video_id) {
		return `https://www.youtube.com/watch?v=${video_id}&list=${playlist_id}${start_time > 0 ? `&t=${start_time}` : ''}`
	}
	if (type == 'youtube' && video_id) {
		return `https://www.youtube.com/watch?v=${video_id}${start_time > 0 ? `&t=${start_time}` : ''}`
	}
	if (type == 'youtube' && playlist_id) {
		return `https://www.youtube.com/playlist?list=${playlist_id}`
	}
	if (type == 'wistia') {
		return `https://fast.wistia.net/embed/iframe/${video_id}${start_time > 0 ? `?time=${start_time}` : ''}`
	}
	return false
}