client/src/standalone/videos/embed.ts

   1 import './embed.scss'
   2
   3 import 'core-js/es6/symbol'
   4 import 'core-js/es6/object'
   5 import 'core-js/es6/function'
   6 import 'core-js/es6/parse-int'
   7 import 'core-js/es6/parse-float'
   8 import 'core-js/es6/number'
   9 import 'core-js/es6/math'
  10 import 'core-js/es6/string'
  11 import 'core-js/es6/date'
  12 import 'core-js/es6/array'
  13 import 'core-js/es6/regexp'
  14 import 'core-js/es6/map'
  15 import 'core-js/es6/weak-map'
  16 import 'core-js/es6/set'
  17 // For google bot that uses Chrome 41 and does not understand fetch
  18 import 'whatwg-fetch'
  19
  20 import * as Channel from 'jschannel'
  21
  22 import { peertubeTranslate, ResultList, VideoDetails } from '../../../../shared'
  23 import { PeerTubeResolution } from '../player/definitions'
  24 import { VideoJSCaption } from '../../assets/player/peertube-videojs-typings'
  25 import { VideoCaption } from '../../../../shared/models/videos/caption/video-caption.model'
  26 import { PeertubePlayerManager, PeertubePlayerManagerOptions } from '../../assets/player/peertube-player-manager'
  27
  28 /**
  29  * Embed API exposes control of the embed player to the outside world via
  30  * JSChannels and window.postMessage
  31  */
  32 class PeerTubeEmbedApi {
  33   private channel: Channel.MessagingChannel
  34   private isReady = false
  35   private resolutions: PeerTubeResolution[] = null
  36
  37   constructor (private embed: PeerTubeEmbed) {
  38   }
  39
  40   initialize () {
  41     this.constructChannel()
  42     this.setupStateTracking()
  43
  44     // We're ready!
  45
  46     this.notifyReady()
  47   }
  48
  49   private get element () {
  50     return this.embed.videoElement
  51   }
  52
  53   private constructChannel () {
  54     let channel = Channel.build({ window: window.parent, origin: '*', scope: this.embed.scope })
  55
  56     channel.bind('play', (txn, params) => this.embed.player.play())
  57     channel.bind('pause', (txn, params) => this.embed.player.pause())
  58     channel.bind('seek', (txn, time) => this.embed.player.currentTime(time))
  59     channel.bind('setVolume', (txn, value) => this.embed.player.volume(value))
  60     channel.bind('getVolume', (txn, value) => this.embed.player.volume())
  61     channel.bind('isReady', (txn, params) => this.isReady)
  62     channel.bind('setResolution', (txn, resolutionId) => this.setResolution(resolutionId))
  63     channel.bind('getResolutions', (txn, params) => this.resolutions)
  64     channel.bind('setPlaybackRate', (txn, playbackRate) => this.embed.player.playbackRate(playbackRate))
  65     channel.bind('getPlaybackRate', (txn, params) => this.embed.player.playbackRate())
  66     channel.bind('getPlaybackRates', (txn, params) => this.embed.playerOptions.playbackRates)
  67
  68     this.channel = channel
  69   }
  70
  71   private setResolution (resolutionId: number) {
  72     if (resolutionId === -1 && this.embed.player.webtorrent().isAutoResolutionForbidden()) return
  73
  74     // Auto resolution
  75     if (resolutionId === -1) {
  76       this.embed.player.webtorrent().enableAutoResolution()
  77       return
  78     }
  79
  80     this.embed.player.webtorrent().disableAutoResolution()
  81     this.embed.player.webtorrent().updateResolution(resolutionId)
  82   }
  83
  84   /**
  85    * Let the host know that we're ready to go!
  86    */
  87   private notifyReady () {
  88     this.isReady = true
  89     this.channel.notify({ method: 'ready', params: true })
  90   }
  91
  92   private setupStateTracking () {
  93     let currentState: 'playing' | 'paused' | 'unstarted' = 'unstarted'
  94
  95     setInterval(() => {
  96       let position = this.element.currentTime
  97       let volume = this.element.volume
  98
  99       this.channel.notify({
 100         method: 'playbackStatusUpdate',
 101         params: {
 102           position,
 103           volume,
 104           playbackState: currentState
 105         }
 106       })
 107     }, 500)
 108
 109     this.element.addEventListener('play', ev => {
 110       currentState = 'playing'
 111       this.channel.notify({ method: 'playbackStatusChange', params: 'playing' })
 112     })
 113
 114     this.element.addEventListener('pause', ev => {
 115       currentState = 'paused'
 116       this.channel.notify({ method: 'playbackStatusChange', params: 'paused' })
 117     })
 118
 119     // PeerTube specific capabilities
 120
 121     if (this.embed.player.webtorrent) {
 122       this.embed.player.webtorrent().on('autoResolutionUpdate', () => this.loadWebTorrentResolutions())
 123       this.embed.player.webtorrent().on('videoFileUpdate', () => this.loadWebTorrentResolutions())
 124     }
 125   }
 126
 127   private loadWebTorrentResolutions () {
 128     let resolutions = []
 129     let currentResolutionId = this.embed.player.webtorrent().getCurrentResolutionId()
 130
 131     for (const videoFile of this.embed.player.webtorrent().videoFiles) {
 132       let label = videoFile.resolution.label
 133       if (videoFile.fps && videoFile.fps >= 50) {
 134         label += videoFile.fps
 135       }
 136
 137       resolutions.push({
 138         id: videoFile.resolution.id,
 139         label,
 140         src: videoFile.magnetUri,
 141         active: videoFile.resolution.id === currentResolutionId
 142       })
 143     }
 144
 145     this.resolutions = resolutions
 146     this.channel.notify({
 147       method: 'resolutionUpdate',
 148       params: this.resolutions
 149     })
 150   }
 151 }
 152
 153 class PeerTubeEmbed {
 154   videoElement: HTMLVideoElement
 155   player: any
 156   playerOptions: any
 157   api: PeerTubeEmbedApi = null
 158   autoplay: boolean
 159   controls: boolean
 160   muted: boolean
 161   loop: boolean
 162   subtitle: string
 163   enableApi = false
 164   startTime: number | string = 0
 165   scope = 'peertube'
 166
 167   static async main () {
 168     const videoContainerId = 'video-container'
 169     const embed = new PeerTubeEmbed(videoContainerId)
 170     await embed.init()
 171   }
 172
 173   constructor (private videoContainerId: string) {
 174     this.videoElement = document.getElementById(videoContainerId) as HTMLVideoElement
 175   }
 176
 177   getVideoUrl (id: string) {
 178     return window.location.origin + '/api/v1/videos/' + id
 179   }
 180
 181   loadVideoInfo (videoId: string): Promise<Response> {
 182     return fetch(this.getVideoUrl(videoId))
 183   }
 184
 185   loadVideoCaptions (videoId: string): Promise<Response> {
 186     return fetch(this.getVideoUrl(videoId) + '/captions')
 187   }
 188
 189   removeElement (element: HTMLElement) {
 190     element.parentElement.removeChild(element)
 191   }
 192
 193   displayError (text: string, translations?: { [ id: string ]: string }) {
 194     // Remove video element
 195     if (this.videoElement) this.removeElement(this.videoElement)
 196
 197     const translatedText = peertubeTranslate(text, translations)
 198     const translatedSorry = peertubeTranslate('Sorry', translations)
 199
 200     document.title = translatedSorry + ' - ' + translatedText
 201
 202     const errorBlock = document.getElementById('error-block')
 203     errorBlock.style.display = 'flex'
 204
 205     const errorTitle = document.getElementById('error-title')
 206     errorTitle.innerHTML = peertubeTranslate('Sorry', translations)
 207
 208     const errorText = document.getElementById('error-content')
 209     errorText.innerHTML = translatedText
 210   }
 211
 212   videoNotFound (translations?: { [ id: string ]: string }) {
 213     const text = 'This video does not exist.'
 214     this.displayError(text, translations)
 215   }
 216
 217   videoFetchError (translations?: { [ id: string ]: string }) {
 218     const text = 'We cannot fetch the video. Please try again later.'
 219     this.displayError(text, translations)
 220   }
 221
 222   getParamToggle (params: URLSearchParams, name: string, defaultValue?: boolean) {
 223     return params.has(name) ? (params.get(name) === '1' || params.get(name) === 'true') : defaultValue
 224   }
 225
 226   getParamString (params: URLSearchParams, name: string, defaultValue?: string) {
 227     return params.has(name) ? params.get(name) : defaultValue
 228   }
 229
 230   async init () {
 231     try {
 232       await this.initCore()
 233     } catch (e) {
 234       console.error(e)
 235     }
 236   }
 237
 238   private initializeApi () {
 239     if (!this.enableApi) return
 240
 241     this.api = new PeerTubeEmbedApi(this)
 242     this.api.initialize()
 243   }
 244
 245   private loadParams () {
 246     try {
 247       let params = new URL(window.location.toString()).searchParams
 248
 249       this.autoplay = this.getParamToggle(params, 'autoplay')
 250       this.controls = this.getParamToggle(params, 'controls')
 251       this.muted = this.getParamToggle(params, 'muted')
 252       this.loop = this.getParamToggle(params, 'loop')
 253       this.enableApi = this.getParamToggle(params, 'api', this.enableApi)
 254
 255       this.scope = this.getParamString(params, 'scope', this.scope)
 256       this.subtitle = this.getParamString(params, 'subtitle')
 257       this.startTime = this.getParamString(params, 'start')
 258     } catch (err) {
 259       console.error('Cannot get params from URL.', err)
 260     }
 261   }
 262
 263   private async initCore () {
 264     const urlParts = window.location.pathname.split('/')
 265     const videoId = urlParts[ urlParts.length - 1 ]
 266
 267     const [ serverTranslations, videoResponse, captionsResponse ] = await Promise.all([
 268       PeertubePlayerManager.getServerTranslations(window.location.origin, navigator.language),
 269       this.loadVideoInfo(videoId),
 270       this.loadVideoCaptions(videoId)
 271     ])
 272
 273     if (!videoResponse.ok) {
 274       if (videoResponse.status === 404) return this.videoNotFound(serverTranslations)
 275
 276       return this.videoFetchError(serverTranslations)
 277     }
 278
 279     const videoInfo: VideoDetails = await videoResponse.json()
 280     let videoCaptions: VideoJSCaption[] = []
 281     if (captionsResponse.ok) {
 282       const { data } = (await captionsResponse.json()) as ResultList<VideoCaption>
 283       videoCaptions = data.map(c => ({
 284         label: peertubeTranslate(c.language.label, serverTranslations),
 285         language: c.language.id,
 286         src: window.location.origin + c.captionPath
 287       }))
 288     }
 289
 290     this.loadParams()
 291
 292     const options: PeertubePlayerManagerOptions = {
 293       common: {
 294         autoplay: this.autoplay,
 295         controls: this.controls,
 296         muted: this.muted,
 297         loop: this.loop,
 298         captions: videoCaptions.length !== 0,
 299         startTime: this.startTime,
 300         subtitle: this.subtitle,
 301
 302         videoCaptions,
 303         inactivityTimeout: 1500,
 304         videoViewUrl: this.getVideoUrl(videoId) + '/views',
 305         playerElement: this.videoElement,
 306         videoDuration: videoInfo.duration,
 307         enableHotkeys: true,
 308         peertubeLink: true,
 309         poster: window.location.origin + videoInfo.previewPath,
 310         theaterMode: false,
 311
 312         serverUrl: window.location.origin,
 313         language: navigator.language,
 314         embedUrl: window.location.origin + videoInfo.embedPath
 315       },
 316
 317       webtorrent: {
 318         videoFiles: videoInfo.files
 319       }
 320
 321       // p2pMediaLoader: {
 322       //   // playlistUrl: 'https://akamai-axtest.akamaized.net/routes/lapd-v1-acceptance/www_c4/Manifest.m3u8'
 323       //   // playlistUrl: 'https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/bipbop_16x9_variant.m3u8'
 324       //   playlistUrl: 'https://cdn.theoplayer.com/video/elephants-dream/playlist.m3u8'
 325       // }
 326     }
 327
 328     this.player = await PeertubePlayerManager.initialize('webtorrent', options)
 329
 330     this.player.on('customError', (event: any, data: any) => this.handleError(data.err, serverTranslations))
 331
 332     window[ 'videojsPlayer' ] = this.player
 333
 334     if (this.controls) {
 335       this.player.dock({
 336         title: videoInfo.name,
 337         description: this.player.localize('Uses P2P, others may know your IP is downloading this video.')
 338       })
 339     }
 340
 341     this.initializeApi()
 342   }
 343
 344   private handleError (err: Error, translations?: { [ id: string ]: string }) {
 345     if (err.message.indexOf('from xs param') !== -1) {
 346       this.player.dispose()
 347       this.videoElement = null
 348       this.displayError('This video is not available because the remote instance is not responding.', translations)
 349       return
 350     }
 351   }
 352 }
 353
 354 PeerTubeEmbed.main()
 355   .catch(err => console.error('Cannot init embed.', err))