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 vjs from 'video.js'
  21 import * as Channel from 'jschannel'
  22
  23 import { VideoDetails } from '../../../../shared'
  24 import { addContextMenu, getVideojsOptions, loadLocale } from '../../assets/player/peertube-player'
  25 import { PeerTubeResolution } from '../player/definitions';
  26
  27 /**
  28  * Embed API exposes control of the embed player to the outside world via
  29  * JSChannels and window.postMessage
  30  */
  31 class PeerTubeEmbedApi {
  32   constructor(
  33     private embed : PeerTubeEmbed
  34   ) {
  35   }
  36
  37   private channel : Channel.MessagingChannel
  38   private isReady = false
  39   private resolutions : PeerTubeResolution[] = null
  40
  41   initialize() {
  42     this.constructChannel()
  43     this.setupStateTracking()
  44
  45     // We're ready!
  46
  47     this.notifyReady()
  48   }
  49
  50   private get element() {
  51     return this.embed.videoElement
  52   }
  53
  54   private constructChannel() {
  55     let channel = Channel.build({ window: window.parent, origin: '*', scope: this.embed.scope })
  56
  57     channel.bind('play', (txn, params) => this.embed.player.play())
  58     channel.bind('pause', (txn, params) => this.embed.player.pause())
  59     channel.bind('seek', (txn, time) => this.embed.player.currentTime(time))
  60     channel.bind('setVolume', (txn, value) => this.embed.player.volume(value))
  61     channel.bind('getVolume', (txn, value) => this.embed.player.volume())
  62     channel.bind('isReady', (txn, params) => this.isReady)
  63     channel.bind('setResolution', (txn, resolutionId) => this.setResolution(resolutionId))
  64     channel.bind('getResolutions', (txn, params) => this.resolutions)
  65     channel.bind('setPlaybackRate', (txn, playbackRate) => this.embed.player.playbackRate(playbackRate))
  66     channel.bind('getPlaybackRate', (txn, params) => this.embed.player.playbackRate())
  67     channel.bind('getPlaybackRates', (txn, params) => this.embed.playerOptions.playbackRates)
  68
  69     this.channel = channel
  70   }
  71
  72   private setResolution(resolutionId : number) {
  73     if (resolutionId === -1 && this.embed.player.peertube().isAutoResolutionForbidden())
  74       return
  75
  76     // Auto resolution
  77     if (resolutionId === -1) {
  78       this.embed.player.peertube().enableAutoResolution()
  79       return
  80     }
  81
  82     this.embed.player.peertube().disableAutoResolution()
  83     this.embed.player.peertube().updateResolution(resolutionId)
  84   }
  85
  86   /**
  87    * Let the host know that we're ready to go!
  88    */
  89   private notifyReady() {
  90     this.isReady = true
  91     this.channel.notify({ method: 'ready', params: true })
  92   }
  93
  94   private setupStateTracking() {
  95
  96     let currentState : 'playing' | 'paused' | 'unstarted' = 'unstarted'
  97
  98     setInterval(() => {
  99       let position = this.element.currentTime
 100       let volume = this.element.volume
 101
 102       this.channel.notify({
 103         method: 'playbackStatusUpdate',
 104         params: {
 105           position,
 106           volume,
 107           playbackState: currentState,
 108         }
 109       })
 110     }, 500)
 111
 112     this.element.addEventListener('play', ev => {
 113       currentState = 'playing'
 114       this.channel.notify({ method: 'playbackStatusChange', params: 'playing' })
 115     })
 116
 117     this.element.addEventListener('pause', ev => {
 118       currentState = 'paused'
 119       this.channel.notify({ method: 'playbackStatusChange', params: 'paused' })
 120     })
 121
 122     // PeerTube specific capabilities
 123
 124     this.embed.player.peertube().on('autoResolutionUpdate', () => this.loadResolutions())
 125     this.embed.player.peertube().on('videoFileUpdate', () => this.loadResolutions())
 126   }
 127
 128   private loadResolutions() {
 129     let resolutions = []
 130     let currentResolutionId = this.embed.player.peertube().getCurrentResolutionId()
 131
 132     for (const videoFile of this.embed.player.peertube().videoFiles) {
 133       let label = videoFile.resolution.label
 134       if (videoFile.fps && videoFile.fps >= 50) {
 135         label += videoFile.fps
 136       }
 137
 138       resolutions.push({
 139         id: videoFile.resolution.id,
 140         label,
 141         src: videoFile.magnetUri,
 142         active: videoFile.resolution.id === currentResolutionId
 143       })
 144     }
 145
 146     this.resolutions = resolutions
 147     this.channel.notify({
 148       method: 'resolutionUpdate',
 149       params: this.resolutions
 150     })
 151   }
 152 }
 153
 154 class PeerTubeEmbed {
 155   constructor(
 156     private videoContainerId : string
 157   ) {
 158     this.videoElement = document.getElementById(videoContainerId) as HTMLVideoElement
 159   }
 160
 161   videoElement : HTMLVideoElement
 162   player : any
 163   playerOptions : any
 164   api : PeerTubeEmbedApi = null
 165   autoplay : boolean = false
 166   controls : boolean = true
 167   muted : boolean = false
 168   loop : boolean = false
 169   enableApi : boolean = false
 170   startTime : number = 0
 171   scope : string = 'peertube'
 172
 173   static async main() {
 174     const videoContainerId = 'video-container'
 175     const embed = new PeerTubeEmbed(videoContainerId)
 176     await embed.init()
 177   }
 178
 179   getVideoUrl (id: string) {
 180     return window.location.origin + '/api/v1/videos/' + id
 181   }
 182
 183   loadVideoInfo (videoId: string): Promise<Response> {
 184     return fetch(this.getVideoUrl(videoId))
 185   }
 186
 187   removeElement (element: HTMLElement) {
 188     element.parentElement.removeChild(element)
 189   }
 190
 191   displayError (videoElement: HTMLVideoElement, text: string) {
 192     // Remove video element
 193     this.removeElement(videoElement)
 194
 195     document.title = 'Sorry - ' + text
 196
 197     const errorBlock = document.getElementById('error-block')
 198     errorBlock.style.display = 'flex'
 199
 200     const errorText = document.getElementById('error-content')
 201     errorText.innerHTML = text
 202   }
 203
 204   videoNotFound (videoElement: HTMLVideoElement) {
 205     const text = 'This video does not exist.'
 206     this.displayError(videoElement, text)
 207   }
 208
 209   videoFetchError (videoElement: HTMLVideoElement) {
 210     const text = 'We cannot fetch the video. Please try again later.'
 211     this.displayError(videoElement, text)
 212   }
 213
 214   getParamToggle (params: URLSearchParams, name: string, defaultValue: boolean) {
 215     return params.has(name) ? (params.get(name) === '1' || params.get(name) === 'true') : defaultValue
 216   }
 217
 218   getParamString (params: URLSearchParams, name: string, defaultValue: string) {
 219     return params.has(name) ? params.get(name) : defaultValue
 220   }
 221
 222   private initializeApi() {
 223     if (!this.enableApi)
 224       return
 225
 226     this.api = new PeerTubeEmbedApi(this)
 227     this.api.initialize()
 228   }
 229
 230   async init() {
 231     try {
 232       await this.initCore()
 233     } catch (e) {
 234       console.error(e)
 235     }
 236   }
 237
 238   private loadParams() {
 239     try {
 240       let params = new URL(window.location.toString()).searchParams
 241
 242       this.autoplay = this.getParamToggle(params, 'autoplay', this.autoplay)
 243       this.controls = this.getParamToggle(params, 'controls', this.controls)
 244       this.muted = this.getParamToggle(params, 'muted', this.muted)
 245       this.loop = this.getParamToggle(params, 'loop', this.loop)
 246       this.enableApi = this.getParamToggle(params, 'api', this.enableApi)
 247       this.scope = this.getParamString(params, 'scope', this.scope)
 248
 249       const startTimeParamString = params.get('start')
 250       const startTimeParamNumber = parseInt(startTimeParamString, 10)
 251       if (isNaN(startTimeParamNumber) === false)
 252         this.startTime = startTimeParamNumber
 253     } catch (err) {
 254       console.error('Cannot get params from URL.', err)
 255     }
 256   }
 257
 258   private async initCore() {
 259     const urlParts = window.location.href.split('/')
 260     const lastPart = urlParts[urlParts.length - 1]
 261     const videoId = lastPart.indexOf('?') === -1 ? lastPart : lastPart.split('?')[0]
 262
 263     await loadLocale(window.location.origin, vjs, navigator.language)
 264     let response = await this.loadVideoInfo(videoId)
 265
 266     if (!response.ok) {
 267       if (response.status === 404)
 268         return this.videoNotFound(this.videoElement)
 269
 270       return this.videoFetchError(this.videoElement)
 271     }
 272
 273     const videoInfo: VideoDetails = await response.json()
 274
 275     this.loadParams()
 276
 277     const videojsOptions = getVideojsOptions({
 278       autoplay: this.autoplay,
 279       controls: this.controls,
 280       muted: this.muted,
 281       loop: this.loop,
 282       startTime : this.startTime,
 283
 284       inactivityTimeout: 1500,
 285       videoViewUrl: this.getVideoUrl(videoId) + '/views',
 286       playerElement: this.videoElement,
 287       videoFiles: videoInfo.files,
 288       videoDuration: videoInfo.duration,
 289       enableHotkeys: true,
 290       peertubeLink: true,
 291       poster: window.location.origin + videoInfo.previewPath,
 292       theaterMode: false
 293     })
 294
 295     this.playerOptions = videojsOptions
 296     this.player = vjs(this.videoContainerId, videojsOptions, () => {
 297
 298       window['videojsPlayer'] = this.player
 299
 300       if (this.controls) {
 301         (this.player as any).dock({
 302           title: videoInfo.name,
 303           description: this.player.localize('Uses P2P, others may know your IP is downloading this video.')
 304         })
 305       }
 306       addContextMenu(this.player, window.location.origin + videoInfo.embedPath)
 307       this.initializeApi()
 308     })
 309   }
 310 }
 311
 312 PeerTubeEmbed.main()