client/src/app/+videos/+video-watch/video-watch.component.ts

   1 import { Hotkey, HotkeysService } from 'angular2-hotkeys'
   2 import { forkJoin, map, Observable, of, Subscription, switchMap } from 'rxjs'
   3 import { VideoJsPlayer } from 'video.js'
   4 import { PlatformLocation } from '@angular/common'
   5 import { Component, ElementRef, Inject, LOCALE_ID, NgZone, OnDestroy, OnInit, ViewChild } from '@angular/core'
   6 import { ActivatedRoute, Router } from '@angular/router'
   7 import {
   8   AuthService,
   9   AuthUser,
  10   ConfirmService,
  11   MetaService,
  12   Notifier,
  13   PeerTubeSocket,
  14   PluginService,
  15   RestExtractor,
  16   ScreenService,
  17   ServerService,
  18   User,
  19   UserService
  20 } from '@app/core'
  21 import { HooksService } from '@app/core/plugins/hooks.service'
  22 import { isXPercentInViewport, scrollToTop } from '@app/helpers'
  23 import { Video, VideoCaptionService, VideoDetails, VideoService } from '@app/shared/shared-main'
  24 import { SubscribeButtonComponent } from '@app/shared/shared-user-subscription'
  25 import { LiveVideoService } from '@app/shared/shared-video-live'
  26 import { VideoPlaylist, VideoPlaylistService } from '@app/shared/shared-video-playlist'
  27 import { logger } from '@root-helpers/logger'
  28 import { isP2PEnabled } from '@root-helpers/video'
  29 import { timeToInt } from '@shared/core-utils'
  30 import {
  31   HTMLServerConfig,
  32   HttpStatusCode,
  33   LiveVideo,
  34   PeerTubeProblemDocument,
  35   ServerErrorCode,
  36   VideoCaption,
  37   VideoPrivacy,
  38   VideoState
  39 } from '@shared/models'
  40 import {
  41   CustomizationOptions,
  42   P2PMediaLoaderOptions,
  43   PeertubePlayerManager,
  44   PeertubePlayerManagerOptions,
  45   PlayerMode,
  46   videojs
  47 } from '../../../assets/player'
  48 import { cleanupVideoWatch, getStoredTheater, getStoredVideoWatchHistory } from '../../../assets/player/peertube-player-local-storage'
  49 import { environment } from '../../../environments/environment'
  50 import { VideoWatchPlaylistComponent } from './shared'
  51
  52 type URLOptions = CustomizationOptions & { playerMode: PlayerMode }
  53
  54 @Component({
  55   selector: 'my-video-watch',
  56   templateUrl: './video-watch.component.html',
  57   styleUrls: [ './video-watch.component.scss' ]
  58 })
  59 export class VideoWatchComponent implements OnInit, OnDestroy {
  60   @ViewChild('videoWatchPlaylist', { static: true }) videoWatchPlaylist: VideoWatchPlaylistComponent
  61   @ViewChild('subscribeButton') subscribeButton: SubscribeButtonComponent
  62
  63   player: VideoJsPlayer
  64   playerElement: HTMLVideoElement
  65   playerPlaceholderImgSrc: string
  66   theaterEnabled = false
  67
  68   video: VideoDetails = null
  69   videoCaptions: VideoCaption[] = []
  70   liveVideo: LiveVideo
  71
  72   playlistPosition: number
  73   playlist: VideoPlaylist = null
  74
  75   remoteServerDown = false
  76   noPlaylistVideoFound = false
  77
  78   private nextVideoUUID = ''
  79   private nextVideoTitle = ''
  80
  81   private currentTime: number
  82
  83   private paramsSub: Subscription
  84   private queryParamsSub: Subscription
  85   private configSub: Subscription
  86   private liveVideosSub: Subscription
  87
  88   private serverConfig: HTMLServerConfig
  89
  90   private hotkeys: Hotkey[] = []
  91
  92   constructor (
  93     private elementRef: ElementRef,
  94     private route: ActivatedRoute,
  95     private router: Router,
  96     private videoService: VideoService,
  97     private playlistService: VideoPlaylistService,
  98     private liveVideoService: LiveVideoService,
  99     private confirmService: ConfirmService,
 100     private metaService: MetaService,
 101     private authService: AuthService,
 102     private userService: UserService,
 103     private serverService: ServerService,
 104     private restExtractor: RestExtractor,
 105     private notifier: Notifier,
 106     private zone: NgZone,
 107     private videoCaptionService: VideoCaptionService,
 108     private hotkeysService: HotkeysService,
 109     private hooks: HooksService,
 110     private pluginService: PluginService,
 111     private peertubeSocket: PeerTubeSocket,
 112     private screenService: ScreenService,
 113     private location: PlatformLocation,
 114     @Inject(LOCALE_ID) private localeId: string
 115   ) { }
 116
 117   get user () {
 118     return this.authService.getUser()
 119   }
 120
 121   get anonymousUser () {
 122     return this.userService.getAnonymousUser()
 123   }
 124
 125   ngOnInit () {
 126     this.serverConfig = this.serverService.getHTMLConfig()
 127
 128     PeertubePlayerManager.initState()
 129
 130     this.loadRouteParams()
 131     this.loadRouteQuery()
 132
 133     this.initHotkeys()
 134
 135     this.theaterEnabled = getStoredTheater()
 136
 137     this.hooks.runAction('action:video-watch.init', 'video-watch')
 138
 139     setTimeout(cleanupVideoWatch, 1500) // Run in timeout to ensure we're not blocking the UI
 140   }
 141
 142   ngOnDestroy () {
 143     this.flushPlayer()
 144
 145     // Unsubscribe subscriptions
 146     if (this.paramsSub) this.paramsSub.unsubscribe()
 147     if (this.queryParamsSub) this.queryParamsSub.unsubscribe()
 148     if (this.configSub) this.configSub.unsubscribe()
 149     if (this.liveVideosSub) this.liveVideosSub.unsubscribe()
 150
 151     // Unbind hotkeys
 152     this.hotkeysService.remove(this.hotkeys)
 153   }
 154
 155   getCurrentTime () {
 156     return this.currentTime
 157   }
 158
 159   getCurrentPlaylistPosition () {
 160     return this.videoWatchPlaylist.currentPlaylistPosition
 161   }
 162
 163   onRecommendations (videos: Video[]) {
 164     if (videos.length === 0) return
 165
 166     // The recommended videos's first element should be the next video
 167     const video = videos[0]
 168     this.nextVideoUUID = video.uuid
 169     this.nextVideoTitle = video.name
 170   }
 171
 172   handleTimestampClicked (timestamp: number) {
 173     if (!this.player || this.video.isLive) return
 174
 175     this.player.currentTime(timestamp)
 176     scrollToTop()
 177   }
 178
 179   onPlaylistVideoFound (videoId: string) {
 180     this.loadVideo(videoId)
 181   }
 182
 183   onPlaylistNoVideoFound () {
 184     this.noPlaylistVideoFound = true
 185   }
 186
 187   isUserLoggedIn () {
 188     return this.authService.isLoggedIn()
 189   }
 190
 191   isVideoBlur (video: Video) {
 192     return video.isVideoNSFWForUser(this.user, this.serverConfig)
 193   }
 194
 195   isChannelDisplayNameGeneric () {
 196     const genericChannelDisplayName = [
 197       `Main ${this.video.channel.ownerAccount.name} channel`,
 198       `Default ${this.video.channel.ownerAccount.name} channel`
 199     ]
 200
 201     return genericChannelDisplayName.includes(this.video.channel.displayName)
 202   }
 203
 204   displayOtherVideosAsRow () {
 205     // Use the same value as in the SASS file
 206     return this.screenService.getWindowInnerWidth() <= 1100
 207   }
 208
 209   private loadRouteParams () {
 210     this.paramsSub = this.route.params.subscribe(routeParams => {
 211       const videoId = routeParams['videoId']
 212       if (videoId) return this.loadVideo(videoId)
 213
 214       const playlistId = routeParams['playlistId']
 215       if (playlistId) return this.loadPlaylist(playlistId)
 216     })
 217   }
 218
 219   private loadRouteQuery () {
 220     this.queryParamsSub = this.route.queryParams.subscribe(queryParams => {
 221       // Handle the ?playlistPosition
 222       const positionParam = queryParams['playlistPosition'] ?? 1
 223
 224       this.playlistPosition = positionParam === 'last'
 225         ? -1 // Handle the "last" index
 226         : parseInt(positionParam + '', 10)
 227
 228       if (isNaN(this.playlistPosition)) {
 229         logger.error(`playlistPosition query param '${positionParam}' was parsed as NaN, defaulting to 1.`)
 230         this.playlistPosition = 1
 231       }
 232
 233       this.videoWatchPlaylist.updatePlaylistIndex(this.playlistPosition)
 234
 235       const start = queryParams['start']
 236       if (this.player && start) this.player.currentTime(parseInt(start, 10))
 237     })
 238   }
 239
 240   private loadVideo (videoId: string) {
 241     if (this.isSameElement(this.video, videoId)) return
 242
 243     if (this.player) this.player.pause()
 244
 245     this.video = undefined
 246
 247     const videoObs = this.hooks.wrapObsFun(
 248       this.videoService.getVideo.bind(this.videoService),
 249       { videoId },
 250       'video-watch',
 251       'filter:api.video-watch.video.get.params',
 252       'filter:api.video-watch.video.get.result'
 253     )
 254
 255     const videoAndLiveObs: Observable<{ video: VideoDetails, live?: LiveVideo }> = videoObs.pipe(
 256       switchMap(video => {
 257         if (!video.isLive) return of({ video })
 258
 259         return this.liveVideoService.getVideoLive(video.uuid)
 260           .pipe(map(live => ({ live, video })))
 261       })
 262     )
 263
 264     forkJoin([
 265       videoAndLiveObs,
 266       this.videoCaptionService.listCaptions(videoId),
 267       this.userService.getAnonymousOrLoggedUser()
 268     ]).subscribe({
 269       next: ([ { video, live }, captionsResult, loggedInOrAnonymousUser ]) => {
 270         const queryParams = this.route.snapshot.queryParams
 271
 272         const urlOptions = {
 273           resume: queryParams.resume,
 274
 275           startTime: queryParams.start,
 276           stopTime: queryParams.stop,
 277
 278           muted: queryParams.muted,
 279           loop: queryParams.loop,
 280           subtitle: queryParams.subtitle,
 281
 282           playerMode: queryParams.mode,
 283           peertubeLink: false
 284         }
 285
 286         this.onVideoFetched({ video, live, videoCaptions: captionsResult.data, loggedInOrAnonymousUser, urlOptions })
 287             .catch(err => this.handleGlobalError(err))
 288       },
 289
 290       error: err => this.handleRequestError(err)
 291     })
 292   }
 293
 294   private loadPlaylist (playlistId: string) {
 295     if (this.isSameElement(this.playlist, playlistId)) return
 296
 297     this.noPlaylistVideoFound = false
 298
 299     this.playlistService.getVideoPlaylist(playlistId)
 300       .subscribe({
 301         next: playlist => {
 302           this.playlist = playlist
 303
 304           this.videoWatchPlaylist.loadPlaylistElements(playlist, !this.playlistPosition, this.playlistPosition)
 305         },
 306
 307         error: err => this.handleRequestError(err)
 308       })
 309   }
 310
 311   private isSameElement (element: VideoDetails | VideoPlaylist, newId: string) {
 312     if (!element) return false
 313
 314     return (element.id + '') === newId || element.uuid === newId || element.shortUUID === newId
 315   }
 316
 317   private async handleRequestError (err: any) {
 318     const errorBody = err.body as PeerTubeProblemDocument
 319
 320     if (errorBody?.code === ServerErrorCode.DOES_NOT_RESPECT_FOLLOW_CONSTRAINTS && errorBody.originUrl) {
 321       const originUrl = errorBody.originUrl + (window.location.search ?? '')
 322
 323       const res = await this.confirmService.confirm(
 324         // eslint-disable-next-line max-len
 325         $localize`This video is not available on this instance. Do you want to be redirected on the origin instance: <a href="${originUrl}">${originUrl}</a>?`,
 326         $localize`Redirection`
 327       )
 328
 329       if (res === true) return window.location.href = originUrl
 330     }
 331
 332     // If 400, 403 or 404, the video is private or blocked so redirect to 404
 333     return this.restExtractor.redirectTo404IfNotFound(err, 'video', [
 334       HttpStatusCode.BAD_REQUEST_400,
 335       HttpStatusCode.FORBIDDEN_403,
 336       HttpStatusCode.NOT_FOUND_404
 337     ])
 338   }
 339
 340   private handleGlobalError (err: any) {
 341     const errorMessage: string = typeof err === 'string' ? err : err.message
 342     if (!errorMessage) return
 343
 344     // Display a message in the video player instead of a notification
 345     if (errorMessage.includes('from xs param')) {
 346       this.flushPlayer()
 347       this.remoteServerDown = true
 348
 349       return
 350     }
 351
 352     this.notifier.error(errorMessage)
 353   }
 354
 355   private async onVideoFetched (options: {
 356     video: VideoDetails
 357     live: LiveVideo
 358     videoCaptions: VideoCaption[]
 359     urlOptions: URLOptions
 360     loggedInOrAnonymousUser: User
 361   }) {
 362     const { video, live, videoCaptions, urlOptions, loggedInOrAnonymousUser } = options
 363
 364     this.subscribeToLiveEventsIfNeeded(this.video, video)
 365
 366     this.video = video
 367     this.videoCaptions = videoCaptions
 368     this.liveVideo = live
 369
 370     // Re init attributes
 371     this.playerPlaceholderImgSrc = undefined
 372     this.remoteServerDown = false
 373     this.currentTime = undefined
 374
 375     if (this.isVideoBlur(this.video)) {
 376       const res = await this.confirmService.confirm(
 377         $localize`This video contains mature or explicit content. Are you sure you want to watch it?`,
 378         $localize`Mature or explicit content`
 379       )
 380       if (res === false) return this.location.back()
 381     }
 382
 383     this.buildPlayer(urlOptions, loggedInOrAnonymousUser)
 384       .catch(err => logger.error('Cannot build the player', err))
 385
 386     this.setOpenGraphTags()
 387
 388     const hookOptions = {
 389       videojs,
 390       video: this.video,
 391       playlist: this.playlist
 392     }
 393     this.hooks.runAction('action:video-watch.video.loaded', 'video-watch', hookOptions)
 394   }
 395
 396   private async buildPlayer (urlOptions: URLOptions, loggedInOrAnonymousUser: User) {
 397     // Flush old player if needed
 398     this.flushPlayer()
 399
 400     const videoState = this.video.state.id
 401     if (videoState === VideoState.LIVE_ENDED || videoState === VideoState.WAITING_FOR_LIVE) {
 402       this.playerPlaceholderImgSrc = this.video.previewPath
 403       return
 404     }
 405
 406     // Build video element, because videojs removes it on dispose
 407     const playerElementWrapper = this.elementRef.nativeElement.querySelector('#videojs-wrapper')
 408     this.playerElement = document.createElement('video')
 409     this.playerElement.className = 'video-js vjs-peertube-skin'
 410     this.playerElement.setAttribute('playsinline', 'true')
 411     playerElementWrapper.appendChild(this.playerElement)
 412
 413     const params = {
 414       video: this.video,
 415       videoCaptions: this.videoCaptions,
 416       liveVideo: this.liveVideo,
 417       urlOptions,
 418       loggedInOrAnonymousUser,
 419       user: this.user
 420     }
 421     const { playerMode, playerOptions } = await this.hooks.wrapFun(
 422       this.buildPlayerManagerOptions.bind(this),
 423       params,
 424       'video-watch',
 425       'filter:internal.video-watch.player.build-options.params',
 426       'filter:internal.video-watch.player.build-options.result'
 427     )
 428
 429     this.zone.runOutsideAngular(async () => {
 430       this.player = await PeertubePlayerManager.initialize(playerMode, playerOptions, player => this.player = player)
 431
 432       this.player.on('customError', (_e, data: any) => {
 433         this.zone.run(() => this.handleGlobalError(data.err))
 434       })
 435
 436       this.player.on('timeupdate', () => {
 437         // Don't need to trigger angular change for this variable, that is sent to children components on click
 438         this.currentTime = Math.floor(this.player.currentTime())
 439       })
 440
 441       /**
 442        * condition: true to make the upnext functionality trigger, false to disable the upnext functionality
 443        *            go to the next video in 'condition()' if you don't want of the timer.
 444        * next: function triggered at the end of the timer.
 445        * suspended: function used at each click of the timer checking if we need to reset progress
 446        *            and wait until suspended becomes truthy again.
 447        */
 448       this.player.upnext({
 449         timeout: 5000, // 5s
 450
 451         headText: $localize`Up Next`,
 452         cancelText: $localize`Cancel`,
 453         suspendedText: $localize`Autoplay is suspended`,
 454
 455         getTitle: () => this.nextVideoTitle,
 456
 457         next: () => this.zone.run(() => this.playNextVideoInAngularZone()),
 458         condition: () => {
 459           if (!this.playlist) return this.isAutoPlayNext()
 460
 461           // Don't wait timeout to play the next playlist video
 462           if (this.isPlaylistAutoPlayNext()) {
 463             this.playNextVideoInAngularZone()
 464             return undefined
 465           }
 466
 467           return false
 468         },
 469
 470         suspended: () => {
 471           return (
 472             !isXPercentInViewport(this.player.el() as HTMLElement, 80) ||
 473             !document.getElementById('content').contains(document.activeElement)
 474           )
 475         }
 476       })
 477
 478       this.player.one('stopped', () => {
 479         if (this.playlist && this.isPlaylistAutoPlayNext()) {
 480           this.playNextVideoInAngularZone()
 481         }
 482       })
 483
 484       this.player.one('ended', () => {
 485         if (this.video.isLive) {
 486           this.zone.run(() => this.video.state.id = VideoState.LIVE_ENDED)
 487         }
 488       })
 489
 490       this.player.on('theaterChange', (_: any, enabled: boolean) => {
 491         this.zone.run(() => this.theaterEnabled = enabled)
 492       })
 493
 494       this.hooks.runAction('action:video-watch.player.loaded', 'video-watch', {
 495         player: this.player,
 496         playlist: this.playlist,
 497         playlistPosition: this.playlistPosition,
 498         videojs,
 499         video: this.video
 500       })
 501     })
 502   }
 503
 504   private hasNextVideo () {
 505     if (this.playlist) {
 506       return this.videoWatchPlaylist.hasNextVideo()
 507     }
 508
 509     return true
 510   }
 511
 512   private playNextVideoInAngularZone () {
 513     if (this.playlist) {
 514       this.zone.run(() => this.videoWatchPlaylist.navigateToNextPlaylistVideo())
 515       return
 516     }
 517
 518     if (this.nextVideoUUID) {
 519       this.router.navigate([ '/w', this.nextVideoUUID ])
 520     }
 521   }
 522
 523   private isAutoplay () {
 524     // We'll jump to the thread id, so do not play the video
 525     if (this.route.snapshot.params['threadId']) return false
 526
 527     // Otherwise true by default
 528     if (!this.user) return true
 529
 530     // Be sure the autoPlay is set to false
 531     return this.user.autoPlayVideo !== false
 532   }
 533
 534   private isAutoPlayNext () {
 535     return (
 536       (this.user?.autoPlayNextVideo) ||
 537       this.anonymousUser.autoPlayNextVideo
 538     )
 539   }
 540
 541   private isPlaylistAutoPlayNext () {
 542     return (
 543       (this.user?.autoPlayNextVideoPlaylist) ||
 544       this.anonymousUser.autoPlayNextVideoPlaylist
 545     )
 546   }
 547
 548   private flushPlayer () {
 549     // Remove player if it exists
 550     if (!this.player) return
 551
 552     try {
 553       this.player.dispose()
 554       this.player = undefined
 555     } catch (err) {
 556       logger.error('Cannot dispose player.', err)
 557     }
 558   }
 559
 560   private buildPlayerManagerOptions (params: {
 561     video: VideoDetails
 562     liveVideo: LiveVideo
 563     videoCaptions: VideoCaption[]
 564     urlOptions: CustomizationOptions & { playerMode: PlayerMode }
 565     loggedInOrAnonymousUser: User
 566     user?: AuthUser // Keep for plugins
 567   }) {
 568     const { video, liveVideo, videoCaptions, urlOptions, loggedInOrAnonymousUser } = params
 569
 570     const getStartTime = () => {
 571       const byUrl = urlOptions.startTime !== undefined
 572       const byHistory = video.userHistory && (!this.playlist || urlOptions.resume !== undefined)
 573       const byLocalStorage = getStoredVideoWatchHistory(video.uuid)
 574
 575       if (byUrl) return timeToInt(urlOptions.startTime)
 576       if (byHistory) return video.userHistory.currentTime
 577       if (byLocalStorage) return byLocalStorage.duration
 578
 579       return 0
 580     }
 581
 582     let startTime = getStartTime()
 583
 584     // If we are at the end of the video, reset the timer
 585     if (video.duration - startTime <= 1) startTime = 0
 586
 587     const playerCaptions = videoCaptions.map(c => ({
 588       label: c.language.label,
 589       language: c.language.id,
 590       src: environment.apiUrl + c.captionPath
 591     }))
 592
 593     const liveOptions = video.isLive
 594       ? { latencyMode: liveVideo.latencyMode }
 595       : undefined
 596
 597     const options: PeertubePlayerManagerOptions = {
 598       common: {
 599         autoplay: this.isAutoplay(),
 600         p2pEnabled: isP2PEnabled(video, this.serverConfig, loggedInOrAnonymousUser.p2pEnabled),
 601
 602         hasNextVideo: () => this.hasNextVideo(),
 603         nextVideo: () => this.playNextVideoInAngularZone(),
 604
 605         playerElement: this.playerElement,
 606         onPlayerElementChange: (element: HTMLVideoElement) => this.playerElement = element,
 607
 608         videoDuration: video.duration,
 609         enableHotkeys: true,
 610         inactivityTimeout: 2500,
 611         poster: video.previewUrl,
 612
 613         startTime,
 614         stopTime: urlOptions.stopTime,
 615         controlBar: urlOptions.controlBar,
 616         controls: urlOptions.controls,
 617         muted: urlOptions.muted,
 618         loop: urlOptions.loop,
 619         subtitle: urlOptions.subtitle,
 620
 621         peertubeLink: urlOptions.peertubeLink,
 622
 623         theaterButton: true,
 624         captions: videoCaptions.length !== 0,
 625
 626         videoViewUrl: video.privacy.id !== VideoPrivacy.PRIVATE
 627           ? this.videoService.getVideoViewUrl(video.uuid)
 628           : null,
 629         authorizationHeader: this.authService.getRequestHeaderValue(),
 630
 631         embedUrl: video.embedUrl,
 632         embedTitle: video.name,
 633         instanceName: this.serverConfig.instance.name,
 634
 635         isLive: video.isLive,
 636         liveOptions,
 637
 638         language: this.localeId,
 639
 640         serverUrl: environment.apiUrl,
 641
 642         videoCaptions: playerCaptions,
 643
 644         videoShortUUID: video.shortUUID,
 645         videoUUID: video.uuid,
 646
 647         errorNotifier: (message: string) => this.notifier.error(message)
 648       },
 649
 650       webtorrent: {
 651         videoFiles: video.files
 652       },
 653
 654       pluginsManager: this.pluginService.getPluginsManager()
 655     }
 656
 657     // Only set this if we're in a playlist
 658     if (this.playlist) {
 659       options.common.hasPreviousVideo = () => this.videoWatchPlaylist.hasPreviousVideo()
 660
 661       options.common.previousVideo = () => {
 662         this.zone.run(() => this.videoWatchPlaylist.navigateToPreviousPlaylistVideo())
 663       }
 664     }
 665
 666     let mode: PlayerMode
 667
 668     if (urlOptions.playerMode) {
 669       if (urlOptions.playerMode === 'p2p-media-loader') mode = 'p2p-media-loader'
 670       else mode = 'webtorrent'
 671     } else {
 672       if (video.hasHlsPlaylist()) mode = 'p2p-media-loader'
 673       else mode = 'webtorrent'
 674     }
 675
 676     // p2p-media-loader needs TextEncoder, fallback on WebTorrent if not available
 677     if (typeof TextEncoder === 'undefined') {
 678       mode = 'webtorrent'
 679     }
 680
 681     if (mode === 'p2p-media-loader') {
 682       const hlsPlaylist = video.getHlsPlaylist()
 683
 684       const p2pMediaLoader = {
 685         playlistUrl: hlsPlaylist.playlistUrl,
 686         segmentsSha256Url: hlsPlaylist.segmentsSha256Url,
 687         redundancyBaseUrls: hlsPlaylist.redundancies.map(r => r.baseUrl),
 688         trackerAnnounce: video.trackerUrls,
 689         videoFiles: hlsPlaylist.files
 690       } as P2PMediaLoaderOptions
 691
 692       Object.assign(options, { p2pMediaLoader })
 693     }
 694
 695     return { playerMode: mode, playerOptions: options }
 696   }
 697
 698   private async subscribeToLiveEventsIfNeeded (oldVideo: VideoDetails, newVideo: VideoDetails) {
 699     if (!this.liveVideosSub) {
 700       this.liveVideosSub = this.buildLiveEventsSubscription()
 701     }
 702
 703     if (oldVideo && oldVideo.id !== newVideo.id) {
 704       this.peertubeSocket.unsubscribeLiveVideos(oldVideo.id)
 705     }
 706
 707     if (!newVideo.isLive) return
 708
 709     await this.peertubeSocket.subscribeToLiveVideosSocket(newVideo.id)
 710   }
 711
 712   private buildLiveEventsSubscription () {
 713     return this.peertubeSocket.getLiveVideosObservable()
 714       .subscribe(({ type, payload }) => {
 715         if (type === 'state-change') return this.handleLiveStateChange(payload.state)
 716         if (type === 'views-change') return this.handleLiveViewsChange(payload.viewers)
 717       })
 718   }
 719
 720   private handleLiveStateChange (newState: VideoState) {
 721     if (newState !== VideoState.PUBLISHED) return
 722
 723     logger.info('Loading video after live update.')
 724
 725     const videoUUID = this.video.uuid
 726
 727     // Reset to force refresh the video
 728     this.video = undefined
 729     this.loadVideo(videoUUID)
 730   }
 731
 732   private handleLiveViewsChange (newViewers: number) {
 733     if (!this.video) {
 734       logger.error('Cannot update video live views because video is no defined.')
 735       return
 736     }
 737
 738     logger.info('Updating live views.')
 739
 740     this.video.viewers = newViewers
 741   }
 742
 743   private initHotkeys () {
 744     this.hotkeys = [
 745       // These hotkeys are managed by the player
 746       new Hotkey('f', e => e, undefined, $localize`Enter/exit fullscreen`),
 747       new Hotkey('space', e => e, undefined, $localize`Play/Pause the video`),
 748       new Hotkey('m', e => e, undefined, $localize`Mute/unmute the video`),
 749
 750       new Hotkey('0-9', e => e, undefined, $localize`Skip to a percentage of the video: 0 is 0% and 9 is 90%`),
 751
 752       new Hotkey('up', e => e, undefined, $localize`Increase the volume`),
 753       new Hotkey('down', e => e, undefined, $localize`Decrease the volume`),
 754
 755       new Hotkey('right', e => e, undefined, $localize`Seek the video forward`),
 756       new Hotkey('left', e => e, undefined, $localize`Seek the video backward`),
 757
 758       new Hotkey('>', e => e, undefined, $localize`Increase playback rate`),
 759       new Hotkey('<', e => e, undefined, $localize`Decrease playback rate`),
 760
 761       new Hotkey(',', e => e, undefined, $localize`Navigate in the video to the previous frame`),
 762       new Hotkey('.', e => e, undefined, $localize`Navigate in the video to the next frame`),
 763
 764       new Hotkey('t', e => {
 765         this.theaterEnabled = !this.theaterEnabled
 766         return false
 767       }, undefined, $localize`Toggle theater mode`)
 768     ]
 769
 770     if (this.isUserLoggedIn()) {
 771       this.hotkeys = this.hotkeys.concat([
 772         new Hotkey('shift+s', () => {
 773           if (this.subscribeButton.isSubscribedToAll()) this.subscribeButton.unsubscribe()
 774           else this.subscribeButton.subscribe()
 775
 776           return false
 777         }, undefined, $localize`Subscribe to the account`)
 778       ])
 779     }
 780
 781     this.hotkeysService.add(this.hotkeys)
 782   }
 783
 784   private setOpenGraphTags () {
 785     this.metaService.setTitle(this.video.name)
 786
 787     this.metaService.setTag('og:type', 'video')
 788
 789     this.metaService.setTag('og:title', this.video.name)
 790     this.metaService.setTag('name', this.video.name)
 791
 792     this.metaService.setTag('og:description', this.video.description)
 793     this.metaService.setTag('description', this.video.description)
 794
 795     this.metaService.setTag('og:image', this.video.previewPath)
 796
 797     this.metaService.setTag('og:duration', this.video.duration.toString())
 798
 799     this.metaService.setTag('og:site_name', 'PeerTube')
 800
 801     this.metaService.setTag('og:url', window.location.href)
 802     this.metaService.setTag('url', window.location.href)
 803   }
 804 }