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, VideoFileTokenService, 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, videoRequiresAuth } 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 videoFileToken: string
  82
  83   private currentTime: number
  84
  85   private paramsSub: Subscription
  86   private queryParamsSub: Subscription
  87   private configSub: Subscription
  88   private liveVideosSub: Subscription
  89
  90   private serverConfig: HTMLServerConfig
  91
  92   private hotkeys: Hotkey[] = []
  93
  94   constructor (
  95     private elementRef: ElementRef,
  96     private route: ActivatedRoute,
  97     private router: Router,
  98     private videoService: VideoService,
  99     private playlistService: VideoPlaylistService,
 100     private liveVideoService: LiveVideoService,
 101     private confirmService: ConfirmService,
 102     private metaService: MetaService,
 103     private authService: AuthService,
 104     private userService: UserService,
 105     private serverService: ServerService,
 106     private restExtractor: RestExtractor,
 107     private notifier: Notifier,
 108     private zone: NgZone,
 109     private videoCaptionService: VideoCaptionService,
 110     private hotkeysService: HotkeysService,
 111     private hooks: HooksService,
 112     private pluginService: PluginService,
 113     private peertubeSocket: PeerTubeSocket,
 114     private screenService: ScreenService,
 115     private videoFileTokenService: VideoFileTokenService,
 116     private location: PlatformLocation,
 117     @Inject(LOCALE_ID) private localeId: string
 118   ) { }
 119
 120   get user () {
 121     return this.authService.getUser()
 122   }
 123
 124   get anonymousUser () {
 125     return this.userService.getAnonymousUser()
 126   }
 127
 128   ngOnInit () {
 129     this.serverConfig = this.serverService.getHTMLConfig()
 130
 131     PeertubePlayerManager.initState()
 132
 133     this.loadRouteParams()
 134     this.loadRouteQuery()
 135
 136     this.theaterEnabled = getStoredTheater()
 137
 138     this.hooks.runAction('action:video-watch.init', 'video-watch')
 139
 140     setTimeout(cleanupVideoWatch, 1500) // Run in timeout to ensure we're not blocking the UI
 141   }
 142
 143   ngOnDestroy () {
 144     this.flushPlayer()
 145
 146     // Unsubscribe subscriptions
 147     if (this.paramsSub) this.paramsSub.unsubscribe()
 148     if (this.queryParamsSub) this.queryParamsSub.unsubscribe()
 149     if (this.configSub) this.configSub.unsubscribe()
 150     if (this.liveVideosSub) this.liveVideosSub.unsubscribe()
 151
 152     // Unbind hotkeys
 153     this.hotkeysService.remove(this.hotkeys)
 154   }
 155
 156   getCurrentTime () {
 157     return this.currentTime
 158   }
 159
 160   getCurrentPlaylistPosition () {
 161     return this.videoWatchPlaylist.currentPlaylistPosition
 162   }
 163
 164   onRecommendations (videos: Video[]) {
 165     if (videos.length === 0) return
 166
 167     // The recommended videos's first element should be the next video
 168     const video = videos[0]
 169     this.nextVideoUUID = video.uuid
 170     this.nextVideoTitle = video.name
 171   }
 172
 173   handleTimestampClicked (timestamp: number) {
 174     if (!this.player || this.video.isLive) return
 175
 176     this.player.currentTime(timestamp)
 177     scrollToTop()
 178   }
 179
 180   onPlaylistVideoFound (videoId: string) {
 181     this.loadVideo({ videoId, forceAutoplay: false })
 182   }
 183
 184   onPlaylistNoVideoFound () {
 185     this.noPlaylistVideoFound = true
 186   }
 187
 188   isUserLoggedIn () {
 189     return this.authService.isLoggedIn()
 190   }
 191
 192   isVideoBlur (video: Video) {
 193     return video.isVideoNSFWForUser(this.user, this.serverConfig)
 194   }
 195
 196   isChannelDisplayNameGeneric () {
 197     const genericChannelDisplayName = [
 198       `Main ${this.video.channel.ownerAccount.name} channel`,
 199       `Default ${this.video.channel.ownerAccount.name} channel`
 200     ]
 201
 202     return genericChannelDisplayName.includes(this.video.channel.displayName)
 203   }
 204
 205   displayOtherVideosAsRow () {
 206     // Use the same value as in the SASS file
 207     return this.screenService.getWindowInnerWidth() <= 1100
 208   }
 209
 210   private loadRouteParams () {
 211     this.paramsSub = this.route.params.subscribe(routeParams => {
 212       const videoId = routeParams['videoId']
 213       if (videoId) return this.loadVideo({ videoId, forceAutoplay: false })
 214
 215       const playlistId = routeParams['playlistId']
 216       if (playlistId) return this.loadPlaylist(playlistId)
 217     })
 218   }
 219
 220   private loadRouteQuery () {
 221     this.queryParamsSub = this.route.queryParams.subscribe(queryParams => {
 222       // Handle the ?playlistPosition
 223       const positionParam = queryParams['playlistPosition'] ?? 1
 224
 225       this.playlistPosition = positionParam === 'last'
 226         ? -1 // Handle the "last" index
 227         : parseInt(positionParam + '', 10)
 228
 229       if (isNaN(this.playlistPosition)) {
 230         logger.error(`playlistPosition query param '${positionParam}' was parsed as NaN, defaulting to 1.`)
 231         this.playlistPosition = 1
 232       }
 233
 234       this.videoWatchPlaylist.updatePlaylistIndex(this.playlistPosition)
 235
 236       const start = queryParams['start']
 237       if (this.player && start) this.player.currentTime(parseInt(start, 10))
 238     })
 239   }
 240
 241   private loadVideo (options: {
 242     videoId: string
 243     forceAutoplay: boolean
 244   }) {
 245     const { videoId, forceAutoplay } = options
 246
 247     if (this.isSameElement(this.video, videoId)) return
 248
 249     if (this.player) this.player.pause()
 250
 251     this.video = undefined
 252
 253     const videoObs = this.hooks.wrapObsFun(
 254       this.videoService.getVideo.bind(this.videoService),
 255       { videoId },
 256       'video-watch',
 257       'filter:api.video-watch.video.get.params',
 258       'filter:api.video-watch.video.get.result'
 259     )
 260
 261     const videoAndLiveObs: Observable<{ video: VideoDetails, live?: LiveVideo, videoFileToken?: string }> = videoObs.pipe(
 262       switchMap(video => {
 263         if (!video.isLive) return of({ video, live: undefined })
 264
 265         return this.liveVideoService.getVideoLive(video.uuid)
 266           .pipe(map(live => ({ live, video })))
 267       }),
 268
 269       switchMap(({ video, live }) => {
 270         if (!videoRequiresAuth(video)) return of({ video, live, videoFileToken: undefined })
 271
 272         return this.videoFileTokenService.getVideoFileToken(video.uuid)
 273           .pipe(map(({ token }) => ({ video, live, videoFileToken: token })))
 274       })
 275     )
 276
 277     forkJoin([
 278       videoAndLiveObs,
 279       this.videoCaptionService.listCaptions(videoId),
 280       this.userService.getAnonymousOrLoggedUser()
 281     ]).subscribe({
 282       next: ([ { video, live, videoFileToken }, captionsResult, loggedInOrAnonymousUser ]) => {
 283         const queryParams = this.route.snapshot.queryParams
 284
 285         const urlOptions = {
 286           resume: queryParams.resume,
 287
 288           startTime: queryParams.start,
 289           stopTime: queryParams.stop,
 290
 291           muted: queryParams.muted,
 292           loop: queryParams.loop,
 293           subtitle: queryParams.subtitle,
 294
 295           playerMode: queryParams.mode,
 296           playbackRate: queryParams.playbackRate,
 297           peertubeLink: false
 298         }
 299
 300         this.onVideoFetched({
 301           video,
 302           live,
 303           videoCaptions: captionsResult.data,
 304           videoFileToken,
 305           loggedInOrAnonymousUser,
 306           urlOptions,
 307           forceAutoplay
 308         }).catch(err => this.handleGlobalError(err))
 309       },
 310
 311       error: err => this.handleRequestError(err)
 312     })
 313   }
 314
 315   private loadPlaylist (playlistId: string) {
 316     if (this.isSameElement(this.playlist, playlistId)) return
 317
 318     this.noPlaylistVideoFound = false
 319
 320     this.playlistService.getVideoPlaylist(playlistId)
 321       .subscribe({
 322         next: playlist => {
 323           this.playlist = playlist
 324
 325           this.videoWatchPlaylist.loadPlaylistElements(playlist, !this.playlistPosition, this.playlistPosition)
 326         },
 327
 328         error: err => this.handleRequestError(err)
 329       })
 330   }
 331
 332   private isSameElement (element: VideoDetails | VideoPlaylist, newId: string) {
 333     if (!element) return false
 334
 335     return (element.id + '') === newId || element.uuid === newId || element.shortUUID === newId
 336   }
 337
 338   private async handleRequestError (err: any) {
 339     const errorBody = err.body as PeerTubeProblemDocument
 340
 341     if (errorBody?.code === ServerErrorCode.DOES_NOT_RESPECT_FOLLOW_CONSTRAINTS && errorBody.originUrl) {
 342       const originUrl = errorBody.originUrl + (window.location.search ?? '')
 343
 344       const res = await this.confirmService.confirm(
 345         // eslint-disable-next-line max-len
 346         $localize`This video is not available on this instance. Do you want to be redirected on the origin instance: <a href="${originUrl}">${originUrl}</a>?`,
 347         $localize`Redirection`
 348       )
 349
 350       if (res === true) return window.location.href = originUrl
 351     }
 352
 353     // If 400, 403 or 404, the video is private or blocked so redirect to 404
 354     return this.restExtractor.redirectTo404IfNotFound(err, 'video', [
 355       HttpStatusCode.BAD_REQUEST_400,
 356       HttpStatusCode.FORBIDDEN_403,
 357       HttpStatusCode.NOT_FOUND_404
 358     ])
 359   }
 360
 361   private handleGlobalError (err: any) {
 362     const errorMessage: string = typeof err === 'string' ? err : err.message
 363     if (!errorMessage) return
 364
 365     // Display a message in the video player instead of a notification
 366     if (errorMessage.includes('from xs param')) {
 367       this.flushPlayer()
 368       this.remoteServerDown = true
 369
 370       return
 371     }
 372
 373     this.notifier.error(errorMessage)
 374   }
 375
 376   private async onVideoFetched (options: {
 377     video: VideoDetails
 378     live: LiveVideo
 379     videoCaptions: VideoCaption[]
 380     videoFileToken: string
 381
 382     urlOptions: URLOptions
 383     loggedInOrAnonymousUser: User
 384     forceAutoplay: boolean
 385   }) {
 386     const { video, live, videoCaptions, urlOptions, videoFileToken, loggedInOrAnonymousUser, forceAutoplay } = options
 387
 388     this.subscribeToLiveEventsIfNeeded(this.video, video)
 389
 390     this.video = video
 391     this.videoCaptions = videoCaptions
 392     this.liveVideo = live
 393     this.videoFileToken = videoFileToken
 394
 395     // Re init attributes
 396     this.playerPlaceholderImgSrc = undefined
 397     this.remoteServerDown = false
 398     this.currentTime = undefined
 399
 400     if (this.isVideoBlur(this.video)) {
 401       const res = await this.confirmService.confirm(
 402         $localize`This video contains mature or explicit content. Are you sure you want to watch it?`,
 403         $localize`Mature or explicit content`
 404       )
 405       if (res === false) return this.location.back()
 406     }
 407
 408     this.buildHotkeysHelp(video)
 409
 410     this.buildPlayer({ urlOptions, loggedInOrAnonymousUser, forceAutoplay })
 411       .catch(err => logger.error('Cannot build the player', err))
 412
 413     this.setOpenGraphTags()
 414
 415     const hookOptions = {
 416       videojs,
 417       video: this.video,
 418       playlist: this.playlist
 419     }
 420     this.hooks.runAction('action:video-watch.video.loaded', 'video-watch', hookOptions)
 421   }
 422
 423   private async buildPlayer (options: {
 424     urlOptions: URLOptions
 425     loggedInOrAnonymousUser: User
 426     forceAutoplay: boolean
 427   }) {
 428     const { urlOptions, loggedInOrAnonymousUser, forceAutoplay } = options
 429
 430     // Flush old player if needed
 431     this.flushPlayer()
 432
 433     const videoState = this.video.state.id
 434     if (videoState === VideoState.LIVE_ENDED || videoState === VideoState.WAITING_FOR_LIVE) {
 435       this.playerPlaceholderImgSrc = this.video.previewPath
 436       return
 437     }
 438
 439     // Build video element, because videojs removes it on dispose
 440     const playerElementWrapper = this.elementRef.nativeElement.querySelector('#videojs-wrapper')
 441     this.playerElement = document.createElement('video')
 442     this.playerElement.className = 'video-js vjs-peertube-skin'
 443     this.playerElement.setAttribute('playsinline', 'true')
 444     playerElementWrapper.appendChild(this.playerElement)
 445
 446     const params = {
 447       video: this.video,
 448       videoCaptions: this.videoCaptions,
 449       liveVideo: this.liveVideo,
 450       videoFileToken: this.videoFileToken,
 451       urlOptions,
 452       loggedInOrAnonymousUser,
 453       forceAutoplay,
 454       user: this.user
 455     }
 456     const { playerMode, playerOptions } = await this.hooks.wrapFun(
 457       this.buildPlayerManagerOptions.bind(this),
 458       params,
 459       'video-watch',
 460       'filter:internal.video-watch.player.build-options.params',
 461       'filter:internal.video-watch.player.build-options.result'
 462     )
 463
 464     this.zone.runOutsideAngular(async () => {
 465       this.player = await PeertubePlayerManager.initialize(playerMode, playerOptions, player => this.player = player)
 466
 467       this.player.on('customError', (_e, data: any) => {
 468         this.zone.run(() => this.handleGlobalError(data.err))
 469       })
 470
 471       this.player.on('timeupdate', () => {
 472         // Don't need to trigger angular change for this variable, that is sent to children components on click
 473         this.currentTime = Math.floor(this.player.currentTime())
 474       })
 475
 476       /**
 477        * condition: true to make the upnext functionality trigger, false to disable the upnext functionality
 478        *            go to the next video in 'condition()' if you don't want of the timer.
 479        * next: function triggered at the end of the timer.
 480        * suspended: function used at each click of the timer checking if we need to reset progress
 481        *            and wait until suspended becomes truthy again.
 482        */
 483       this.player.upnext({
 484         timeout: 5000, // 5s
 485
 486         headText: $localize`Up Next`,
 487         cancelText: $localize`Cancel`,
 488         suspendedText: $localize`Autoplay is suspended`,
 489
 490         getTitle: () => this.nextVideoTitle,
 491
 492         next: () => this.zone.run(() => this.playNextVideoInAngularZone()),
 493         condition: () => {
 494           if (!this.playlist) return this.isAutoPlayNext()
 495
 496           // Don't wait timeout to play the next playlist video
 497           if (this.isPlaylistAutoPlayNext()) {
 498             this.playNextVideoInAngularZone()
 499             return undefined
 500           }
 501
 502           return false
 503         },
 504
 505         suspended: () => {
 506           return (
 507             !isXPercentInViewport(this.player.el() as HTMLElement, 80) ||
 508             !document.getElementById('content').contains(document.activeElement)
 509           )
 510         }
 511       })
 512
 513       this.player.one('stopped', () => {
 514         if (this.playlist && this.isPlaylistAutoPlayNext()) {
 515           this.playNextVideoInAngularZone()
 516         }
 517       })
 518
 519       this.player.one('ended', () => {
 520         if (this.video.isLive) {
 521           this.zone.run(() => this.video.state.id = VideoState.LIVE_ENDED)
 522         }
 523       })
 524
 525       this.player.on('theaterChange', (_: any, enabled: boolean) => {
 526         this.zone.run(() => this.theaterEnabled = enabled)
 527       })
 528
 529       this.hooks.runAction('action:video-watch.player.loaded', 'video-watch', {
 530         player: this.player,
 531         playlist: this.playlist,
 532         playlistPosition: this.playlistPosition,
 533         videojs,
 534         video: this.video
 535       })
 536     })
 537   }
 538
 539   private hasNextVideo () {
 540     if (this.playlist) {
 541       return this.videoWatchPlaylist.hasNextVideo()
 542     }
 543
 544     return true
 545   }
 546
 547   private playNextVideoInAngularZone () {
 548     if (this.playlist) {
 549       this.zone.run(() => this.videoWatchPlaylist.navigateToNextPlaylistVideo())
 550       return
 551     }
 552
 553     if (this.nextVideoUUID) {
 554       this.router.navigate([ '/w', this.nextVideoUUID ])
 555     }
 556   }
 557
 558   private isAutoplay () {
 559     // We'll jump to the thread id, so do not play the video
 560     if (this.route.snapshot.params['threadId']) return false
 561
 562     // Otherwise true by default
 563     if (!this.user) return true
 564
 565     // Be sure the autoPlay is set to false
 566     return this.user.autoPlayVideo !== false
 567   }
 568
 569   private isAutoPlayNext () {
 570     return (
 571       (this.user?.autoPlayNextVideo) ||
 572       this.anonymousUser.autoPlayNextVideo
 573     )
 574   }
 575
 576   private isPlaylistAutoPlayNext () {
 577     return (
 578       (this.user?.autoPlayNextVideoPlaylist) ||
 579       this.anonymousUser.autoPlayNextVideoPlaylist
 580     )
 581   }
 582
 583   private flushPlayer () {
 584     // Remove player if it exists
 585     if (!this.player) return
 586
 587     try {
 588       this.player.dispose()
 589       this.player = undefined
 590     } catch (err) {
 591       logger.error('Cannot dispose player.', err)
 592     }
 593   }
 594
 595   private buildPlayerManagerOptions (params: {
 596     video: VideoDetails
 597     liveVideo: LiveVideo
 598     videoCaptions: VideoCaption[]
 599
 600     videoFileToken: string
 601
 602     urlOptions: CustomizationOptions & { playerMode: PlayerMode }
 603
 604     loggedInOrAnonymousUser: User
 605     forceAutoplay: boolean
 606     user?: AuthUser // Keep for plugins
 607   }) {
 608     const { video, liveVideo, videoCaptions, videoFileToken, urlOptions, loggedInOrAnonymousUser, forceAutoplay } = params
 609
 610     const getStartTime = () => {
 611       const byUrl = urlOptions.startTime !== undefined
 612       const byHistory = video.userHistory && (!this.playlist || urlOptions.resume !== undefined)
 613       const byLocalStorage = getStoredVideoWatchHistory(video.uuid)
 614
 615       if (byUrl) return timeToInt(urlOptions.startTime)
 616       if (byHistory) return video.userHistory.currentTime
 617       if (byLocalStorage) return byLocalStorage.duration
 618
 619       return 0
 620     }
 621
 622     let startTime = getStartTime()
 623
 624     // If we are at the end of the video, reset the timer
 625     if (video.duration - startTime <= 1) startTime = 0
 626
 627     const playerCaptions = videoCaptions.map(c => ({
 628       label: c.language.label,
 629       language: c.language.id,
 630       src: environment.apiUrl + c.captionPath
 631     }))
 632
 633     const liveOptions = video.isLive
 634       ? { latencyMode: liveVideo.latencyMode }
 635       : undefined
 636
 637     const options: PeertubePlayerManagerOptions = {
 638       common: {
 639         autoplay: this.isAutoplay(),
 640         forceAutoplay,
 641         p2pEnabled: isP2PEnabled(video, this.serverConfig, loggedInOrAnonymousUser.p2pEnabled),
 642
 643         hasNextVideo: () => this.hasNextVideo(),
 644         nextVideo: () => this.playNextVideoInAngularZone(),
 645
 646         playerElement: this.playerElement,
 647         onPlayerElementChange: (element: HTMLVideoElement) => this.playerElement = element,
 648
 649         videoDuration: video.duration,
 650         enableHotkeys: true,
 651         inactivityTimeout: 2500,
 652         poster: video.previewUrl,
 653
 654         startTime,
 655         stopTime: urlOptions.stopTime,
 656         controlBar: urlOptions.controlBar,
 657         controls: urlOptions.controls,
 658         muted: urlOptions.muted,
 659         loop: urlOptions.loop,
 660         subtitle: urlOptions.subtitle,
 661         playbackRate: urlOptions.playbackRate,
 662
 663         peertubeLink: urlOptions.peertubeLink,
 664
 665         theaterButton: true,
 666         captions: videoCaptions.length !== 0,
 667
 668         embedUrl: video.embedUrl,
 669         embedTitle: video.name,
 670         instanceName: this.serverConfig.instance.name,
 671
 672         isLive: video.isLive,
 673         liveOptions,
 674
 675         language: this.localeId,
 676
 677         metricsUrl: environment.apiUrl + '/api/v1/metrics/playback',
 678
 679         videoViewUrl: video.privacy.id !== VideoPrivacy.PRIVATE
 680           ? this.videoService.getVideoViewUrl(video.uuid)
 681           : null,
 682         authorizationHeader: () => this.authService.getRequestHeaderValue(),
 683
 684         serverUrl: environment.originServerUrl || window.location.origin,
 685
 686         videoFileToken: () => videoFileToken,
 687         requiresAuth: videoRequiresAuth(video),
 688
 689         videoCaptions: playerCaptions,
 690
 691         videoShortUUID: video.shortUUID,
 692         videoUUID: video.uuid,
 693
 694         errorNotifier: (message: string) => this.notifier.error(message)
 695       },
 696
 697       webtorrent: {
 698         videoFiles: video.files
 699       },
 700
 701       pluginsManager: this.pluginService.getPluginsManager()
 702     }
 703
 704     // Only set this if we're in a playlist
 705     if (this.playlist) {
 706       options.common.hasPreviousVideo = () => this.videoWatchPlaylist.hasPreviousVideo()
 707
 708       options.common.previousVideo = () => {
 709         this.zone.run(() => this.videoWatchPlaylist.navigateToPreviousPlaylistVideo())
 710       }
 711     }
 712
 713     let mode: PlayerMode
 714
 715     if (urlOptions.playerMode) {
 716       if (urlOptions.playerMode === 'p2p-media-loader') mode = 'p2p-media-loader'
 717       else mode = 'webtorrent'
 718     } else {
 719       if (video.hasHlsPlaylist()) mode = 'p2p-media-loader'
 720       else mode = 'webtorrent'
 721     }
 722
 723     // p2p-media-loader needs TextEncoder, fallback on WebTorrent if not available
 724     if (typeof TextEncoder === 'undefined') {
 725       mode = 'webtorrent'
 726     }
 727
 728     if (mode === 'p2p-media-loader') {
 729       const hlsPlaylist = video.getHlsPlaylist()
 730
 731       const p2pMediaLoader = {
 732         playlistUrl: hlsPlaylist.playlistUrl,
 733         segmentsSha256Url: hlsPlaylist.segmentsSha256Url,
 734         redundancyBaseUrls: hlsPlaylist.redundancies.map(r => r.baseUrl),
 735         trackerAnnounce: video.trackerUrls,
 736         videoFiles: hlsPlaylist.files
 737       } as P2PMediaLoaderOptions
 738
 739       Object.assign(options, { p2pMediaLoader })
 740     }
 741
 742     return { playerMode: mode, playerOptions: options }
 743   }
 744
 745   private async subscribeToLiveEventsIfNeeded (oldVideo: VideoDetails, newVideo: VideoDetails) {
 746     if (!this.liveVideosSub) {
 747       this.liveVideosSub = this.buildLiveEventsSubscription()
 748     }
 749
 750     if (oldVideo && oldVideo.id !== newVideo.id) {
 751       this.peertubeSocket.unsubscribeLiveVideos(oldVideo.id)
 752     }
 753
 754     if (!newVideo.isLive) return
 755
 756     await this.peertubeSocket.subscribeToLiveVideosSocket(newVideo.id)
 757   }
 758
 759   private buildLiveEventsSubscription () {
 760     return this.peertubeSocket.getLiveVideosObservable()
 761       .subscribe(({ type, payload }) => {
 762         if (type === 'state-change') return this.handleLiveStateChange(payload.state)
 763         if (type === 'views-change') return this.handleLiveViewsChange(payload.viewers)
 764       })
 765   }
 766
 767   private handleLiveStateChange (newState: VideoState) {
 768     if (newState !== VideoState.PUBLISHED) return
 769
 770     logger.info('Loading video after live update.')
 771
 772     const videoUUID = this.video.uuid
 773
 774     // Reset to force refresh the video
 775     this.video = undefined
 776     this.loadVideo({ videoId: videoUUID, forceAutoplay: true })
 777   }
 778
 779   private handleLiveViewsChange (newViewers: number) {
 780     if (!this.video) {
 781       logger.error('Cannot update video live views because video is no defined.')
 782       return
 783     }
 784
 785     logger.info('Updating live views.')
 786
 787     this.video.viewers = newViewers
 788   }
 789
 790   private buildHotkeysHelp (video: Video) {
 791     if (this.hotkeys.length !== 0) {
 792       this.hotkeysService.remove(this.hotkeys)
 793     }
 794
 795     this.hotkeys = [
 796       // These hotkeys are managed by the player
 797       new Hotkey('f', e => e, undefined, $localize`Enter/exit fullscreen`),
 798       new Hotkey('space', e => e, undefined, $localize`Play/Pause the video`),
 799       new Hotkey('m', e => e, undefined, $localize`Mute/unmute the video`),
 800
 801       new Hotkey('up', e => e, undefined, $localize`Increase the volume`),
 802       new Hotkey('down', e => e, undefined, $localize`Decrease the volume`),
 803
 804       new Hotkey('t', e => {
 805         this.theaterEnabled = !this.theaterEnabled
 806         return false
 807       }, undefined, $localize`Toggle theater mode`)
 808     ]
 809
 810     if (!video.isLive) {
 811       this.hotkeys = this.hotkeys.concat([
 812         // These hotkeys are also managed by the player but only for VOD
 813
 814         new Hotkey('0-9', e => e, undefined, $localize`Skip to a percentage of the video: 0 is 0% and 9 is 90%`),
 815
 816         new Hotkey('right', e => e, undefined, $localize`Seek the video forward`),
 817         new Hotkey('left', e => e, undefined, $localize`Seek the video backward`),
 818
 819         new Hotkey('>', e => e, undefined, $localize`Increase playback rate`),
 820         new Hotkey('<', e => e, undefined, $localize`Decrease playback rate`),
 821
 822         new Hotkey(',', e => e, undefined, $localize`Navigate in the video to the previous frame`),
 823         new Hotkey('.', e => e, undefined, $localize`Navigate in the video to the next frame`)
 824       ])
 825     }
 826
 827     if (this.isUserLoggedIn()) {
 828       this.hotkeys = this.hotkeys.concat([
 829         new Hotkey('shift+s', () => {
 830           if (this.subscribeButton.isSubscribedToAll()) this.subscribeButton.unsubscribe()
 831           else this.subscribeButton.subscribe()
 832
 833           return false
 834         }, undefined, $localize`Subscribe to the account`)
 835       ])
 836     }
 837
 838     this.hotkeysService.add(this.hotkeys)
 839   }
 840
 841   private setOpenGraphTags () {
 842     this.metaService.setTitle(this.video.name)
 843
 844     this.metaService.setTag('og:type', 'video')
 845
 846     this.metaService.setTag('og:title', this.video.name)
 847     this.metaService.setTag('name', this.video.name)
 848
 849     this.metaService.setTag('og:description', this.video.description)
 850     this.metaService.setTag('description', this.video.description)
 851
 852     this.metaService.setTag('og:image', this.video.previewPath)
 853
 854     this.metaService.setTag('og:duration', this.video.duration.toString())
 855
 856     this.metaService.setTag('og:site_name', 'PeerTube')
 857
 858     this.metaService.setTag('og:url', window.location.href)
 859     this.metaService.setTag('url', window.location.href)
 860   }
 861 }