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