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

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