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

   1 import { catchError } from 'rxjs/operators'
   2 import { ChangeDetectorRef, Component, ElementRef, Inject, LOCALE_ID, NgZone, OnDestroy, OnInit, ViewChild } from '@angular/core'
   3 import { ActivatedRoute, Router } from '@angular/router'
   4 import { RedirectService } from '@app/core/routing/redirect.service'
   5 import { peertubeLocalStorage } from '@app/shared/misc/peertube-local-storage'
   6 import { VideoSupportComponent } from '@app/videos/+video-watch/modal/video-support.component'
   7 import { MetaService } from '@ngx-meta/core'
   8 import { AuthUser, Notifier, ServerService } from '@app/core'
   9 import { forkJoin, Observable, Subscription } from 'rxjs'
  10 import { Hotkey, HotkeysService } from 'angular2-hotkeys'
  11 import { UserVideoRateType, VideoCaption, VideoPrivacy, VideoState } from '../../../../../shared'
  12 import { AuthService, ConfirmService } from '../../core'
  13 import { RestExtractor, VideoBlacklistService } from '../../shared'
  14 import { VideoDetails } from '../../shared/video/video-details.model'
  15 import { VideoService } from '../../shared/video/video.service'
  16 import { VideoShareComponent } from './modal/video-share.component'
  17 import { SubscribeButtonComponent } from '@app/shared/user-subscription/subscribe-button.component'
  18 import { I18n } from '@ngx-translate/i18n-polyfill'
  19 import { environment } from '../../../environments/environment'
  20 import { VideoCaptionService } from '@app/shared/video-caption'
  21 import { MarkdownService } from '@app/shared/renderer'
  22 import {
  23   videojs,
  24   CustomizationOptions,
  25   P2PMediaLoaderOptions,
  26   PeertubePlayerManager,
  27   PeertubePlayerManagerOptions,
  28   PlayerMode
  29 } from '../../../assets/player/peertube-player-manager'
  30 import { VideoPlaylist } from '@app/shared/video-playlist/video-playlist.model'
  31 import { VideoPlaylistService } from '@app/shared/video-playlist/video-playlist.service'
  32 import { Video } from '@app/shared/video/video.model'
  33 import { isWebRTCDisabled, timeToInt } from '../../../assets/player/utils'
  34 import { VideoWatchPlaylistComponent } from '@app/videos/+video-watch/video-watch-playlist.component'
  35 import { getStoredTheater } from '../../../assets/player/peertube-player-local-storage'
  36 import { PluginService } from '@app/core/plugins/plugin.service'
  37 import { HooksService } from '@app/core/plugins/hooks.service'
  38 import { PlatformLocation } from '@angular/common'
  39 import { randomInt } from '@shared/core-utils/miscs/miscs'
  40
  41 @Component({
  42   selector: 'my-video-watch',
  43   templateUrl: './video-watch.component.html',
  44   styleUrls: [ './video-watch.component.scss' ]
  45 })
  46 export class VideoWatchComponent implements OnInit, OnDestroy {
  47   private static LOCAL_STORAGE_PRIVACY_CONCERN_KEY = 'video-watch-privacy-concern'
  48
  49   @ViewChild('videoWatchPlaylist', { static: true }) videoWatchPlaylist: VideoWatchPlaylistComponent
  50   @ViewChild('videoShareModal', { static: false }) videoShareModal: VideoShareComponent
  51   @ViewChild('videoSupportModal', { static: false }) videoSupportModal: VideoSupportComponent
  52   @ViewChild('subscribeButton', { static: false }) subscribeButton: SubscribeButtonComponent
  53
  54   player: any
  55   playerElement: HTMLVideoElement
  56   theaterEnabled = false
  57   userRating: UserVideoRateType = null
  58   descriptionLoading = false
  59
  60   video: VideoDetails = null
  61   videoCaptions: VideoCaption[] = []
  62
  63   playlist: VideoPlaylist = null
  64
  65   completeDescriptionShown = false
  66   completeVideoDescription: string
  67   shortVideoDescription: string
  68   videoHTMLDescription = ''
  69   likesBarTooltipText = ''
  70   hasAlreadyAcceptedPrivacyConcern = false
  71   remoteServerDown = false
  72   hotkeys: Hotkey[] = []
  73
  74   private nextVideoUuid = ''
  75   private currentTime: number
  76   private paramsSub: Subscription
  77   private queryParamsSub: Subscription
  78   private configSub: Subscription
  79
  80   constructor (
  81     private elementRef: ElementRef,
  82     private changeDetector: ChangeDetectorRef,
  83     private route: ActivatedRoute,
  84     private router: Router,
  85     private videoService: VideoService,
  86     private playlistService: VideoPlaylistService,
  87     private videoBlacklistService: VideoBlacklistService,
  88     private confirmService: ConfirmService,
  89     private metaService: MetaService,
  90     private authService: AuthService,
  91     private serverService: ServerService,
  92     private restExtractor: RestExtractor,
  93     private notifier: Notifier,
  94     private pluginService: PluginService,
  95     private markdownService: MarkdownService,
  96     private zone: NgZone,
  97     private redirectService: RedirectService,
  98     private videoCaptionService: VideoCaptionService,
  99     private i18n: I18n,
 100     private hotkeysService: HotkeysService,
 101     private hooks: HooksService,
 102     private location: PlatformLocation,
 103     @Inject(LOCALE_ID) private localeId: string
 104   ) {}
 105
 106   get user () {
 107     return this.authService.getUser()
 108   }
 109
 110   async ngOnInit () {
 111     this.configSub = this.serverService.configLoaded
 112         .subscribe(() => {
 113           if (
 114             isWebRTCDisabled() ||
 115             this.serverService.getConfig().tracker.enabled === false ||
 116             peertubeLocalStorage.getItem(VideoWatchComponent.LOCAL_STORAGE_PRIVACY_CONCERN_KEY) === 'true'
 117           ) {
 118             this.hasAlreadyAcceptedPrivacyConcern = true
 119           }
 120         })
 121
 122     this.paramsSub = this.route.params.subscribe(routeParams => {
 123       const videoId = routeParams[ 'videoId' ]
 124       if (videoId) this.loadVideo(videoId)
 125
 126       const playlistId = routeParams[ 'playlistId' ]
 127       if (playlistId) this.loadPlaylist(playlistId)
 128     })
 129
 130     this.queryParamsSub = this.route.queryParams.subscribe(queryParams => {
 131       const videoId = queryParams[ 'videoId' ]
 132       if (videoId) this.loadVideo(videoId)
 133     })
 134
 135     this.initHotkeys()
 136
 137     this.theaterEnabled = getStoredTheater()
 138
 139     this.hooks.runAction('action:video-watch.init', 'video-watch')
 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
 149     // Unbind hotkeys
 150     this.hotkeysService.remove(this.hotkeys)
 151   }
 152
 153   setLike () {
 154     if (this.isUserLoggedIn() === false) return
 155
 156     // Already liked this video
 157     if (this.userRating === 'like') this.setRating('none')
 158     else this.setRating('like')
 159   }
 160
 161   setDislike () {
 162     if (this.isUserLoggedIn() === false) return
 163
 164     // Already disliked this video
 165     if (this.userRating === 'dislike') this.setRating('none')
 166     else this.setRating('dislike')
 167   }
 168
 169   getRatePopoverText () {
 170     if (this.isUserLoggedIn()) return undefined
 171
 172     return this.i18n('You need to be connected to rate this content.')
 173   }
 174
 175   showMoreDescription () {
 176     if (this.completeVideoDescription === undefined) {
 177       return this.loadCompleteDescription()
 178     }
 179
 180     this.updateVideoDescription(this.completeVideoDescription)
 181     this.completeDescriptionShown = true
 182   }
 183
 184   showLessDescription () {
 185     this.updateVideoDescription(this.shortVideoDescription)
 186     this.completeDescriptionShown = false
 187   }
 188
 189   loadCompleteDescription () {
 190     this.descriptionLoading = true
 191
 192     this.videoService.loadCompleteDescription(this.video.descriptionPath)
 193         .subscribe(
 194           description => {
 195             this.completeDescriptionShown = true
 196             this.descriptionLoading = false
 197
 198             this.shortVideoDescription = this.video.description
 199             this.completeVideoDescription = description
 200
 201             this.updateVideoDescription(this.completeVideoDescription)
 202           },
 203
 204           error => {
 205             this.descriptionLoading = false
 206             this.notifier.error(error.message)
 207           }
 208         )
 209   }
 210
 211   showSupportModal () {
 212     this.pausePlayer()
 213
 214     this.videoSupportModal.show()
 215   }
 216
 217   showShareModal () {
 218     this.pausePlayer()
 219
 220     this.videoShareModal.show(this.currentTime)
 221   }
 222
 223   isUserLoggedIn () {
 224     return this.authService.isLoggedIn()
 225   }
 226
 227   getVideoTags () {
 228     if (!this.video || Array.isArray(this.video.tags) === false) return []
 229
 230     return this.video.tags
 231   }
 232
 233   onRecommendations (videos: Video[]) {
 234     if (videos.length > 0) {
 235       // Pick a random video until the recommendations are improved
 236       this.nextVideoUuid = videos[randomInt(0,videos.length - 1)].uuid
 237     }
 238   }
 239
 240   onModalOpened () {
 241     this.pausePlayer()
 242   }
 243
 244   onVideoRemoved () {
 245     this.redirectService.redirectToHomepage()
 246   }
 247
 248   acceptedPrivacyConcern () {
 249     peertubeLocalStorage.setItem(VideoWatchComponent.LOCAL_STORAGE_PRIVACY_CONCERN_KEY, 'true')
 250     this.hasAlreadyAcceptedPrivacyConcern = true
 251   }
 252
 253   isVideoToTranscode () {
 254     return this.video && this.video.state.id === VideoState.TO_TRANSCODE
 255   }
 256
 257   isVideoToImport () {
 258     return this.video && this.video.state.id === VideoState.TO_IMPORT
 259   }
 260
 261   hasVideoScheduledPublication () {
 262     return this.video && this.video.scheduledUpdate !== undefined
 263   }
 264
 265   isVideoBlur (video: Video) {
 266     return video.isVideoNSFWForUser(this.user, this.serverService.getConfig())
 267   }
 268
 269   private loadVideo (videoId: string) {
 270     // Video did not change
 271     if (this.video && this.video.uuid === videoId) return
 272
 273     if (this.player) this.player.pause()
 274
 275     const videoObs = this.hooks.wrapObsFun(
 276       this.videoService.getVideo.bind(this.videoService),
 277       { videoId },
 278       'video-watch',
 279       'filter:api.video-watch.video.get.params',
 280       'filter:api.video-watch.video.get.result'
 281     )
 282
 283     // Video did change
 284     forkJoin([
 285       videoObs,
 286       this.videoCaptionService.listCaptions(videoId)
 287     ])
 288       .pipe(
 289         // If 401, the video is private or blacklisted so redirect to 404
 290         catchError(err => this.restExtractor.redirectTo404IfNotFound(err, [ 400, 401, 403, 404 ]))
 291       )
 292       .subscribe(([ video, captionsResult ]) => {
 293         const queryParams = this.route.snapshot.queryParams
 294
 295         const urlOptions = {
 296           startTime: queryParams.start,
 297           stopTime: queryParams.stop,
 298
 299           muted: queryParams.muted,
 300           loop: queryParams.loop,
 301           subtitle: queryParams.subtitle,
 302
 303           playerMode: queryParams.mode,
 304           peertubeLink: false
 305         }
 306
 307         this.onVideoFetched(video, captionsResult.data, urlOptions)
 308             .catch(err => this.handleError(err))
 309       })
 310   }
 311
 312   private loadPlaylist (playlistId: string) {
 313     // Playlist did not change
 314     if (this.playlist && this.playlist.uuid === playlistId) return
 315
 316     this.playlistService.getVideoPlaylist(playlistId)
 317       .pipe(
 318         // If 401, the video is private or blacklisted so redirect to 404
 319         catchError(err => this.restExtractor.redirectTo404IfNotFound(err, [ 400, 401, 403, 404 ]))
 320       )
 321       .subscribe(playlist => {
 322         this.playlist = playlist
 323
 324         const videoId = this.route.snapshot.queryParams['videoId']
 325         this.videoWatchPlaylist.loadPlaylistElements(playlist, !videoId)
 326       })
 327   }
 328
 329   private updateVideoDescription (description: string) {
 330     this.video.description = description
 331     this.setVideoDescriptionHTML()
 332       .catch(err => console.error(err))
 333   }
 334
 335   private async setVideoDescriptionHTML () {
 336     this.videoHTMLDescription = await this.markdownService.textMarkdownToHTML(this.video.description)
 337   }
 338
 339   private setVideoLikesBarTooltipText () {
 340     this.likesBarTooltipText = this.i18n('{{likesNumber}} likes / {{dislikesNumber}} dislikes', {
 341       likesNumber: this.video.likes,
 342       dislikesNumber: this.video.dislikes
 343     })
 344   }
 345
 346   private handleError (err: any) {
 347     const errorMessage: string = typeof err === 'string' ? err : err.message
 348     if (!errorMessage) return
 349
 350     // Display a message in the video player instead of a notification
 351     if (errorMessage.indexOf('from xs param') !== -1) {
 352       this.flushPlayer()
 353       this.remoteServerDown = true
 354       this.changeDetector.detectChanges()
 355
 356       return
 357     }
 358
 359     this.notifier.error(errorMessage)
 360   }
 361
 362   private checkUserRating () {
 363     // Unlogged users do not have ratings
 364     if (this.isUserLoggedIn() === false) return
 365
 366     this.videoService.getUserVideoRating(this.video.id)
 367         .subscribe(
 368           ratingObject => {
 369             if (ratingObject) {
 370               this.userRating = ratingObject.rating
 371             }
 372           },
 373
 374           err => this.notifier.error(err.message)
 375         )
 376   }
 377
 378   private async onVideoFetched (
 379     video: VideoDetails,
 380     videoCaptions: VideoCaption[],
 381     urlOptions: CustomizationOptions & { playerMode: PlayerMode }
 382   ) {
 383     this.video = video
 384     this.videoCaptions = videoCaptions
 385
 386     // Re init attributes
 387     this.descriptionLoading = false
 388     this.completeDescriptionShown = false
 389     this.remoteServerDown = false
 390     this.currentTime = undefined
 391
 392     this.videoWatchPlaylist.updatePlaylistIndex(video)
 393
 394     if (this.isVideoBlur(this.video)) {
 395       const res = await this.confirmService.confirm(
 396         this.i18n('This video contains mature or explicit content. Are you sure you want to watch it?'),
 397         this.i18n('Mature or explicit content')
 398       )
 399       if (res === false) return this.location.back()
 400     }
 401
 402     // Flush old player if needed
 403     this.flushPlayer()
 404
 405     // Build video element, because videojs removes it on dispose
 406     const playerElementWrapper = this.elementRef.nativeElement.querySelector('#videojs-wrapper')
 407     this.playerElement = document.createElement('video')
 408     this.playerElement.className = 'video-js vjs-peertube-skin'
 409     this.playerElement.setAttribute('playsinline', 'true')
 410     playerElementWrapper.appendChild(this.playerElement)
 411
 412     const params = {
 413       video: this.video,
 414       videoCaptions,
 415       urlOptions,
 416       user: this.user
 417     }
 418     const { playerMode, playerOptions } = await this.hooks.wrapFun(
 419       this.buildPlayerManagerOptions.bind(this),
 420       params,
 421       'video-watch',
 422       'filter:internal.video-watch.player.build-options.params',
 423       'filter:internal.video-watch.player.build-options.result'
 424     )
 425
 426     this.zone.runOutsideAngular(async () => {
 427       this.player = await PeertubePlayerManager.initialize(playerMode, playerOptions, player => this.player = player)
 428       this.player.focus()
 429
 430       this.player.on('customError', ({ err }: { err: any }) => this.handleError(err))
 431
 432       this.player.on('timeupdate', () => {
 433         this.currentTime = Math.floor(this.player.currentTime())
 434       })
 435
 436       this.player.one('ended', () => {
 437         if (this.playlist) {
 438           this.zone.run(() => this.videoWatchPlaylist.navigateToNextPlaylistVideo())
 439         } else if (this.user && this.user.autoPlayNextVideo) {
 440           this.zone.run(() => this.autoplayNext())
 441         }
 442       })
 443
 444       this.player.one('stopped', () => {
 445         if (this.playlist) {
 446           this.zone.run(() => this.videoWatchPlaylist.navigateToNextPlaylistVideo())
 447         }
 448       })
 449
 450       this.player.on('theaterChange', (_: any, enabled: boolean) => {
 451         this.zone.run(() => this.theaterEnabled = enabled)
 452       })
 453
 454       this.hooks.runAction('action:video-watch.player.loaded', 'video-watch', { player: this.player })
 455     })
 456
 457     this.setVideoDescriptionHTML()
 458     this.setVideoLikesBarTooltipText()
 459
 460     this.setOpenGraphTags()
 461     this.checkUserRating()
 462
 463     this.hooks.runAction('action:video-watch.video.loaded', 'video-watch', { videojs })
 464   }
 465
 466   private autoplayNext () {
 467     if (this.nextVideoUuid) {
 468       this.router.navigate([ '/videos/watch', this.nextVideoUuid ])
 469     }
 470   }
 471
 472   private setRating (nextRating: UserVideoRateType) {
 473     const ratingMethods: { [id in UserVideoRateType]: (id: number) => Observable<any> } = {
 474       like: this.videoService.setVideoLike,
 475       dislike: this.videoService.setVideoDislike,
 476       none: this.videoService.unsetVideoLike
 477     }
 478
 479     ratingMethods[nextRating].call(this.videoService, this.video.id)
 480           .subscribe(
 481             () => {
 482               // Update the video like attribute
 483               this.updateVideoRating(this.userRating, nextRating)
 484               this.userRating = nextRating
 485             },
 486
 487             (err: { message: string }) => this.notifier.error(err.message)
 488           )
 489   }
 490
 491   private updateVideoRating (oldRating: UserVideoRateType, newRating: UserVideoRateType) {
 492     let likesToIncrement = 0
 493     let dislikesToIncrement = 0
 494
 495     if (oldRating) {
 496       if (oldRating === 'like') likesToIncrement--
 497       if (oldRating === 'dislike') dislikesToIncrement--
 498     }
 499
 500     if (newRating === 'like') likesToIncrement++
 501     if (newRating === 'dislike') dislikesToIncrement++
 502
 503     this.video.likes += likesToIncrement
 504     this.video.dislikes += dislikesToIncrement
 505
 506     this.video.buildLikeAndDislikePercents()
 507     this.setVideoLikesBarTooltipText()
 508   }
 509
 510   private setOpenGraphTags () {
 511     this.metaService.setTitle(this.video.name)
 512
 513     this.metaService.setTag('og:type', 'video')
 514
 515     this.metaService.setTag('og:title', this.video.name)
 516     this.metaService.setTag('name', this.video.name)
 517
 518     this.metaService.setTag('og:description', this.video.description)
 519     this.metaService.setTag('description', this.video.description)
 520
 521     this.metaService.setTag('og:image', this.video.previewPath)
 522
 523     this.metaService.setTag('og:duration', this.video.duration.toString())
 524
 525     this.metaService.setTag('og:site_name', 'PeerTube')
 526
 527     this.metaService.setTag('og:url', window.location.href)
 528     this.metaService.setTag('url', window.location.href)
 529   }
 530
 531   private isAutoplay () {
 532     // We'll jump to the thread id, so do not play the video
 533     if (this.route.snapshot.params['threadId']) return false
 534
 535     // Otherwise true by default
 536     if (!this.user) return true
 537
 538     // Be sure the autoPlay is set to false
 539     return this.user.autoPlayVideo !== false
 540   }
 541
 542   private flushPlayer () {
 543     // Remove player if it exists
 544     if (this.player) {
 545       try {
 546         this.player.dispose()
 547         this.player = undefined
 548       } catch (err) {
 549         console.error('Cannot dispose player.', err)
 550       }
 551     }
 552   }
 553
 554   private buildPlayerManagerOptions (params: {
 555     video: VideoDetails,
 556     videoCaptions: VideoCaption[],
 557     urlOptions: CustomizationOptions & { playerMode: PlayerMode },
 558     user?: AuthUser
 559   }) {
 560     const { video, videoCaptions, urlOptions, user } = params
 561
 562     let startTime = timeToInt(urlOptions.startTime) || (video.userHistory ? video.userHistory.currentTime : 0)
 563     // If we are at the end of the video, reset the timer
 564     if (video.duration - startTime <= 1) startTime = 0
 565
 566     const playerCaptions = videoCaptions.map(c => ({
 567       label: c.language.label,
 568       language: c.language.id,
 569       src: environment.apiUrl + c.captionPath
 570     }))
 571
 572     const options: PeertubePlayerManagerOptions = {
 573       common: {
 574         autoplay: this.isAutoplay(),
 575
 576         playerElement: this.playerElement,
 577         onPlayerElementChange: (element: HTMLVideoElement) => this.playerElement = element,
 578
 579         videoDuration: video.duration,
 580         enableHotkeys: true,
 581         inactivityTimeout: 2500,
 582         poster: video.previewUrl,
 583
 584         startTime,
 585         stopTime: urlOptions.stopTime,
 586         controls: urlOptions.controls,
 587         muted: urlOptions.muted,
 588         loop: urlOptions.loop,
 589         subtitle: urlOptions.subtitle,
 590
 591         peertubeLink: urlOptions.peertubeLink,
 592
 593         theaterButton: true,
 594         captions: videoCaptions.length !== 0,
 595
 596         videoViewUrl: video.privacy.id !== VideoPrivacy.PRIVATE
 597           ? this.videoService.getVideoViewUrl(video.uuid)
 598           : null,
 599         embedUrl: video.embedUrl,
 600
 601         language: this.localeId,
 602
 603         userWatching: user && user.videosHistoryEnabled === true ? {
 604           url: this.videoService.getUserWatchingVideoUrl(video.uuid),
 605           authorizationHeader: this.authService.getRequestHeaderValue()
 606         } : undefined,
 607
 608         serverUrl: environment.apiUrl,
 609
 610         videoCaptions: playerCaptions
 611       },
 612
 613       webtorrent: {
 614         videoFiles: video.files
 615       }
 616     }
 617
 618     let mode: PlayerMode
 619
 620     if (urlOptions.playerMode) {
 621       if (urlOptions.playerMode === 'p2p-media-loader') mode = 'p2p-media-loader'
 622       else mode = 'webtorrent'
 623     } else {
 624       if (video.hasHlsPlaylist()) mode = 'p2p-media-loader'
 625       else mode = 'webtorrent'
 626     }
 627
 628     if (mode === 'p2p-media-loader') {
 629       const hlsPlaylist = video.getHlsPlaylist()
 630
 631       const p2pMediaLoader = {
 632         playlistUrl: hlsPlaylist.playlistUrl,
 633         segmentsSha256Url: hlsPlaylist.segmentsSha256Url,
 634         redundancyBaseUrls: hlsPlaylist.redundancies.map(r => r.baseUrl),
 635         trackerAnnounce: video.trackerUrls,
 636         videoFiles: hlsPlaylist.files
 637       } as P2PMediaLoaderOptions
 638
 639       Object.assign(options, { p2pMediaLoader })
 640     }
 641
 642     return { playerMode: mode, playerOptions: options }
 643   }
 644
 645   private pausePlayer () {
 646     if (!this.player) return
 647
 648     this.player.pause()
 649   }
 650
 651   private initHotkeys () {
 652     this.hotkeys = [
 653       // These hotkeys are managed by the player
 654       new Hotkey('f', e => e, undefined, this.i18n('Enter/exit fullscreen (requires player focus)')),
 655       new Hotkey('space', e => e, undefined, this.i18n('Play/Pause the video (requires player focus)')),
 656       new Hotkey('m', e => e, undefined, this.i18n('Mute/unmute the video (requires player focus)')),
 657
 658       new Hotkey('0-9', e => e, undefined, this.i18n('Skip to a percentage of the video: 0 is 0% and 9 is 90% (requires player focus)')),
 659
 660       new Hotkey('up', e => e, undefined, this.i18n('Increase the volume (requires player focus)')),
 661       new Hotkey('down', e => e, undefined, this.i18n('Decrease the volume (requires player focus)')),
 662
 663       new Hotkey('right', e => e, undefined, this.i18n('Seek the video forward (requires player focus)')),
 664       new Hotkey('left', e => e, undefined, this.i18n('Seek the video backward (requires player focus)')),
 665
 666       new Hotkey('>', e => e, undefined, this.i18n('Increase playback rate (requires player focus)')),
 667       new Hotkey('<', e => e, undefined, this.i18n('Decrease playback rate (requires player focus)')),
 668
 669       new Hotkey('.', e => e, undefined, this.i18n('Navigate in the video frame by frame (requires player focus)'))
 670     ]
 671
 672     if (this.isUserLoggedIn()) {
 673       this.hotkeys = this.hotkeys.concat([
 674         new Hotkey('shift+l', () => {
 675           this.setLike()
 676           return false
 677         }, undefined, this.i18n('Like the video')),
 678
 679         new Hotkey('shift+d', () => {
 680           this.setDislike()
 681           return false
 682         }, undefined, this.i18n('Dislike the video')),
 683
 684         new Hotkey('shift+s', () => {
 685           this.subscribeButton.subscribed ? this.subscribeButton.unsubscribe() : this.subscribeButton.subscribe()
 686           return false
 687         }, undefined, this.i18n('Subscribe to the account'))
 688       ])
 689     }
 690
 691     this.hotkeysService.add(this.hotkeys)
 692   }
 693 }