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 { Notifier, ServerService } from '@app/core'
   9 import { forkJoin, Subscription } from 'rxjs'
  10 import { Hotkey, HotkeysService } from 'angular2-hotkeys'
  11 import { UserVideoRateType, VideoCaption, VideoPlaylistPrivacy, 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 { VideoDownloadComponent } from './modal/video-download.component'
  17 import { VideoReportComponent } from './modal/video-report.component'
  18 import { VideoShareComponent } from './modal/video-share.component'
  19 import { VideoBlacklistComponent } from './modal/video-blacklist.component'
  20 import { SubscribeButtonComponent } from '@app/shared/user-subscription/subscribe-button.component'
  21 import { I18n } from '@ngx-translate/i18n-polyfill'
  22 import { environment } from '../../../environments/environment'
  23 import { VideoCaptionService } from '@app/shared/video-caption'
  24 import { MarkdownService } from '@app/shared/renderer'
  25 import {
  26   P2PMediaLoaderOptions,
  27   PeertubePlayerManager,
  28   PeertubePlayerManagerOptions,
  29   PlayerMode
  30 } from '../../../assets/player/peertube-player-manager'
  31 import { VideoPlaylist } from '@app/shared/video-playlist/video-playlist.model'
  32 import { VideoPlaylistService } from '@app/shared/video-playlist/video-playlist.service'
  33 import { ComponentPagination } from '@app/shared/rest/component-pagination.model'
  34 import { Video } from '@app/shared/video/video.model'
  35
  36 @Component({
  37   selector: 'my-video-watch',
  38   templateUrl: './video-watch.component.html',
  39   styleUrls: [ './video-watch.component.scss' ]
  40 })
  41 export class VideoWatchComponent implements OnInit, OnDestroy {
  42   private static LOCAL_STORAGE_PRIVACY_CONCERN_KEY = 'video-watch-privacy-concern'
  43
  44   @ViewChild('videoDownloadModal') videoDownloadModal: VideoDownloadComponent
  45   @ViewChild('videoShareModal') videoShareModal: VideoShareComponent
  46   @ViewChild('videoReportModal') videoReportModal: VideoReportComponent
  47   @ViewChild('videoSupportModal') videoSupportModal: VideoSupportComponent
  48   @ViewChild('videoBlacklistModal') videoBlacklistModal: VideoBlacklistComponent
  49   @ViewChild('subscribeButton') subscribeButton: SubscribeButtonComponent
  50
  51   player: any
  52   playerElement: HTMLVideoElement
  53   theaterEnabled = false
  54   userRating: UserVideoRateType = null
  55   video: VideoDetails = null
  56   descriptionLoading = false
  57
  58   playlist: VideoPlaylist = null
  59   playlistVideos: Video[] = []
  60   playlistPagination: ComponentPagination = {
  61     currentPage: 1,
  62     itemsPerPage: 30,
  63     totalItems: null
  64   }
  65   noPlaylistVideos = false
  66   currentPlaylistPosition = 1
  67
  68   completeDescriptionShown = false
  69   completeVideoDescription: string
  70   shortVideoDescription: string
  71   videoHTMLDescription = ''
  72   likesBarTooltipText = ''
  73   hasAlreadyAcceptedPrivacyConcern = false
  74   remoteServerDown = false
  75   hotkeys: Hotkey[]
  76
  77   private currentTime: number
  78   private paramsSub: Subscription
  79   private queryParamsSub: Subscription
  80
  81   constructor (
  82     private elementRef: ElementRef,
  83     private changeDetector: ChangeDetectorRef,
  84     private route: ActivatedRoute,
  85     private router: Router,
  86     private videoService: VideoService,
  87     private playlistService: VideoPlaylistService,
  88     private videoBlacklistService: VideoBlacklistService,
  89     private confirmService: ConfirmService,
  90     private metaService: MetaService,
  91     private authService: AuthService,
  92     private serverService: ServerService,
  93     private restExtractor: RestExtractor,
  94     private notifier: Notifier,
  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     @Inject(LOCALE_ID) private localeId: string
 102   ) {}
 103
 104   get user () {
 105     return this.authService.getUser()
 106   }
 107
 108   ngOnInit () {
 109     if (
 110       !!((window as any).RTCPeerConnection || (window as any).mozRTCPeerConnection || (window as any).webkitRTCPeerConnection) === false ||
 111       peertubeLocalStorage.getItem(VideoWatchComponent.LOCAL_STORAGE_PRIVACY_CONCERN_KEY) === 'true'
 112     ) {
 113       this.hasAlreadyAcceptedPrivacyConcern = true
 114     }
 115
 116     this.paramsSub = this.route.params.subscribe(routeParams => {
 117       const videoId = routeParams[ 'videoId' ]
 118       if (videoId) this.loadVideo(videoId)
 119
 120       const playlistId = routeParams[ 'playlistId' ]
 121       if (playlistId) this.loadPlaylist(playlistId)
 122     })
 123
 124     this.queryParamsSub = this.route.queryParams.subscribe(queryParams => {
 125       const videoId = queryParams[ 'videoId' ]
 126       if (videoId) this.loadVideo(videoId)
 127     })
 128
 129     this.hotkeys = [
 130       new Hotkey('shift+l', (event: KeyboardEvent): boolean => {
 131         this.setLike()
 132         return false
 133       }, undefined, this.i18n('Like the video')),
 134       new Hotkey('shift+d', (event: KeyboardEvent): boolean => {
 135         this.setDislike()
 136         return false
 137       }, undefined, this.i18n('Dislike the video')),
 138       new Hotkey('shift+s', (event: KeyboardEvent): boolean => {
 139         this.subscribeButton.subscribed ?
 140           this.subscribeButton.unsubscribe() :
 141           this.subscribeButton.subscribe()
 142         return false
 143       }, undefined, this.i18n('Subscribe to the account'))
 144     ]
 145     if (this.isUserLoggedIn()) this.hotkeysService.add(this.hotkeys)
 146   }
 147
 148   ngOnDestroy () {
 149     this.flushPlayer()
 150
 151     // Unsubscribe subscriptions
 152     if (this.paramsSub) this.paramsSub.unsubscribe()
 153     if (this.queryParamsSub) this.queryParamsSub.unsubscribe()
 154
 155     // Unbind hotkeys
 156     if (this.isUserLoggedIn()) this.hotkeysService.remove(this.hotkeys)
 157   }
 158
 159   setLike () {
 160     if (this.isUserLoggedIn() === false) return
 161     if (this.userRating === 'like') {
 162       // Already liked this video
 163       this.setRating('none')
 164     } else {
 165       this.setRating('like')
 166     }
 167   }
 168
 169   setDislike () {
 170     if (this.isUserLoggedIn() === false) return
 171     if (this.userRating === 'dislike') {
 172       // Already disliked this video
 173       this.setRating('none')
 174     } else {
 175       this.setRating('dislike')
 176     }
 177   }
 178
 179   showMoreDescription () {
 180     if (this.completeVideoDescription === undefined) {
 181       return this.loadCompleteDescription()
 182     }
 183
 184     this.updateVideoDescription(this.completeVideoDescription)
 185     this.completeDescriptionShown = true
 186   }
 187
 188   showLessDescription () {
 189     this.updateVideoDescription(this.shortVideoDescription)
 190     this.completeDescriptionShown = false
 191   }
 192
 193   loadCompleteDescription () {
 194     this.descriptionLoading = true
 195
 196     this.videoService.loadCompleteDescription(this.video.descriptionPath)
 197         .subscribe(
 198           description => {
 199             this.completeDescriptionShown = true
 200             this.descriptionLoading = false
 201
 202             this.shortVideoDescription = this.video.description
 203             this.completeVideoDescription = description
 204
 205             this.updateVideoDescription(this.completeVideoDescription)
 206           },
 207
 208           error => {
 209             this.descriptionLoading = false
 210             this.notifier.error(error.message)
 211           }
 212         )
 213   }
 214
 215   showReportModal (event: Event) {
 216     event.preventDefault()
 217     this.videoReportModal.show()
 218   }
 219
 220   showSupportModal () {
 221     this.videoSupportModal.show()
 222   }
 223
 224   showShareModal () {
 225     this.videoShareModal.show(this.currentTime)
 226   }
 227
 228   showDownloadModal (event: Event) {
 229     event.preventDefault()
 230     this.videoDownloadModal.show()
 231   }
 232
 233   showBlacklistModal (event: Event) {
 234     event.preventDefault()
 235     this.videoBlacklistModal.show()
 236   }
 237
 238   async unblacklistVideo (event: Event) {
 239     event.preventDefault()
 240
 241     const confirmMessage = this.i18n(
 242       'Do you really want to remove this video from the blacklist? It will be available again in the videos list.'
 243     )
 244
 245     const res = await this.confirmService.confirm(confirmMessage, this.i18n('Unblacklist'))
 246     if (res === false) return
 247
 248     this.videoBlacklistService.removeVideoFromBlacklist(this.video.id).subscribe(
 249       () => {
 250         this.notifier.success(this.i18n('Video {{name}} removed from the blacklist.', { name: this.video.name }))
 251
 252         this.video.blacklisted = false
 253         this.video.blacklistedReason = null
 254       },
 255
 256       err => this.notifier.error(err.message)
 257     )
 258   }
 259
 260   isUserLoggedIn () {
 261     return this.authService.isLoggedIn()
 262   }
 263
 264   isVideoUpdatable () {
 265     return this.video.isUpdatableBy(this.authService.getUser())
 266   }
 267
 268   isVideoBlacklistable () {
 269     return this.video.isBlackistableBy(this.user)
 270   }
 271
 272   isVideoUnblacklistable () {
 273     return this.video.isUnblacklistableBy(this.user)
 274   }
 275
 276   getVideoTags () {
 277     if (!this.video || Array.isArray(this.video.tags) === false) return []
 278
 279     return this.video.tags
 280   }
 281
 282   isVideoRemovable () {
 283     return this.video.isRemovableBy(this.authService.getUser())
 284   }
 285
 286   async removeVideo (event: Event) {
 287     event.preventDefault()
 288
 289     const res = await this.confirmService.confirm(this.i18n('Do you really want to delete this video?'), this.i18n('Delete'))
 290     if (res === false) return
 291
 292     this.videoService.removeVideo(this.video.id)
 293         .subscribe(
 294           () => {
 295             this.notifier.success(this.i18n('Video {{videoName}} deleted.', { videoName: this.video.name }))
 296
 297             // Go back to the video-list.
 298             this.redirectService.redirectToHomepage()
 299           },
 300
 301           error => this.notifier.error(error.message)
 302         )
 303   }
 304
 305   acceptedPrivacyConcern () {
 306     peertubeLocalStorage.setItem(VideoWatchComponent.LOCAL_STORAGE_PRIVACY_CONCERN_KEY, 'true')
 307     this.hasAlreadyAcceptedPrivacyConcern = true
 308   }
 309
 310   isVideoToTranscode () {
 311     return this.video && this.video.state.id === VideoState.TO_TRANSCODE
 312   }
 313
 314   isVideoDownloadable () {
 315     return this.video && this.video.downloadEnabled
 316   }
 317
 318   isVideoToImport () {
 319     return this.video && this.video.state.id === VideoState.TO_IMPORT
 320   }
 321
 322   hasVideoScheduledPublication () {
 323     return this.video && this.video.scheduledUpdate !== undefined
 324   }
 325
 326   isVideoBlur (video: Video) {
 327     return video.isVideoNSFWForUser(this.user, this.serverService.getConfig())
 328   }
 329
 330   isPlaylistOwned () {
 331     return this.playlist.isLocal === true && this.playlist.ownerAccount.name === this.user.username
 332   }
 333
 334   isUnlistedPlaylist () {
 335     return this.playlist.privacy.id === VideoPlaylistPrivacy.UNLISTED
 336   }
 337
 338   isPrivatePlaylist () {
 339     return this.playlist.privacy.id === VideoPlaylistPrivacy.PRIVATE
 340   }
 341
 342   isPublicPlaylist () {
 343     return this.playlist.privacy.id === VideoPlaylistPrivacy.PUBLIC
 344   }
 345
 346   onPlaylistVideosNearOfBottom () {
 347     // Last page
 348     if (this.playlistPagination.totalItems <= (this.playlistPagination.currentPage * this.playlistPagination.itemsPerPage)) return
 349
 350     this.playlistPagination.currentPage += 1
 351     this.loadPlaylistElements(false)
 352   }
 353
 354   onElementRemoved (video: Video) {
 355     this.playlistVideos = this.playlistVideos.filter(v => v.id !== video.id)
 356
 357     this.playlistPagination.totalItems--
 358   }
 359
 360   private loadVideo (videoId: string) {
 361     // Video did not change
 362     if (this.video && this.video.uuid === videoId) return
 363
 364     if (this.player) this.player.pause()
 365
 366     // Video did change
 367     forkJoin(
 368       this.videoService.getVideo(videoId),
 369       this.videoCaptionService.listCaptions(videoId)
 370     )
 371       .pipe(
 372         // If 401, the video is private or blacklisted so redirect to 404
 373         catchError(err => this.restExtractor.redirectTo404IfNotFound(err, [ 400, 401, 403, 404 ]))
 374       )
 375       .subscribe(([ video, captionsResult ]) => {
 376         const queryParams = this.route.snapshot.queryParams
 377         const startTime = queryParams.start
 378         const stopTime = queryParams.stop
 379         const subtitle = queryParams.subtitle
 380         const playerMode = queryParams.mode
 381
 382         this.onVideoFetched(video, captionsResult.data, { startTime, stopTime, subtitle, playerMode })
 383             .catch(err => this.handleError(err))
 384       })
 385   }
 386
 387   private loadPlaylist (playlistId: string) {
 388     // Playlist did not change
 389     if (this.playlist && this.playlist.uuid === playlistId) return
 390
 391     this.playlistService.getVideoPlaylist(playlistId)
 392       .pipe(
 393         // If 401, the video is private or blacklisted so redirect to 404
 394         catchError(err => this.restExtractor.redirectTo404IfNotFound(err, [ 400, 401, 403, 404 ]))
 395       )
 396       .subscribe(playlist => {
 397         this.playlist = playlist
 398
 399         const videoId = this.route.snapshot.queryParams['videoId']
 400         this.loadPlaylistElements(!videoId)
 401       })
 402   }
 403
 404   private loadPlaylistElements (redirectToFirst = false) {
 405     this.videoService.getPlaylistVideos(this.playlist.uuid, this.playlistPagination)
 406         .subscribe(({ totalVideos, videos }) => {
 407           this.playlistVideos = this.playlistVideos.concat(videos)
 408           this.playlistPagination.totalItems = totalVideos
 409
 410           if (totalVideos === 0) {
 411             this.noPlaylistVideos = true
 412             return
 413           }
 414
 415           this.updatePlaylistIndex()
 416
 417           if (redirectToFirst) {
 418             const extras = {
 419               queryParams: { videoId: this.playlistVideos[ 0 ].uuid },
 420               replaceUrl: true
 421             }
 422             this.router.navigate([], extras)
 423           }
 424         })
 425   }
 426
 427   private updateVideoDescription (description: string) {
 428     this.video.description = description
 429     this.setVideoDescriptionHTML()
 430   }
 431
 432   private async setVideoDescriptionHTML () {
 433     this.videoHTMLDescription = await this.markdownService.textMarkdownToHTML(this.video.description)
 434   }
 435
 436   private setVideoLikesBarTooltipText () {
 437     this.likesBarTooltipText = this.i18n('{{likesNumber}} likes / {{dislikesNumber}} dislikes', {
 438       likesNumber: this.video.likes,
 439       dislikesNumber: this.video.dislikes
 440     })
 441   }
 442
 443   private handleError (err: any) {
 444     const errorMessage: string = typeof err === 'string' ? err : err.message
 445     if (!errorMessage) return
 446
 447     // Display a message in the video player instead of a notification
 448     if (errorMessage.indexOf('from xs param') !== -1) {
 449       this.flushPlayer()
 450       this.remoteServerDown = true
 451       this.changeDetector.detectChanges()
 452
 453       return
 454     }
 455
 456     this.notifier.error(errorMessage)
 457   }
 458
 459   private checkUserRating () {
 460     // Unlogged users do not have ratings
 461     if (this.isUserLoggedIn() === false) return
 462
 463     this.videoService.getUserVideoRating(this.video.id)
 464         .subscribe(
 465           ratingObject => {
 466             if (ratingObject) {
 467               this.userRating = ratingObject.rating
 468             }
 469           },
 470
 471           err => this.notifier.error(err.message)
 472         )
 473   }
 474
 475   private async onVideoFetched (
 476     video: VideoDetails,
 477     videoCaptions: VideoCaption[],
 478     urlOptions: { startTime?: number, stopTime?: number, subtitle?: string, playerMode?: string }
 479   ) {
 480     this.video = video
 481
 482     // Re init attributes
 483     this.descriptionLoading = false
 484     this.completeDescriptionShown = false
 485     this.remoteServerDown = false
 486     this.currentTime = undefined
 487
 488     this.updatePlaylistIndex()
 489
 490     let startTime = urlOptions.startTime || (this.video.userHistory ? this.video.userHistory.currentTime : 0)
 491     // If we are at the end of the video, reset the timer
 492     if (this.video.duration - startTime <= 1) startTime = 0
 493
 494     if (this.isVideoBlur(this.video)) {
 495       const res = await this.confirmService.confirm(
 496         this.i18n('This video contains mature or explicit content. Are you sure you want to watch it?'),
 497         this.i18n('Mature or explicit content')
 498       )
 499       if (res === false) return this.redirectService.redirectToHomepage()
 500     }
 501
 502     // Flush old player if needed
 503     this.flushPlayer()
 504
 505     // Build video element, because videojs remove it on dispose
 506     const playerElementWrapper = this.elementRef.nativeElement.querySelector('#videojs-wrapper')
 507     this.playerElement = document.createElement('video')
 508     this.playerElement.className = 'video-js vjs-peertube-skin'
 509     this.playerElement.setAttribute('playsinline', 'true')
 510     playerElementWrapper.appendChild(this.playerElement)
 511
 512     const playerCaptions = videoCaptions.map(c => ({
 513       label: c.language.label,
 514       language: c.language.id,
 515       src: environment.apiUrl + c.captionPath
 516     }))
 517
 518     const options: PeertubePlayerManagerOptions = {
 519       common: {
 520         autoplay: this.isAutoplay(),
 521
 522         playerElement: this.playerElement,
 523         onPlayerElementChange: (element: HTMLVideoElement) => this.playerElement = element,
 524
 525         videoDuration: this.video.duration,
 526         enableHotkeys: true,
 527         inactivityTimeout: 2500,
 528         poster: this.video.previewUrl,
 529         startTime,
 530         stopTime: urlOptions.stopTime,
 531
 532         theaterMode: true,
 533         captions: videoCaptions.length !== 0,
 534         peertubeLink: false,
 535
 536         videoViewUrl: this.video.privacy.id !== VideoPrivacy.PRIVATE ? this.videoService.getVideoViewUrl(this.video.uuid) : null,
 537         embedUrl: this.video.embedUrl,
 538
 539         language: this.localeId,
 540
 541         subtitle: urlOptions.subtitle,
 542
 543         userWatching: this.user && this.user.videosHistoryEnabled === true ? {
 544           url: this.videoService.getUserWatchingVideoUrl(this.video.uuid),
 545           authorizationHeader: this.authService.getRequestHeaderValue()
 546         } : undefined,
 547
 548         serverUrl: environment.apiUrl,
 549
 550         videoCaptions: playerCaptions
 551       },
 552
 553       webtorrent: {
 554         videoFiles: this.video.files
 555       }
 556     }
 557
 558     const mode: PlayerMode = urlOptions.playerMode === 'p2p-media-loader' ? 'p2p-media-loader' : 'webtorrent'
 559
 560     if (mode === 'p2p-media-loader') {
 561       const hlsPlaylist = this.video.getHlsPlaylist()
 562
 563       const p2pMediaLoader = {
 564         playlistUrl: hlsPlaylist.playlistUrl,
 565         segmentsSha256Url: hlsPlaylist.segmentsSha256Url,
 566         redundancyBaseUrls: hlsPlaylist.redundancies.map(r => r.baseUrl),
 567         trackerAnnounce: this.video.trackerUrls,
 568         videoFiles: this.video.files
 569       } as P2PMediaLoaderOptions
 570
 571       Object.assign(options, { p2pMediaLoader })
 572     }
 573
 574     this.zone.runOutsideAngular(async () => {
 575       this.player = await PeertubePlayerManager.initialize(mode, options)
 576       this.theaterEnabled = this.player.theaterEnabled
 577
 578       this.player.on('customError', ({ err }: { err: any }) => this.handleError(err))
 579
 580       this.player.on('timeupdate', () => {
 581         this.currentTime = Math.floor(this.player.currentTime())
 582       })
 583
 584       this.player.one('ended', () => {
 585         if (this.playlist) {
 586           this.zone.run(() => this.navigateToNextPlaylistVideo())
 587         }
 588       })
 589
 590       this.player.one('stopped', () => {
 591         if (this.playlist) {
 592           this.zone.run(() => this.navigateToNextPlaylistVideo())
 593         }
 594       })
 595
 596       this.player.on('theaterChange', (_: any, enabled: boolean) => {
 597         this.zone.run(() => this.theaterEnabled = enabled)
 598       })
 599     })
 600
 601     this.setVideoDescriptionHTML()
 602     this.setVideoLikesBarTooltipText()
 603
 604     this.setOpenGraphTags()
 605     this.checkUserRating()
 606   }
 607
 608   private setRating (nextRating: UserVideoRateType) {
 609     let method
 610     switch (nextRating) {
 611       case 'like':
 612         method = this.videoService.setVideoLike
 613         break
 614       case 'dislike':
 615         method = this.videoService.setVideoDislike
 616         break
 617       case 'none':
 618         method = this.videoService.unsetVideoLike
 619         break
 620     }
 621
 622     method.call(this.videoService, this.video.id)
 623           .subscribe(
 624             () => {
 625               // Update the video like attribute
 626               this.updateVideoRating(this.userRating, nextRating)
 627               this.userRating = nextRating
 628             },
 629
 630             (err: { message: string }) => this.notifier.error(err.message)
 631           )
 632   }
 633
 634   private updateVideoRating (oldRating: UserVideoRateType, newRating: UserVideoRateType) {
 635     let likesToIncrement = 0
 636     let dislikesToIncrement = 0
 637
 638     if (oldRating) {
 639       if (oldRating === 'like') likesToIncrement--
 640       if (oldRating === 'dislike') dislikesToIncrement--
 641     }
 642
 643     if (newRating === 'like') likesToIncrement++
 644     if (newRating === 'dislike') dislikesToIncrement++
 645
 646     this.video.likes += likesToIncrement
 647     this.video.dislikes += dislikesToIncrement
 648
 649     this.video.buildLikeAndDislikePercents()
 650     this.setVideoLikesBarTooltipText()
 651   }
 652
 653   private updatePlaylistIndex () {
 654     if (this.playlistVideos.length === 0 || !this.video) return
 655
 656     for (const video of this.playlistVideos) {
 657       if (video.id === this.video.id) {
 658         this.currentPlaylistPosition = video.playlistElement.position
 659         return
 660       }
 661     }
 662
 663     // Load more videos to find our video
 664     this.onPlaylistVideosNearOfBottom()
 665   }
 666
 667   private setOpenGraphTags () {
 668     this.metaService.setTitle(this.video.name)
 669
 670     this.metaService.setTag('og:type', 'video')
 671
 672     this.metaService.setTag('og:title', this.video.name)
 673     this.metaService.setTag('name', this.video.name)
 674
 675     this.metaService.setTag('og:description', this.video.description)
 676     this.metaService.setTag('description', this.video.description)
 677
 678     this.metaService.setTag('og:image', this.video.previewPath)
 679
 680     this.metaService.setTag('og:duration', this.video.duration.toString())
 681
 682     this.metaService.setTag('og:site_name', 'PeerTube')
 683
 684     this.metaService.setTag('og:url', window.location.href)
 685     this.metaService.setTag('url', window.location.href)
 686   }
 687
 688   private isAutoplay () {
 689     // We'll jump to the thread id, so do not play the video
 690     if (this.route.snapshot.params['threadId']) return false
 691
 692     // Otherwise true by default
 693     if (!this.user) return true
 694
 695     // Be sure the autoPlay is set to false
 696     return this.user.autoPlayVideo !== false
 697   }
 698
 699   private flushPlayer () {
 700     // Remove player if it exists
 701     if (this.player) {
 702       this.player.dispose()
 703       this.player = undefined
 704     }
 705   }
 706
 707   private navigateToNextPlaylistVideo () {
 708     if (this.currentPlaylistPosition < this.playlistPagination.totalItems) {
 709       const next = this.playlistVideos.find(v => v.playlistElement.position === this.currentPlaylistPosition + 1)
 710
 711       const start = next.playlistElement.startTimestamp
 712       const stop = next.playlistElement.stopTimestamp
 713       this.router.navigate([],{ queryParams: { videoId: next.uuid, start, stop } })
 714     }
 715   }
 716 }