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

   1 import { Hotkey, HotkeysService } from 'angular2-hotkeys'
   2 import { forkJoin, Observable, Subscription } from 'rxjs'
   3 import { catchError } from 'rxjs/operators'
   4 import { PlatformLocation } from '@angular/common'
   5 import { ChangeDetectorRef, 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   MarkdownService,
  12   Notifier,
  13   PeerTubeSocket,
  14   RestExtractor,
  15   ScreenService,
  16   ServerService,
  17   UserService
  18 } from '@app/core'
  19 import { HooksService } from '@app/core/plugins/hooks.service'
  20 import { RedirectService } from '@app/core/routing/redirect.service'
  21 import { isXPercentInViewport, scrollToTop } from '@app/helpers'
  22 import { Video, VideoCaptionService, VideoDetails, VideoService } from '@app/shared/shared-main'
  23 import { VideoShareComponent } from '@app/shared/shared-share-modal'
  24 import { SubscribeButtonComponent } from '@app/shared/shared-user-subscription'
  25 import { VideoActionsDisplayType, VideoDownloadComponent } from '@app/shared/shared-video-miniature'
  26 import { VideoPlaylist, VideoPlaylistService } from '@app/shared/shared-video-playlist'
  27 import { MetaService } from '@ngx-meta/core'
  28 import { peertubeLocalStorage } from '@root-helpers/peertube-web-storage'
  29 import { HttpStatusCode } from '@shared/core-utils/miscs/http-error-codes'
  30 import { ServerConfig, ServerErrorCode, UserVideoRateType, VideoCaption, VideoPrivacy, VideoState } from '@shared/models'
  31 import { getStoredP2PEnabled, getStoredTheater } from '../../../assets/player/peertube-player-local-storage'
  32 import {
  33   CustomizationOptions,
  34   P2PMediaLoaderOptions,
  35   PeertubePlayerManager,
  36   PeertubePlayerManagerOptions,
  37   PlayerMode,
  38   videojs
  39 } from '../../../assets/player/peertube-player-manager'
  40 import { isWebRTCDisabled, timeToInt } from '../../../assets/player/utils'
  41 import { environment } from '../../../environments/environment'
  42 import { VideoSupportComponent } from './modal/video-support.component'
  43 import { VideoWatchPlaylistComponent } from './video-watch-playlist.component'
  44
  45 type URLOptions = CustomizationOptions & { playerMode: PlayerMode }
  46
  47 @Component({
  48   selector: 'my-video-watch',
  49   templateUrl: './video-watch.component.html',
  50   styleUrls: [ './video-watch.component.scss' ]
  51 })
  52 export class VideoWatchComponent implements OnInit, OnDestroy {
  53   private static LOCAL_STORAGE_PRIVACY_CONCERN_KEY = 'video-watch-privacy-concern'
  54
  55   @ViewChild('videoWatchPlaylist', { static: true }) videoWatchPlaylist: VideoWatchPlaylistComponent
  56   @ViewChild('videoShareModal') videoShareModal: VideoShareComponent
  57   @ViewChild('videoSupportModal') videoSupportModal: VideoSupportComponent
  58   @ViewChild('subscribeButton') subscribeButton: SubscribeButtonComponent
  59   @ViewChild('videoDownloadModal') videoDownloadModal: VideoDownloadComponent
  60
  61   player: any
  62   playerElement: HTMLVideoElement
  63   theaterEnabled = false
  64   userRating: UserVideoRateType = null
  65   descriptionLoading = false
  66
  67   video: VideoDetails = null
  68   videoCaptions: VideoCaption[] = []
  69
  70   playlistPosition: number
  71   playlist: VideoPlaylist = null
  72
  73   completeDescriptionShown = false
  74   completeVideoDescription: string
  75   shortVideoDescription: string
  76   videoHTMLDescription = ''
  77   likesBarTooltipText = ''
  78   hasAlreadyAcceptedPrivacyConcern = false
  79   remoteServerDown = false
  80   hotkeys: Hotkey[] = []
  81
  82   tooltipLike = ''
  83   tooltipDislike = ''
  84   tooltipSupport = ''
  85   tooltipSaveToPlaylist = ''
  86
  87   videoActionsOptions: VideoActionsDisplayType = {
  88     playlist: false,
  89     download: true,
  90     update: true,
  91     blacklist: true,
  92     delete: true,
  93     report: true,
  94     duplicate: true,
  95     mute: true,
  96     liveInfo: true
  97   }
  98
  99   private nextVideoUuid = ''
 100   private nextVideoTitle = ''
 101   private currentTime: number
 102   private paramsSub: Subscription
 103   private queryParamsSub: Subscription
 104   private configSub: Subscription
 105   private liveVideosSub: Subscription
 106
 107   private serverConfig: ServerConfig
 108
 109   constructor (
 110     private elementRef: ElementRef,
 111     private changeDetector: ChangeDetectorRef,
 112     private route: ActivatedRoute,
 113     private router: Router,
 114     private videoService: VideoService,
 115     private playlistService: VideoPlaylistService,
 116     private confirmService: ConfirmService,
 117     private metaService: MetaService,
 118     private authService: AuthService,
 119     private userService: UserService,
 120     private serverService: ServerService,
 121     private restExtractor: RestExtractor,
 122     private notifier: Notifier,
 123     private markdownService: MarkdownService,
 124     private zone: NgZone,
 125     private redirectService: RedirectService,
 126     private videoCaptionService: VideoCaptionService,
 127     private hotkeysService: HotkeysService,
 128     private hooks: HooksService,
 129     private peertubeSocket: PeerTubeSocket,
 130     private screenService: ScreenService,
 131     private location: PlatformLocation,
 132     @Inject(LOCALE_ID) private localeId: string
 133   ) { }
 134
 135   get user () {
 136     return this.authService.getUser()
 137   }
 138
 139   get anonymousUser () {
 140     return this.userService.getAnonymousUser()
 141   }
 142
 143   async ngOnInit () {
 144     // Hide the tooltips for unlogged users in mobile view, this adds confusion with the popover
 145     if (this.user || !this.screenService.isInMobileView()) {
 146       this.tooltipLike = $localize`Like this video`
 147       this.tooltipDislike = $localize`Dislike this video`
 148       this.tooltipSupport = $localize`Support options for this video`
 149       this.tooltipSaveToPlaylist = $localize`Save to playlist`
 150     }
 151
 152     PeertubePlayerManager.initState()
 153
 154     this.serverConfig = this.serverService.getTmpConfig()
 155
 156     this.configSub = this.serverService.getConfig()
 157         .subscribe(config => {
 158           this.serverConfig = config
 159
 160           if (
 161             isWebRTCDisabled() ||
 162             this.serverConfig.tracker.enabled === false ||
 163             getStoredP2PEnabled() === false ||
 164             peertubeLocalStorage.getItem(VideoWatchComponent.LOCAL_STORAGE_PRIVACY_CONCERN_KEY) === 'true'
 165           ) {
 166             this.hasAlreadyAcceptedPrivacyConcern = true
 167           }
 168         })
 169
 170     this.paramsSub = this.route.params.subscribe(routeParams => {
 171       const videoId = routeParams[ 'videoId' ]
 172       if (videoId) this.loadVideo(videoId)
 173
 174       const playlistId = routeParams[ 'playlistId' ]
 175       if (playlistId) this.loadPlaylist(playlistId)
 176     })
 177
 178     this.queryParamsSub = this.route.queryParams.subscribe(queryParams => {
 179       this.playlistPosition = queryParams[ 'playlistPosition' ]
 180       this.videoWatchPlaylist.updatePlaylistIndex(this.playlistPosition)
 181
 182       const start = queryParams[ 'start' ]
 183       if (this.player && start) this.player.currentTime(parseInt(start, 10))
 184     })
 185
 186     this.initHotkeys()
 187
 188     this.theaterEnabled = getStoredTheater()
 189
 190     this.hooks.runAction('action:video-watch.init', 'video-watch')
 191   }
 192
 193   ngOnDestroy () {
 194     this.flushPlayer()
 195
 196     // Unsubscribe subscriptions
 197     if (this.paramsSub) this.paramsSub.unsubscribe()
 198     if (this.queryParamsSub) this.queryParamsSub.unsubscribe()
 199     if (this.configSub) this.configSub.unsubscribe()
 200     if (this.liveVideosSub) this.liveVideosSub.unsubscribe()
 201
 202     // Unbind hotkeys
 203     this.hotkeysService.remove(this.hotkeys)
 204   }
 205
 206   setLike () {
 207     if (this.isUserLoggedIn() === false) return
 208
 209     // Already liked this video
 210     if (this.userRating === 'like') this.setRating('none')
 211     else this.setRating('like')
 212   }
 213
 214   setDislike () {
 215     if (this.isUserLoggedIn() === false) return
 216
 217     // Already disliked this video
 218     if (this.userRating === 'dislike') this.setRating('none')
 219     else this.setRating('dislike')
 220   }
 221
 222   getRatePopoverText () {
 223     if (this.isUserLoggedIn()) return undefined
 224
 225     return $localize`You need to be <a href="/login">logged in</a> to rate this video.`
 226   }
 227
 228   showMoreDescription () {
 229     if (this.completeVideoDescription === undefined) {
 230       return this.loadCompleteDescription()
 231     }
 232
 233     this.updateVideoDescription(this.completeVideoDescription)
 234     this.completeDescriptionShown = true
 235   }
 236
 237   showLessDescription () {
 238     this.updateVideoDescription(this.shortVideoDescription)
 239     this.completeDescriptionShown = false
 240   }
 241
 242   showDownloadModal () {
 243     this.videoDownloadModal.show(this.video, this.videoCaptions)
 244   }
 245
 246   isVideoDownloadable () {
 247     return this.video && this.video instanceof VideoDetails && this.video.downloadEnabled && !this.video.isLive
 248   }
 249
 250   loadCompleteDescription () {
 251     this.descriptionLoading = true
 252
 253     this.videoService.loadCompleteDescription(this.video.descriptionPath)
 254         .subscribe(
 255           description => {
 256             this.completeDescriptionShown = true
 257             this.descriptionLoading = false
 258
 259             this.shortVideoDescription = this.video.description
 260             this.completeVideoDescription = description
 261
 262             this.updateVideoDescription(this.completeVideoDescription)
 263           },
 264
 265           error => {
 266             this.descriptionLoading = false
 267             this.notifier.error(error.message)
 268           }
 269         )
 270   }
 271
 272   showSupportModal () {
 273     // Check video was playing before opening support modal
 274     const isVideoPlaying = this.isPlaying()
 275
 276     this.pausePlayer()
 277
 278     const modalRef = this.videoSupportModal.show()
 279
 280     modalRef.result.then(() => {
 281       if (isVideoPlaying) {
 282         this.resumePlayer()
 283       }
 284     })
 285   }
 286
 287   showShareModal () {
 288     this.pausePlayer()
 289
 290     this.videoShareModal.show(this.currentTime, this.videoWatchPlaylist.currentPlaylistPosition)
 291   }
 292
 293   isUserLoggedIn () {
 294     return this.authService.isLoggedIn()
 295   }
 296
 297   getVideoTags () {
 298     if (!this.video || Array.isArray(this.video.tags) === false) return []
 299
 300     return this.video.tags
 301   }
 302
 303   onRecommendations (videos: Video[]) {
 304     if (videos.length > 0) {
 305       // The recommended videos's first element should be the next video
 306       const video = videos[0]
 307       this.nextVideoUuid = video.uuid
 308       this.nextVideoTitle = video.name
 309     }
 310   }
 311
 312   onModalOpened () {
 313     this.pausePlayer()
 314   }
 315
 316   onVideoRemoved () {
 317     this.redirectService.redirectToHomepage()
 318   }
 319
 320   declinedPrivacyConcern () {
 321     peertubeLocalStorage.setItem(VideoWatchComponent.LOCAL_STORAGE_PRIVACY_CONCERN_KEY, 'false')
 322     this.hasAlreadyAcceptedPrivacyConcern = false
 323   }
 324
 325   acceptedPrivacyConcern () {
 326     peertubeLocalStorage.setItem(VideoWatchComponent.LOCAL_STORAGE_PRIVACY_CONCERN_KEY, 'true')
 327     this.hasAlreadyAcceptedPrivacyConcern = true
 328   }
 329
 330   isVideoToTranscode () {
 331     return this.video && this.video.state.id === VideoState.TO_TRANSCODE
 332   }
 333
 334   isVideoToImport () {
 335     return this.video && this.video.state.id === VideoState.TO_IMPORT
 336   }
 337
 338   hasVideoScheduledPublication () {
 339     return this.video && this.video.scheduledUpdate !== undefined
 340   }
 341
 342   isLive () {
 343     return !!(this.video?.isLive)
 344   }
 345
 346   isWaitingForLive () {
 347     return this.video?.state.id === VideoState.WAITING_FOR_LIVE
 348   }
 349
 350   isLiveEnded () {
 351     return this.video?.state.id === VideoState.LIVE_ENDED
 352   }
 353
 354   isVideoBlur (video: Video) {
 355     return video.isVideoNSFWForUser(this.user, this.serverConfig)
 356   }
 357
 358   isAutoPlayEnabled () {
 359     return (
 360       (this.user && this.user.autoPlayNextVideo) ||
 361       this.anonymousUser.autoPlayNextVideo
 362     )
 363   }
 364
 365   handleTimestampClicked (timestamp: number) {
 366     if (!this.player || this.video.isLive) return
 367
 368     this.player.currentTime(timestamp)
 369     scrollToTop()
 370   }
 371
 372   isPlaylistAutoPlayEnabled () {
 373     return (
 374       (this.user && this.user.autoPlayNextVideoPlaylist) ||
 375       this.anonymousUser.autoPlayNextVideoPlaylist
 376     )
 377   }
 378
 379   isChannelDisplayNameGeneric () {
 380     const genericChannelDisplayName = [
 381       `Main ${this.video.channel.ownerAccount.name} channel`,
 382       `Default ${this.video.channel.ownerAccount.name} channel`
 383     ]
 384
 385     return genericChannelDisplayName.includes(this.video.channel.displayName)
 386   }
 387
 388   onPlaylistVideoFound (videoId: string) {
 389     this.loadVideo(videoId)
 390   }
 391
 392   private loadVideo (videoId: string) {
 393     // Video did not change
 394     if (this.video && this.video.uuid === videoId) return
 395
 396     if (this.player) this.player.pause()
 397
 398     const videoObs = this.hooks.wrapObsFun(
 399       this.videoService.getVideo.bind(this.videoService),
 400       { videoId },
 401       'video-watch',
 402       'filter:api.video-watch.video.get.params',
 403       'filter:api.video-watch.video.get.result'
 404     )
 405
 406     // Video did change
 407     forkJoin([
 408       videoObs,
 409       this.videoCaptionService.listCaptions(videoId)
 410     ])
 411       .pipe(
 412         // If 400, 403 or 404, the video is private or blocked so redirect to 404
 413         catchError(err => {
 414           if (err.body.errorCode === ServerErrorCode.DOES_NOT_RESPECT_FOLLOW_CONSTRAINTS && err.body.originUrl) {
 415             const search = window.location.search
 416             let originUrl = err.body.originUrl
 417             if (search) originUrl += search
 418
 419             this.confirmService.confirm(
 420               $localize`This video is not available on this instance. Do you want to be redirected on the origin instance: <a href="${originUrl}">${originUrl}</a>?`,
 421               $localize`Redirection`
 422             ).then(res => {
 423               if (res === false) {
 424                 return this.restExtractor.redirectTo404IfNotFound(err, 'video', [
 425                   HttpStatusCode.BAD_REQUEST_400,
 426                   HttpStatusCode.FORBIDDEN_403,
 427                   HttpStatusCode.NOT_FOUND_404
 428                 ])
 429               }
 430
 431               return window.location.href = originUrl
 432             })
 433           }
 434
 435           return this.restExtractor.redirectTo404IfNotFound(err, 'video', [
 436             HttpStatusCode.BAD_REQUEST_400,
 437             HttpStatusCode.FORBIDDEN_403,
 438             HttpStatusCode.NOT_FOUND_404
 439           ])
 440         })
 441       )
 442       .subscribe(([ video, captionsResult ]) => {
 443         const queryParams = this.route.snapshot.queryParams
 444
 445         const urlOptions = {
 446           resume: queryParams.resume,
 447
 448           startTime: queryParams.start,
 449           stopTime: queryParams.stop,
 450
 451           muted: queryParams.muted,
 452           loop: queryParams.loop,
 453           subtitle: queryParams.subtitle,
 454
 455           playerMode: queryParams.mode,
 456           peertubeLink: false
 457         }
 458
 459         this.onVideoFetched(video, captionsResult.data, urlOptions)
 460             .catch(err => this.handleError(err))
 461       })
 462   }
 463
 464   private loadPlaylist (playlistId: string) {
 465     // Playlist did not change
 466     if (this.playlist && this.playlist.uuid === playlistId) return
 467
 468     this.playlistService.getVideoPlaylist(playlistId)
 469       .pipe(
 470         // If 400 or 403, the video is private or blocked so redirect to 404
 471         catchError(err => this.restExtractor.redirectTo404IfNotFound(err, 'video', [
 472           HttpStatusCode.BAD_REQUEST_400,
 473           HttpStatusCode.FORBIDDEN_403,
 474           HttpStatusCode.NOT_FOUND_404
 475         ]))
 476       )
 477       .subscribe(playlist => {
 478         this.playlist = playlist
 479
 480         this.videoWatchPlaylist.loadPlaylistElements(playlist, !this.playlistPosition, this.playlistPosition)
 481       })
 482   }
 483
 484   private updateVideoDescription (description: string) {
 485     this.video.description = description
 486     this.setVideoDescriptionHTML()
 487       .catch(err => console.error(err))
 488   }
 489
 490   private async setVideoDescriptionHTML () {
 491     const html = await this.markdownService.textMarkdownToHTML(this.video.description)
 492     this.videoHTMLDescription = await this.markdownService.processVideoTimestamps(html)
 493   }
 494
 495   private setVideoLikesBarTooltipText () {
 496     this.likesBarTooltipText = `${this.video.likes} likes / ${this.video.dislikes} dislikes`
 497   }
 498
 499   private handleError (err: any) {
 500     const errorMessage: string = typeof err === 'string' ? err : err.message
 501     if (!errorMessage) return
 502
 503     // Display a message in the video player instead of a notification
 504     if (errorMessage.indexOf('from xs param') !== -1) {
 505       this.flushPlayer()
 506       this.remoteServerDown = true
 507       this.changeDetector.detectChanges()
 508
 509       return
 510     }
 511
 512     this.notifier.error(errorMessage)
 513   }
 514
 515   private checkUserRating () {
 516     // Unlogged users do not have ratings
 517     if (this.isUserLoggedIn() === false) return
 518
 519     this.videoService.getUserVideoRating(this.video.id)
 520         .subscribe(
 521           ratingObject => {
 522             if (ratingObject) {
 523               this.userRating = ratingObject.rating
 524             }
 525           },
 526
 527           err => this.notifier.error(err.message)
 528         )
 529   }
 530
 531   private async onVideoFetched (
 532     video: VideoDetails,
 533     videoCaptions: VideoCaption[],
 534     urlOptions: URLOptions
 535   ) {
 536     this.subscribeToLiveEventsIfNeeded(this.video, video)
 537
 538     this.video = video
 539     this.videoCaptions = videoCaptions
 540
 541     // Re init attributes
 542     this.descriptionLoading = false
 543     this.completeDescriptionShown = false
 544     this.remoteServerDown = false
 545     this.currentTime = undefined
 546
 547     if (this.isVideoBlur(this.video)) {
 548       const res = await this.confirmService.confirm(
 549         $localize`This video contains mature or explicit content. Are you sure you want to watch it?`,
 550         $localize`Mature or explicit content`
 551       )
 552       if (res === false) return this.location.back()
 553     }
 554
 555     const videoState = this.video.state.id
 556     if (videoState === VideoState.LIVE_ENDED || videoState === VideoState.WAITING_FOR_LIVE) return
 557
 558     // Flush old player if needed
 559     this.flushPlayer()
 560
 561     // Build video element, because videojs removes it on dispose
 562     const playerElementWrapper = this.elementRef.nativeElement.querySelector('#videojs-wrapper')
 563     this.playerElement = document.createElement('video')
 564     this.playerElement.className = 'video-js vjs-peertube-skin'
 565     this.playerElement.setAttribute('playsinline', 'true')
 566     playerElementWrapper.appendChild(this.playerElement)
 567
 568     const params = {
 569       video: this.video,
 570       videoCaptions,
 571       urlOptions,
 572       user: this.user
 573     }
 574     const { playerMode, playerOptions } = await this.hooks.wrapFun(
 575       this.buildPlayerManagerOptions.bind(this),
 576       params,
 577       'video-watch',
 578       'filter:internal.video-watch.player.build-options.params',
 579       'filter:internal.video-watch.player.build-options.result'
 580     )
 581
 582     this.zone.runOutsideAngular(async () => {
 583       this.player = await PeertubePlayerManager.initialize(playerMode, playerOptions, player => this.player = player)
 584
 585       this.player.on('customError', ({ err }: { err: any }) => this.handleError(err))
 586
 587       this.player.on('timeupdate', () => {
 588         this.currentTime = Math.floor(this.player.currentTime())
 589       })
 590
 591       /**
 592        * replaces this.player.one('ended')
 593        * 'condition()': true to make the upnext functionality trigger,
 594        *                false to disable the upnext functionality
 595        * go to the next video in 'condition()' if you don't want of the timer.
 596        * 'next': function triggered at the end of the timer.
 597        * 'suspended': function used at each clic of the timer checking if we need
 598        * to reset progress and wait until 'suspended' becomes truthy again.
 599        */
 600       this.player.upnext({
 601         timeout: 10000, // 10s
 602         headText: $localize`Up Next`,
 603         cancelText: $localize`Cancel`,
 604         suspendedText: $localize`Autoplay is suspended`,
 605         getTitle: () => this.nextVideoTitle,
 606         next: () => this.zone.run(() => this.autoplayNext()),
 607         condition: () => {
 608           if (this.playlist) {
 609             if (this.isPlaylistAutoPlayEnabled()) {
 610               // upnext will not trigger, and instead the next video will play immediately
 611               this.zone.run(() => this.videoWatchPlaylist.navigateToNextPlaylistVideo())
 612             }
 613           } else if (this.isAutoPlayEnabled()) {
 614             return true // upnext will trigger
 615           }
 616           return false // upnext will not trigger, and instead leave the video stopping
 617         },
 618         suspended: () => {
 619           return (
 620             !isXPercentInViewport(this.player.el(), 80) ||
 621             !document.getElementById('content').contains(document.activeElement)
 622           )
 623         }
 624       })
 625
 626       this.player.one('stopped', () => {
 627         if (this.playlist) {
 628           if (this.isPlaylistAutoPlayEnabled()) this.zone.run(() => this.videoWatchPlaylist.navigateToNextPlaylistVideo())
 629         }
 630       })
 631
 632       this.player.one('ended', () => {
 633         if (this.video.isLive) {
 634           this.video.state.id = VideoState.LIVE_ENDED
 635         }
 636       })
 637
 638       this.player.on('theaterChange', (_: any, enabled: boolean) => {
 639         this.zone.run(() => this.theaterEnabled = enabled)
 640       })
 641
 642       this.hooks.runAction('action:video-watch.player.loaded', 'video-watch', { player: this.player, videojs, video: this.video })
 643     })
 644
 645     this.setVideoDescriptionHTML()
 646     this.setVideoLikesBarTooltipText()
 647
 648     this.setOpenGraphTags()
 649     this.checkUserRating()
 650
 651     this.hooks.runAction('action:video-watch.video.loaded', 'video-watch', { videojs })
 652   }
 653
 654   private autoplayNext () {
 655     if (this.playlist) {
 656       this.zone.run(() => this.videoWatchPlaylist.navigateToNextPlaylistVideo())
 657     } else if (this.nextVideoUuid) {
 658       this.router.navigate([ '/videos/watch', this.nextVideoUuid ])
 659     }
 660   }
 661
 662   private setRating (nextRating: UserVideoRateType) {
 663     const ratingMethods: { [id in UserVideoRateType]: (id: number) => Observable<any> } = {
 664       like: this.videoService.setVideoLike,
 665       dislike: this.videoService.setVideoDislike,
 666       none: this.videoService.unsetVideoLike
 667     }
 668
 669     ratingMethods[nextRating].call(this.videoService, this.video.id)
 670           .subscribe(
 671             () => {
 672               // Update the video like attribute
 673               this.updateVideoRating(this.userRating, nextRating)
 674               this.userRating = nextRating
 675             },
 676
 677             (err: { message: string }) => this.notifier.error(err.message)
 678           )
 679   }
 680
 681   private updateVideoRating (oldRating: UserVideoRateType, newRating: UserVideoRateType) {
 682     let likesToIncrement = 0
 683     let dislikesToIncrement = 0
 684
 685     if (oldRating) {
 686       if (oldRating === 'like') likesToIncrement--
 687       if (oldRating === 'dislike') dislikesToIncrement--
 688     }
 689
 690     if (newRating === 'like') likesToIncrement++
 691     if (newRating === 'dislike') dislikesToIncrement++
 692
 693     this.video.likes += likesToIncrement
 694     this.video.dislikes += dislikesToIncrement
 695
 696     this.video.buildLikeAndDislikePercents()
 697     this.setVideoLikesBarTooltipText()
 698   }
 699
 700   private setOpenGraphTags () {
 701     this.metaService.setTitle(this.video.name)
 702
 703     this.metaService.setTag('og:type', 'video')
 704
 705     this.metaService.setTag('og:title', this.video.name)
 706     this.metaService.setTag('name', this.video.name)
 707
 708     this.metaService.setTag('og:description', this.video.description)
 709     this.metaService.setTag('description', this.video.description)
 710
 711     this.metaService.setTag('og:image', this.video.previewPath)
 712
 713     this.metaService.setTag('og:duration', this.video.duration.toString())
 714
 715     this.metaService.setTag('og:site_name', 'PeerTube')
 716
 717     this.metaService.setTag('og:url', window.location.href)
 718     this.metaService.setTag('url', window.location.href)
 719   }
 720
 721   private isAutoplay () {
 722     // We'll jump to the thread id, so do not play the video
 723     if (this.route.snapshot.params['threadId']) return false
 724
 725     // Otherwise true by default
 726     if (!this.user) return true
 727
 728     // Be sure the autoPlay is set to false
 729     return this.user.autoPlayVideo !== false
 730   }
 731
 732   private flushPlayer () {
 733     // Remove player if it exists
 734     if (this.player) {
 735       try {
 736         this.player.dispose()
 737         this.player = undefined
 738       } catch (err) {
 739         console.error('Cannot dispose player.', err)
 740       }
 741     }
 742   }
 743
 744   private buildPlayerManagerOptions (params: {
 745     video: VideoDetails,
 746     videoCaptions: VideoCaption[],
 747     urlOptions: CustomizationOptions & { playerMode: PlayerMode },
 748     user?: AuthUser
 749   }) {
 750     const { video, videoCaptions, urlOptions, user } = params
 751     const getStartTime = () => {
 752       const byUrl = urlOptions.startTime !== undefined
 753       const byHistory = video.userHistory && (!this.playlist || urlOptions.resume !== undefined)
 754
 755       if (byUrl) return timeToInt(urlOptions.startTime)
 756       if (byHistory) return video.userHistory.currentTime
 757
 758       return 0
 759     }
 760
 761     let startTime = getStartTime()
 762
 763     // If we are at the end of the video, reset the timer
 764     if (video.duration - startTime <= 1) startTime = 0
 765
 766     const playerCaptions = videoCaptions.map(c => ({
 767       label: c.language.label,
 768       language: c.language.id,
 769       src: environment.apiUrl + c.captionPath
 770     }))
 771
 772     const options: PeertubePlayerManagerOptions = {
 773       common: {
 774         autoplay: this.isAutoplay(),
 775         nextVideo: () => this.zone.run(() => this.autoplayNext()),
 776
 777         playerElement: this.playerElement,
 778         onPlayerElementChange: (element: HTMLVideoElement) => this.playerElement = element,
 779
 780         videoDuration: video.duration,
 781         enableHotkeys: true,
 782         inactivityTimeout: 2500,
 783         poster: video.previewUrl,
 784
 785         startTime,
 786         stopTime: urlOptions.stopTime,
 787         controls: urlOptions.controls,
 788         muted: urlOptions.muted,
 789         loop: urlOptions.loop,
 790         subtitle: urlOptions.subtitle,
 791
 792         peertubeLink: urlOptions.peertubeLink,
 793
 794         theaterButton: true,
 795         captions: videoCaptions.length !== 0,
 796
 797         videoViewUrl: video.privacy.id !== VideoPrivacy.PRIVATE
 798           ? this.videoService.getVideoViewUrl(video.uuid)
 799           : null,
 800         embedUrl: video.embedUrl,
 801
 802         isLive: video.isLive,
 803
 804         language: this.localeId,
 805
 806         userWatching: user && user.videosHistoryEnabled === true ? {
 807           url: this.videoService.getUserWatchingVideoUrl(video.uuid),
 808           authorizationHeader: this.authService.getRequestHeaderValue()
 809         } : undefined,
 810
 811         serverUrl: environment.apiUrl,
 812
 813         videoCaptions: playerCaptions
 814       },
 815
 816       webtorrent: {
 817         videoFiles: video.files
 818       }
 819     }
 820
 821     let mode: PlayerMode
 822
 823     if (urlOptions.playerMode) {
 824       if (urlOptions.playerMode === 'p2p-media-loader') mode = 'p2p-media-loader'
 825       else mode = 'webtorrent'
 826     } else {
 827       if (video.hasHlsPlaylist()) mode = 'p2p-media-loader'
 828       else mode = 'webtorrent'
 829     }
 830
 831     // p2p-media-loader needs TextEncoder, try to fallback on WebTorrent
 832     if (typeof TextEncoder === 'undefined') {
 833       mode = 'webtorrent'
 834     }
 835
 836     if (mode === 'p2p-media-loader') {
 837       const hlsPlaylist = video.getHlsPlaylist()
 838
 839       const p2pMediaLoader = {
 840         playlistUrl: hlsPlaylist.playlistUrl,
 841         segmentsSha256Url: hlsPlaylist.segmentsSha256Url,
 842         redundancyBaseUrls: hlsPlaylist.redundancies.map(r => r.baseUrl),
 843         trackerAnnounce: video.trackerUrls,
 844         videoFiles: hlsPlaylist.files
 845       } as P2PMediaLoaderOptions
 846
 847       Object.assign(options, { p2pMediaLoader })
 848     }
 849
 850     return { playerMode: mode, playerOptions: options }
 851   }
 852
 853   private pausePlayer () {
 854     if (!this.player) return
 855
 856     this.player.pause()
 857   }
 858
 859   private resumePlayer () {
 860     if (!this.player) return
 861
 862     this.player.play()
 863   }
 864
 865   private isPlaying () {
 866     if (!this.player) return
 867
 868     return !this.player.paused()
 869   }
 870
 871   private async subscribeToLiveEventsIfNeeded (oldVideo: VideoDetails, newVideo: VideoDetails) {
 872     if (!this.liveVideosSub) {
 873       this.liveVideosSub = this.buildLiveEventsSubscription()
 874     }
 875
 876     if (oldVideo && oldVideo.id !== newVideo.id) {
 877       await this.peertubeSocket.unsubscribeLiveVideos(oldVideo.id)
 878     }
 879
 880     if (!newVideo.isLive) return
 881
 882     await this.peertubeSocket.subscribeToLiveVideosSocket(newVideo.id)
 883   }
 884
 885   private buildLiveEventsSubscription () {
 886     return this.peertubeSocket.getLiveVideosObservable()
 887       .subscribe(({ type, payload }) => {
 888         if (type === 'state-change') return this.handleLiveStateChange(payload.state)
 889         if (type === 'views-change') return this.handleLiveViewsChange(payload.views)
 890       })
 891   }
 892
 893   private handleLiveStateChange (newState: VideoState) {
 894     if (newState !== VideoState.PUBLISHED) return
 895
 896     const videoState = this.video.state.id
 897     if (videoState !== VideoState.WAITING_FOR_LIVE && videoState !== VideoState.LIVE_ENDED) return
 898
 899     console.log('Loading video after live update.')
 900
 901     const videoUUID = this.video.uuid
 902
 903     // Reset to refetch the video
 904     this.video = undefined
 905     this.loadVideo(videoUUID)
 906   }
 907
 908   private handleLiveViewsChange (newViews: number) {
 909     if (!this.video) {
 910       console.error('Cannot update video live views because video is no defined.')
 911       return
 912     }
 913
 914     console.log('Updating live views.')
 915
 916     this.video.views = newViews
 917   }
 918
 919   private initHotkeys () {
 920     this.hotkeys = [
 921       // These hotkeys are managed by the player
 922       new Hotkey('f', e => e, undefined, $localize`Enter/exit fullscreen (requires player focus)`),
 923       new Hotkey('space', e => e, undefined, $localize`Play/Pause the video (requires player focus)`),
 924       new Hotkey('m', e => e, undefined, $localize`Mute/unmute the video (requires player focus)`),
 925
 926       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)`),
 927
 928       new Hotkey('up', e => e, undefined, $localize`Increase the volume (requires player focus)`),
 929       new Hotkey('down', e => e, undefined, $localize`Decrease the volume (requires player focus)`),
 930
 931       new Hotkey('right', e => e, undefined, $localize`Seek the video forward (requires player focus)`),
 932       new Hotkey('left', e => e, undefined, $localize`Seek the video backward (requires player focus)`),
 933
 934       new Hotkey('>', e => e, undefined, $localize`Increase playback rate (requires player focus)`),
 935       new Hotkey('<', e => e, undefined, $localize`Decrease playback rate (requires player focus)`),
 936
 937       new Hotkey('.', e => e, undefined, $localize`Navigate in the video frame by frame (requires player focus)`)
 938     ]
 939
 940     if (this.isUserLoggedIn()) {
 941       this.hotkeys = this.hotkeys.concat([
 942         new Hotkey('shift+l', () => {
 943           this.setLike()
 944           return false
 945         }, undefined, $localize`Like the video`),
 946
 947         new Hotkey('shift+d', () => {
 948           this.setDislike()
 949           return false
 950         }, undefined, $localize`Dislike the video`),
 951
 952         new Hotkey('shift+s', () => {
 953           this.subscribeButton.subscribed ? this.subscribeButton.unsubscribe() : this.subscribeButton.subscribe()
 954           return false
 955         }, undefined, $localize`Subscribe to the account`)
 956       ])
 957     }
 958
 959     this.hotkeysService.add(this.hotkeys)
 960   }
 961 }