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 { SupportModalComponent } from '@app/shared/shared-support-modal'
  25 import { SubscribeButtonComponent } from '@app/shared/shared-user-subscription'
  26 import { VideoActionsDisplayType, VideoDownloadComponent } from '@app/shared/shared-video-miniature'
  27 import { VideoPlaylist, VideoPlaylistService } from '@app/shared/shared-video-playlist'
  28 import { MetaService } from '@ngx-meta/core'
  29 import { peertubeLocalStorage } from '@root-helpers/peertube-web-storage'
  30 import { HttpStatusCode } from '@shared/core-utils/miscs/http-error-codes'
  31 import { ServerConfig, ServerErrorCode, UserVideoRateType, VideoCaption, VideoPrivacy, VideoState } from '@shared/models'
  32 import {
  33   cleanupVideoWatch,
  34   getStoredP2PEnabled,
  35   getStoredTheater,
  36   getStoredVideoWatchHistory
  37 } from '../../../assets/player/peertube-player-local-storage'
  38 import {
  39   CustomizationOptions,
  40   P2PMediaLoaderOptions,
  41   PeertubePlayerManager,
  42   PeertubePlayerManagerOptions,
  43   PlayerMode,
  44   videojs
  45 } from '../../../assets/player/peertube-player-manager'
  46 import { isWebRTCDisabled, timeToInt } from '../../../assets/player/utils'
  47 import { environment } from '../../../environments/environment'
  48 import { VideoWatchPlaylistComponent } from './video-watch-playlist.component'
  49
  50 type URLOptions = CustomizationOptions & { playerMode: PlayerMode }
  51
  52 @Component({
  53   selector: 'my-video-watch',
  54   templateUrl: './video-watch.component.html',
  55   styleUrls: [ './video-watch.component.scss' ]
  56 })
  57 export class VideoWatchComponent implements OnInit, OnDestroy {
  58   private static LOCAL_STORAGE_PRIVACY_CONCERN_KEY = 'video-watch-privacy-concern'
  59
  60   @ViewChild('videoWatchPlaylist', { static: true }) videoWatchPlaylist: VideoWatchPlaylistComponent
  61   @ViewChild('videoShareModal') videoShareModal: VideoShareComponent
  62   @ViewChild('supportModal') supportModal: SupportModalComponent
  63   @ViewChild('subscribeButton') subscribeButton: SubscribeButtonComponent
  64   @ViewChild('videoDownloadModal') videoDownloadModal: VideoDownloadComponent
  65
  66   player: any
  67   playerElement: HTMLVideoElement
  68
  69   theaterEnabled = false
  70
  71   userRating: UserVideoRateType = null
  72
  73   playerPlaceholderImgSrc: string
  74
  75   video: VideoDetails = null
  76   videoCaptions: VideoCaption[] = []
  77
  78   playlistPosition: number
  79   playlist: VideoPlaylist = null
  80
  81   descriptionLoading = false
  82   completeDescriptionShown = false
  83   completeVideoDescription: string
  84   shortVideoDescription: string
  85   videoHTMLDescription = ''
  86
  87   likesBarTooltipText = ''
  88
  89   hasAlreadyAcceptedPrivacyConcern = false
  90   remoteServerDown = false
  91
  92   hotkeys: Hotkey[] = []
  93
  94   tooltipLike = ''
  95   tooltipDislike = ''
  96   tooltipSupport = ''
  97   tooltipSaveToPlaylist = ''
  98
  99   videoActionsOptions: VideoActionsDisplayType = {
 100     playlist: false,
 101     download: true,
 102     update: true,
 103     blacklist: true,
 104     delete: true,
 105     report: true,
 106     duplicate: true,
 107     mute: true,
 108     liveInfo: true
 109   }
 110
 111   private nextVideoUuid = ''
 112   private nextVideoTitle = ''
 113   private currentTime: number
 114   private paramsSub: Subscription
 115   private queryParamsSub: Subscription
 116   private configSub: Subscription
 117   private liveVideosSub: Subscription
 118
 119   private serverConfig: ServerConfig
 120
 121   constructor (
 122     private elementRef: ElementRef,
 123     private changeDetector: ChangeDetectorRef,
 124     private route: ActivatedRoute,
 125     private router: Router,
 126     private videoService: VideoService,
 127     private playlistService: VideoPlaylistService,
 128     private confirmService: ConfirmService,
 129     private metaService: MetaService,
 130     private authService: AuthService,
 131     private userService: UserService,
 132     private serverService: ServerService,
 133     private restExtractor: RestExtractor,
 134     private notifier: Notifier,
 135     private markdownService: MarkdownService,
 136     private zone: NgZone,
 137     private redirectService: RedirectService,
 138     private videoCaptionService: VideoCaptionService,
 139     private hotkeysService: HotkeysService,
 140     private hooks: HooksService,
 141     private peertubeSocket: PeerTubeSocket,
 142     private screenService: ScreenService,
 143     private location: PlatformLocation,
 144     @Inject(LOCALE_ID) private localeId: string
 145   ) { }
 146
 147   get user () {
 148     return this.authService.getUser()
 149   }
 150
 151   get anonymousUser () {
 152     return this.userService.getAnonymousUser()
 153   }
 154
 155   async ngOnInit () {
 156     // Hide the tooltips for unlogged users in mobile view, this adds confusion with the popover
 157     if (this.user || !this.screenService.isInMobileView()) {
 158       this.tooltipLike = $localize`Like this video`
 159       this.tooltipDislike = $localize`Dislike this video`
 160       this.tooltipSupport = $localize`Support options for this video`
 161       this.tooltipSaveToPlaylist = $localize`Save to playlist`
 162     }
 163
 164     PeertubePlayerManager.initState()
 165
 166     this.serverConfig = this.serverService.getTmpConfig()
 167
 168     this.configSub = this.serverService.getConfig()
 169         .subscribe(config => {
 170           this.serverConfig = config
 171
 172           if (
 173             isWebRTCDisabled() ||
 174             this.serverConfig.tracker.enabled === false ||
 175             getStoredP2PEnabled() === false ||
 176             peertubeLocalStorage.getItem(VideoWatchComponent.LOCAL_STORAGE_PRIVACY_CONCERN_KEY) === 'true'
 177           ) {
 178             this.hasAlreadyAcceptedPrivacyConcern = true
 179           }
 180         })
 181
 182     this.paramsSub = this.route.params.subscribe(routeParams => {
 183       const videoId = routeParams[ 'videoId' ]
 184       if (videoId) this.loadVideo(videoId)
 185
 186       const playlistId = routeParams[ 'playlistId' ]
 187       if (playlistId) this.loadPlaylist(playlistId)
 188     })
 189
 190     this.queryParamsSub = this.route.queryParams.subscribe(queryParams => {
 191       this.playlistPosition = queryParams[ 'playlistPosition' ]
 192       this.videoWatchPlaylist.updatePlaylistIndex(this.playlistPosition)
 193
 194       const start = queryParams[ 'start' ]
 195       if (this.player && start) this.player.currentTime(parseInt(start, 10))
 196     })
 197
 198     this.initHotkeys()
 199
 200     this.theaterEnabled = getStoredTheater()
 201
 202     this.hooks.runAction('action:video-watch.init', 'video-watch')
 203
 204     setTimeout(cleanupVideoWatch, 1500) // Run in timeout to ensure we're not blocking the UI
 205   }
 206
 207   ngOnDestroy () {
 208     this.flushPlayer()
 209
 210     // Unsubscribe subscriptions
 211     if (this.paramsSub) this.paramsSub.unsubscribe()
 212     if (this.queryParamsSub) this.queryParamsSub.unsubscribe()
 213     if (this.configSub) this.configSub.unsubscribe()
 214     if (this.liveVideosSub) this.liveVideosSub.unsubscribe()
 215
 216     // Unbind hotkeys
 217     this.hotkeysService.remove(this.hotkeys)
 218   }
 219
 220   setLike () {
 221     if (this.isUserLoggedIn() === false) return
 222
 223     // Already liked this video
 224     if (this.userRating === 'like') this.setRating('none')
 225     else this.setRating('like')
 226   }
 227
 228   setDislike () {
 229     if (this.isUserLoggedIn() === false) return
 230
 231     // Already disliked this video
 232     if (this.userRating === 'dislike') this.setRating('none')
 233     else this.setRating('dislike')
 234   }
 235
 236   getRatePopoverText () {
 237     if (this.isUserLoggedIn()) return undefined
 238
 239     return $localize`You need to be <a href="/login">logged in</a> to rate this video.`
 240   }
 241
 242   showMoreDescription () {
 243     if (this.completeVideoDescription === undefined) {
 244       return this.loadCompleteDescription()
 245     }
 246
 247     this.updateVideoDescription(this.completeVideoDescription)
 248     this.completeDescriptionShown = true
 249   }
 250
 251   showLessDescription () {
 252     this.updateVideoDescription(this.shortVideoDescription)
 253     this.completeDescriptionShown = false
 254   }
 255
 256   showDownloadModal () {
 257     this.videoDownloadModal.show(this.video, this.videoCaptions)
 258   }
 259
 260   isVideoDownloadable () {
 261     return this.video && this.video instanceof VideoDetails && this.video.downloadEnabled && !this.video.isLive
 262   }
 263
 264   loadCompleteDescription () {
 265     this.descriptionLoading = true
 266
 267     this.videoService.loadCompleteDescription(this.video.descriptionPath)
 268         .subscribe(
 269           description => {
 270             this.completeDescriptionShown = true
 271             this.descriptionLoading = false
 272
 273             this.shortVideoDescription = this.video.description
 274             this.completeVideoDescription = description
 275
 276             this.updateVideoDescription(this.completeVideoDescription)
 277           },
 278
 279           error => {
 280             this.descriptionLoading = false
 281             this.notifier.error(error.message)
 282           }
 283         )
 284   }
 285
 286   showSupportModal () {
 287     this.supportModal.show()
 288   }
 289
 290   showShareModal () {
 291     this.videoShareModal.show(this.currentTime, this.videoWatchPlaylist.currentPlaylistPosition)
 292   }
 293
 294   isUserLoggedIn () {
 295     return this.authService.isLoggedIn()
 296   }
 297
 298   getVideoTags () {
 299     if (!this.video || Array.isArray(this.video.tags) === false) return []
 300
 301     return this.video.tags
 302   }
 303
 304   onRecommendations (videos: Video[]) {
 305     if (videos.length > 0) {
 306       // The recommended videos's first element should be the next video
 307       const video = videos[0]
 308       this.nextVideoUuid = video.uuid
 309       this.nextVideoTitle = video.name
 310     }
 311   }
 312
 313   onVideoRemoved () {
 314     this.redirectService.redirectToHomepage()
 315   }
 316
 317   declinedPrivacyConcern () {
 318     peertubeLocalStorage.setItem(VideoWatchComponent.LOCAL_STORAGE_PRIVACY_CONCERN_KEY, 'false')
 319     this.hasAlreadyAcceptedPrivacyConcern = false
 320   }
 321
 322   acceptedPrivacyConcern () {
 323     peertubeLocalStorage.setItem(VideoWatchComponent.LOCAL_STORAGE_PRIVACY_CONCERN_KEY, 'true')
 324     this.hasAlreadyAcceptedPrivacyConcern = true
 325   }
 326
 327   isVideoToTranscode () {
 328     return this.video && this.video.state.id === VideoState.TO_TRANSCODE
 329   }
 330
 331   isVideoToImport () {
 332     return this.video && this.video.state.id === VideoState.TO_IMPORT
 333   }
 334
 335   hasVideoScheduledPublication () {
 336     return this.video && this.video.scheduledUpdate !== undefined
 337   }
 338
 339   isLive () {
 340     return !!(this.video?.isLive)
 341   }
 342
 343   isWaitingForLive () {
 344     return this.video?.state.id === VideoState.WAITING_FOR_LIVE
 345   }
 346
 347   isLiveEnded () {
 348     return this.video?.state.id === VideoState.LIVE_ENDED
 349   }
 350
 351   isVideoBlur (video: Video) {
 352     return video.isVideoNSFWForUser(this.user, this.serverConfig)
 353   }
 354
 355   isAutoPlayEnabled () {
 356     return (
 357       (this.user && this.user.autoPlayNextVideo) ||
 358       this.anonymousUser.autoPlayNextVideo
 359     )
 360   }
 361
 362   handleTimestampClicked (timestamp: number) {
 363     if (!this.player || this.video.isLive) return
 364
 365     this.player.currentTime(timestamp)
 366     scrollToTop()
 367   }
 368
 369   isPlaylistAutoPlayEnabled () {
 370     return (
 371       (this.user && this.user.autoPlayNextVideoPlaylist) ||
 372       this.anonymousUser.autoPlayNextVideoPlaylist
 373     )
 374   }
 375
 376   isChannelDisplayNameGeneric () {
 377     const genericChannelDisplayName = [
 378       `Main ${this.video.channel.ownerAccount.name} channel`,
 379       `Default ${this.video.channel.ownerAccount.name} channel`
 380     ]
 381
 382     return genericChannelDisplayName.includes(this.video.channel.displayName)
 383   }
 384
 385   onPlaylistVideoFound (videoId: string) {
 386     this.loadVideo(videoId)
 387   }
 388
 389   displayOtherVideosAsRow () {
 390     // Use the same value as in the SASS file
 391     return this.screenService.getWindowInnerWidth() <= 1100
 392   }
 393
 394   private loadVideo (videoId: string) {
 395     // Video did not change
 396     if (this.video && this.video.uuid === videoId) return
 397
 398     if (this.player) this.player.pause()
 399
 400     const videoObs = this.hooks.wrapObsFun(
 401       this.videoService.getVideo.bind(this.videoService),
 402       { videoId },
 403       'video-watch',
 404       'filter:api.video-watch.video.get.params',
 405       'filter:api.video-watch.video.get.result'
 406     )
 407
 408     // Video did change
 409     forkJoin([
 410       videoObs,
 411       this.videoCaptionService.listCaptions(videoId)
 412     ])
 413       .pipe(
 414         // If 400, 403 or 404, the video is private or blocked so redirect to 404
 415         catchError(err => {
 416           if (err.body.errorCode === ServerErrorCode.DOES_NOT_RESPECT_FOLLOW_CONSTRAINTS && err.body.originUrl) {
 417             const search = window.location.search
 418             let originUrl = err.body.originUrl
 419             if (search) originUrl += search
 420
 421             this.confirmService.confirm(
 422               $localize`This video is not available on this instance. Do you want to be redirected on the origin instance: <a href="${originUrl}">${originUrl}</a>?`,
 423               $localize`Redirection`
 424             ).then(res => {
 425               if (res === false) {
 426                 return this.restExtractor.redirectTo404IfNotFound(err, 'video', [
 427                   HttpStatusCode.BAD_REQUEST_400,
 428                   HttpStatusCode.FORBIDDEN_403,
 429                   HttpStatusCode.NOT_FOUND_404
 430                 ])
 431               }
 432
 433               return window.location.href = originUrl
 434             })
 435           }
 436
 437           return this.restExtractor.redirectTo404IfNotFound(err, 'video', [
 438             HttpStatusCode.BAD_REQUEST_400,
 439             HttpStatusCode.FORBIDDEN_403,
 440             HttpStatusCode.NOT_FOUND_404
 441           ])
 442         })
 443       )
 444       .subscribe(([ video, captionsResult ]) => {
 445         const queryParams = this.route.snapshot.queryParams
 446
 447         const urlOptions = {
 448           resume: queryParams.resume,
 449
 450           startTime: queryParams.start,
 451           stopTime: queryParams.stop,
 452
 453           muted: queryParams.muted,
 454           loop: queryParams.loop,
 455           subtitle: queryParams.subtitle,
 456
 457           playerMode: queryParams.mode,
 458           peertubeLink: false
 459         }
 460
 461         this.onVideoFetched(video, captionsResult.data, urlOptions)
 462             .catch(err => this.handleError(err))
 463       })
 464   }
 465
 466   private loadPlaylist (playlistId: string) {
 467     // Playlist did not change
 468     if (this.playlist && this.playlist.uuid === playlistId) return
 469
 470     this.playlistService.getVideoPlaylist(playlistId)
 471       .pipe(
 472         // If 400 or 403, the video is private or blocked so redirect to 404
 473         catchError(err => this.restExtractor.redirectTo404IfNotFound(err, 'video', [
 474           HttpStatusCode.BAD_REQUEST_400,
 475           HttpStatusCode.FORBIDDEN_403,
 476           HttpStatusCode.NOT_FOUND_404
 477         ]))
 478       )
 479       .subscribe(playlist => {
 480         this.playlist = playlist
 481
 482         this.videoWatchPlaylist.loadPlaylistElements(playlist, !this.playlistPosition, this.playlistPosition)
 483       })
 484   }
 485
 486   private updateVideoDescription (description: string) {
 487     this.video.description = description
 488     this.setVideoDescriptionHTML()
 489       .catch(err => console.error(err))
 490   }
 491
 492   private async setVideoDescriptionHTML () {
 493     const html = await this.markdownService.textMarkdownToHTML(this.video.description)
 494     this.videoHTMLDescription = await this.markdownService.processVideoTimestamps(html)
 495   }
 496
 497   private setVideoLikesBarTooltipText () {
 498     this.likesBarTooltipText = `${this.video.likes} likes / ${this.video.dislikes} dislikes`
 499   }
 500
 501   private handleError (err: any) {
 502     const errorMessage: string = typeof err === 'string' ? err : err.message
 503     if (!errorMessage) return
 504
 505     // Display a message in the video player instead of a notification
 506     if (errorMessage.indexOf('from xs param') !== -1) {
 507       this.flushPlayer()
 508       this.remoteServerDown = true
 509       this.changeDetector.detectChanges()
 510
 511       return
 512     }
 513
 514     this.notifier.error(errorMessage)
 515   }
 516
 517   private checkUserRating () {
 518     // Unlogged users do not have ratings
 519     if (this.isUserLoggedIn() === false) return
 520
 521     this.videoService.getUserVideoRating(this.video.id)
 522         .subscribe(
 523           ratingObject => {
 524             if (ratingObject) {
 525               this.userRating = ratingObject.rating
 526             }
 527           },
 528
 529           err => this.notifier.error(err.message)
 530         )
 531   }
 532
 533   private async onVideoFetched (
 534     video: VideoDetails,
 535     videoCaptions: VideoCaption[],
 536     urlOptions: URLOptions
 537   ) {
 538     this.subscribeToLiveEventsIfNeeded(this.video, video)
 539
 540     this.video = video
 541     this.videoCaptions = videoCaptions
 542
 543     // Re init attributes
 544     this.playerPlaceholderImgSrc = undefined
 545     this.descriptionLoading = false
 546     this.completeDescriptionShown = false
 547     this.completeVideoDescription = undefined
 548     this.remoteServerDown = false
 549     this.currentTime = undefined
 550
 551     if (this.isVideoBlur(this.video)) {
 552       const res = await this.confirmService.confirm(
 553         $localize`This video contains mature or explicit content. Are you sure you want to watch it?`,
 554         $localize`Mature or explicit content`
 555       )
 556       if (res === false) return this.location.back()
 557     }
 558
 559     this.buildPlayer(urlOptions)
 560       .catch(err => console.error('Cannot build the player', err))
 561
 562     this.setVideoDescriptionHTML()
 563     this.setVideoLikesBarTooltipText()
 564
 565     this.setOpenGraphTags()
 566     this.checkUserRating()
 567
 568     const hookOptions = {
 569       videojs,
 570       video: this.video,
 571       playlist: this.playlist
 572     }
 573     this.hooks.runAction('action:video-watch.video.loaded', 'video-watch', hookOptions)
 574   }
 575
 576   private async buildPlayer (urlOptions: URLOptions) {
 577     // Flush old player if needed
 578     this.flushPlayer()
 579
 580     const videoState = this.video.state.id
 581     if (videoState === VideoState.LIVE_ENDED || videoState === VideoState.WAITING_FOR_LIVE) {
 582       this.playerPlaceholderImgSrc = this.video.previewPath
 583       return
 584     }
 585
 586     // Build video element, because videojs removes it on dispose
 587     const playerElementWrapper = this.elementRef.nativeElement.querySelector('#videojs-wrapper')
 588     this.playerElement = document.createElement('video')
 589     this.playerElement.className = 'video-js vjs-peertube-skin'
 590     this.playerElement.setAttribute('playsinline', 'true')
 591     playerElementWrapper.appendChild(this.playerElement)
 592
 593     const params = {
 594       video: this.video,
 595       videoCaptions: this.videoCaptions,
 596       urlOptions,
 597       user: this.user
 598     }
 599     const { playerMode, playerOptions } = await this.hooks.wrapFun(
 600       this.buildPlayerManagerOptions.bind(this),
 601       params,
 602       'video-watch',
 603       'filter:internal.video-watch.player.build-options.params',
 604       'filter:internal.video-watch.player.build-options.result'
 605     )
 606
 607     this.zone.runOutsideAngular(async () => {
 608       this.player = await PeertubePlayerManager.initialize(playerMode, playerOptions, player => this.player = player)
 609
 610       this.player.on('customError', ({ err }: { err: any }) => this.handleError(err))
 611
 612       this.player.on('timeupdate', () => {
 613         this.currentTime = Math.floor(this.player.currentTime())
 614       })
 615
 616       /**
 617        * replaces this.player.one('ended')
 618        * 'condition()': true to make the upnext functionality trigger,
 619        *                false to disable the upnext functionality
 620        * go to the next video in 'condition()' if you don't want of the timer.
 621        * 'next': function triggered at the end of the timer.
 622        * 'suspended': function used at each clic of the timer checking if we need
 623        * to reset progress and wait until 'suspended' becomes truthy again.
 624        */
 625       this.player.upnext({
 626         timeout: 10000, // 10s
 627         headText: $localize`Up Next`,
 628         cancelText: $localize`Cancel`,
 629         suspendedText: $localize`Autoplay is suspended`,
 630         getTitle: () => this.nextVideoTitle,
 631         next: () => this.zone.run(() => this.autoplayNext()),
 632         condition: () => {
 633           if (this.playlist) {
 634             if (this.isPlaylistAutoPlayEnabled()) {
 635               // upnext will not trigger, and instead the next video will play immediately
 636               this.zone.run(() => this.videoWatchPlaylist.navigateToNextPlaylistVideo())
 637             }
 638           } else if (this.isAutoPlayEnabled()) {
 639             return true // upnext will trigger
 640           }
 641           return false // upnext will not trigger, and instead leave the video stopping
 642         },
 643         suspended: () => {
 644           return (
 645             !isXPercentInViewport(this.player.el(), 80) ||
 646             !document.getElementById('content').contains(document.activeElement)
 647           )
 648         }
 649       })
 650
 651       this.player.one('stopped', () => {
 652         if (this.playlist) {
 653           if (this.isPlaylistAutoPlayEnabled()) this.zone.run(() => this.videoWatchPlaylist.navigateToNextPlaylistVideo())
 654         }
 655       })
 656
 657       this.player.one('ended', () => {
 658         if (this.video.isLive) {
 659           this.video.state.id = VideoState.LIVE_ENDED
 660         }
 661       })
 662
 663       this.player.on('theaterChange', (_: any, enabled: boolean) => {
 664         this.zone.run(() => this.theaterEnabled = enabled)
 665       })
 666
 667       this.hooks.runAction('action:video-watch.player.loaded', 'video-watch', { player: this.player, videojs, video: this.video })
 668     })
 669   }
 670
 671   private autoplayNext () {
 672     if (this.playlist) {
 673       this.zone.run(() => this.videoWatchPlaylist.navigateToNextPlaylistVideo())
 674     } else if (this.nextVideoUuid) {
 675       this.router.navigate([ '/videos/watch', this.nextVideoUuid ])
 676     }
 677   }
 678
 679   private setRating (nextRating: UserVideoRateType) {
 680     const ratingMethods: { [id in UserVideoRateType]: (id: number) => Observable<any> } = {
 681       like: this.videoService.setVideoLike,
 682       dislike: this.videoService.setVideoDislike,
 683       none: this.videoService.unsetVideoLike
 684     }
 685
 686     ratingMethods[nextRating].call(this.videoService, this.video.id)
 687           .subscribe(
 688             () => {
 689               // Update the video like attribute
 690               this.updateVideoRating(this.userRating, nextRating)
 691               this.userRating = nextRating
 692             },
 693
 694             (err: { message: string }) => this.notifier.error(err.message)
 695           )
 696   }
 697
 698   private updateVideoRating (oldRating: UserVideoRateType, newRating: UserVideoRateType) {
 699     let likesToIncrement = 0
 700     let dislikesToIncrement = 0
 701
 702     if (oldRating) {
 703       if (oldRating === 'like') likesToIncrement--
 704       if (oldRating === 'dislike') dislikesToIncrement--
 705     }
 706
 707     if (newRating === 'like') likesToIncrement++
 708     if (newRating === 'dislike') dislikesToIncrement++
 709
 710     this.video.likes += likesToIncrement
 711     this.video.dislikes += dislikesToIncrement
 712
 713     this.video.buildLikeAndDislikePercents()
 714     this.setVideoLikesBarTooltipText()
 715   }
 716
 717   private setOpenGraphTags () {
 718     this.metaService.setTitle(this.video.name)
 719
 720     this.metaService.setTag('og:type', 'video')
 721
 722     this.metaService.setTag('og:title', this.video.name)
 723     this.metaService.setTag('name', this.video.name)
 724
 725     this.metaService.setTag('og:description', this.video.description)
 726     this.metaService.setTag('description', this.video.description)
 727
 728     this.metaService.setTag('og:image', this.video.previewPath)
 729
 730     this.metaService.setTag('og:duration', this.video.duration.toString())
 731
 732     this.metaService.setTag('og:site_name', 'PeerTube')
 733
 734     this.metaService.setTag('og:url', window.location.href)
 735     this.metaService.setTag('url', window.location.href)
 736   }
 737
 738   private isAutoplay () {
 739     // We'll jump to the thread id, so do not play the video
 740     if (this.route.snapshot.params['threadId']) return false
 741
 742     // Otherwise true by default
 743     if (!this.user) return true
 744
 745     // Be sure the autoPlay is set to false
 746     return this.user.autoPlayVideo !== false
 747   }
 748
 749   private flushPlayer () {
 750     // Remove player if it exists
 751     if (this.player) {
 752       try {
 753         this.player.dispose()
 754         this.player = undefined
 755       } catch (err) {
 756         console.error('Cannot dispose player.', err)
 757       }
 758     }
 759   }
 760
 761   private buildPlayerManagerOptions (params: {
 762     video: VideoDetails,
 763     videoCaptions: VideoCaption[],
 764     urlOptions: CustomizationOptions & { playerMode: PlayerMode },
 765     user?: AuthUser
 766   }) {
 767     const { video, videoCaptions, urlOptions, user } = params
 768     const getStartTime = () => {
 769       const byUrl = urlOptions.startTime !== undefined
 770       const byHistory = video.userHistory && (!this.playlist || urlOptions.resume !== undefined)
 771       const byLocalStorage = getStoredVideoWatchHistory(video.uuid)
 772
 773       if (byUrl) return timeToInt(urlOptions.startTime)
 774       if (byHistory) return video.userHistory.currentTime
 775       if (byLocalStorage) return byLocalStorage.duration
 776
 777       return 0
 778     }
 779
 780     let startTime = getStartTime()
 781
 782     // If we are at the end of the video, reset the timer
 783     if (video.duration - startTime <= 1) startTime = 0
 784
 785     const playerCaptions = videoCaptions.map(c => ({
 786       label: c.language.label,
 787       language: c.language.id,
 788       src: environment.apiUrl + c.captionPath
 789     }))
 790
 791     const options: PeertubePlayerManagerOptions = {
 792       common: {
 793         autoplay: this.isAutoplay(),
 794         nextVideo: () => this.zone.run(() => this.autoplayNext()),
 795
 796         playerElement: this.playerElement,
 797         onPlayerElementChange: (element: HTMLVideoElement) => this.playerElement = element,
 798
 799         videoDuration: video.duration,
 800         enableHotkeys: true,
 801         inactivityTimeout: 2500,
 802         poster: video.previewUrl,
 803
 804         startTime,
 805         stopTime: urlOptions.stopTime,
 806         controls: urlOptions.controls,
 807         muted: urlOptions.muted,
 808         loop: urlOptions.loop,
 809         subtitle: urlOptions.subtitle,
 810
 811         peertubeLink: urlOptions.peertubeLink,
 812
 813         theaterButton: true,
 814         captions: videoCaptions.length !== 0,
 815
 816         videoViewUrl: video.privacy.id !== VideoPrivacy.PRIVATE
 817           ? this.videoService.getVideoViewUrl(video.uuid)
 818           : null,
 819         embedUrl: video.embedUrl,
 820         embedTitle: video.name,
 821
 822         isLive: video.isLive,
 823
 824         language: this.localeId,
 825
 826         userWatching: user && user.videosHistoryEnabled === true ? {
 827           url: this.videoService.getUserWatchingVideoUrl(video.uuid),
 828           authorizationHeader: this.authService.getRequestHeaderValue()
 829         } : undefined,
 830
 831         serverUrl: environment.apiUrl,
 832
 833         videoCaptions: playerCaptions,
 834
 835         videoUUID: video.uuid
 836       },
 837
 838       webtorrent: {
 839         videoFiles: video.files
 840       }
 841     }
 842
 843     let mode: PlayerMode
 844
 845     if (urlOptions.playerMode) {
 846       if (urlOptions.playerMode === 'p2p-media-loader') mode = 'p2p-media-loader'
 847       else mode = 'webtorrent'
 848     } else {
 849       if (video.hasHlsPlaylist()) mode = 'p2p-media-loader'
 850       else mode = 'webtorrent'
 851     }
 852
 853     // p2p-media-loader needs TextEncoder, try to fallback on WebTorrent
 854     if (typeof TextEncoder === 'undefined') {
 855       mode = 'webtorrent'
 856     }
 857
 858     if (mode === 'p2p-media-loader') {
 859       const hlsPlaylist = video.getHlsPlaylist()
 860
 861       const p2pMediaLoader = {
 862         playlistUrl: hlsPlaylist.playlistUrl,
 863         segmentsSha256Url: hlsPlaylist.segmentsSha256Url,
 864         redundancyBaseUrls: hlsPlaylist.redundancies.map(r => r.baseUrl),
 865         trackerAnnounce: video.trackerUrls,
 866         videoFiles: hlsPlaylist.files
 867       } as P2PMediaLoaderOptions
 868
 869       Object.assign(options, { p2pMediaLoader })
 870     }
 871
 872     return { playerMode: mode, playerOptions: options }
 873   }
 874
 875   private async subscribeToLiveEventsIfNeeded (oldVideo: VideoDetails, newVideo: VideoDetails) {
 876     if (!this.liveVideosSub) {
 877       this.liveVideosSub = this.buildLiveEventsSubscription()
 878     }
 879
 880     if (oldVideo && oldVideo.id !== newVideo.id) {
 881       await this.peertubeSocket.unsubscribeLiveVideos(oldVideo.id)
 882     }
 883
 884     if (!newVideo.isLive) return
 885
 886     await this.peertubeSocket.subscribeToLiveVideosSocket(newVideo.id)
 887   }
 888
 889   private buildLiveEventsSubscription () {
 890     return this.peertubeSocket.getLiveVideosObservable()
 891       .subscribe(({ type, payload }) => {
 892         if (type === 'state-change') return this.handleLiveStateChange(payload.state)
 893         if (type === 'views-change') return this.handleLiveViewsChange(payload.views)
 894       })
 895   }
 896
 897   private handleLiveStateChange (newState: VideoState) {
 898     if (newState !== VideoState.PUBLISHED) return
 899
 900     const videoState = this.video.state.id
 901     if (videoState !== VideoState.WAITING_FOR_LIVE && videoState !== VideoState.LIVE_ENDED) return
 902
 903     console.log('Loading video after live update.')
 904
 905     const videoUUID = this.video.uuid
 906
 907     // Reset to refetch the video
 908     this.video = undefined
 909     this.loadVideo(videoUUID)
 910   }
 911
 912   private handleLiveViewsChange (newViews: number) {
 913     if (!this.video) {
 914       console.error('Cannot update video live views because video is no defined.')
 915       return
 916     }
 917
 918     console.log('Updating live views.')
 919
 920     this.video.views = newViews
 921   }
 922
 923   private initHotkeys () {
 924     this.hotkeys = [
 925       // These hotkeys are managed by the player
 926       new Hotkey('f', e => e, undefined, $localize`Enter/exit fullscreen (requires player focus)`),
 927       new Hotkey('space', e => e, undefined, $localize`Play/Pause the video (requires player focus)`),
 928       new Hotkey('m', e => e, undefined, $localize`Mute/unmute the video (requires player focus)`),
 929
 930       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)`),
 931
 932       new Hotkey('up', e => e, undefined, $localize`Increase the volume (requires player focus)`),
 933       new Hotkey('down', e => e, undefined, $localize`Decrease the volume (requires player focus)`),
 934
 935       new Hotkey('right', e => e, undefined, $localize`Seek the video forward (requires player focus)`),
 936       new Hotkey('left', e => e, undefined, $localize`Seek the video backward (requires player focus)`),
 937
 938       new Hotkey('>', e => e, undefined, $localize`Increase playback rate (requires player focus)`),
 939       new Hotkey('<', e => e, undefined, $localize`Decrease playback rate (requires player focus)`),
 940
 941       new Hotkey('.', e => e, undefined, $localize`Navigate in the video frame by frame (requires player focus)`)
 942     ]
 943
 944     if (this.isUserLoggedIn()) {
 945       this.hotkeys = this.hotkeys.concat([
 946         new Hotkey('shift+l', () => {
 947           this.setLike()
 948           return false
 949         }, undefined, $localize`Like the video`),
 950
 951         new Hotkey('shift+d', () => {
 952           this.setDislike()
 953           return false
 954         }, undefined, $localize`Dislike the video`),
 955
 956         new Hotkey('shift+s', () => {
 957           this.subscribeButton.subscribed ? this.subscribeButton.unsubscribe() : this.subscribeButton.subscribe()
 958           return false
 959         }, undefined, $localize`Subscribe to the account`)
 960       ])
 961     }
 962
 963     this.hotkeysService.add(this.hotkeys)
 964   }
 965 }