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

   1 import { Component, ElementRef, NgZone, OnDestroy, OnInit, ViewChild } from '@angular/core'
   2 import { ActivatedRoute, Router } from '@angular/router'
   3 import { Observable } from 'rxjs/Observable'
   4 import { Subscription } from 'rxjs/Subscription'
   5
   6 import videojs from 'video.js'
   7 import { MetaService } from '@ngx-meta/core'
   8 import { NotificationsService } from 'angular2-notifications'
   9
  10 import { AuthService, ConfirmService } from '../../core'
  11 import { VideoMagnetComponent } from './video-magnet.component'
  12 import { VideoShareComponent } from './video-share.component'
  13 import { VideoReportComponent } from './video-report.component'
  14 import { Video, VideoService } from '../shared'
  15 import { WebTorrentService } from './webtorrent.service'
  16 import { UserVideoRateType, VideoRateType, UserVideoRate } from '../../../../../shared'
  17
  18 @Component({
  19   selector: 'my-video-watch',
  20   templateUrl: './video-watch.component.html',
  21   styleUrls: [ './video-watch.component.scss' ]
  22 })
  23 export class VideoWatchComponent implements OnInit, OnDestroy {
  24   private static LOADTIME_TOO_LONG = 20000
  25
  26   @ViewChild('videoMagnetModal') videoMagnetModal: VideoMagnetComponent
  27   @ViewChild('videoShareModal') videoShareModal: VideoShareComponent
  28   @ViewChild('videoReportModal') videoReportModal: VideoReportComponent
  29
  30   downloadSpeed: number
  31   error = false
  32   loading = false
  33   numPeers: number
  34   player: videojs.Player
  35   playerElement: HTMLMediaElement
  36   uploadSpeed: number
  37   userRating: UserVideoRateType = null
  38   video: Video = null
  39   videoNotFound = false
  40
  41   private errorTimer: number
  42   private paramsSub: Subscription
  43   private errorsSub: Subscription
  44   private torrentInfosInterval: number
  45
  46   constructor (
  47     private elementRef: ElementRef,
  48     private ngZone: NgZone,
  49     private route: ActivatedRoute,
  50     private router: Router,
  51     private videoService: VideoService,
  52     private confirmService: ConfirmService,
  53     private metaService: MetaService,
  54     private webTorrentService: WebTorrentService,
  55     private authService: AuthService,
  56     private notificationsService: NotificationsService
  57   ) {}
  58
  59   ngOnInit () {
  60     this.paramsSub = this.route.params.subscribe(routeParams => {
  61       let uuid = routeParams['uuid']
  62       this.videoService.getVideo(uuid).subscribe(
  63         video => this.onVideoFetched(video),
  64
  65         error => {
  66           console.error(error)
  67           this.videoNotFound = true
  68         }
  69       )
  70     })
  71
  72     this.playerElement = this.elementRef.nativeElement.querySelector('#video-container')
  73
  74     const videojsOptions = {
  75       controls: true,
  76       autoplay: true
  77     }
  78
  79     const self = this
  80     videojs(this.playerElement, videojsOptions, function () {
  81       self.player = this
  82     })
  83
  84     this.errorsSub = this.webTorrentService.errors.subscribe(err => this.handleError(err))
  85   }
  86
  87   ngOnDestroy () {
  88     // Remove WebTorrent stuff
  89     console.log('Removing video from webtorrent.')
  90     window.clearInterval(this.torrentInfosInterval)
  91     window.clearTimeout(this.errorTimer)
  92
  93     if (this.video !== null && this.webTorrentService.has(this.video.getDefaultMagnetUri())) {
  94       this.webTorrentService.remove(this.video.getDefaultMagnetUri())
  95     }
  96
  97     // Remove player
  98     videojs(this.playerElement).dispose()
  99
 100     // Unsubscribe subscriptions
 101     this.paramsSub.unsubscribe()
 102     this.errorsSub.unsubscribe()
 103   }
 104
 105   loadVideo () {
 106     // Reset the error
 107     this.error = false
 108     // We are loading the video
 109     this.loading = true
 110
 111     console.log('Adding ' + this.video.getDefaultMagnetUri() + '.')
 112
 113     // The callback might never return if there are network issues
 114     // So we create a timer to inform the user the load is abnormally long
 115     this.errorTimer = window.setTimeout(() => this.loadTooLong(), VideoWatchComponent.LOADTIME_TOO_LONG)
 116
 117     const torrent = this.webTorrentService.add(this.video.getDefaultMagnetUri(), torrent => {
 118       // Clear the error timer
 119       window.clearTimeout(this.errorTimer)
 120       // Maybe the error was fired by the timer, so reset it
 121       this.error = false
 122
 123       // We are not loading the video anymore
 124       this.loading = false
 125
 126       console.log('Added ' + this.video.getDefaultMagnetUri() + '.')
 127       torrent.files[0].renderTo(this.playerElement, (err) => {
 128         if (err) {
 129           this.notificationsService.error('Error', 'Cannot append the file in the video element.')
 130           console.error(err)
 131         }
 132
 133         // Hack to "simulate" src link in video.js >= 6
 134         // If no, we can't play the video after pausing it
 135         // https://github.com/videojs/video.js/blob/master/src/js/player.js#L1633
 136         (this.player as any).src = () => true
 137
 138         this.player.play()
 139       })
 140
 141       this.runInProgress(torrent)
 142     })
 143
 144     torrent.on('error', err => this.handleError(err))
 145     torrent.on('warning', err => this.handleError(err))
 146   }
 147
 148   setLike () {
 149     if (this.isUserLoggedIn() === false) return
 150     // Already liked this video
 151     if (this.userRating === 'like') return
 152
 153     this.videoService.setVideoLike(this.video.id)
 154                      .subscribe(
 155                       () => {
 156                         // Update the video like attribute
 157                         this.updateVideoRating(this.userRating, 'like')
 158                         this.userRating = 'like'
 159                       },
 160
 161                       err => this.notificationsService.error('Error', err)
 162                      )
 163   }
 164
 165   setDislike () {
 166     if (this.isUserLoggedIn() === false) return
 167     // Already disliked this video
 168     if (this.userRating === 'dislike') return
 169
 170     this.videoService.setVideoDislike(this.video.id)
 171                      .subscribe(
 172                       () => {
 173                         // Update the video dislike attribute
 174                         this.updateVideoRating(this.userRating, 'dislike')
 175                         this.userRating = 'dislike'
 176                       },
 177
 178                       err => this.notificationsService.error('Error', err)
 179                      )
 180   }
 181
 182   removeVideo (event: Event) {
 183     event.preventDefault()
 184
 185     this.confirmService.confirm('Do you really want to delete this video?', 'Delete').subscribe(
 186       res => {
 187         if (res === false) return
 188
 189         this.videoService.removeVideo(this.video.id)
 190                          .subscribe(
 191                            status => {
 192                              this.notificationsService.success('Success', `Video ${this.video.name} deleted.`)
 193                              // Go back to the video-list.
 194                              this.router.navigate(['/videos/list'])
 195                            },
 196
 197                            error => this.notificationsService.error('Error', error.text)
 198                           )
 199       }
 200     )
 201   }
 202
 203   blacklistVideo (event: Event) {
 204     event.preventDefault()
 205
 206     this.confirmService.confirm('Do you really want to blacklist this video ?', 'Blacklist').subscribe(
 207       res => {
 208         if (res === false) return
 209
 210         this.videoService.blacklistVideo(this.video.id)
 211                          .subscribe(
 212                            status => {
 213                              this.notificationsService.success('Success', `Video ${this.video.name} had been blacklisted.`)
 214                              this.router.navigate(['/videos/list'])
 215                            },
 216
 217                            error => this.notificationsService.error('Error', error.text)
 218                          )
 219       }
 220     )
 221   }
 222
 223   showReportModal (event: Event) {
 224     event.preventDefault()
 225     this.videoReportModal.show()
 226   }
 227
 228   showShareModal () {
 229     this.videoShareModal.show()
 230   }
 231
 232   showMagnetUriModal (event: Event) {
 233     event.preventDefault()
 234     this.videoMagnetModal.show()
 235   }
 236
 237   isUserLoggedIn () {
 238     return this.authService.isLoggedIn()
 239   }
 240
 241   canUserUpdateVideo () {
 242     return this.video.isUpdatableBy(this.authService.getUser())
 243   }
 244
 245   isVideoRemovable () {
 246     return this.video.isRemovableBy(this.authService.getUser())
 247   }
 248
 249   isVideoBlacklistable () {
 250     return this.video.isBlackistableBy(this.authService.getUser())
 251   }
 252
 253   private handleError (err: any) {
 254     const errorMessage: string = typeof err === 'string' ? err : err.message
 255     let message = ''
 256
 257     if (errorMessage.indexOf('http error') !== -1) {
 258       message = 'Cannot fetch video from server, maybe down.'
 259     } else {
 260       message = errorMessage
 261     }
 262
 263     this.notificationsService.error('Error', message)
 264   }
 265
 266   private checkUserRating () {
 267     // Unlogged users do not have ratings
 268     if (this.isUserLoggedIn() === false) return
 269
 270     this.videoService.getUserVideoRating(this.video.id)
 271                      .subscribe(
 272                        ratingObject => {
 273                          if (ratingObject) {
 274                            this.userRating = ratingObject.rating
 275                          }
 276                        },
 277
 278                        err => this.notificationsService.error('Error', err)
 279                       )
 280   }
 281
 282   private onVideoFetched (video: Video) {
 283     this.video = video
 284
 285     let observable
 286     if (this.video.isVideoNSFWForUser(this.authService.getUser())) {
 287       observable = this.confirmService.confirm('This video is not safe for work. Are you sure you want to watch it?', 'NSFW')
 288     } else {
 289       observable = Observable.of(true)
 290     }
 291
 292     observable.subscribe(
 293       res => {
 294         if (res === false) {
 295           return this.router.navigate([ '/videos/list' ])
 296         }
 297
 298         this.setOpenGraphTags()
 299         this.loadVideo()
 300         this.checkUserRating()
 301       }
 302     )
 303   }
 304
 305   private updateVideoRating (oldRating: UserVideoRateType, newRating: VideoRateType) {
 306     let likesToIncrement = 0
 307     let dislikesToIncrement = 0
 308
 309     if (oldRating) {
 310       if (oldRating === 'like') likesToIncrement--
 311       if (oldRating === 'dislike') dislikesToIncrement--
 312     }
 313
 314     if (newRating === 'like') likesToIncrement++
 315     if (newRating === 'dislike') dislikesToIncrement++
 316
 317     this.video.likes += likesToIncrement
 318     this.video.dislikes += dislikesToIncrement
 319   }
 320
 321   private loadTooLong () {
 322     this.error = true
 323     console.error('The video load seems to be abnormally long.')
 324   }
 325
 326   private setOpenGraphTags () {
 327     this.metaService.setTitle(this.video.name)
 328
 329     this.metaService.setTag('og:type', 'video')
 330
 331     this.metaService.setTag('og:title', this.video.name)
 332     this.metaService.setTag('name', this.video.name)
 333
 334     this.metaService.setTag('og:description', this.video.description)
 335     this.metaService.setTag('description', this.video.description)
 336
 337     this.metaService.setTag('og:image', this.video.previewPath)
 338
 339     this.metaService.setTag('og:duration', this.video.duration.toString())
 340
 341     this.metaService.setTag('og:site_name', 'PeerTube')
 342
 343     this.metaService.setTag('og:url', window.location.href)
 344     this.metaService.setTag('url', window.location.href)
 345   }
 346
 347   private runInProgress (torrent: any) {
 348     // Refresh each second
 349     this.torrentInfosInterval = window.setInterval(() => {
 350       this.ngZone.run(() => {
 351         this.downloadSpeed = torrent.downloadSpeed
 352         this.numPeers = torrent.numPeers
 353         this.uploadSpeed = torrent.uploadSpeed
 354       })
 355     }, 1000)
 356   }
 357 }