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 '@nglibs/meta'
   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: Element
  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 warningsSub: Subscription
  45   private torrentInfosInterval: number
  46
  47   constructor (
  48     private elementRef: ElementRef,
  49     private ngZone: NgZone,
  50     private route: ActivatedRoute,
  51     private router: Router,
  52     private videoService: VideoService,
  53     private confirmService: ConfirmService,
  54     private metaService: MetaService,
  55     private webTorrentService: WebTorrentService,
  56     private authService: AuthService,
  57     private notificationsService: NotificationsService
  58   ) {}
  59
  60   ngOnInit () {
  61     this.paramsSub = this.route.params.subscribe(routeParams => {
  62       let id = routeParams['id']
  63       this.videoService.getVideo(id).subscribe(
  64         video => this.onVideoFetched(video),
  65
  66         error => {
  67           console.error(error)
  68           this.videoNotFound = true
  69         }
  70       )
  71     })
  72
  73     this.playerElement = this.elementRef.nativeElement.querySelector('#video-container')
  74
  75     const videojsOptions = {
  76       controls: true,
  77       autoplay: true
  78     }
  79
  80     const self = this
  81     videojs(this.playerElement, videojsOptions, function () {
  82       self.player = this
  83     })
  84
  85     this.errorsSub = this.webTorrentService.errors.subscribe(err => this.notificationsService.error('Error', err.message))
  86     this.warningsSub = this.webTorrentService.errors.subscribe(err => this.notificationsService.alert('Warning', err.message))
  87   }
  88
  89   ngOnDestroy () {
  90     // Remove WebTorrent stuff
  91     console.log('Removing video from webtorrent.')
  92     window.clearInterval(this.torrentInfosInterval)
  93     window.clearTimeout(this.errorTimer)
  94
  95     if (this.video !== null && this.webTorrentService.has(this.video.magnetUri)) {
  96       this.webTorrentService.remove(this.video.magnetUri)
  97     }
  98
  99     // Remove player
 100     videojs(this.playerElement).dispose()
 101
 102     // Unsubscribe subscriptions
 103     this.paramsSub.unsubscribe()
 104     this.errorsSub.unsubscribe()
 105     this.warningsSub.unsubscribe()
 106   }
 107
 108   loadVideo () {
 109     // Reset the error
 110     this.error = false
 111     // We are loading the video
 112     this.loading = true
 113
 114     console.log('Adding ' + this.video.magnetUri + '.')
 115
 116     // The callback might never return if there are network issues
 117     // So we create a timer to inform the user the load is abnormally long
 118     this.errorTimer = window.setTimeout(() => this.loadTooLong(), VideoWatchComponent.LOADTIME_TOO_LONG)
 119
 120     this.webTorrentService.add(this.video.magnetUri, (torrent) => {
 121       // Clear the error timer
 122       window.clearTimeout(this.errorTimer)
 123       // Maybe the error was fired by the timer, so reset it
 124       this.error = false
 125
 126       // We are not loading the video anymore
 127       this.loading = false
 128
 129       console.log('Added ' + this.video.magnetUri + '.')
 130       torrent.files[0].renderTo(this.playerElement, (err) => {
 131         if (err) {
 132           this.notificationsService.error('Error', 'Cannot append the file in the video element.')
 133           console.error(err)
 134         }
 135
 136         // Hack to "simulate" src link in video.js >= 6
 137         // If no, we can't play the video after pausing it
 138         // https://github.com/videojs/video.js/blob/master/src/js/player.js#L1633
 139         (this.player as any).src = () => true
 140
 141         this.player.play()
 142       })
 143
 144       this.runInProgress(torrent)
 145     })
 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.text)
 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.text)
 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 checkUserRating () {
 254     // Unlogged users do not have ratings
 255     if (this.isUserLoggedIn() === false) return
 256
 257     this.videoService.getUserVideoRating(this.video.id)
 258                      .subscribe(
 259                        ratingObject => {
 260                          if (ratingObject) {
 261                            this.userRating = ratingObject.rating
 262                          }
 263                        },
 264
 265                        err => this.notificationsService.error('Error', err.text)
 266                       )
 267   }
 268
 269   private onVideoFetched (video: Video) {
 270     this.video = video
 271
 272     let observable
 273     if (this.video.isVideoNSFWForUser(this.authService.getUser())) {
 274       observable = this.confirmService.confirm('This video is not safe for work. Are you sure you want to watch it?', 'NSFW')
 275     } else {
 276       observable = Observable.of(true)
 277     }
 278
 279     observable.subscribe(
 280       res => {
 281         if (res === false) {
 282           return this.router.navigate([ '/videos/list' ])
 283         }
 284
 285         this.setOpenGraphTags()
 286         this.loadVideo()
 287         this.checkUserRating()
 288       }
 289     )
 290   }
 291
 292   private updateVideoRating (oldRating: UserVideoRateType, newRating: VideoRateType) {
 293     let likesToIncrement = 0
 294     let dislikesToIncrement = 0
 295
 296     if (oldRating) {
 297       if (oldRating === 'like') likesToIncrement--
 298       if (oldRating === 'dislike') dislikesToIncrement--
 299     }
 300
 301     if (newRating === 'like') likesToIncrement++
 302     if (newRating === 'dislike') dislikesToIncrement++
 303
 304     this.video.likes += likesToIncrement
 305     this.video.dislikes += dislikesToIncrement
 306   }
 307
 308   private loadTooLong () {
 309     this.error = true
 310     console.error('The video load seems to be abnormally long.')
 311   }
 312
 313   private setOpenGraphTags () {
 314     this.metaService.setTitle(this.video.name)
 315
 316     this.metaService.setTag('og:type', 'video')
 317
 318     this.metaService.setTag('og:title', this.video.name)
 319     this.metaService.setTag('name', this.video.name)
 320
 321     this.metaService.setTag('og:description', this.video.description)
 322     this.metaService.setTag('description', this.video.description)
 323
 324     this.metaService.setTag('og:image', this.video.thumbnailPath)
 325
 326     this.metaService.setTag('og:duration', this.video.duration.toString())
 327
 328     this.metaService.setTag('og:site_name', 'PeerTube')
 329
 330     this.metaService.setTag('og:url', window.location.href)
 331     this.metaService.setTag('url', window.location.href)
 332   }
 333
 334   private runInProgress (torrent: any) {
 335     // Refresh each second
 336     this.torrentInfosInterval = window.setInterval(() => {
 337       this.ngZone.run(() => {
 338         this.downloadSpeed = torrent.downloadSpeed
 339         this.numPeers = torrent.numPeers
 340         this.uploadSpeed = torrent.uploadSpeed
 341       })
 342     }, 1000)
 343   }
 344 }