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 * as 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 { RateType, Video, VideoService } from '../shared'
  15 import { WebTorrentService } from './webtorrent.service'
  16
  17 @Component({
  18   selector: 'my-video-watch',
  19   templateUrl: './video-watch.component.html',
  20   styleUrls: [ './video-watch.component.scss' ]
  21 })
  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: RateType = 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: false
  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, { autoplay: true }, (err) => {
 131         if (err) {
 132           this.notificationsService.error('Error', 'Cannot append the file in the video element.')
 133           console.error(err)
 134         }
 135       })
 136
 137       this.runInProgress(torrent)
 138     })
 139   }
 140
 141   setLike () {
 142     if (this.isUserLoggedIn() === false) return
 143     // Already liked this video
 144     if (this.userRating === 'like') return
 145
 146     this.videoService.setVideoLike(this.video.id)
 147                      .subscribe(
 148                       () => {
 149                         // Update the video like attribute
 150                         this.updateVideoRating(this.userRating, 'like')
 151                         this.userRating = 'like'
 152                       },
 153
 154                       err => this.notificationsService.error('Error', err.text)
 155                      )
 156   }
 157
 158   setDislike () {
 159     if (this.isUserLoggedIn() === false) return
 160     // Already disliked this video
 161     if (this.userRating === 'dislike') return
 162
 163     this.videoService.setVideoDislike(this.video.id)
 164                      .subscribe(
 165                       () => {
 166                         // Update the video dislike attribute
 167                         this.updateVideoRating(this.userRating, 'dislike')
 168                         this.userRating = 'dislike'
 169                       },
 170
 171                       err => this.notificationsService.error('Error', err.text)
 172                      )
 173   }
 174
 175   removeVideo (event: Event) {
 176     event.preventDefault()
 177
 178     this.confirmService.confirm('Do you really want to delete this video?', 'Delete').subscribe(
 179       res => {
 180         if (res === false) return
 181
 182         this.videoService.removeVideo(this.video.id)
 183                          .subscribe(
 184                            status => {
 185                              this.notificationsService.success('Success', `Video ${this.video.name} deleted.`)
 186                              // Go back to the video-list.
 187                              this.router.navigate(['/videos/list'])
 188                            },
 189
 190                            error => this.notificationsService.error('Error', error.text)
 191                           )
 192       }
 193     )
 194   }
 195
 196   blacklistVideo (event: Event) {
 197     event.preventDefault()
 198
 199     this.confirmService.confirm('Do you really want to blacklist this video ?', 'Blacklist').subscribe(
 200       res => {
 201         if (res === false) return
 202
 203         this.videoService.blacklistVideo(this.video.id)
 204                          .subscribe(
 205                            status => {
 206                              this.notificationsService.success('Success', `Video ${this.video.name} had been blacklisted.`)
 207                              this.router.navigate(['/videos/list'])
 208                            },
 209
 210                            error => this.notificationsService.error('Error', error.text)
 211                          )
 212       }
 213     )
 214   }
 215
 216   showReportModal (event: Event) {
 217     event.preventDefault()
 218     this.videoReportModal.show()
 219   }
 220
 221   showShareModal () {
 222     this.videoShareModal.show()
 223   }
 224
 225   showMagnetUriModal (event: Event) {
 226     event.preventDefault()
 227     this.videoMagnetModal.show()
 228   }
 229
 230   isUserLoggedIn () {
 231     return this.authService.isLoggedIn()
 232   }
 233
 234   canUserUpdateVideo () {
 235     return this.video.isUpdatableBy(this.authService.getUser())
 236   }
 237
 238   isVideoRemovable () {
 239     return this.video.isRemovableBy(this.authService.getUser())
 240   }
 241
 242   isVideoBlacklistable () {
 243     return this.video.isBlackistableBy(this.authService.getUser())
 244   }
 245
 246   private checkUserRating () {
 247     // Unlogged users do not have ratings
 248     if (this.isUserLoggedIn() === false) return
 249
 250     this.videoService.getUserVideoRating(this.video.id)
 251                      .subscribe(
 252                        ratingObject => {
 253                          if (ratingObject) {
 254                            this.userRating = ratingObject.rating
 255                          }
 256                        },
 257
 258                        err => this.notificationsService.error('Error', err.text)
 259                       )
 260   }
 261
 262   private onVideoFetched (video: Video) {
 263     this.video = video
 264
 265     let observable
 266     if (this.video.isVideoNSFWForUser(this.authService.getUser())) {
 267       observable = this.confirmService.confirm('This video is not safe for work. Are you sure you want to watch it?', 'NSFW')
 268     } else {
 269       observable = Observable.of(true)
 270     }
 271
 272     observable.subscribe(
 273       res => {
 274         if (res === false) {
 275           return this.router.navigate([ '/videos/list' ])
 276         }
 277
 278         this.setOpenGraphTags()
 279         this.loadVideo()
 280         this.checkUserRating()
 281       }
 282     )
 283   }
 284
 285   private updateVideoRating (oldRating: RateType, newRating: RateType) {
 286     let likesToIncrement = 0
 287     let dislikesToIncrement = 0
 288
 289     if (oldRating) {
 290       if (oldRating === 'like') likesToIncrement--
 291       if (oldRating === 'dislike') dislikesToIncrement--
 292     }
 293
 294     if (newRating === 'like') likesToIncrement++
 295     if (newRating === 'dislike') dislikesToIncrement++
 296
 297     this.video.likes += likesToIncrement
 298     this.video.dislikes += dislikesToIncrement
 299   }
 300
 301   private loadTooLong () {
 302     this.error = true
 303     console.error('The video load seems to be abnormally long.')
 304   }
 305
 306   private setOpenGraphTags () {
 307     this.metaService.setTitle(this.video.name)
 308
 309     this.metaService.setTag('og:type', 'video')
 310
 311     this.metaService.setTag('og:title', this.video.name)
 312     this.metaService.setTag('name', this.video.name)
 313
 314     this.metaService.setTag('og:description', this.video.description)
 315     this.metaService.setTag('description', this.video.description)
 316
 317     this.metaService.setTag('og:image', this.video.thumbnailPath)
 318
 319     this.metaService.setTag('og:duration', this.video.duration.toString())
 320
 321     this.metaService.setTag('og:site_name', 'PeerTube')
 322
 323     this.metaService.setTag('og:url', window.location.href)
 324     this.metaService.setTag('url', window.location.href)
 325   }
 326
 327   private runInProgress (torrent: any) {
 328     // Refresh each second
 329     this.torrentInfosInterval = window.setInterval(() => {
 330       this.ngZone.run(() => {
 331         this.downloadSpeed = torrent.downloadSpeed
 332         this.numPeers = torrent.numPeers
 333         this.uploadSpeed = torrent.uploadSpeed
 334       })
 335     }, 1000)
 336   }
 337 }