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

   1 import { Component, ElementRef, NgZone, OnDestroy, OnInit, ViewChild } from '@angular/core';
   2 import { ActivatedRoute } from '@angular/router';
   3 import { Subscription } from 'rxjs/Subscription';
   4
   5 import * as videojs from 'video.js';
   6 import { MetaService } from 'ng2-meta';
   7 import { NotificationsService } from 'angular2-notifications';
   8
   9 import { AuthService } from '../../core';
  10 import { VideoMagnetComponent } from './video-magnet.component';
  11 import { VideoShareComponent } from './video-share.component';
  12 import { VideoReportComponent } from './video-report.component';
  13 import { Video, VideoService } from '../shared';
  14 import { WebTorrentService } from './webtorrent.service';
  15
  16 @Component({
  17   selector: 'my-video-watch',
  18   templateUrl: './video-watch.component.html',
  19   styleUrls: [ './video-watch.component.scss' ]
  20 })
  21
  22 export class VideoWatchComponent implements OnInit, OnDestroy {
  23   private static LOADTIME_TOO_LONG: number = 20000;
  24
  25   @ViewChild('videoMagnetModal') videoMagnetModal: VideoMagnetComponent;
  26   @ViewChild('videoShareModal') videoShareModal: VideoShareComponent;
  27   @ViewChild('videoReportModal') videoReportModal: VideoReportComponent;
  28
  29   downloadSpeed: number;
  30   error: boolean = false;
  31   loading: boolean = false;
  32   numPeers: number;
  33   player: VideoJSPlayer;
  34   playerElement: Element;
  35   uploadSpeed: number;
  36   video: Video = null;
  37   videoNotFound = false;
  38
  39   private errorTimer: number;
  40   private paramsSub: Subscription;
  41   private errorsSub: Subscription;
  42   private warningsSub: Subscription;
  43   private torrentInfosInterval: number;
  44
  45   constructor(
  46     private elementRef: ElementRef,
  47     private ngZone: NgZone,
  48     private route: ActivatedRoute,
  49     private videoService: VideoService,
  50     private metaService: MetaService,
  51     private webTorrentService: WebTorrentService,
  52     private authService: AuthService,
  53     private notificationsService: NotificationsService
  54   ) {}
  55
  56   ngOnInit() {
  57     this.paramsSub = this.route.params.subscribe(routeParams => {
  58       let id = routeParams['id'];
  59       this.videoService.getVideo(id).subscribe(
  60         video => {
  61           this.video = video;
  62           this.setOpenGraphTags();
  63           this.loadVideo();
  64         },
  65         error => {
  66           this.videoNotFound = true;
  67         }
  68       );
  69     });
  70
  71     this.playerElement = this.elementRef.nativeElement.querySelector('#video-container');
  72
  73     const videojsOptions = {
  74       controls: true,
  75       autoplay: false
  76     };
  77
  78     const self = this;
  79     videojs(this.playerElement, videojsOptions, function () {
  80       self.player = this;
  81     });
  82
  83     this.errorsSub = this.webTorrentService.errors.subscribe(err => this.notificationsService.error('Error', err.message));
  84     this.warningsSub = this.webTorrentService.errors.subscribe(err => this.notificationsService.alert('Warning', err.message));
  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) {
  94       this.webTorrentService.remove(this.video.magnetUri);
  95     }
  96
  97     // Remove player
  98     videojs(this.playerElement).dispose();
  99
 100     // Unsubscribe subscriptions
 101     this.paramsSub.unsubscribe();
 102     this.errorsSub.unsubscribe();
 103     this.warningsSub.unsubscribe();
 104   }
 105
 106   loadVideo() {
 107     // Reset the error
 108     this.error = false;
 109     // We are loading the video
 110     this.loading = true;
 111
 112     console.log('Adding ' + this.video.magnetUri + '.');
 113
 114     // The callback might never return if there are network issues
 115     // So we create a timer to inform the user the load is abnormally long
 116     this.errorTimer = window.setTimeout(() => this.loadTooLong(), VideoWatchComponent.LOADTIME_TOO_LONG);
 117
 118     this.webTorrentService.add(this.video.magnetUri, (torrent) => {
 119       // Clear the error timer
 120       window.clearTimeout(this.errorTimer);
 121       // Maybe the error was fired by the timer, so reset it
 122       this.error = false;
 123
 124       // We are not loading the video anymore
 125       this.loading = false;
 126
 127       console.log('Added ' + this.video.magnetUri + '.');
 128       torrent.files[0].renderTo(this.playerElement, { autoplay: true }, (err) => {
 129         if (err) {
 130           this.notificationsService.error('Error', 'Cannot append the file in the video element.');
 131           console.error(err);
 132         }
 133       });
 134
 135       this.runInProgress(torrent);
 136     });
 137   }
 138
 139   showReportModal(event: Event) {
 140     event.preventDefault();
 141     this.videoReportModal.show();
 142   }
 143
 144   showShareModal() {
 145     this.videoShareModal.show();
 146   }
 147
 148   showMagnetUriModal(event: Event) {
 149     event.preventDefault();
 150     this.videoMagnetModal.show();
 151   }
 152
 153   isUserLoggedIn() {
 154     return this.authService.isLoggedIn();
 155   }
 156
 157   private loadTooLong() {
 158     this.error = true;
 159     console.error('The video load seems to be abnormally long.');
 160   }
 161
 162   private setOpenGraphTags() {
 163     this.metaService.setTag('og:type', 'video');
 164
 165     this.metaService.setTag('og:title', this.video.name);
 166     this.metaService.setTag('name', this.video.name);
 167
 168     this.metaService.setTag('og:description', this.video.description);
 169     this.metaService.setTag('description', this.video.description);
 170
 171     this.metaService.setTag('og:image', this.video.thumbnailPath);
 172
 173     this.metaService.setTag('og:duration', this.video.duration);
 174
 175     this.metaService.setTag('og:site_name', 'PeerTube');
 176
 177     this.metaService.setTag('og:url', window.location.href);
 178     this.metaService.setTag('url', window.location.href);
 179   }
 180
 181   private runInProgress(torrent: any) {
 182     // Refresh each second
 183     this.torrentInfosInterval = window.setInterval(() => {
 184       this.ngZone.run(() => {
 185         this.downloadSpeed = torrent.downloadSpeed;
 186         this.numPeers = torrent.numPeers;
 187         this.uploadSpeed = torrent.uploadSpeed;
 188       });
 189     }, 1000);
 190   }
 191 }