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
   4 import { ModalDirective } from 'ng2-bootstrap/components/modal';
   5 import { MetaService } from 'ng2-meta';
   6
   7 import { Video, VideoService } from '../shared';
   8 import { WebTorrentService } from './webtorrent.service';
   9
  10 @Component({
  11   selector: 'my-video-watch',
  12   templateUrl: './video-watch.component.html',
  13   styleUrls: [ './video-watch.component.scss' ]
  14 })
  15
  16 export class VideoWatchComponent implements OnInit, OnDestroy {
  17   private static LOADTIME_TOO_LONG: number = 30000;
  18
  19   @ViewChild('magnetUriModal') magnetUriModal: ModalDirective;
  20
  21   downloadSpeed: number;
  22   error: boolean = false;
  23   loading: boolean = false;
  24   numPeers: number;
  25   uploadSpeed: number;
  26   video: Video = null;
  27
  28   private errorTimer: NodeJS.Timer;
  29   private sub: any;
  30   private torrentInfosInterval: NodeJS.Timer;
  31
  32   constructor(
  33     private elementRef: ElementRef,
  34     private ngZone: NgZone,
  35     private route: ActivatedRoute,
  36     private videoService: VideoService,
  37     private metaService: MetaService,
  38     private webTorrentService: WebTorrentService
  39   ) {}
  40
  41   ngOnInit() {
  42     this.sub = this.route.params.subscribe(routeParams => {
  43       let id = routeParams['id'];
  44       this.videoService.getVideo(id).subscribe(
  45         video => {
  46           this.video = video;
  47           this.setOpenGraphTags();
  48           this.loadVideo();
  49         },
  50         error => alert(error.text)
  51       );
  52     });
  53   }
  54
  55   ngOnDestroy() {
  56     console.log('Removing video from webtorrent.');
  57     clearInterval(this.torrentInfosInterval);
  58     clearTimeout(this.errorTimer);
  59     this.webTorrentService.remove(this.video.magnetUri);
  60
  61     this.sub.unsubscribe();
  62   }
  63
  64   loadVideo() {
  65     // Reset the error
  66     this.error = false;
  67     // We are loading the video
  68     this.loading = true;
  69
  70     console.log('Adding ' + this.video.magnetUri + '.');
  71
  72     // The callback might never return if there are network issues
  73     // So we create a timer to inform the user the load is abnormally long
  74     this.errorTimer = setTimeout(() => this.loadTooLong(), VideoWatchComponent.LOADTIME_TOO_LONG);
  75
  76     this.webTorrentService.add(this.video.magnetUri, (torrent) => {
  77       // Clear the error timer
  78       clearTimeout(this.errorTimer);
  79       // Maybe the error was fired by the timer, so reset it
  80       this.error = false;
  81
  82       // We are not loading the video anymore
  83       this.loading = false;
  84
  85       console.log('Added ' + this.video.magnetUri + '.');
  86       torrent.files[0].appendTo(this.elementRef.nativeElement.querySelector('.embed-responsive'), (err) => {
  87         if (err) {
  88           alert('Cannot append the file.');
  89           console.error(err);
  90         }
  91       });
  92
  93       this.runInProgress(torrent);
  94     });
  95   }
  96
  97   showMagnetUriModal() {
  98     this.magnetUriModal.show();
  99   }
 100
 101   hideMagnetUriModal() {
 102     this.magnetUriModal.hide();
 103   }
 104
 105   private loadTooLong() {
 106     this.error = true;
 107     console.error('The video load seems to be abnormally long.');
 108   }
 109
 110   private setOpenGraphTags() {
 111     this.metaService.setTag('og:type', 'video');
 112
 113     this.metaService.setTag('og:title', this.video.name);
 114     this.metaService.setTag('name', this.video.name);
 115
 116     this.metaService.setTag('og:description', this.video.description);
 117     this.metaService.setTag('description', this.video.description);
 118
 119     this.metaService.setTag('og:image', this.video.thumbnailPath);
 120
 121     this.metaService.setTag('og:duration', this.video.duration);
 122
 123     this.metaService.setTag('og:site_name', 'PeerTube');
 124
 125     this.metaService.setTag('og:url', window.location.href);
 126     this.metaService.setTag('url', window.location.href);
 127   }
 128
 129   private runInProgress(torrent: any) {
 130     // Refresh each second
 131     this.torrentInfosInterval = setInterval(() => {
 132       this.ngZone.run(() => {
 133         this.downloadSpeed = torrent.downloadSpeed;
 134         this.numPeers = torrent.numPeers;
 135         this.uploadSpeed = torrent.uploadSpeed;
 136       });
 137     }, 1000);
 138   }
 139 }