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 import * as videojs from 'video.js';
   7
   8 import { Video, VideoService } from '../shared';
   9 import { WebTorrentService } from './webtorrent.service';
  10
  11 @Component({
  12   selector: 'my-video-watch',
  13   templateUrl: './video-watch.component.html',
  14   styleUrls: [ './video-watch.component.scss' ]
  15 })
  16
  17 export class VideoWatchComponent implements OnInit, OnDestroy {
  18   private static LOADTIME_TOO_LONG: number = 30000;
  19
  20   @ViewChild('magnetUriModal') magnetUriModal: ModalDirective;
  21   @ViewChild('shareModal') shareModal: ModalDirective;
  22
  23   downloadSpeed: number;
  24   error: boolean = false;
  25   loading: boolean = false;
  26   numPeers: number;
  27   player: VideoJSPlayer;
  28   playerElement: Element;
  29   uploadSpeed: number;
  30   video: Video = null;
  31   videoNotFound = false;
  32
  33   private errorTimer: NodeJS.Timer;
  34   private sub: any;
  35   private torrentInfosInterval: NodeJS.Timer;
  36
  37   constructor(
  38     private elementRef: ElementRef,
  39     private ngZone: NgZone,
  40     private route: ActivatedRoute,
  41     private videoService: VideoService,
  42     private metaService: MetaService,
  43     private webTorrentService: WebTorrentService
  44   ) {}
  45
  46   ngOnInit() {
  47     this.sub = this.route.params.subscribe(routeParams => {
  48       let id = routeParams['id'];
  49       this.videoService.getVideo(id).subscribe(
  50         video => {
  51           this.video = video;
  52           this.setOpenGraphTags();
  53           this.loadVideo();
  54         },
  55         error => {
  56           this.videoNotFound = true;
  57         }
  58       );
  59     });
  60
  61     this.playerElement = this.elementRef.nativeElement.querySelector('#video-container');
  62
  63     const videojsOptions = {
  64       controls: true,
  65       autoplay: false
  66     };
  67
  68     const self = this;
  69     videojs(this.playerElement, videojsOptions, function () {
  70       self.player = this;
  71     });
  72   }
  73
  74   ngOnDestroy() {
  75     // Remove WebTorrent stuff
  76     console.log('Removing video from webtorrent.');
  77     clearInterval(this.torrentInfosInterval);
  78     clearTimeout(this.errorTimer);
  79
  80     if (this.video !== null) {
  81       this.webTorrentService.remove(this.video.magnetUri);
  82     }
  83
  84     // Remove player
  85     videojs(this.playerElement).dispose();
  86
  87     // Unsubscribe route subscription
  88     this.sub.unsubscribe();
  89   }
  90
  91   loadVideo() {
  92     // Reset the error
  93     this.error = false;
  94     // We are loading the video
  95     this.loading = true;
  96
  97     console.log('Adding ' + this.video.magnetUri + '.');
  98
  99     // The callback might never return if there are network issues
 100     // So we create a timer to inform the user the load is abnormally long
 101     this.errorTimer = setTimeout(() => this.loadTooLong(), VideoWatchComponent.LOADTIME_TOO_LONG);
 102
 103     this.webTorrentService.add(this.video.magnetUri, (torrent) => {
 104       // Clear the error timer
 105       clearTimeout(this.errorTimer);
 106       // Maybe the error was fired by the timer, so reset it
 107       this.error = false;
 108
 109       // We are not loading the video anymore
 110       this.loading = false;
 111
 112       console.log('Added ' + this.video.magnetUri + '.');
 113       torrent.files[0].renderTo(this.playerElement, { autoplay: true }, (err) => {
 114         if (err) {
 115           alert('Cannot append the file.');
 116           console.error(err);
 117         }
 118       });
 119
 120       this.runInProgress(torrent);
 121     });
 122   }
 123
 124   showMagnetUriModal() {
 125     this.magnetUriModal.show();
 126   }
 127
 128   hideMagnetUriModal() {
 129     this.magnetUriModal.hide();
 130   }
 131
 132   showShareModal() {
 133     this.shareModal.show();
 134   }
 135
 136   hideShareModal() {
 137     this.shareModal.hide();
 138   }
 139
 140   getVideoIframeCode() {
 141     return '<iframe width="560" height="315" ' +
 142            'src="' + window.location.origin + '/videos/embed/' + this.video.id + '" ' +
 143            'frameborder="0" allowfullscreen>' +
 144            '</iframe>';
 145   }
 146
 147   getVideoUrl() {
 148     return window.location.href;
 149   }
 150
 151   private loadTooLong() {
 152     this.error = true;
 153     console.error('The video load seems to be abnormally long.');
 154   }
 155
 156   private setOpenGraphTags() {
 157     this.metaService.setTag('og:type', 'video');
 158
 159     this.metaService.setTag('og:title', this.video.name);
 160     this.metaService.setTag('name', this.video.name);
 161
 162     this.metaService.setTag('og:description', this.video.description);
 163     this.metaService.setTag('description', this.video.description);
 164
 165     this.metaService.setTag('og:image', this.video.thumbnailPath);
 166
 167     this.metaService.setTag('og:duration', this.video.duration);
 168
 169     this.metaService.setTag('og:site_name', 'PeerTube');
 170
 171     this.metaService.setTag('og:url', window.location.href);
 172     this.metaService.setTag('url', window.location.href);
 173   }
 174
 175   private runInProgress(torrent: any) {
 176     // Refresh each second
 177     this.torrentInfosInterval = setInterval(() => {
 178       this.ngZone.run(() => {
 179         this.downloadSpeed = torrent.downloadSpeed;
 180         this.numPeers = torrent.numPeers;
 181         this.uploadSpeed = torrent.uploadSpeed;
 182       });
 183     }, 1000);
 184   }
 185 }