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