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

   1 import { setInterval, setTimeout } from 'timers'
   2 import { Component, ElementRef, NgZone, OnDestroy, OnInit, ViewChild } from '@angular/core';
   3 import { ActivatedRoute } from '@angular/router';
   4
   5 import { MetaService } from 'ng2-meta';
   6 import * as videojs from 'video.js';
   7
   8 import { VideoMagnetComponent } from './video-magnet.component';
   9 import { VideoShareComponent } from './video-share.component';
  10 import { Video, VideoService } from '../shared';
  11 import { WebTorrentService } from './webtorrent.service';
  12
  13 @Component({
  14   selector: 'my-video-watch',
  15   templateUrl: './video-watch.component.html',
  16   styleUrls: [ './video-watch.component.scss' ]
  17 })
  18
  19 export class VideoWatchComponent implements OnInit, OnDestroy {
  20   private static LOADTIME_TOO_LONG: number = 30000;
  21
  22   @ViewChild('videoMagnetModal') videoMagnetModal: VideoMagnetComponent;
  23   @ViewChild('videoShareModal') videoShareModal: VideoShareComponent;
  24
  25   downloadSpeed: number;
  26   error: boolean = false;
  27   loading: boolean = false;
  28   numPeers: number;
  29   player: VideoJSPlayer;
  30   playerElement: Element;
  31   uploadSpeed: number;
  32   video: Video = null;
  33   videoNotFound = false;
  34
  35   private errorTimer: NodeJS.Timer;
  36   private sub: any;
  37   private torrentInfosInterval: NodeJS.Timer;
  38
  39   constructor(
  40     private elementRef: ElementRef,
  41     private ngZone: NgZone,
  42     private route: ActivatedRoute,
  43     private videoService: VideoService,
  44     private metaService: MetaService,
  45     private webTorrentService: WebTorrentService
  46   ) {}
  47
  48   ngOnInit() {
  49     this.sub = this.route.params.subscribe(routeParams => {
  50       let id = routeParams['id'];
  51       this.videoService.getVideo(id).subscribe(
  52         video => {
  53           this.video = video;
  54           this.setOpenGraphTags();
  55           this.loadVideo();
  56         },
  57         error => {
  58           this.videoNotFound = true;
  59         }
  60       );
  61     });
  62
  63     this.playerElement = this.elementRef.nativeElement.querySelector('#video-container');
  64
  65     const videojsOptions = {
  66       controls: true,
  67       autoplay: false
  68     };
  69
  70     const self = this;
  71     videojs(this.playerElement, videojsOptions, function () {
  72       self.player = this;
  73     });
  74   }
  75
  76   ngOnDestroy() {
  77     // Remove WebTorrent stuff
  78     console.log('Removing video from webtorrent.');
  79     clearInterval(this.torrentInfosInterval);
  80     clearTimeout(this.errorTimer);
  81
  82     if (this.video !== null) {
  83       this.webTorrentService.remove(this.video.magnetUri);
  84     }
  85
  86     // Remove player
  87     videojs(this.playerElement).dispose();
  88
  89     // Unsubscribe route subscription
  90     this.sub.unsubscribe();
  91   }
  92
  93   loadVideo() {
  94     // Reset the error
  95     this.error = false;
  96     // We are loading the video
  97     this.loading = true;
  98
  99     console.log('Adding ' + this.video.magnetUri + '.');
 100
 101     // The callback might never return if there are network issues
 102     // So we create a timer to inform the user the load is abnormally long
 103     this.errorTimer = setTimeout(() => this.loadTooLong(), VideoWatchComponent.LOADTIME_TOO_LONG);
 104
 105     this.webTorrentService.add(this.video.magnetUri, (torrent) => {
 106       // Clear the error timer
 107       clearTimeout(this.errorTimer);
 108       // Maybe the error was fired by the timer, so reset it
 109       this.error = false;
 110
 111       // We are not loading the video anymore
 112       this.loading = false;
 113
 114       console.log('Added ' + this.video.magnetUri + '.');
 115       torrent.files[0].renderTo(this.playerElement, { autoplay: true }, (err) => {
 116         if (err) {
 117           alert('Cannot append the file.');
 118           console.error(err);
 119         }
 120       });
 121
 122       this.runInProgress(torrent);
 123     });
 124   }
 125
 126   showShareModal() {
 127     this.videoShareModal.show();
 128   }
 129
 130   showMagnetUriModal() {
 131     this.videoMagnetModal.show();
 132   }
 133
 134   private loadTooLong() {
 135     this.error = true;
 136     console.error('The video load seems to be abnormally long.');
 137   }
 138
 139   private setOpenGraphTags() {
 140     this.metaService.setTag('og:type', 'video');
 141
 142     this.metaService.setTag('og:title', this.video.name);
 143     this.metaService.setTag('name', this.video.name);
 144
 145     this.metaService.setTag('og:description', this.video.description);
 146     this.metaService.setTag('description', this.video.description);
 147
 148     this.metaService.setTag('og:image', this.video.thumbnailPath);
 149
 150     this.metaService.setTag('og:duration', this.video.duration);
 151
 152     this.metaService.setTag('og:site_name', 'PeerTube');
 153
 154     this.metaService.setTag('og:url', window.location.href);
 155     this.metaService.setTag('url', window.location.href);
 156   }
 157
 158   private runInProgress(torrent: any) {
 159     // Refresh each second
 160     this.torrentInfosInterval = setInterval(() => {
 161       this.ngZone.run(() => {
 162         this.downloadSpeed = torrent.downloadSpeed;
 163         this.numPeers = torrent.numPeers;
 164         this.uploadSpeed = torrent.uploadSpeed;
 165       });
 166     }, 1000);
 167   }
 168 }