client/src/app/+admin/requests/request-stats/request-stats.component.ts

   1 import { setInterval } from 'timers'
   2 import { Component, OnInit, OnDestroy } from '@angular/core';
   3
   4 import { RequestService, RequestStats } from '../shared';
   5
   6 @Component({
   7         selector: 'my-request-stats',
   8         templateUrl: './request-stats.component.html',
   9   styleUrls: [ './request-stats.component.scss' ]
  10 })
  11 export class RequestStatsComponent implements OnInit, OnDestroy {
  12   stats: RequestStats = null;
  13
  14   private interval: NodeJS.Timer = null;
  15
  16   constructor(private requestService: RequestService) {  }
  17
  18   ngOnInit() {
  19     this.getStats();
  20     this.runInterval();
  21   }
  22
  23   ngOnDestroy() {
  24     if (this.stats !== null && this.stats.secondsInterval !== null) {
  25       clearInterval(this.interval);
  26     }
  27   }
  28
  29   getStats() {
  30     this.requestService.getStats().subscribe(
  31       stats => this.stats = stats,
  32
  33       err => alert(err.text)
  34     );
  35   }
  36
  37   private runInterval() {
  38     this.interval = setInterval(() => {
  39       this.stats.remainingMilliSeconds -= 1000;
  40
  41       if (this.stats.remainingMilliSeconds <= 0) {
  42         setTimeout(() => this.getStats(), this.stats.remainingMilliSeconds + 100);
  43       }
  44     }, 1000);
  45   }
  46
  47
  48 }