client/src/app/shared/misc/from-now.pipe.ts

   1 import { Pipe, PipeTransform } from '@angular/core'
   2
   3 // Thanks: https://stackoverflow.com/questions/3177836/how-to-format-time-since-xxx-e-g-4-minutes-ago-similar-to-stack-exchange-site
   4 @Pipe({ name: 'myFromNow' })
   5 export class FromNowPipe implements PipeTransform {
   6
   7   transform (value: number) {
   8     const seconds = Math.floor((Date.now() - value) / 1000)
   9
  10     let interval = Math.floor(seconds / 31536000)
  11     if (interval > 1) {
  12       return interval + ' years ago'
  13     }
  14
  15     interval = Math.floor(seconds / 2592000)
  16     if (interval > 1) return interval + ' months ago'
  17     if (interval === 1) return interval + ' month ago'
  18
  19     interval = Math.floor(seconds / 604800)
  20     if (interval > 1) return interval + ' weeks ago'
  21     if (interval === 1) return interval + ' week ago'
  22
  23     interval = Math.floor(seconds / 86400)
  24     if (interval > 1) return interval + ' days ago'
  25     if (interval === 1) return interval + ' day ago'
  26
  27     interval = Math.floor(seconds / 3600)
  28     if (interval > 1) return interval + ' hours ago'
  29     if (interval === 1) return interval + ' hour ago'
  30
  31     interval = Math.floor(seconds / 60)
  32     if (interval >= 1) return interval + ' min ago'
  33
  34     return Math.floor(seconds) + ' sec ago'
  35   }
  36 }