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1 | import { Pipe, PipeTransform } from '@angular/core' | |
2 | import { I18n } from '@ngx-translate/i18n-polyfill' | |
3 | ||
4 | // Thanks: https://stackoverflow.com/questions/3177836/how-to-format-time-since-xxx-e-g-4-minutes-ago-similar-to-stack-exchange-site | |
5 | @Pipe({ name: 'myFromNow' }) | |
6 | export class FromNowPipe implements PipeTransform { | |
7 | ||
8 | constructor (private i18n: I18n) { } | |
9 | ||
10 | transform (arg: number | Date | string) { | |
11 | const argDate = new Date(arg) | |
12 | const seconds = Math.floor((Date.now() - argDate.getTime()) / 1000) | |
13 | ||
14 | let interval = Math.floor(seconds / 31536000) | |
15 | if (interval > 1) { | |
16 | return this.i18n('{{interval}} years ago', { interval }) | |
17 | } | |
18 | ||
19 | interval = Math.floor(seconds / 2592000) | |
20 | if (interval > 1) return this.i18n('{{interval}} months ago', { interval }) | |
21 | if (interval === 1) return this.i18n('{{interval}} month ago', { interval }) | |
22 | ||
23 | interval = Math.floor(seconds / 604800) | |
24 | if (interval > 1) return this.i18n('{{interval}} weeks ago', { interval }) | |
25 | if (interval === 1) return this.i18n('{{interval}} week ago', { interval }) | |
26 | ||
27 | interval = Math.floor(seconds / 86400) | |
28 | if (interval > 1) return this.i18n('{{interval}} days ago', { interval }) | |
29 | if (interval === 1) return this.i18n('{{interval}} day ago', { interval }) | |
30 | ||
31 | interval = Math.floor(seconds / 3600) | |
32 | if (interval > 1) return this.i18n('{{interval}} hours ago', { interval }) | |
33 | if (interval === 1) return this.i18n('{{interval}} hour ago', { interval }) | |
34 | ||
35 | interval = Math.floor(seconds / 60) | |
36 | if (interval >= 1) return this.i18n('{{interval}} min ago', { interval }) | |
37 | ||
38 | return this.i18n('{{interval}} sec ago', { interval: Math.max(0, seconds) }) | |
39 | } | |
40 | } |