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1 | import { Pipe, PipeTransform } from '@angular/core' | |
2 | import { prepareIcu } from '@app/helpers' | |
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 | private yearICU = prepareIcu($localize`{interval, plural, =1 {1 year ago} other {{interval} years ago}}`) | |
8 | private monthICU = prepareIcu($localize`{interval, plural, =1 {1 month ago} other {{interval} months ago}}`) | |
9 | private weekICU = prepareIcu($localize`{interval, plural, =1 {1 week ago} other {{interval} weeks ago}}`) | |
10 | private dayICU = prepareIcu($localize`{interval, plural, =1 {1 day ago} other {{interval} days ago}}`) | |
11 | private hourICU = prepareIcu($localize`{interval, plural, =1 {1 hour ago} other {{interval} hours ago}}`) | |
12 | ||
13 | transform (arg: number | Date | string) { | |
14 | const argDate = new Date(arg) | |
15 | const seconds = Math.floor((Date.now() - argDate.getTime()) / 1000) | |
16 | ||
17 | let interval = Math.floor(seconds / 31536000) | |
18 | if (interval >= 1) { | |
19 | return this.yearICU({ interval }, $localize`${interval} year(s) ago`) | |
20 | } | |
21 | ||
22 | interval = Math.floor(seconds / 2419200) | |
23 | // 12 months = 360 days, but a year ~ 365 days | |
24 | // Display "1 year ago" rather than "12 months ago" | |
25 | if (interval >= 12) return $localize`1 year ago` | |
26 | ||
27 | if (interval >= 1) { | |
28 | return this.monthICU({ interval }, $localize`${interval} month(s) ago`) | |
29 | } | |
30 | ||
31 | interval = Math.floor(seconds / 604800) | |
32 | // 4 weeks ~ 28 days, but our month is 30 days | |
33 | // Display "1 month ago" rather than "4 weeks ago" | |
34 | if (interval >= 4) return $localize`1 month ago` | |
35 | ||
36 | if (interval >= 1) { | |
37 | return this.weekICU({ interval }, $localize`${interval} week(s) ago`) | |
38 | } | |
39 | ||
40 | interval = Math.floor(seconds / 86400) | |
41 | if (interval >= 1) { | |
42 | return this.dayICU({ interval }, $localize`${interval} day(s) ago`) | |
43 | } | |
44 | ||
45 | interval = Math.floor(seconds / 3600) | |
46 | if (interval >= 1) { | |
47 | return this.hourICU({ interval }, $localize`${interval} hour(s) ago`) | |
48 | } | |
49 | ||
50 | interval = Math.floor(seconds / 60) | |
51 | if (interval >= 1) return $localize`${interval} min ago` | |
52 | ||
53 | return $localize`just now` | |
54 | } | |
55 | } |