1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24
25. 25
26. 26
27. 27
28. 28
29. 29
30. 30
31. 31
32. 32
33. 33
34. 34
35. 35
36. 36
37. 37
38. 38
39. 39
40. 40
41. 41
42. 42
43. 43

import {prettyNumber} from '../utils.js';

const {lang} = document.documentElement;

const dateFormatter = new Intl.DateTimeFormat(lang, {year: 'numeric', month: 'long', day: 'numeric'});
const shortDateFormatter = new Intl.DateTimeFormat(lang, {year: 'numeric', month: 'short', day: 'numeric'});
const dateTimeFormatter = new Intl.DateTimeFormat(lang, {year: 'numeric', month: 'short', day: 'numeric', hour: 'numeric', minute: 'numeric', second: 'numeric'});

export function initFormattingReplacements() {
  // replace english formatted numbers with locale-specific separators
  for (const el of document.getElementsByClassName('js-pretty-number')) {
    const num = Number(el.getAttribute('data-value'));
    const formatted = prettyNumber(num, lang);
    if (formatted && formatted !== el.textContent) {
      el.textContent = formatted;
    }
  }

  // for each <time></time> tag, if it has the data-format attribute, format
  // the text according to the user's chosen locale and formatter.
  formatAllTimeElements();
}

function formatAllTimeElements() {
  const timeElements = document.querySelectorAll('time[data-format]');
  for (const timeElement of timeElements) {
    const formatter = getFormatter(timeElement.dataset.format);
    timeElement.textContent = formatter.format(new Date(timeElement.dateTime));
  }
}

function getFormatter(format) {
  switch (format) {
    case 'date':
      return dateFormatter;
    case 'short-date':
      return shortDateFormatter;
    case 'date-time':
      return dateTimeFormatter;
    default:
      throw new Error('Unknown format');
  }
}