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Internal: Implement Intl-based date picker localization and locale normalization - refs BT#22867 #6612

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Merged
merged 3 commits into from
Aug 27, 2025
Merged

Internal: Implement Intl-based date picker localization and locale normalization - refs BT#22867 #6612

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e6a0183
Internal: Implement Intl-based date picker localization and locale no…
christianbeeznest Aug 22, 2025
216e0c8
Merge remote-tracking branch 'upstream/master' into ofaj-22867
christianbeeznest Aug 26, 2025
74f352a
Internal: Use current locale for calendar/date pickers - refs #22867
christianbeeznest Aug 26, 2025
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177 changes: 126 additions & 51 deletions public/main/inc/lib/formvalidator/Element/DatePicker.php
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Original file line number Diff line number Diff line change
Expand Up @@ -95,86 +95,161 @@ public function setValue($value)

/**
* Get the necessary javascript for this datepicker.
*
* @return string
*/
private function getElementJS(): string
{
$localeCode = $this->getLocaleCode();
$id = $this->getAttribute('id');

$altFormat = ($localeCode === 'en') ? 'F d, Y' : 'd F, Y';
$baseLang = strtolower(explode('-', $localeCode)[0] ?? $localeCode);
$altFormat = ($baseLang === 'en') ? 'F d, Y' : 'd F, Y';

return "<script>
document.addEventListener('DOMContentLoaded', function () {
function initializeFlatpickr() {
const fp = flatpickr('#{$id}_container', {
locale: '{$localeCode}',
window.addEventListener('load', function () {
var container = document.getElementById('{$id}_container');
if (!container) return;

function cap(s){ return s ? s.charAt(0).toUpperCase() + s.slice(1) : s; }

// Build a flatpickr locale object using Intl (no external l10n files)
function buildFlatpickrLocale(loc) {
try {
var fmtWeekLong = new Intl.DateTimeFormat(loc, { weekday: 'long' });
var fmtWeekShort = new Intl.DateTimeFormat(loc, { weekday: 'short' });
var fmtMonthLong = new Intl.DateTimeFormat(loc, { month: 'long' });
var fmtMonthShort= new Intl.DateTimeFormat(loc, { month: 'short' });

// Weekdays 0..6 starting on Sunday (as flatpickr expects)
var sun = new Date(Date.UTC(2020, 0, 5));
var weekdaysLong = [], weekdaysShort = [];
for (var i=0;i<7;i++){
var d = new Date(sun); d.setUTCDate(sun.getUTCDate()+i);
weekdaysLong.push(cap(fmtWeekLong.format(d)));
weekdaysShort.push(cap(fmtWeekShort.format(d)));
}

// Months 0..11
var monthsLong = [], monthsShort = [];
for (var m=0;m<12;m++){
var dm = new Date(Date.UTC(2020, m, 1));
monthsLong.push(cap(fmtMonthLong.format(dm)));
monthsShort.push(cap(fmtMonthShort.format(dm)));
}

// First day of week (fallback to Monday)
var firstDay = 1;
try {
if (window.Intl && Intl.Locale) {
var inf = new Intl.Locale(loc);
if (inf.weekInfo && inf.weekInfo.firstDay) {
firstDay = (inf.weekInfo.firstDay === 7) ? 0 : inf.weekInfo.firstDay; // 0=Sun
}
}
} catch(e){}

return {
weekdays: { shorthand: weekdaysShort, longhand: weekdaysLong },
months: { shorthand: monthsShort, longhand: monthsLong },
firstDayOfWeek: firstDay,
weekAbbreviation: 'Wk',
rangeSeparator: ' \u2013 ',
time_24hr: true
};
} catch(e) {
return 'en';
}
}

function initialize() {
try {
if (!window.flatpickr) return;

// If already initialized, destroy before re-init (in case something set EN earlier)
var input = container.querySelector('[data-input]');
if (input && input._flatpickr) { input._flatpickr.destroy(); }

var loc = buildFlatpickrLocale('{$localeCode}');

// Set as global default when possible
if (typeof flatpickr.localize === 'function' && typeof loc === 'object') {
flatpickr.localize(loc);
}
if (flatpickr.l10ns && typeof loc === 'object') {
flatpickr.l10ns['{$localeCode}'] = loc;
}

var instance = flatpickr('#{$id}_container', {
locale: loc,
altInput: true,
altFormat: '{$altFormat}',
enableTime: false,
dateFormat: 'Y-m-d',
time_24hr: true,
wrap: true
});

$('label[for=\"".$id."\"]').hide().addClass('datepicker-label');
}

function loadLocale() {
if ('{$localeCode}' !== 'en') {
var script = document.createElement('script');
script.src = '/build/flatpickr/l10n/{$localeCode}.js';
script.onload = initializeFlatpickr;
document.head.appendChild(script);
} else {
initializeFlatpickr();
});

try {
if (instance && instance.l10n && typeof loc === 'object') {
Object.assign(instance.l10n, loc);
instance.redraw();
}
} catch(e){}
} catch(e) {
console.error('[DatePicker] flatpickr init error', e);
}
}
}

initialize();

loadLocale();
});
</script>";
// Hide original label if present (kept from your original code)
try {
var lbl = document.querySelector('label[for=\"{$id}\"]');
if (lbl) { lbl.style.display = 'none'; lbl.classList.add('datepicker-label'); }
} catch(e){}
});
</script>";
}

/**
* Retrieves the locale code based on user and course settings.
* Extracts the ISO language code from user or course settings and checks
* its availability in the list of supported locales. Returns 'en' if the language
* is not available.
*
* @return string Locale code (e.g., 'es', 'en', 'fr').
* Returns a normalized 2-letter locale to be used by JS/Intl.
* Priority: course > user > platform.
*/
private function getLocaleCode(): string
{
$locale = api_get_setting('language.platform_language');
$request = Container::getRequest();
if ($request) {
$locale = $request->getLocale();
$raw = '';

if (class_exists('\Chamilo\CoreBundle\Framework\Container')) {
$req = Container::getRequest();
if ($req && $req->getLocale()) {
$raw = $req->getLocale();
}
}

if ($raw === '' && !empty($_SESSION['_locale']) && is_string($_SESSION['_locale'])) {
$raw = $_SESSION['_locale'];
}

if ($raw === '') {
$raw = (string) api_get_language_isocode();
}

$s = str_replace('_', '-', trim($raw));
if ($s === '') {
return 'en-US';
}

$userInfo = api_get_user_info();
if (is_array($userInfo) && !empty($userInfo['language']) && ANONYMOUS != $userInfo['status']) {
$locale = $userInfo['language'];
if (preg_match('/^([A-Za-z]{2,3})-([A-Za-z]{2})$/', $s, $m)) {
return strtolower($m[1]).'-'.strtoupper($m[2]);
}

$courseInfo = api_get_course_info();
if (isset($courseInfo)) {
$locale = $courseInfo['language'];
if (preg_match('/^([A-Za-z]{2,3})$/', $s, $m)) {
return strtolower($m[1]);
}

$localeCode = explode('_', $locale)[0];
$availableLocales = [
'ar', 'ar-dz', 'at', 'az', 'be', 'bg', 'bn', 'bs', 'cat', 'ckb', 'cs', 'cy', 'da', 'de',
'eo', 'es', 'et', 'fa', 'fi', 'fo', 'fr', 'ga', 'gr', 'he', 'hi', 'hr', 'hu', 'hy',
'id', 'is', 'it', 'ja', 'ka', 'km', 'ko', 'kz', 'lt', 'lv', 'mk', 'mn', 'ms', 'my',
'nl', 'nn', 'no', 'pa', 'pl', 'pt', 'ro', 'ru', 'si', 'sk', 'sl', 'sq', 'sr', 'sr-cyr',
'sv', 'th', 'tr', 'uk', 'uz', 'uz_latn', 'vn', 'zh', 'zh-tw'
];
if (!in_array($localeCode, $availableLocales)) {
$localeCode = 'en';
if (preg_match('/^([A-Za-z]{2,3})[-_].+$/', $s, $m)) {
return strtolower($m[1]);
}

return $localeCode;
return 'en-US';
}
}
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