ilCertificateDateHelper.php

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<?php

declare(strict_types=1);

class ilCertificateDateHelper
{
    public function formatDate($raw_date_input, ?ilObjUser $user = null, ?int $date_format = null): string
    {
        require_once __DIR__ . '/../../../Calendar/classes/class.ilDateTime.php'; // Required because of global constant IL_CAL_DATE

        if ($date_format === null) {
            $date_format = IL_CAL_DATETIME;
        }

        if ($date_format === IL_CAL_UNIX) {
            $raw_date_input = (int) $raw_date_input;
        } else {
            $raw_date_input = (string) $raw_date_input;
        }

        $oldDatePresentationValue = ilDatePresentation::useRelativeDates();
        ilDatePresentation::setUseRelativeDates(false);
        $raw_date_input = ilDatePresentation::formatDate(
            new ilDate($raw_date_input, $date_format),
            false,
            false,
            false,
            $user
        );
        ilDatePresentation::setUseRelativeDates($oldDatePresentationValue);

        return $raw_date_input;
    }

    public function formatDateTime($raw_datetime_input, ?ilObjuser $user = null, ?int $datetime_format = null): string
    {
        require_once __DIR__ . '/../../../Calendar/classes/class.ilDateTime.php'; // Required because of global constant IL_CAL_DATE

        if ($datetime_format === null) {
            $datetime_format = IL_CAL_DATETIME;
        }

        if ($datetime_format === IL_CAL_UNIX) {
            $raw_datetime_input = (int) $raw_datetime_input;
        } else {
            $raw_datetime_input = (string) $raw_datetime_input;
        }

        $oldDatePresentationValue = ilDatePresentation::useRelativeDates();
        ilDatePresentation::setUseRelativeDates(false);

        $date = ilDatePresentation::formatDate(
            new ilDateTime($raw_datetime_input, $datetime_format),
            false,
            false,
            false,
            $user
        );

        ilDatePresentation::setUseRelativeDates($oldDatePresentationValue);

        return $date;
    }
}