DurationValidator.php

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<?php

declare(strict_types=1);

namespace ILIAS\MetaData\Repository\Validation\Data;

use ILIAS\MetaData\Elements\ElementInterface;
use ILIAS\MetaData\DataHelper\DataHelperInterface;

class DurationValidator implements DataValidatorInterface
{
    use DataFetcher;

    protected DataHelperInterface $data_helper;

    public function __construct(
        DataHelperInterface $data_helper
    ) {
        $this->data_helper = $data_helper;
    }

    public function isValid(
        ElementInterface $element,
        bool $ignore_marker
    ): bool {
        $value = $this->dataValue($element, $ignore_marker);
        if (!$this->data_helper->matchesDurationPattern($value)) {
            return false;
        }
        foreach ($this->data_helper->durationToIterator($value) as $match) {
            if (isset($match) && (int) $match < 0) {
                return false;
            }
        }
        return true;
    }
}