<?php

namespace WerkraumMedia\ThueCat\Domain\Import\JsonLD\Parser;

/*
 * Copyright (C) 2021 Daniel Siepmann <coding@daniel-siepmann.de>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

class LanguageValues
{
    public function getValueForLanguage(
        array $property,
        string $language
    ): string {
        if (
            $this->doesLanguageMatch($property, $language)
            && isset($property['@value'])
        ) {
            return $property['@value'];
        }

        foreach ($property as $languageEntry) {
            if (
                is_array($languageEntry)
                && $this->doesLanguageMatch($languageEntry, $language)
            ) {
                return $languageEntry['@value'];
            }
        }

        return '';
    }

    private function doesLanguageMatch(
        array $property,
        string $language
    ): bool {
        return isset($property['@language'])
            && (
                $property['@language'] === $language
                || $language === ''
            )
            ;
    }
}