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File: LanguagesPartitioned.php

<?php
declare(strict_types=1);

namespace Sokil\IsoCodes\Database;

use Sokil\IsoCodes\AbstractPartitionedDatabase;
use Sokil\IsoCodes\Database\Languages\Language;

class LanguagesPartitioned extends AbstractPartitionedDatabase implements LanguagesInterface
{
    public static function getISONumber(): string
    {
        return '639-3';
    }

    /**
     * @param string[] $entry
     */
    protected function arrayToEntry(array $entry): Language
    {
        return new Language(
            $entry['name'],
            $entry['alpha_3'],
            $entry['scope'],
            $entry['type'],
            !empty($entry['inverted_name']) ? $entry['inverted_name'] : null,
            !empty($entry['alpha_2']) ? $entry['alpha_2'] : null
        );
    }

    public function getByAlpha2(string $alpha2): ?Language
    {
        $language = null;

        foreach ($this->loadFromJSONFile('/alpha2/' . $alpha2[0]) as $languageRaw) {
            if ($languageRaw['alpha_2'] === $alpha2) {
                $language = $this->arrayToEntry($languageRaw);
            }
        }

        return $language;
    }

    public function getByAlpha3(string $alpha3): ?Language
    {
        $language = null;

        foreach ($this->loadFromJSONFile('/alpha3/' . substr($alpha3, 0, 2)) as $languageRaw) {
            if ($languageRaw['alpha_3'] === $alpha3) {
                $language = $this->arrayToEntry($languageRaw);
            }
        }

        return $language;
    }
}