<?php

/**
 * Polish Stemmer
 *
 * Lightweight suffix-based stemmer for Polish.
 *
 * @package ProRank\SEO\Modules\Content\InternalLinking\Parser\MultiLanguage\Languages
 * @since   1.0.0
 */

declare(strict_types=1);

namespace ProRank\SEO\Modules\Content\InternalLinking\Parser\MultiLanguage\Languages;

use ProRank\SEO\Modules\Content\InternalLinking\Parser\MultiLanguage\Stemmer;

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

class PolishStemmer extends Stemmer {
    public function __construct() {
        parent::__construct('pl');
    }

    public function stem(string $word): string {
        $word = $this->normalize($word);
        if (strlen($word) <= 3) {
            return $word;
        }

        $suffixes = [
            'owania', 'owani', 'owano', 'owego', 'owymi', 'owych',
            'anie', 'enie', 'ami', 'ach', 'ego', 'owa', 'owe',
            'owie', 'em', 'ie', 'a', 'y', 'i',
        ];

        foreach ($suffixes as $suffix) {
            if (str_ends_with($word, $suffix) && strlen($word) > strlen($suffix) + 2) {
                return substr($word, 0, -strlen($suffix));
            }
        }

        return $word;
    }
}
