<?php
/**
 * Mirasvit
 *
 * This source file is subject to the Mirasvit Software License, which is available at https://mirasvit.com/license/.
 * Do not edit or add to this file if you wish to upgrade the to newer versions in the future.
 * If you wish to customize this module for your needs.
 * Please refer to http://www.magentocommerce.com for more information.
 *
 * @category  Mirasvit
 * @package   mirasvit/module-search
 * @version   1.0.151
 * @copyright Copyright (C) 2020 Mirasvit (https://mirasvit.com/)
 */


//@codingStandardsIgnoreFile
namespace Mirasvit\Search\Service\Stemming;

use Mirasvit\Search\Api\Service\Stemming\StemmerInterface;

class En implements StemmerInterface
{
    /**
     * @var array
     */
    public static $plural = [
        '/(quiz)$/i'                     => '$1zes',
        '/^(ox)$/i'                      => '$1en',
        '/([m|l])ouse$/i'                => '$1ice',
        '/(matr|vert|ind)ix|ex$/i'       => '$1ices',
        '/(x|ch|ss|sh)$/i'               => '$1es',
        '/([^aeiouy]|qu)y$/i'            => '$1ies',
        '/(hive)$/i'                     => '$1s',
        '/(?:([^f])fe|([lr])f)$/i'       => '$1$2ves',
        '/(shea|lea|loa|thie)f$/i'       => '$1ves',
        '/sis$/i'                        => 'ses',
        '/([ti])um$/i'                   => '$1a',
        '/(tomat|potat|ech|her|vet)o$/i' => '$1oes',
        '/(bu)s$/i'                      => '$1ses',
        '/(alias)$/i'                    => '$1es',
        '/(octop)us$/i'                  => '$1i',
        '/(ax|test)is$/i'                => '$1es',
        '/(us)$/i'                       => '$1es',
        '/s$/i'                          => 's',
        '/$/'                            => 's',
    ];

    /**
     * @var array
     */
    public static $singular = [
        '/(quiz)zes$/i'                                                    => '$1',
        '/(matr)ices$/i'                                                   => '$1ix',
        '/(vert|ind)ices$/i'                                               => '$1ex',
        '/^(ox)en$/i'                                                      => '$1',
        '/(alias)es$/i'                                                    => '$1',
        '/(octop|vir)i$/i'                                                 => '$1us',
        '/(cris|ax|test)es$/i'                                             => '$1is',
        '/(shoe)s$/i'                                                      => '$1',
        '/(o)es$/i'                                                        => '$1',
        '/(bus)es$/i'                                                      => '$1',
        '/([m|l])ice$/i'                                                   => '$1ouse',
        '/(x|ch|ss|sh)es$/i'                                               => '$1',
        '/(m)ovies$/i'                                                     => '$1ovie',
        '/(s)eries$/i'                                                     => '$1eries',
        '/([^aeiouy]|qu)ies$/i'                                            => '$1y',
        '/([lr])ves$/i'                                                    => '$1f',
        '/(tive)s$/i'                                                      => '$1',
        '/(hive)s$/i'                                                      => '$1',
        '/(li|wi|kni)ves$/i'                                               => '$1fe',
        '/(shea|loa|lea|thie)ves$/i'                                       => '$1f',
        '/(^analy)ses$/i'                                                  => '$1sis',
        '/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/i' => '$1$2sis',
        '/([ti])a$/i'                                                      => '$1um',
        '/(n)ews$/i'                                                       => '$1ews',
        '/(h|bl)ouses$/i'                                                  => '$1ouse',
        '/(corpse)s$/i'                                                    => '$1',
        '/(us)es$/i'                                                       => '$1',
        '/s$/i'                                                            => '',
    ];

    /**
     * @var array
     */
    public static $irregular = [
        'move'   => 'moves',
        'foot'   => 'feet',
        'goose'  => 'geese',
        'sex'    => 'sexes',
        'child'  => 'children',
        'tooth'  => 'teeth',
        'person' => 'people',
        'hoodie' => 'hoodies',
    ];

    /**
     * @var array
     */
    public static $uncountable = [
        'sheep',
        'fish',
        'deer',
        'series',
        'species',
        'money',
        'rice',
        'information',
        'equipment',
    ];

    /**
     * Возврашает слово во множественном числе (shoe -> shoes).
     *
     * @param string $string
     *
     * @return string
     */
    public function pluralize($string)
    {
        // save some time in the case that singular and plural are the same
        if (in_array(strtolower($string), self::$uncountable)) {
            return $string;
        }

        // check for irregular singular forms
        foreach (self::$irregular as $pattern => $result) {
            $pattern = '/' . $pattern . '$/i';

            if (preg_match($pattern, $string)) {
                return preg_replace($pattern, $result, $string);
            }
        }

        // check for matches using regular expressions
        foreach (self::$plural as $pattern => $result) {
            if (preg_match($pattern, $string)) {
                return preg_replace($pattern, $result, $string);
            }
        }

        return $string;
    }

    /**
     * Возврашает слово в одиночном числе (shoes -> shoe).
     *
     * @param string $string
     *
     * @return string
     */
    public function singularize($string)
    {
        if (preg_match('/[0-9]+/', $string)) {
            return $string;
        }

        // save some time in the case that singular and plural are the same
        if (in_array(strtolower($string), self::$uncountable)) {
            return $string;
        }

        // check for irregular plural forms
        foreach (self::$irregular as $result => $pattern) {
            $pattern = '/' . $pattern . '$/i';

            if (preg_match($pattern, $string)) {
                return preg_replace($pattern, $result, $string);
            }
        }

        // check for matches using regular expressions
        foreach (self::$singular as $pattern => $result) {
            if (preg_match($pattern, $string)) {
                $sing = preg_replace($pattern, $result, $string);
                if (strlen($sing) >= 3) {
                    return $sing;
                } else {
                    return $string;
                }
            }
        }

        return $string;
    }
}