<?php
/**
 * Condition grades, the pure part: the scale, and reading a grade out of whatever a shop
 * already calls it ("Kuin uusi", "Very good", "för reservdelar"). No WordPress here, so
 * it is tested on its own (tests/run.php).
 */

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

/** The scale, best first. */
function usedkit_grade_keys() {
    return array('new', 'like_new', 'excellent', 'good', 'fair', 'parts');
}

/** What a grade is in Google Merchant Center's terms (new, refurbished, used): it has no
 *  word for "for parts", which is used too. '' for no grade. */
function usedkit_grade_google($grade) {
    if ($grade === '') {
        return '';
    }
    return $grade === 'new' ? 'new' : 'used';
}

/** What a grade is in schema.org's terms, for search engines and Google Shopping. */
function usedkit_grade_schema($grade) {
    if ($grade === 'new') {
        return 'https://schema.org/NewCondition';
    }
    if ($grade === 'parts') {
        return 'https://schema.org/DamagedCondition';
    }
    return 'https://schema.org/UsedCondition';
}

function usedkit_fold($text) {
    $text = mb_strtolower(trim((string) $text), 'UTF-8');
    $from = array('ä', 'ö', 'å', 'ü', 'é', 'è', 'ê', 'à', 'â', 'ô', 'ó', 'ò', 'í', 'ì', 'ú', 'ù', 'ñ', 'ç', 'ß', 'ł', 'ę', 'ą', 'ś', 'ż', 'ź', 'ć', 'ń');
    $to   = array('a', 'o', 'a', 'u', 'e', 'e', 'e', 'a', 'a', 'o', 'o', 'o', 'i', 'i', 'u', 'u', 'n', 'c', 'ss', 'l', 'e', 'a', 's', 'z', 'z', 'c', 'n');
    return preg_replace('/\s+/', ' ', str_replace($from, $to, $text));
}

/**
 * The grade a label names, or '' when it names none. Words shops use for their grades in
 * the languages Usedkit's shops write in; the longest match wins, so "very good" is not
 * read as "good" and "kuin uusi" not as "uusi".
 */
function usedkit_grade_from_label($label) {
    static $words = array(
        'new'       => array('new', 'brand new', 'unused', 'uusi', 'kayttamaton', 'ny', 'oanvand', 'neu', 'ungebraucht', 'neuf', 'nuovo', 'nuevo', 'nowy', 'nieuw'),
        'like_new'  => array('like new', 'as new', 'mint', 'kuin uusi', 'uudenveroinen', 'nyskick', 'som ny', 'wie neu', 'neuwertig', 'comme neuf', 'come nuovo', 'como nuevo', 'jak nowy', 'zo goed als nieuw', 'como novo'),
        'excellent' => array('excellent', 'very good', 'near mint', 'erinomainen', 'erittain hyva', 'mycket bra', 'mycket gott skick', 'sehr gut', 'tres bon', 'ottimo', 'muy bueno', 'bardzo dobry', 'zeer goed', 'excelente', 'uitstekend', 'muito bom', 'mycket gott', 'tres bon etat'),
        'good'      => array('good', 'hyva', 'bra', 'gott skick', 'gut', 'bon', 'buono', 'bueno', 'dobry', 'goed', 'bom', 'bon etat', 'gott', 'buen estado'),
        'fair'      => array('fair', 'acceptable', 'well used', 'valttava', 'tyydyttava', 'kohtalainen', 'ok', 'okej', 'godtagbart', 'akzeptabel', 'correct', 'discreto', 'aceptable', 'dostateczny', 'redelijk', 'razoavel'),
        'parts'     => array('for parts', 'parts', 'not working', 'broken', 'faulty', 'spares or repair', 'rikki', 'varaosiksi', 'rikki/varaosiksi', 'viallinen', 'for reservdelar', 'trasig', 'defekt', 'pour pieces', 'per ricambi', 'para piezas', 'uszkodzony', 'defect', 'fur teile', 'na czesci', 'voor onderdelen', 'para pecas'),
    );
    $text = ' ' . preg_replace('/[^a-z0-9\/]+/', ' ', usedkit_fold($label)) . ' ';
    $best = '';
    $len = 0;
    foreach ($words as $grade => $list) {
        foreach ($list as $w) {
            if (strlen($w) > $len && strpos($text, ' ' . $w . ' ') !== false) {
                $best = $grade;
                $len = strlen($w);
            }
        }
    }
    return $best;
}

/** "Box, charger, two batteries" as a list, empty items out. */
function usedkit_split_list($text) {
    return array_values(array_filter(array_map('trim', preg_split('/[,;\n]+/', (string) $text)), 'strlen'));
}