<?php
/**
 * Copyright since 2007 PrestaShop SA and Contributors
 * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.md.
 * It is also available through the world-wide-web at this URL:
 * https://opensource.org/licenses/OSL-3.0
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@prestashop.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
 * versions in the future. If you wish to customize PrestaShop for your
 * needs please refer to https://devdocs.prestashop.com/ for more information.
 *
 * @author    PrestaShop SA and Contributors <contact@prestashop.com>
 * @copyright Since 2007 PrestaShop SA and Contributors
 * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 */
function reorderpositions()
{
    $res = true;
    $ps_lang_default = Db::getInstance()->getValue('SELECT value
		FROM `' . _DB_PREFIX_ . 'configuration`
		WHERE name="PS_LANG_DEFAULT"');
    /* Clean products positions */
    $cat = Db::getInstance()->executeS('SELECT id_category FROM `' . _DB_PREFIX_ . 'category`');
    if ($cat) {
        foreach ($cat as $categ) {
            $id_category = $categ['id_category'];
            $result = Db::getInstance()->executeS('
				SELECT `id_product`
				FROM `' . _DB_PREFIX_ . 'category_product`
				WHERE `id_category` = ' . $id_category . '
				ORDER BY `position`');
            $sizeof = count($result);
            for ($i = 0; $i < $sizeof; ++$i) {
                $res &= Db::getInstance()->execute('
					UPDATE `' . _DB_PREFIX_ . 'category_product`
					SET `position` = ' . $i . '
					WHERE `id_category` = ' . $id_category . '
					AND `id_product` = ' . (int) ($result[$i]['id_product']));
            }
        }
    }

    $cat_parent = Db::getInstance()->executeS('SELECT DISTINCT c.id_parent FROM `' . _DB_PREFIX_ . 'category` c WHERE id_category != 1');
    foreach ($cat_parent as $parent) {
        $result = Db::getInstance()->executeS('
							SELECT DISTINCT c.*, cl.*
							FROM `' . _DB_PREFIX_ . 'category` c
							LEFT JOIN `' . _DB_PREFIX_ . 'category_lang` cl ON (c.`id_category` = cl.`id_category` AND `id_lang` = ' . $ps_lang_default . ')
							WHERE c.id_parent = ' . (int) ($parent['id_parent']) . '
							ORDER BY name ASC');
        foreach ($result as $i => $categ) {
            Db::getInstance()->execute('
			UPDATE `' . _DB_PREFIX_ . 'category`
			SET `position` = ' . (int) ($i) . '
			WHERE `id_parent` = ' . (int) ($categ['id_parent']) . '
			AND `id_category` = ' . (int) ($categ['id_category']));
        }

        $result = Db::getInstance()->executeS('
							SELECT DISTINCT c.*, cl.*
							FROM `' . _DB_PREFIX_ . 'category` c
							LEFT JOIN `' . _DB_PREFIX_ . 'category_lang` cl ON (c.`id_category` = cl.`id_category`)
							WHERE c.id_parent = ' . (int) ($parent['id_parent']) . '
							ORDER BY name ASC');

        // Remove number from category name
        foreach ($result as $i => $categ) {
            Db::getInstance()->execute('UPDATE `' . _DB_PREFIX_ . 'category` c
			LEFT JOIN `' . _DB_PREFIX_ . 'category_lang` cl ON (c.`id_category` = cl.`id_category`)
			SET `name` = \'' . preg_replace('/^[0-9]+\./', '', $categ['name']) . '\'
			WHERE c.id_category = ' . (int) ($categ['id_category']) . ' AND id_lang = \'' . (int) ($categ['id_lang']) . '\'');
        }
    }

    /* Clean CMS positions */
    $cms_cat = Db::getInstance()->executeS('SELECT id_cms_category FROM `' . _DB_PREFIX_ . 'cms_category` WHERE active=1');
    if ($cms_cat) {
        foreach ($cms_cat as $i => $categ) {
            $id_category_parent = $categ['id_cms_category'];
            $result &= Db::getInstance()->executeS('
				SELECT `id_cms_category`
				FROM `' . _DB_PREFIX_ . 'cms_category`
				WHERE `id_parent` = ' . (int) $id_category_parent . '
				ORDER BY `position`');
            $sizeof = count($result);
            for ($i = 0; $i < $sizeof; ++$i) {
                $sql = 'UPDATE `' . _DB_PREFIX_ . 'cms_category`
						SET `position` = ' . (int) $i . '
						WHERE `id_parent` = ' . (int) $id_category_parent . '
						AND `id_cms_category` = ' . (int) $result[$i]['id_cms_category'];
                $res &= Db::getInstance()->execute($sql);
            }
        }
    }
}