<?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 set_stock_available()
{
    $res = true;
    //Get all products with positive quantity
    $resource = Db::getInstance()->query('
		SELECT quantity, id_product, out_of_stock
		FROM `' . _DB_PREFIX_ . 'product`
		WHERE `active` = 1
	');

    while ($row = Db::getInstance()->nextRow($resource)) {
        $quantity = 0;

        //Try to get product attribues
        $attributes = Db::getInstance()->executeS(
            '
			SELECT quantity, id_product_attribute
			FROM `' . _DB_PREFIX_ . 'product_attribute`
			WHERE `id_product` = ' . (int) $row['id_product']
        );

        //Add each attribute to stock_available
        foreach ($attributes as $attribute) {
            // add to global quantity
            $quantity += $attribute['quantity'];

            //add stock available for attributes
            $res &= Db::getInstance()->execute('
				INSERT INTO `' . _DB_PREFIX_ . 'stock_available`
				(`id_product`, `id_product_attribute`, `id_shop`, `id_group_shop`, `quantity`, `depends_on_stock`, `out_of_stock`)
				VALUES
				("' . (int) $row['id_product'] . '", "' . (int) $attribute['id_product_attribute'] . '", "1", "0", "' . (int) $attribute['quantity'] . '", "0", "' . (int) $row['out_of_stock'] . '")
			');
            if (!$res) {
                return ['error' => Db::getInstance()->getNumberError(), 'msg' => '(attributes)' . Db::getInstance()->getMsgError()];
            }
        }

        if (count($attributes) == 0) {
            $quantity = (int) $row['quantity'];
        }

        //Add stock available for product;
        $res &= Db::getInstance()->execute('
			INSERT INTO `' . _DB_PREFIX_ . 'stock_available`
			(`id_product`, `id_product_attribute`, `id_shop`, `id_group_shop`, `quantity`, `depends_on_stock`, `out_of_stock`)
			VALUES
			("' . (int) $row['id_product'] . '", "0", "1", "0", "' . (int) $quantity . '", "0", "' . (int) $row['out_of_stock'] . '")
		');
        if (!$res) {
            return ['error' => Db::getInstance()->getNumberError(), 'msg' => '(products)' . Db::getInstance()->getMsgError()];
        }
    }

    return $res;
}