<?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 Academic Free License version 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/AFL-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.
 *
 * @author    PrestaShop SA and Contributors <contact@prestashop.com>
 * @copyright Since 2007 PrestaShop SA and Contributors
 * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License version 3.0
 */
namespace PrestaShop\Module\Ps_metrics\Middleware;

abstract class Middleware
{
    /**
     * @var Middleware
     */
    private $next;
    /**
     * @param Middleware $next
     *
     * @return Middleware
     */
    public function linkWith(\PrestaShop\Module\Ps_metrics\Middleware\Middleware $next)
    {
        $this->next = $next;
        return $next;
    }
    /**
     * @param mixed $response
     *
     * @return array
     */
    public function execute($response)
    {
        if (null === $this->next) {
            return (array) $response;
        }
        return $this->next->execute($response);
    }
}