prestashop-module/retailcrm/lib/api/pipeline/RetailcrmPipeline.php

<?php
/**
 * MIT License
 *
 * Copyright (c) 2021 DIGITAL RETAIL TECHNOLOGIES SL
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * 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 http://www.prestashop.com for more information.
 *
 *  @author    DIGITAL RETAIL TECHNOLOGIES SL <mail@simlachat.com>
 *  @copyright 2021 DIGITAL RETAIL TECHNOLOGIES SL
 *  @license   https://opensource.org/licenses/MIT  The MIT License
 *
 * Don't forget to prefix your containers with your own identifier
 * to avoid any conflicts with others containers.
 */

class RetailcrmPipeline
{
    /**
     * @var array
     */
    private $middlewares;

    /**
     * @var callable
     */
    private $action;

    /**
     * @var callable
     */
    private $pipeline;

    /**
     * @param RetailcrmApiRequest $request
     *
     * @return callable
     */
    public function run(RetailcrmApiRequest $request)
    {
        $pipeline = $this->pipeline;

        return $pipeline($request);
    }

    /**
     * @param callable $action
     *
     * @return $this
     */
    public function setAction(callable $action)
    {
        $this->action = $action;

        return $this;
    }

    /**
     * @param array $middlewares
     *
     * @return $this
     */
    public function setMiddlewares(array $middlewares)
    {
        $this->middlewares = $middlewares;

        return $this;
    }

    public function build()
    {
        $this->pipeline =
            array_reduce(
                array_reverse($this->middlewares),
                $this->buildStack(),
                $this->action
            );
    }

    /**
     * @return callable
     */
    private function buildStack()
    {
        return function ($stack, $middlewareClass) {
            return function ($request) use ($stack, $middlewareClass) {
                $middleware = new $middlewareClass();

                return $middleware($request, $stack);
            };
        };
    }
}