SessionMiddleware.php

<?php
declare(strict_types=1);
/**
 * Omatamix Session
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2021 Nicholas English
 *
 * 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.
 */

namespace Omatamix\Session;

use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\ResponseInterface;

class SessionMiddleware
{
    /**
     * The involkable session middleware.
     *
     * @param \Psr\Http\Message\ServerRequestInterface $request  PSR7 request.
     * @param \Psr\Http\Message\ResponseInterface      $response PSR7 response.
     * @param callable                                 $next     Next middleware.
     *
     * @return \Psr\Http\Message\ResponseInterface Returns an HTTP response.
     */
    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next)
    {
        if (!StaticSessionManager::exists()) {
            StaticSessionManager::start();
        }
        return call_user_func($next, $request, $response);
    }
}