Error.php

<?php
/**
 * This file implements a HTTP error, a simple wrapper which provide
 * a html response using smarthy templates. It rely on the Diactoros implementation
 * of the Response object to provide the reason phrase according to the status code.
 *
 * PHP Version 7
 *
 * @category PSR7
 * @package  Http
 * @author   Xavier Lecours Boucher <xavier.lecoursboucher@mcgill.ca>
 * @license  http://www.gnu.org/licenses/gpl-3.0.txt GPLv3
 * @link     https://www.github.com/aces/Loris/
 *
 * @see https://www.php-fig.org/psr/psr-7/
 */
namespace LORIS\Http;
use \Zend\Diactoros\Response\HtmlResponse;
use \Psr\Http\Message\ServerRequestInterface;

/**
 * A html representation of a http error
 *
 * @category PSR7
 * @package  Http
 * @author   Xavier Lecours Boucher <xavier.lecoursboucher@mcgill.ca>
 * @license  http://www.gnu.org/licenses/gpl-3.0.txt GPLv3
 * @link     https://www.github.com/aces/Loris/
 */
class Error extends HtmlResponse
{
    /**
     * Takes the status code and and use the Zend\Response constructor to provide
     * the approcriate reason phrase. It also add the appropriate body using
     * smarty templates based on status code.
     *
     * @param ServerRequestInterface $request this HTTP request.
     * @param int                    $status  The HTTP status code to use.
     * @param string                 $message A value to pass to smarty template
     */
    public function __construct(
        ServerRequestInterface $request,
        int $status,
        string $message = ''
    ) {

        $uri     = $request->getURI();
        $baseurl = $uri->getScheme() .'://'. $uri->getAuthority();

        $tpl_data = array(
                     'message' => $message,
                     'baseurl' => $baseurl,
                    );

        $template_file = (string) $status . '.tpl';

        $body = (new \Smarty_neurodb())
            ->assign($tpl_data)
            ->fetch($template_file);

        parent::__construct(
            (new \LORIS\Http\StringStream($body)),
            $status,
            array()
        );
    }
}