Code Coverage for /var/www/src/Middleware/ETagHandler.php

1	<?php
2
3	declare(strict_types=1);
4
5	namespace Engelsystem\Middleware;
6
7	use Illuminate\Support\Str;
8	use Nyholm\Psr7\Stream;
9	use Psr\Http\Message\ResponseInterface;
10	use Psr\Http\Message\ServerRequestInterface;
11	use Psr\Http\Server\MiddlewareInterface;
12	use Psr\Http\Server\RequestHandlerInterface;
13	use Symfony\Component\HttpFoundation\Response;
14
15	class ETagHandler implements MiddlewareInterface
16	{
17	/**
18	* Compare the response ETag to a requested If-None-Match header and send a 304 "not modified" if they match
19	*/
20	public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
21	{
22	$response = $handler->handle($request);
23
24	$etagMatch = $request->getHeader('If-None-Match');
25	$etag = $response->getHeader('ETag');
26
27	if (
28	!$etagMatch
29	\|\| !$etag
30	\|\| !Str::contains(implode(', ', $etagMatch), trim($etag[0], '"'))
31	) {
32	return $response;
33	}
34
35	return $response
36	->withStatus(Response::HTTP_NOT_MODIFIED)
37	->withBody(Stream::create());
38	}
39	}