Chinstrap\Core\Http\Middleware\HttpCacheMiddleware

Complexity

Total Complexity

5

Size/Duplication

Total Lines	30
Duplicated Lines	0 %

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
A	process()	0	20	5

<?php

declare(strict_types=1);

namespace Chinstrap\Core\Http\Middleware;

use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;

final class HttpCacheMiddleware implements MiddlewareInterface
{
    /**
     * @var array
     */
    private array $cacheableStatus = [
                                200,
                                304,
                               ];

    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
    {
        $response = $handler->handle($request);
        $env = $request->getServerParams();
        if ($env['APP_ENV'] === 'development') {
            return $response;
        }

        if ($request->getMethod() !== 'GET' || !in_array($response->getStatusCode(), $this->cacheableStatus)) {
            return $response;
        }

        $maxLifetime = isset($env['CACHE_TIME']) ? (int)$env['CACHE_TIME'] : 3600; // cache for 1 hour

        return $response->withAddedHeader(
            'Cache-Control',
            "public, max-age=$maxLifetime"
        )->withAddedHeader(
            'Expires',
            gmdate("D, d M Y H:i:s", time() + $maxLifetime) . " GMT"
        );
    }
}