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<?php |
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namespace Psr7Middlewares\Middleware; |
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use Psr7Middlewares\Utils; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use DateTimeImmutable; |
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/** |
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* Middleware to send Expires header. |
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*/ |
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class Expires |
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{ |
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private $expiresDefault = '+1 month'; |
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private $expires = [ |
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'text/css' => '+1 year', |
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'application/atom+xml' => '+1 hour', |
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'application/rdf+xml' => '+1 hour', |
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'application/rss+xml' => '+1 hour', |
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'application/json' => '+0 seconds', |
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'application/ld+json' => '+0 seconds', |
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'application/schema+json' => '+0 seconds', |
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'application/vnd.geo+json' => '+0 seconds', |
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'application/xml' => '+0 seconds', |
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'text/xml' => '+0 seconds', |
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'image/vnd.microsoft.icon' => '+1 week', |
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'image/x-icon' => '+1 week', |
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'text/html' => '+0 seconds', |
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'application/javascript' => '+1 year', |
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'application/x-javascript' => '+1 year', |
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'text/javascript' => '+1 year', |
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'application/manifest+json' => '+1 week', |
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'application/x-web-app-manifest+json' => '+0 seconds', |
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'text/cache-manifest' => '+0 seconds', |
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'audio/ogg' => '+1 month', |
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'image/bmp' => '+1 month', |
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'image/gif' => '+1 month', |
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'image/jpeg' => '+1 month', |
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'image/png' => '+1 month', |
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'image/svg+xml' => '+1 month', |
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'image/webp' => '+1 month', |
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'video/mp4' => '+1 month', |
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'video/ogg' => '+1 month', |
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'video/webm' => '+1 month', |
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'application/vnd.ms-fontobject' => '+1 month', |
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'font/eot' => '+1 month', |
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'font/opentype' => '+1 month', |
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'application/x-font-ttf' => '+1 month', |
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'application/font-woff' => '+1 month', |
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'application/x-font-woff' => '+1 month', |
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'font/woff' => '+1 month', |
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'application/font-woff2' => '+1 month', |
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'text/x-cross-domain-policy' => '+1 week', |
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]; |
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/** |
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* Add a new expires header. |
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* |
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* @param string $mime |
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* @param string $expires |
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*/ |
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public function addExpires($mime, $expires) |
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{ |
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$this->expires[$mime] = $expires; |
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} |
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/** |
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* Execute the middleware. |
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* |
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* @param RequestInterface $request |
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* @param ResponseInterface $response |
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* @param callable $next |
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* |
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* @return ResponseInterface |
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*/ |
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public function __invoke(RequestInterface $request, ResponseInterface $response, callable $next) |
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{ |
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$response = $next($request, $response); |
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$cacheControl = $response->getHeaderLine('Cache-Control') ?: ''; |
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if (stripos($cacheControl, 'max-age') === false) { |
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$mime = Utils\Helpers::getMimeType($response); |
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$expires = new DateTimeImmutable(isset($this->expires[$mime]) ? $this->expires[$mime] : $this->expiresDefault); |
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$cacheControl .= ' max-age='.($expires->getTimestamp() - time()); |
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return $response |
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->withHeader('Cache-Control', trim($cacheControl)) |
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->withHeader('Expires', $expires->format('D, d M Y H:i:s').' GMT'); |
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} |
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return $response; |
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} |
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} |
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oscarotero /
psr7-middlewares
