oscarotero / psr7-middlewares

/**

 * Middleware to gzip encode the response body.

 */

class Gzip

{

    use Utils\ResolverTrait;

    /**

     * Execute the middleware.

     *

     * @param ServerRequestInterface $request

     * @param ResponseInterface      $response

     * @param callable               $next

     *

     * @return ResponseInterface

     */

    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next)

    {

        if (!Middleware::hasAttribute($request, EncodingNegotiator::KEY)) {

            throw new RuntimeException('Gzip middleware needs EncodingNegotiator executed before');

        }

        $resolver = $this->resolver ?: new Transformers\Encoder();

        $transformer = $resolver->resolve(EncodingNegotiator::getEncoding($request));

        if ($transformer) {

            $response = $transformer($response);

        }

        return $next($request, $response);

    }

}

use Psr7Middlewares\Transformers;

use RuntimeException;

class Minify

{

    use Utils\ResolverTrait;

    /**

     * Execute the middleware.

     *

     * @param ServerRequestInterface $request

     * @param ResponseInterface      $response

     * @param callable               $next

     *

     * @return ResponseInterface

     */

    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next)

    {

        if (!Middleware::hasAttribute($request, FormatNegotiator::KEY)) {

            throw new RuntimeException('Minify middleware needs FormatNegotiator executed before');

        }

        $resolver = $this->resolver ?: new Transformers\Minifier();

        $transformer = $resolver->resolve(FormatNegotiator::getFormat($request));

        if ($transformer) {

            $response = $transformer($response);

        }

        return $next($request, $response);

    }

}