Psr7Middlewares\Middleware\Gzip::__invoke()

Complexity

Conditions	4
Paths	5

Size

Total Lines	22
Code Lines	13

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next)
    {
        if (!self::hasAttribute($request, EncodingNegotiator::KEY)) {
            throw new RuntimeException('Gzip middleware needs EncodingNegotiator executed before');
        }

        $response = $next($request, $response);

        $resolver = $this->resolver ?: new Transformers\Encoder();
        $encoding = EncodingNegotiator::getEncoding($request);
        $transformer = $resolver->resolve($encoding);

        if ($transformer) {
            $body = $response->getBody();
            
            return $response
                ->withHeader('Content-Encoding', $encoding)
                ->withBody($transformer($body, self::createStream($body)));
        }

        return $response;
    }
}