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<?php declare(strict_types=1); |
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namespace WyriHaximus\React\Http\Middleware; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use React\Http\Io\HttpBodyStream; |
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use React\Promise\PromiseInterface; |
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use WyriHaximus\HtmlCompress\Factory; |
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use WyriHaximus\HtmlCompress\Parser; |
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use function React\Promise\resolve; |
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use function RingCentral\Psr7\stream_for; |
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final class HtmlCompressMiddleware |
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{ |
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const MIME_TYPES = [ |
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'text/html', |
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'text/xhtml', |
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]; |
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/** |
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* @var Parser |
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*/ |
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private $compressor; |
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/** |
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* @param Parser $compressor |
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*/ |
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public function __construct(Parser $compressor = null) |
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{ |
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if ($compressor === null) { |
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$compressor = Factory::constructFastest(); |
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} |
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$this->compressor = $compressor; |
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} |
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public function __invoke(ServerRequestInterface $request, callable $next) |
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{ |
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$response = $next($request); |
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if (!($response instanceof PromiseInterface)) { |
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return resolve($this->handleResponse($response)); |
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} |
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return $response->then(function (ResponseInterface $response) { |
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return $this->handleResponse($response); |
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}); |
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} |
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private function handleResponse(ResponseInterface $response) |
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{ |
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if ($response->getBody() instanceof HttpBodyStream) { |
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return $response; |
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} |
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if (!$response->hasHeader('content-type')) { |
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return $response; |
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} |
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list($contentType) = explode(';', $response->getHeaderLine('content-type')); |
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if (!in_array($contentType, self::MIME_TYPES, true)) { |
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return $response; |
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} |
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$body = (string)$response->getBody(); |
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$compressedBody = $this->compressor->compress($body); |
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return $response->withBody(stream_for($compressedBody))->withHeader('Content-Length', strlen($compressedBody)); |
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} |
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} |
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WyriHaximus /
reactphp-http-middleware-html-compress
