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<?php declare(strict_types=1); |
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namespace ApiClients\Foundation\Middleware; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use React\Promise\CancellablePromiseInterface; |
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use function React\Promise\resolve; |
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final class MiddlewareRunner |
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{ |
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/** |
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* @var array |
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*/ |
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private $options; |
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/** |
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* @var MiddlewareInterface[] |
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*/ |
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private $middlewares; |
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/** |
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* MiddlewareRunner constructor. |
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* @param array $options |
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* @param MiddlewareInterface[] $middlewares |
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*/ |
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public function __construct(array $options, MiddlewareInterface ...$middlewares) |
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{ |
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$this->options = $options; |
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$this->middlewares = $this->orderMiddlewares(...$middlewares); |
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} |
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/** |
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* Sort the middlewares by priority |
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* |
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* @param MiddlewareInterface[] $middlewares |
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* @return array |
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*/ |
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protected function orderMiddlewares(MiddlewareInterface ...$middlewares): array |
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{ |
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usort($middlewares, function (MiddlewareInterface $left, MiddlewareInterface $right) { |
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return $right->priority() <=> $left->priority(); |
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}); |
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return $middlewares; |
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} |
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/** |
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* @param RequestInterface $request |
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* @return CancellablePromiseInterface |
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*/ |
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public function pre( |
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RequestInterface $request |
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): CancellablePromiseInterface { |
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$promise = resolve($request); |
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foreach ($this->middlewares as $middleware) { |
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$requestMiddleware = $middleware; |
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$promise = $promise->then(function (RequestInterface $request) use ($requestMiddleware) { |
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return $requestMiddleware->pre($request, $this->options); |
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}); |
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} |
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return $promise; |
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} |
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/** |
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* @param ResponseInterface $response |
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* @return CancellablePromiseInterface |
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*/ |
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public function post( |
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ResponseInterface $response |
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): CancellablePromiseInterface { |
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$promise = resolve($response); |
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$this->middlewares = array_reverse($this->middlewares); |
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foreach ($this->middlewares as $middleware) { |
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$responseMiddleware = $middleware; |
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$promise = $promise->then(function (ResponseInterface $response) use ($responseMiddleware) { |
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return $responseMiddleware->post($response, $this->options); |
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}); |
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} |
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return $promise; |
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} |
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} |
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php-api-clients /
middleware
