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<?php |
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namespace Equip\Dispatch; |
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use Interop\Http\Middleware\DelegateInterface; |
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use Interop\Http\Middleware\ServerMiddlewareInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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class Stack implements ServerMiddlewareInterface |
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{ |
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/** |
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* @var callable |
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*/ |
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private $default; |
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/** |
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* @var array |
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*/ |
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private $middleware = []; |
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/** |
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* @param array $middleware |
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*/ |
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public function __construct(...$middleware) |
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{ |
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array_map([$this, 'append'], $middleware); |
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} |
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/** |
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* Add a middleware to the end of the stack. |
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* |
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* @param ServerMiddlewareInterface $middleware |
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* |
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* @return void |
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*/ |
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public function append(ServerMiddlewareInterface $middleware) |
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{ |
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array_push($this->middleware, $middleware); |
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} |
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/** |
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* Add a middleware to the beginning of the stack. |
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* |
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* @param ServerMiddlewareInterface $middleware |
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* |
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* @return void |
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*/ |
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public function prepend(ServerMiddlewareInterface $middleware) |
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{ |
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array_unshift($this->middleware, $middleware); |
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} |
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/** |
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* Process an incoming server request and return a response, optionally delegating |
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* to the next middleware component to create the response. |
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* |
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* @param ServerRequestInterface $request |
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* @param DelegateInterface $nextContanierDelegate |
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* |
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* @return ResponseInterface |
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*/ |
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public function process(ServerRequestInterface $request, DelegateInterface $nextContanierDelegate) |
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{ |
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$delegate = new Delegate($this->middleware, new DelegateToCallableAdapter($nextContanierDelegate)); |
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return $delegate->process($request); |
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} |
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/** |
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* Dispatch the middleware stack. |
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* |
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* @param ServerRequestInterface $request |
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* @param callable $default to call when no middleware is available |
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* |
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* @return ResponseInterface |
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*/ |
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public function dispatch(ServerRequestInterface $request, callable $default) |
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{ |
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$delegate = new Delegate($this->middleware, $default); |
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return $delegate->process($request); |
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} |
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} |
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equip /
dispatch
