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<?php |
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namespace Thruster\Component\HttpMiddleware; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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/** |
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* Class Middlewares |
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* |
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* @package Thruster\Component\HttpMiddleware |
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* @author Aurimas Niekis <[email protected]> |
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*/ |
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class Middlewares |
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{ |
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/** |
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* @var callable[] |
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*/ |
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protected $middlewares; |
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public function __construct(array $middlewares = []) |
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{ |
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$this->middlewares = []; |
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foreach ($middlewares as $middleware) { |
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$this->add($middleware); |
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} |
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} |
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/** |
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* @return callable[] |
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*/ |
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public function all() : array |
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{ |
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return $this->middlewares; |
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} |
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/** |
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* @param callable $middleware |
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* |
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* @return Middlewares |
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*/ |
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public function add(callable $middleware) : self |
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{ |
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$this->middlewares[] = $middleware; |
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return $this; |
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} |
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/** |
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* @param callable $middleware |
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* |
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* @return bool |
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*/ |
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public function has(callable $middleware) : bool |
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{ |
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return false !== array_search($middleware, $this->middlewares, true); |
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} |
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/** |
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* @param callable $middleware |
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* |
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* @return Middlewares |
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*/ |
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public function remove(callable $middleware) : self |
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{ |
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$key = array_search($middleware, $this->middlewares, true); |
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if (false === $key) { |
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return $this; |
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} |
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unset($this->middlewares[$key]); |
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return $this; |
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} |
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public function __invoke( |
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ServerRequestInterface $request, |
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ResponseInterface $response, |
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callable $next = null |
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) : ResponseInterface |
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{ |
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$dispatcher = new class($this->middlewares) |
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{ |
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/** |
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* @var callable[] |
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*/ |
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protected $middlewares; |
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public function __construct($middlewares) |
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{ |
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$this->middlewares = $middlewares; |
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} |
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public function __invoke( |
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ServerRequestInterface $request, |
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ResponseInterface $response, |
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callable $next = null |
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) : ResponseInterface { |
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/** @var callable $middleware */ |
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$middleware = array_shift($this->middlewares); |
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$skip = function (ServerRequestInterface $request, ResponseInterface $response) { |
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return $response; |
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}; |
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if (count($this->middlewares) < 1) { |
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if (null === $next) { |
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$callback = $skip; |
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} else { |
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$callback = function ( |
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ServerRequestInterface $request, |
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ResponseInterface $response |
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) use ( |
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$next, |
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$skip |
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) { |
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return $next($request, $response, $skip); |
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}; |
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if (null === $middleware) { |
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return $callback($request, $response, $callback); |
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} |
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} |
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} else { |
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$callback = function ( |
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ServerRequestInterface $request, |
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ResponseInterface $response |
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) use ( |
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$next |
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) { |
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return $this->__invoke($request, $response, $next); |
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}; |
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} |
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if (null !== $middleware) { |
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$response = $middleware( |
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$request, |
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$response, |
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$callback |
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); |
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} |
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return $response; |
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} |
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}; |
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return $dispatcher($request, $response, $next); |
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} |
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} |
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ThrusterIO /
http-middleware
