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<?php |
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declare(strict_types=1); |
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namespace Northwoods\Broker; |
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use Psr\Container\ContainerInterface as Container; |
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use Psr\Http\Message\ResponseInterface as Response; |
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use Psr\Http\Message\ServerRequestInterface as Request; |
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use Psr\Http\Server\MiddlewareInterface as Middleware; |
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use Psr\Http\Server\RequestHandlerInterface as Handler; |
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class Broker implements Middleware, MiddlewareResolver |
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{ |
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/** @var Container|null */ |
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private $container; |
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/** @var array */ |
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private $middleware = []; |
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public function __construct(Container $container = null) |
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{ |
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$this->container = $container; |
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} |
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public function handle(Request $request, callable $default): Response |
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{ |
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$handler = new CallableRequestHandler($default); |
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return $this->process($request, $handler); |
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} |
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public function process(Request $request, Handler $handler): Response |
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{ |
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$handler = new RequestHandler($this->middleware, $handler, $this); |
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return $handler->handle($request); |
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} |
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/** |
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* @param array|string|Middleware $middleware |
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*/ |
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public function always($middleware): Broker |
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{ |
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return $this->when($this->alwaysTrue(), $middleware); |
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} |
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/** |
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* @param array|string|Middleware $middleware |
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*/ |
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public function when(callable $condition, $middleware): Broker |
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{ |
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if (!is_array($middleware)) { |
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$middleware = [$middleware]; |
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} |
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foreach ($middleware as $mw) { |
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$this->middleware[] = [$condition, $mw]; |
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} |
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return $this; |
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} |
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public function paths(array $paths): Broker |
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{ |
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$this->middleware[] = [ |
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$this->alwaysTrue(), |
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new PathDispatcher($paths, $this) |
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]; |
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return $this; |
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} |
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public function resolve($middleware): Middleware |
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{ |
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if ($middleware instanceof Middleware) { |
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return $middleware; |
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} |
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return $this->container->get($middleware); |
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} |
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private function alwaysTrue(): callable |
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{ |
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return static function () { |
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return true; |
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}; |
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} |
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} |
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northwoods /
broker
