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<?php |
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namespace Equip\Handler; |
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use Equip\Action; |
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use Equip\Adr\DomainInterface; |
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use Equip\Adr\InputInterface; |
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use Equip\Adr\PayloadInterface; |
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use Equip\Adr\ResponderInterface; |
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use Equip\Resolver\ResolverTrait; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Relay\ResolverInterface; |
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class ActionHandler |
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{ |
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use ResolverTrait; |
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const ACTION_ATTRIBUTE = 'equip/adr:action'; |
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/** |
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* @param ResolverInterface $resolver |
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*/ |
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public function __construct(ResolverInterface $resolver) |
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{ |
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$this->resolver = $resolver; |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* @param ResponseInterface $response |
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* @param callable $next |
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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 $next |
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) { |
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$action = $request->getAttribute(self::ACTION_ATTRIBUTE); |
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$request = $request->withoutAttribute(self::ACTION_ATTRIBUTE); |
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$response = $this->handle($action, $request, $response); |
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return $next($request, $response); |
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} |
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/** |
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* Use the action collaborators to get a response. |
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* |
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* @param Action $action |
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* @param ServerRequestInterface $request |
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* @param ResponseInterface $response |
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* |
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* @return ResponseInterface |
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*/ |
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private function handle( |
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Action $action, |
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ServerRequestInterface $request, |
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ResponseInterface $response |
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) { |
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$domain = $this->resolve($action->getDomain()); |
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$input = $this->resolve($action->getInput()); |
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$responder = $this->resolve($action->getResponder()); |
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$payload = $this->payload($domain, $input, $request); |
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$response = $this->response($responder, $request, $response, $payload); |
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return $response; |
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} |
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/** |
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* Execute the domain to get a payload using input from the request. |
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* |
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* @param DomainInterface $domain |
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* @param InputInterface $input |
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* @param ServerRequestInterface $request |
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* |
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* @return PayloadInterface |
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*/ |
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private function payload( |
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DomainInterface $domain, |
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InputInterface $input, |
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ServerRequestInterface $request |
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) { |
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return $domain($input($request)); |
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} |
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/** |
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* Execute the responder to marshall the payload into the response. |
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* |
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* @param ResponderInterface $responder |
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* @param ServerRequestInterface $request |
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* @param ResponseInterface $response |
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* @param PayloadInterface $payload |
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* |
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* @return ResponseInterface |
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*/ |
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private function response( |
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ResponderInterface $responder, |
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ServerRequestInterface $request, |
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ResponseInterface $response, |
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PayloadInterface $payload |
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) { |
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return $responder($request, $response, $payload); |
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} |
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} |
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equip /
framework
