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<?php |
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declare(strict_types=1); |
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namespace hiapi\Core\Http\Psr15\Middleware; |
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use Doctrine\Common\Collections\ArrayCollection; |
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use hiapi\Core\commands\CommandFactory; |
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use hiapi\Core\Endpoint\EndpointProcessor; |
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use hiapi\Core\Endpoint\EndpointRepository; |
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use hiapi\Core\Http\Psr7\Response\FatResponse; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use yii\base\Arrayable; |
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/** |
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* Complete endpoint execution: |
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* - resolve endpoint with EndpointRepository |
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* - create command with CommandFactory |
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* - run endpoint with EndpointProcessor |
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* The middleware can be bound to single command with `endpointName`. |
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*/ |
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class EndpointMiddleware implements MiddlewareInterface |
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{ |
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private string $endpointName; |
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private CommandFactory $commandFactory; |
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private EndpointRepository $endpointRepository; |
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private EndpointProcessor $endpointProcessor; |
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public function __construct( |
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string $enpointName = '', |
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CommandFactory $commandFactory, |
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EndpointRepository $endpointRepository, |
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EndpointProcessor $endpointProcessor |
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) { |
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$this->endpointName = $enpointName; |
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$this->commandFactory = $commandFactory; |
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$this->endpointRepository = $endpointRepository; |
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$this->endpointProcessor = $endpointProcessor; |
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} |
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public static function for(string $name): \Closure |
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{ |
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return function ( |
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ServerRequestInterface $request, RequestHandlerInterface $handler, |
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CommandFactory $commandFactory, |
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EndpointRepository $endpointRepository, |
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EndpointProcessor $endpointProcessor |
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) use ($name) { |
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$middleware = new self($name, $commandFactory, $endpointRepository, $endpointProcessor); |
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return $middleware->process($request, $handler); |
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}; |
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} |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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$endpoint = $this->endpointRepository->getByName($this->getName($request)); |
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$command = $this->commandFactory->createByEndpoint($endpoint, $request); |
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$result = $this->endpointProcessor->__invoke($command, $endpoint); |
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if ($result instanceof ResponseInterface) { |
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return $result; |
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} |
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return FatResponse::create($this->transformResult($result), $request); |
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} |
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private function getName(ServerRequestInterface $request): string |
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{ |
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return $this->endpointName ?: trim($request->getUri()->getPath(), '/'); |
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} |
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/** |
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* TODO: Re-implement as a ResourceTransformer, that can serialize Result to an Http\Response |
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* It should be useful to serialize file to StreamResponse, or search result to Reponse with |
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* pagination headers. |
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* |
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* @param array|ArrayCollection|object|mixed $result |
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* @return array|string|null|boolean |
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*/ |
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private function transformResult($result) |
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{ |
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if ($result instanceof ArrayCollection) { |
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return array_map(function ($item) { |
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return $this->transformResult($item); |
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}, $result->toArray()); |
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} |
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if ($result instanceof Arrayable) { |
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return $result->toArray(); |
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} |
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return $result; |
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} |
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} |
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