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<?php |
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namespace hiapi\middlewares; |
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use hiapi\commands\error\CommandError; |
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use League\Tactician\Middleware; |
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use Psr\Http\Message\ResponseInterface; |
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use Zend\Hydrator\HydratorInterface; |
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class LegacyResponderMiddleware implements Middleware |
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{ |
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/** |
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* @var ResponseInterface |
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*/ |
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private $response; |
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/** |
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* @var HydratorInterface |
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*/ |
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private $extractor; |
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public function __construct( |
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ResponseInterface $response, |
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HydratorInterface $extractor |
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) { |
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$this->response = $response; |
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$this->extractor = $extractor; |
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} |
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/** |
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* @param object $command |
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* @param callable $next |
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* |
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* @return mixed |
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*/ |
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public function execute($command, callable $next) |
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{ |
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$result = $next($command); |
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$data = $this->extract($result); |
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return $this->createResponseFor($data); |
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} |
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private function extract($result) |
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{ |
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if ($result instanceof CommandError) { |
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return ['_error' => $result->getException()->getMessage()]; |
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} |
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if (is_array($result)) { |
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return array_map(function ($item) { |
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return $this->extractOne($item); |
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}, $result); |
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} |
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return $this->extractOne($result); |
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} |
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private function extractOne($result) |
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{ |
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return is_object($result) ? $this->extractor->extract($result) : $result; |
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} |
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private function createResponseFor($data) |
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{ |
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$response = $this->response |
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->withStatus(200) |
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->withHeader("Content-Type", "application/json"); |
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if ($response->getBody()->isSeekable()) { |
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$response->getBody()->rewind(); |
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} |
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$response->getBody()->write(json_encode($data)); |
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return $response; |
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} |
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} |
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