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<?php |
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namespace Staticus\Resources\Middlewares; |
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use Staticus\Diactoros\Response\FileContentResponse; |
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use Staticus\Diactoros\Response\FileUploadedResponse; |
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use Staticus\Diactoros\Response\ResourceDoResponse; |
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use Staticus\Middlewares\MiddlewareAbstract; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Staticus\Resources\ResourceDOInterface; |
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use Zend\Diactoros\Response\EmptyResponse; |
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use Zend\Diactoros\Response\JsonResponse; |
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abstract class ResourceResponseMiddlewareAbstract extends MiddlewareAbstract |
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{ |
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/** |
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* @var ResourceDOInterface |
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*/ |
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protected $resourceDO; |
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public function __construct(ResourceDOInterface $resourceDO) |
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{ |
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$this->resourceDO = $resourceDO; |
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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 $next = null |
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) |
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{ |
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parent::__invoke($request, $response, $next); |
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if ($this->isSupportedResponse($response)) { |
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$uri = $this->getUri($this->resourceDO); |
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$data = [ |
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'resource' => $this->resourceDO->toArray(), |
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'uri' => $uri, |
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]; |
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if (!empty($data)) { |
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$headers = $response->getHeaders(); |
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$headers['Content-Type'] = 'application/json'; |
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// here is relative link without host url |
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$headers['Link'] = '<' . rawurlencode($uri) . '>; rel="canonical"'; |
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$response = $this->getResponseObject($data, $response->getStatusCode(), $headers); |
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} |
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} |
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return $next($request, $response); |
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} |
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/** |
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* @return ResponseInterface |
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*/ |
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protected function getResponseObject($data, $status, array $headers) |
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{ |
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$return = new JsonResponse($data, $status, $headers); |
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return $return; |
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} |
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protected function getUri(ResourceDOInterface $resourceDO) |
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{ |
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$uri = $resourceDO->getName() . '.' . $resourceDO->getType(); |
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$query = []; |
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if (ResourceDOInterface::DEFAULT_VARIANT !== $resourceDO->getVariant()) { |
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$query['var'] = $resourceDO->getVariant(); |
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} |
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if (ResourceDOInterface::DEFAULT_NAME_ALTERNATIVE !== $resourceDO->getNameAlternative()) { |
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$query['alt'] = $resourceDO->getNameAlternative(); |
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} |
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if (ResourceDOInterface::DEFAULT_VERSION !== $resourceDO->getVersion()) { |
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$query['v'] = $resourceDO->getVersion(); |
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} |
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$query = http_build_query($query); |
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if ($query) { |
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$uri .= '?' . $query; |
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} |
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return $uri; |
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} |
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/** |
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* @param ResponseInterface $response |
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* @return bool |
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*/ |
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protected function isSupportedResponse(ResponseInterface $response) |
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{ |
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return $response instanceof EmptyResponse |
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|| $response instanceof FileContentResponse |
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|| $response instanceof FileUploadedResponse |
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|| $response instanceof ResourceDoResponse; |
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} |
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} |
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KIVagant /
staticus-core
