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<?php |
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/** |
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* This file is part of the BEAR.Resource package. |
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* |
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* @license http://opensource.org/licenses/MIT MIT |
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*/ |
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namespace BEAR\Resource; |
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use BEAR\Resource\Annotation\Embed; |
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use BEAR\Resource\Exception\BadRequestException; |
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use BEAR\Resource\Exception\EmbedException; |
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use Doctrine\Common\Annotations\Reader; |
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use Ray\Aop\MethodInterceptor; |
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use Ray\Aop\MethodInvocation; |
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final class EmbedInterceptor implements MethodInterceptor |
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{ |
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/** |
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* @var \BEAR\Resource\ResourceInterface |
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*/ |
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private $resource; |
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/** |
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* @var Reader |
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*/ |
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private $reader; |
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/** |
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* @param ResourceInterface $resource |
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* @param Reader $reader |
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*/ |
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public function __construct(ResourceInterface $resource, Reader $reader) |
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{ |
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$this->resource = clone $resource; |
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$this->reader = $reader; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws \BEAR\Resource\Exception\EmbedException |
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*/ |
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public function invoke(MethodInvocation $invocation) |
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{ |
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$resourceObject = $invocation->getThis(); |
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if (! $resourceObject instanceof ResourceObject) { |
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throw new EmbedException(get_class($resourceObject)); |
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} |
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$method = $invocation->getMethod(); |
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$query = $this->getArgsByInvocation($invocation); |
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$embeds = $this->reader->getMethodAnnotations($method); |
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// embedding resource |
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$this->embedResource($embeds, $resourceObject, $query); |
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// request (method can modify embedded resource) |
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$result = $invocation->proceed(); |
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return $result; |
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} |
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/** |
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* @param Embed[] $embeds |
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* @param ResourceObject $resourceObject |
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* @param array $query |
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* |
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* @throws EmbedException |
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*/ |
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private function embedResource(array $embeds, ResourceObject $resourceObject, array $query) |
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{ |
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foreach ($embeds as $embed) { |
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/* @var $embed Embed */ |
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if (! $embed instanceof Embed) { |
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continue; |
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} |
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try { |
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$templateUri = $this->getFullUri($embed->src, $resourceObject); |
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$uri = uri_template($templateUri, $query); |
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$resourceObject->body[$embed->rel] = clone $this->resource->get->uri($uri); |
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} catch (BadRequestException $e) { |
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// wrap ResourceNotFound or Uri exception |
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throw new EmbedException($embed->src, 500, $e); |
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} |
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} |
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} |
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private function getFullUri(string $uri, ResourceObject $resourceObject) : string |
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{ |
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if ($uri[0] === '/') { |
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$uri = "{$resourceObject->uri->scheme}://{$resourceObject->uri->host}" . $uri; |
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} |
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return $uri; |
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} |
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private function getArgsByInvocation(MethodInvocation $invocation) : array |
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{ |
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$args = $invocation->getArguments()->getArrayCopy(); |
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$params = $invocation->getMethod()->getParameters(); |
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$namedParameters = []; |
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foreach ($params as $param) { |
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$namedParameters[$param->name] = array_shift($args); |
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} |
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return $namedParameters; |
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} |
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} |
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bearsunday /
BEAR.Resource
