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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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final class OptionProvider implements OptionProviderInterface |
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{ |
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/** |
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* Valid resource request methods |
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* |
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* @var array |
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*/ |
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const VALID_METHODS = ['onGet', 'onPost', 'onPut', 'onPatch', 'onDelete', 'onHead']; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function get(ResourceObject $ro) |
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{ |
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$options = $this->getOptions($ro); |
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$ro->headers['allow'] = (string) $options; |
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$ro->body = null; |
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return $ro; |
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} |
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/** |
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* Return available resource request method |
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* |
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* @param ResourceObject $resourceObject |
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* |
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* @return Options |
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*/ |
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private function getOptions(ResourceObject $resourceObject) |
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{ |
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$allows = $this->getAllows((new \ReflectionClass($resourceObject))->getMethods()); |
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$params = []; |
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foreach ($allows as $method) { |
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$params[] = $this->getParams($resourceObject, $method); |
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} |
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return new Options($allows, $params); |
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} |
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/** |
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* @param \ReflectionMethod[] $methods |
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* |
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* @return array |
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*/ |
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private function getAllows(array $methods) |
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{ |
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$allows = []; |
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foreach ($methods as $method) { |
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if (in_array($method->name, self::AVAILABLE_METHODS)) { |
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$allows[] = strtolower(substr($method->name, 2)); |
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} |
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} |
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return $allows; |
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} |
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/** |
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* @param ResourceObject $ro |
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* @param string $method |
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* |
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* @return string[] |
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*/ |
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private function getParams($ro, $method) |
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{ |
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$params = []; |
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$refMethod = new \ReflectionMethod($ro, 'on' . $method); |
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$parameters = $refMethod->getParameters(); |
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$paramArray = []; |
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foreach ($parameters as $parameter) { |
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$name = $parameter->name; |
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$param = $parameter->isOptional() ? "({$name})" : $name; |
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$paramArray[] = $param; |
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} |
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$key = "param-{$method}"; |
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$params[$key] = implode(',', $paramArray); |
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return $params; |
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} |
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} |
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bearsunday /
BEAR.Resource
