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<?php |
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/** |
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* @author Vermeulen Maxime <[email protected]> |
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* @version 2.0 |
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*/ |
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namespace BfwApi; |
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use \Exception; |
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use \BFW\Helpers\Secure; |
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/** |
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* Abstract class for Rest API user class |
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* @package bfw-api |
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*/ |
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abstract class Rest |
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{ |
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/** |
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* @var mixed $datas Datas receive by request |
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*/ |
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protected $datas; |
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/** |
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* @var string $responseFormat (json|xml) The response format to use |
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*/ |
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protected $responseFormat; |
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/** |
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* Constructor |
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* Get datas from the request |
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*/ |
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public function __construct() |
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{ |
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$this->obtainsDatasFromRequest(); |
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$this->obtainResponseFormat(); |
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} |
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/** |
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* Method called for GET request |
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* |
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* @return void |
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*/ |
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public function getRequest() |
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{ |
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//Not Implemented |
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http_response_code(501); |
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} |
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/** |
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* Method called for POST request |
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* |
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* @return void |
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*/ |
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public function postRequest() |
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{ |
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//Not Implemented |
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http_response_code(501); |
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} |
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/** |
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* Method called for PUT request |
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* |
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* @return void |
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*/ |
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public function putRequest() |
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{ |
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//Not Implemented |
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http_response_code(501); |
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} |
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/** |
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* Method called for DELETE request |
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* |
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* @return void |
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*/ |
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public function deleteRequest() |
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{ |
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//Not Implemented |
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http_response_code(501); |
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} |
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/** |
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* Get datas receive from the request |
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* |
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* @link http://stackoverflow.com/questions/8945879/how-to-get-body-of-a-post-in-php |
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* |
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* @return void |
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*/ |
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protected function obtainsDatasFromRequest() |
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{ |
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if (\BFW\Request::getServerVar('CONTENT-TYPE') === 'application/json') |
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{ |
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$requestDatas = file_get_contents('php://input'); |
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$this->datas = Secure::securise( |
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json_decode($requestDatas, true), |
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'string', |
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true |
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); |
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} else { |
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$this->datas = Secure::securise($_POST, 'string', true); |
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} |
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} |
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/** |
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* Get the response format to use from header "Accept" or |
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* the get parameter "format" |
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* |
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* The get parameter have the priority on the "Accept" header |
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* |
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* @return void |
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*/ |
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protected function obtainResponseFormat() |
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{ |
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$formatFromHeader = $this->obtainResponseFormatFromAcceptHeader(); |
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$formatFromGet = $this->obtainResponseFormatFromGetParameter(); |
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if ($formatFromGet !== null) { |
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$this->responseFormat = $formatFromGet; |
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} elseif ($formatFromHeader !== null) { |
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$this->responseFormat = $formatFromHeader; |
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} else { |
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http_response_code(406); |
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} |
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} |
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/** |
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* Get the format to use from the "Accept" http header |
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* |
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* Header format : text/html,application/xhtml+xml,application/xml;q=0.9 |
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* |
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* @return null|string |
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*/ |
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protected function obtainResponseFormatFromAcceptHeader() |
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{ |
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$acceptHeader = \BFW\Request::getServerVar('HTTP_ACCEPT'); |
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if ($acceptHeader === '') { |
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return null; |
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} |
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$availableHeader = [ |
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'application/xml' => 'xml', |
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'application/json' => 'json' |
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]; |
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$allAcceptedFormat = explode(',', $acceptHeader); |
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foreach ($allAcceptedFormat as $mimeTypeWithPreference) { |
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$cutMimeAndPreference = explode(';', $mimeTypeWithPreference); |
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$mimeType = $cutMimeAndPreference[0]; |
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if (isset($availableHeader[$mimeType])) { |
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return $availableHeader[$mimeType]; |
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} |
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} |
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return null; |
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} |
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/** |
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* Get the response format to use from the get paramter "format" |
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* |
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* @return string|null |
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*/ |
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protected function obtainResponseFormatFromGetParameter() |
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{ |
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try { |
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$format = Secure::getSecurisedGetKey('format', 'text'); |
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if ($format !== 'xml' && $format !== 'json') { |
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return null; |
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} |
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return $format; |
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} catch (Exception $ex) { |
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return null; |
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} |
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} |
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/** |
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* Send a response for the api request with the correct format |
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* |
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* @param mixed $response Datas to send |
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* |
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* @return void |
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*/ |
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protected function sendResponse(&$response) |
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{ |
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if ($this->responseFormat === 'json') { |
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$this->sendJsonResponse($response); |
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} elseif ($this->responseFormat === 'xml') { |
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$this->sendXmlResponse($response); |
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} |
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} |
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/** |
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* Send the response for json format |
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* |
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* @param mixed $response Datas to send |
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* |
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* @return void |
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*/ |
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protected function sendJsonResponse(&$response) |
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{ |
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header('Content-Type: application/json'); |
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echo json_encode($response); |
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} |
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/** |
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* Send the response for xml format |
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* |
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* @param mixed $response Datas to send |
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* |
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* @return void |
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*/ |
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protected function sendXmlResponse(&$response) |
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{ |
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header('Content-Type: application/xml'); |
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$phpToXml = new \bultonFr\PhpToXml\PhpToXml; |
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echo $phpToXml->convert($response); |
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} |
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} |
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