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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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/** |
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* Class for API system |
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* @package bfw-api |
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*/ |
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class BfwApi implements \SplObserver |
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{ |
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/** |
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* @var \BFW\Module $module The bfw module instance for this module |
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*/ |
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protected $module; |
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/** |
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* @var \BFW\Config $config The bfw config instance for this module |
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*/ |
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protected $config; |
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/** |
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* @var \FastRoute\Dispatcher $dispatcher FastRoute dispatcher |
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*/ |
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protected $dispatcher; |
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/** |
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* @var boolean $routeFindByOther If the route for current request has been |
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* found by an other module. So we not need to search. |
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*/ |
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protected $routeFindByOther; |
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/** |
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* Constructor |
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* |
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* @param \BFW\Module $module |
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*/ |
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public function __construct(\BFW\Module $module) |
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{ |
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$this->routeFindByOther = false; |
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$this->module = $module; |
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$this->config = $module->getConfig(); |
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$this->dispatcher = \FastRoute\simpleDispatcher([$this, 'addRoutesToCollector']); |
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} |
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/** |
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* Call by dispatcher; Add route in config to fastRoute router |
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* |
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* @param \FastRoute\RouteCollector $router FastRoute router |
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* |
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* @return void |
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*/ |
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public function addRoutesToCollector(\FastRoute\RouteCollector $router) |
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{ |
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$urlPrefix = $this->config->getConfig('urlPrefix', 'config.php'); |
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$routes = $this->config->getConfig('routes', 'routes.php'); |
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foreach ($routes as $slug => $infos) { |
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$slug = trim($urlPrefix.$slug); |
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//Défault method |
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$method = ['GET', 'POST', 'PUT', 'DELETE']; |
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//If method is declared for the route |
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if (isset($infos['httpMethod'])) { |
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//Get the method ans remove it from httpMethod array |
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$method = $infos['httpMethod']; |
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unset($infos['httpMethod']); |
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} |
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$router->addRoute($method, $slug, $infos); |
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} |
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} |
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/** |
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* Observer update method |
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* Call run method on action "bfw_run_finish" and route has |
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* not been already found. |
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* Update attribute routeFindByOther on action "request_route_find". |
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* |
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* @param \SplSubject $subject |
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* |
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* @return void |
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*/ |
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public function update(\SplSubject $subject) |
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{ |
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if ( |
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$subject->getAction() === 'bfw_run_finish' |
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&& $this->routeFindByOther === false |
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) { |
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$this->run(); |
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} |
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if ($subject->getAction() === 'request_route_find') { |
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$this->routeFindByOther = true; |
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} |
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} |
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/** |
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* Run when the notify "bfw_run_finish" is emit |
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* Check if we are in an API route |
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* If it's an API route, |
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* * Get the class name to use for this route |
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* * Call the method corresponding to request in the class declared |
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* |
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* @return void |
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*/ |
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public function run() |
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{ |
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$className = $this->obtainClassNameForCurrentRoute(); |
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//Get current request informations |
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$bfwRequest = \BFW\Request::getInstance(); |
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$method = strtolower($bfwRequest->getMethod()); |
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if (!class_exists($className)) { |
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throw new \Exception('Class '.$className.' not found.'); |
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} |
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if (!method_exists($className, $method.'Request')) { |
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throw new \Exception( |
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'Method '.$method.'Request not found in class '.$className.'.' |
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); |
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} |
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$useRest = $this->config->getConfig('useRest', 'config.php'); |
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$useGraphQL = $this->config->getConfig('useGraphQL', 'config.php'); |
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if ($useRest === true) { |
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return $this->runRest($className, $method); |
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} elseif ($useGraphQL === true) { |
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return $this->runGraphQL(); |
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} |
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throw new Exception( |
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'Please choose between REST and GraphQL in config file.' |
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); |
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} |
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protected function runRest($className, $method) |
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{ |
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$api = new $className; |
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$api->{$method.'Request'}(); |
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} |
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protected function runGraphQL() |
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{ |
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//Not implement yet |
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http_response_code(501); |
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} |
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/** |
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* Obtain the classname to use for current route from fastRoute dispatcher |
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* |
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* @return string|void The classname or nothing if error |
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* |
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* @throw \Exception If no "className" is define in config for the route. |
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*/ |
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protected function obtainClassNameForCurrentRoute() |
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{ |
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//Get current request informations |
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$bfwRequest = \BFW\Request::getInstance(); |
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$request = $bfwRequest->getRequest()->path; |
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$method = $bfwRequest->getMethod(); |
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//Get route information from dispatcher |
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$routeInfo = $this->dispatcher->dispatch($method, $request); |
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$routeStatus = $routeInfo[0]; |
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//Get and send request http status to the controller/router linker |
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$httpStatus = $this->checkStatus($routeStatus); |
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if ($httpStatus !== 200) { |
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http_response_code($httpStatus); |
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return; |
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} |
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global $_GET; |
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$_GET = array_merge($_GET, $routeInfo[2]); |
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if (!isset($routeInfo[1]['className'])) { |
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throw new Exception('className not define for uri '.$request); |
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} |
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http_response_code(200); |
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$this->sendNotifyRouteFindToOthers(); |
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return $routeInfo[1]['className']; |
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} |
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/** |
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* Get http status for response from dispatcher |
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* |
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* @param int $routeStatus : Route status send by dispatcher for request |
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* |
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* @return int |
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*/ |
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protected function checkStatus($routeStatus) |
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{ |
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$httpStatus = 200; |
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if ($routeStatus === \FastRoute\Dispatcher::METHOD_NOT_ALLOWED) { |
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$httpStatus = 405; |
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} elseif ($routeStatus === \FastRoute\Dispatcher::NOT_FOUND) { |
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$httpStatus = 404; |
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} |
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return $httpStatus; |
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} |
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/** |
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* Send to all observer of Application a notify who contains the message |
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* "request_route_find" to say the route for the current request has been |
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* found by us. |
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* |
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* @return void |
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*/ |
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protected function sendNotifyRouteFindToOthers() |
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{ |
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$app = \BFW\Application::getInstance(); |
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$app->notifyAction('request_route_find'); |
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} |
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} |
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