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<?php |
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namespace CapMousse\ReactRestify\Routing; |
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use CapMousse\ReactRestify\Evenement\EventEmitter; |
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use CapMousse\ReactRestify\Http\Request; |
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use CapMousse\ReactRestify\Http\Response; |
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use CapMousse\ReactRestify\Traits\WaterfallTrait; |
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use CapMousse\ReactRestify\Container\Container; |
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class Router extends EventEmitter |
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{ |
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use WaterfallTrait; |
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/** |
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* The current routes list |
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* @var array |
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*/ |
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public $routes = []; |
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/** |
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* @var array |
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*/ |
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private $middlewares = []; |
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/** |
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* The current asked uri |
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* @var string|boolean |
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*/ |
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private $uri = false; |
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/** |
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* Create a new routing element |
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* |
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* @param array $routes a route array |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public function __construct($routes = []) |
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{ |
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if (!is_array($routes)) { |
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throw new \InvalidArgumentException("Routes must be an array"); |
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} |
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$this->addRoutes($routes); |
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} |
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/** |
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* Add routes |
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* |
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* @param array $routes a route array |
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* |
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* @throws \InvalidArgumentException |
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* @return Void |
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*/ |
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public function addRoutes($routes) |
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{ |
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if (!is_array($routes)) { |
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throw new \InvalidArgumentException("Routes must be an array"); |
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} |
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$routes = array_filter($routes, function ($route) { |
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return is_a('Route', $route); |
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}); |
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$this->routes = array_merge($this->routes, $routes); |
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} |
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/** |
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* Add a new route |
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* |
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* @param String $method type of route |
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* @param String $route uri to catch |
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* @param Callable $callback |
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*/ |
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public function addRoute($method, $route, $callback) |
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{ |
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return $this->routes[] = new Route(strtoupper($method), $route, $callback); |
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} |
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/** |
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* Create a new group of routes |
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* |
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* @param String $prefix prefix of thes routes |
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* |
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* @return \CapMousse\ReactRestify\Routing\Group |
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*/ |
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public function addGroup($prefix, $callback) |
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{ |
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$group = new Routes($this, $prefix, $callback); |
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return $group; |
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} |
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/** |
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* Add a middleware |
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* @param string|Callable $callback |
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*/ |
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public function addMiddleware($callback) |
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{ |
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$this->middlewares[] = function (Callable $next, Request $request, Response $response) use ($callback) { |
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$container = Container::getInstance(); |
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$parameters = array_merge([ |
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"request" => $request, |
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"response" => $response, |
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"next" => $next |
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], $request->getData()); |
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$container->call($callback, $parameters); |
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}; |
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} |
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/** |
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* Launch the route parsing |
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* |
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* @param \React\Http\Request $request |
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* @param \React\Restify\Response $response |
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* |
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* @throws \RuntimeException |
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* @return Void |
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*/ |
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public function launch(Request $request, Response $response) |
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{ |
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if (count($this->routes) === 0) { |
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throw new \RuntimeException("No routes defined"); |
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} |
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$this->uri = $request->httpRequest->getPath(); |
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if ($this->uri = null) { |
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$this->uri = "/"; |
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} |
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$request->on('end', function () use (&$request, &$response) { |
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$this->matchRoutes($request, $response); |
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}); |
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$request->on('error', function ($error) use (&$request, &$response) { |
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$this->emit('error', [$request, $response, $error]); |
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}); |
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$request->parseData(); |
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} |
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/** |
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* Try to match the current uri with all routes |
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* |
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* |
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* @param \React\Http\Request $request |
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* @param \React\Restify\Response $response |
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* |
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* @throws \RuntimeException |
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* @return Void |
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*/ |
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private function matchRoutes(Request $request, Response $response) |
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{ |
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$stack = []; |
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$path = $request->httpRequest->getPath(); |
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$method = $request->httpRequest->getMethod(); |
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foreach ($this->routes as $route) { |
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if (!$route->match($path, $method)) { |
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continue; |
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} |
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$methodArgs = $route->getArgs($path); |
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$request->setData($methodArgs); |
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$route->on('error', function (...$args) { |
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$this->emit('error', $args); |
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}); |
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$stack[] = function (...$params) use ($route) { |
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$route->run(...$params); |
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}; |
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} |
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if (count($stack) == 0) { |
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$this->emit('NotFound', array($request, $response)); |
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return; |
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} |
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$this->runStack($stack, $request, $response); |
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} |
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/** |
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* Launch route stack |
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* @param array $stack |
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* @param Request $request |
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* @param Response $response |
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* @return void |
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*/ |
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protected function runStack(array $stack, Request $request, Response $response) |
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{ |
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$stack[] = function () use ($response) { |
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$response->end(); |
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}; |
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$finalStack = array_merge($this->middlewares, $stack); |
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$this->waterfall($finalStack, [$request, $response]); |
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} |
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} |
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