| commit | author | age | ||
| 15e03a | 1 | <?php |
| F | 2 | |
| 3 | namespace Framework; | |
| 4 | ||
| 5 | use Framework\Exceptions\PageNotFoundException; | |
| 6 | use ReflectionMethod; | |
| 7 | use UnexpectedValueException; | |
| 8 | ||
| 9 | class Dispatcher { | |
| 10 | public function __construct(private Router $router, | |
| 11 | private Container $container, | |
| 12 | private array $middleware_classes) { } | |
| 13 | ||
| 14 | public function handle(Request $request): Response { | |
| 15 | ||
| 16 | $path = $this->getPath($request->uri); | |
| 17 | $params = $this->router->match($path, $request->method); | |
| 18 | ||
| 19 | if($params === false) { | |
| 20 | throw new PageNotFoundException("No route matched for '$path' with method '$request->method'"); | |
| 21 | } | |
| 22 | ||
| 23 | $controller = "App\Controllers\\" . ucwords($params["controller"]); | |
| 24 | ||
| 25 | $action = $this->getActionName($params); | |
| 26 | $controller = $this->getControllerName($params); | |
| 27 | ||
| 28 | $controller_object = $this->container->get($controller); | |
| 29 | ||
| 30 | $controller_object->setViewer($this->container->get(TemplateViewerInterface::class)); | |
| 31 | $controller_object->setResponse($this->container->get(Response::class)); | |
| 32 | ||
| 33 | $args = $this->getActionArguments($controller, $action, $params); | |
| 34 | $controller_handler = new ControllerRequestHandler($controller_object, $action, $args); | |
| 35 | ||
| 36 | $middleware = $this->getMiddleware($params); | |
| 37 | ||
| 38 | $middleware_handler = new MiddlewareRequestHandler($middleware, | |
| 39 | $controller_handler); | |
| 40 | ||
| 41 | return $middleware_handler->handle($request); | |
| 42 | } | |
| 43 | ||
| 44 | ||
| 45 | private function getMiddleware(array $params): array { | |
| 46 | if( !array_key_exists("middleware", $params)) { | |
| 47 | return []; | |
| 48 | } | |
| 49 | ||
| 50 | $middleware = explode("|" ,$params["middleware"]); | |
| 51 | ||
| 52 | array_walk($middleware, function(&$value) { | |
| 53 | if(!array_key_exists($value, $this->middleware_classes)) { | |
| 54 | throw new UnexpectedValueException("Middleware '$value' not found in config settings"); | |
| 55 | } | |
| 56 | ||
| 57 | $value = $this->container->get($this->middleware_classes[$value]); | |
| 58 | }); | |
| 59 | ||
| 60 | return $middleware; | |
| 61 | } | |
| 62 | ||
| 63 | private function getActionArguments(string $controller, string $action, array $params = []): array { | |
| 64 | $args = []; | |
| 65 | $method = new ReflectionMethod($controller, $action); | |
| 66 | foreach($method->getParameters() as $parameter) { | |
| 67 | ||
| 68 | $name = $parameter->getName(); | |
| 69 | $args[$name] = $params[$name]; | |
| 70 | } | |
| 71 | ||
| 72 | return($args); | |
| 73 | } | |
| 74 | ||
| 75 | private function getControllerName(array $params): string { | |
| 76 | $controller = $params["controller"]; | |
| 77 | $controller = str_replace("-", "", ucwords(strtolower($controller), "-")); | |
| 78 | $namespace = "App\Controllers"; | |
| 79 | ||
| 80 | if(array_key_exists("namespace", $params)) { | |
| 81 | $namespace .= "\\" . $params["namespace"]; | |
| 82 | } | |
| 83 | ||
| 84 | return $namespace . "\\" . $controller; | |
| 85 | ||
| 86 | } | |
| 87 | ||
| 88 | ||
| 89 | private function getActionName(array $params): string | |
| 90 | { | |
| 91 | $action = $params["action"]; | |
| 92 | ||
| 93 | $action = lcfirst(str_replace("-", "", ucwords(strtolower($action), "-"))); | |
| 94 | ||
| 95 | return $action; | |
| 96 | } | |
| 97 | ||
| 98 | public function getPath(string $uri): string { | |
| 99 | $path = parse_url($uri, PHP_URL_PATH); | |
| 100 | if ($path === false) { | |
| 101 | throw new UnexpectedValueException("Malformed URL: {$uri}"); | |
| 102 | } | |
| 103 | return $path; | |
| 104 | } | |
| 105 | } | |
