initial

1 files changed, 79 insertions, 0 deletions

diff --git a/engine/RequestDispatcher.php b/engine/RequestDispatcher.php
new file mode 100644
index 0000000..38b965d
--- /dev/null
+++ b/engine/RequestDispatcher.php
@@ -0,0 +1,79 @@
+<?php
+
+class RequestDispatcher {
+
+    public function __construct(
+        protected Router $router
+    ) {}
+
+    public function dispatch(): void {
+        try {
+            if (!in_array($_SERVER['REQUEST_METHOD'], ['POST', 'GET']))
+                throw new NotImplementedException('Method '.$_SERVER['REQUEST_METHOD'].' not implemented');
+
+            $route = $this->router->find(self::path());
+            if ($route === null)
+                throw new NotFoundException('Route not found');
+
+            $route = preg_split('/ +/', $route);
+            $handler_class = $route[0];
+            if (($pos = strrpos($handler_class, '/')) !== false) {
+                $class_name = substr($handler_class, $pos+1);
+                $class_name = ucfirst(to_camel_case($class_name));
+                $handler_class = str_replace('/', '\\', substr($handler_class, 0, $pos)).'\\'.$class_name;
+            } else {
+                $handler_class = ucfirst(to_camel_case($handler_class));
+            }
+            $handler_class = 'handler\\'.$handler_class;
+
+            if (!class_exists($handler_class))
+                throw new NotFoundException('Handler class "'.$handler_class.'" not found');
+
+            $router_input = [];
+            if (count($route) > 1) {
+                for ($i = 1; $i < count($route); $i++) {
+                    $var = $route[$i];
+                    list($k, $v) = explode('=', $var);
+                    $router_input[trim($k)] = trim($v);
+                }
+            }
+
+            $skin = new Skin();
+            $skin->static[] = '/css/common-bundle.css';
+            $skin->static[] = '/js/common.js';
+
+            /** @var RequestHandler $handler */
+            $handler = new $handler_class($skin, LangData::getInstance(), $router_input);
+            $resp = $handler->beforeDispatch();
+            if ($resp instanceof Response) {
+                $resp->send();
+                return;
+            }
+
+            $resp = call_user_func([$handler, strtolower($_SERVER['REQUEST_METHOD'])]);
+        } catch (NotFoundException $e) {
+            $resp = $this->getErrorResponse($e, 'not_found');
+        } catch (ForbiddenException $e) {
+            $resp = $this->getErrorResponse($e, 'forbidden');
+        } catch (NotImplementedException $e) {
+            $resp = $this->getErrorResponse($e, 'not_implemented');
+        } catch (UnauthorizedException $e) {
+            $resp = $this->getErrorResponse($e, 'unauthorized');
+        }
+        $resp->send();
+    }
+
+    protected function getErrorResponse(Exception $e, string $render_function): Response {
+        $ctx = new SkinContext('\\skin\\error');
+        $html = call_user_func([$ctx, $render_function], $e->getMessage());
+        return new Response($e->getCode(), $html);
+    }
+
+    public static function path(): string {
+        $uri = $_SERVER['REQUEST_URI'];
+        if (($pos = strpos($uri, '?')) !== false)
+            $uri = substr($uri, 0, $pos);
+        return $uri;
+    }
+
+}