Refactored Http.

src/PHPCensor/Http/Router.php

@@ -0,0 +1,128 @@
+<?php
+
+namespace PHPCensor\Http;
+
+use PHPCensor\Application;
+use PHPCensor\Config;
+
+class Router
+{
+    /**
+     * @var Request;
+     */
+    protected $request;
+
+    /**
+     * @var Config;
+     */
+    protected $config;
+
+    /**
+     * @var Application
+     */
+    protected $application;
+
+    /**
+     * @var array
+     */
+    protected $routes = [['route' => '/:controller/:action', 'callback' => null, 'defaults' => []]];
+
+    public function __construct(Application $application, Request $request, Config $config)
+    {
+        $this->application = $application;
+        $this->request     = $request;
+        $this->config      = $config;
+    }
+
+    public function clearRoutes()
+    {
+        $this->routes = [];
+    }
+
+    /**
+     * @param string $route Route definition
+     * @param array $options
+     * @param callable $callback
+     * @throws \InvalidArgumentException
+     */
+    public function register($route, $options = [], $callback = null)
+    {
+        if (!is_callable($callback)) {
+            throw new \InvalidArgumentException('$callback must be callable.');
+        }
+
+        array_unshift($this->routes, ['route' => $route, 'callback' => $callback, 'defaults' => $options]);
+    }
+
+    public function dispatch()
+    {
+        foreach ($this->routes as $route) {
+            $pathParts = $this->request->getPathParts();
+
+            //-------
+            // Set up default values for everything:
+            //-------
+            $thisNamespace = 'Controller';
+            $thisController = null;
+            $thisAction = null;
+
+            if (array_key_exists('namespace', $route['defaults'])) {
+                $thisNamespace = $route['defaults']['namespace'];
+            }
+
+            if (array_key_exists('controller', $route['defaults'])) {
+                $thisController = $route['defaults']['controller'];
+            }
+
+            if (array_key_exists('action', $route['defaults'])) {
+                $thisAction = $route['defaults']['action'];
+            }
+
+            $routeParts = array_filter(explode('/', $route['route']));
+            $routeMatches = true;
+
+            while (count($routeParts)) {
+                $routePart = array_shift($routeParts);
+                $pathPart = array_shift($pathParts);
+
+                switch ($routePart) {
+                    case ':namespace':
+                        $thisNamespace = !is_null($pathPart) ? $pathPart : $thisNamespace;
+                        break;
+                    case ':controller':
+                        $thisController = !is_null($pathPart) ? $pathPart : $thisController;
+                        break;
+                    case ':action':
+                        $thisAction = !is_null($pathPart) ? $pathPart : $thisAction;
+                        break;
+                    default:
+                        if ($routePart != $pathPart) {
+                            $routeMatches = false;
+                        }
+                }
+
+                if (!$routeMatches || !count($pathParts)) {
+                    break;
+                }
+            }
+
+            $thisArgs = $pathParts;
+
+            if ($routeMatches) {
+                $route = [
+                    'namespace'  => $thisNamespace,
+                    'controller' => $thisController,
+                    'action'     => $thisAction,
+                    'args'       => $thisArgs,
+                    'callback'   => $route['callback']
+                ];
+
+                if ($this->application->isValidRoute($route)) {
+                    return $route;
+                }
+            }
+        }
+
+        return null;
+    }
+}