From 3c6d269eb0643e09bbf4fe263e47e4ed49692955 Mon Sep 17 00:00:00 2001
From: rootcoma <rootcoma@gmail.com>
Date: Thu, 5 Dec 2013 15:59:30 -0800
Subject: [PATCH] Adding Routing and Route

---
 php/includes/Controller.php |  42 ++++++++++++++
 php/includes/Route.php      |  71 ++++++++++++++++++++++++
 php/includes/Router.php     | 108 ++++++++++++++++++++++++++++++++++++
 3 files changed, 221 insertions(+)
 create mode 100644 php/includes/Controller.php
 create mode 100644 php/includes/Route.php
 create mode 100644 php/includes/Router.php

diff --git a/php/includes/Controller.php b/php/includes/Controller.php
new file mode 100644
index 0000000..6e53d52
--- /dev/null
+++ b/php/includes/Controller.php
@@ -0,0 +1,42 @@
+<?php
+class Controller
+{
+    protected $container;
+
+    public function __construct($container) {
+        $this->container = $container;
+    }
+
+    public function getContainer() {
+        return $this->container();
+    }
+
+    protected function redirect($page) {
+        $this->container->redirect($page);
+    }
+
+    protected function setTitle($title) {
+        $this->container->setTitle($title);
+    }
+
+    protected function render($page, $args=array()) {
+        $this->container->render($page, $args);
+    }
+
+    protected function getNotice($notice) {
+        return $this->container->getNotice;
+    }
+
+    protected function clearNotice() {
+        $this->container->clearNotice();
+    }
+
+    protected function setNotice($notice) {
+        $this->container->setNotice($notice);
+    }
+
+    protected function render404() {
+        $this->container->set404();
+        $this->container->render404();
+    }
+}
diff --git a/php/includes/Route.php b/php/includes/Route.php
new file mode 100644
index 0000000..1575a0e
--- /dev/null
+++ b/php/includes/Route.php
@@ -0,0 +1,71 @@
+<?php
+class Route
+{
+    private $url;
+    private $methods = array('GET','POST','PUT','DELETE');
+    private $target;
+    private $name;
+    private $filters = array();
+    private $parameters = array();
+
+    public function getUrl() {
+        return $this->url;
+    }
+
+    public function setUrl($url) {
+        $url = (string) $url;
+
+        // make sure that the URL is suffixed with a forward slash
+        if(substr($url,-1) !== '/') $url .= '/';
+        
+        $this->url = $url;
+    }
+
+    public function getTarget() {
+        return $this->target;
+    }
+
+    public function setTarget($target) {
+        $this->target = $target;
+    }
+
+    public function getMethods() {
+        return $this->methods;
+    }
+
+    public function setMethods(array $methods) {
+        $this->methods = $methods;
+    }
+
+    public function getName() {
+        return $this->name;
+    }
+
+    public function setName($name) {
+        $this->name = (string) $name;
+    }
+
+    public function setFilters(array $filters) {
+        $this->filters = $filters;
+    }
+
+    public function getRegex() {
+        return preg_replace_callback("/:(\w+)/", array(&$this, 'substituteFilter'), $this->url);
+    }
+
+    private function substituteFilter($matches) {
+        if (isset($matches[1]) && isset($this->filters[$matches[1]])) {
+                return $this->filters[$matches[1]];
+            }
+        
+            return "([\w-]+)";
+    }
+
+    public function getParameters() {
+        return $this->parameters;
+    }
+
+    public function setParameters(array $parameters) {
+        $this->parameters = $parameters;
+    }
+}
diff --git a/php/includes/Router.php b/php/includes/Router.php
new file mode 100644
index 0000000..e9be5e2
--- /dev/null
+++ b/php/includes/Router.php
@@ -0,0 +1,108 @@
+<?php
+class Router
+{
+    private $routes = array();
+    private $namedRoutes = array();
+    private $basePath = '';
+
+    public function setBasePath($basePath) {
+        $this->basePath = (string) $basePath;
+    }
+
+    public function map($routeUrl, $target = '', array $args = array()) {
+        $route = new Route();
+
+        $route->setUrl($this->basePath . $routeUrl);
+
+        $route->setTarget($target);
+
+        if(isset($args['methods'])) {
+            $methods = explode(',', $args['methods']);
+            $route->setMethods($methods);
+        }
+
+        if(isset($args['filters'])) {
+            $route->setFilters($args['filters']);
+        }
+
+        if(isset($args['name'])) {
+            $route->setName($args['name']);
+            if (!isset($this->namedRoutes[$route->getName()])) {
+                $this->namedRoutes[$route->getName()] = $route;
+            }
+        }
+
+        $this->routes[] = $route;
+    }
+
+    public function matchCurrentRequest() {
+        $requestMethod = (isset($_POST['_method']) && ($_method = strtoupper($_POST['_method'])) && in_array($_method,array('PUT','DELETE'))) ? $_method : $_SERVER['REQUEST_METHOD'];
+        $requestUrl = $_SERVER['REQUEST_URI'];
+
+        // strip GET variables from URL
+        if(($pos = strpos($requestUrl, '?')) !== false) {
+            $requestUrl =  substr($requestUrl, 0, $pos);
+        }
+
+        return $this->match($requestUrl, $requestMethod);
+    }
+
+    public function match($requestUrl, $requestMethod = 'GET') {
+
+        foreach($this->routes as $route) {
+            
+            // compare server request method with route's allowed http methods
+            if(!in_array($requestMethod, $route->getMethods())) continue;
+
+            // check if request url matches route regex. if not, return false.
+            if (!preg_match("@^".$route->getRegex()."*$@i", $requestUrl, $matches)) continue;
+
+            $params = array();
+
+            if (preg_match_all("/:([\w-]+)/", $route->getUrl(), $argument_keys)) {
+
+                // grab array with matches
+                $argument_keys = $argument_keys[1];
+
+                // loop trough parameter names, store matching value in $params array
+                foreach ($argument_keys as $key => $name) {
+                    if (isset($matches[$key + 1]))
+                        $params[$name] = $matches[$key + 1];
+                }
+
+            }
+
+            $route->setParameters($params);
+
+            return $route;
+            
+        }
+
+        return false;
+    }
+
+    public function generate($routeName, array $params = array()) {
+        // Check if route exists
+        if (!isset($this->namedRoutes[$routeName]))
+            throw new Exception("No route with the name $routeName has been found.");
+
+        $route = $this->namedRoutes[$routeName];
+
+        $url = $route->getUrl();
+
+        // replace route url with given parameters
+        if ($params && preg_match_all("/:(\w+)/", $url, $param_keys)) {
+
+            // grab array with matches
+            $param_keys = $param_keys[1];
+
+            // loop trough parameter names, store matching value in $params array
+            foreach ($param_keys as $i => $key) {
+                if (isset($params[$key]))
+                    $url = preg_replace("/:(\w+)/", $params[$key], $url, 1);
+            }
+        }
+
+        return $url;
+    }
+}