<?
/**
 * URL router class
 * Updated on 04/11/2011
 *
 * PHP versions 5
 * @copyright     Copyright 2005-2010, Studio Hangloose srl
 * @link          http://www.studiohangloose.it
 * @author        Oliver Astrologo
 * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
 */
define('ROUTER_DEFAULT_CONTROLLER', 'home');
define('ROUTER_DEFAULT_ACTION', 'index');
class Router {
	public $request_uri;
	public $prefix_uri;
	public $routes;
	public $controller, $controller_name;
	public $action, $id;
	public $params;
	public $route_found = false;
	public function __construct() {
		$request = $_SERVER['REQUEST_URI'];
		$pos = strpos($request, '?');
		if ($pos) $request = substr($request, 0, $pos);
		$request = preg_replace('/[^A-Za-z0-9_\+\-%+\/]/', '', $request);
		$request = strtolower($request);
		$this->request_uri = $request;
		
		/* Language Detection */	
		$supported_languages = Settings::get('SUPPORTED_LANGUAGES');
		if($supported_languages){
			
			/* Prefix path support */
			if(Settings::get('PREFIX_PATH') && Settings::get('ADMIN_PATH'))
			{						
				$prefix_path = DS.Settings::get('PREFIX_PATH');
				$admin_path = DS.Settings::get('ADMIN_PATH');				
				$admin_check = substr($this->request_uri,0,strlen($admin_path)); 
				if($admin_check != $admin_path){
					$demo_check = substr($this->request_uri,0,strlen($prefix_path)); 
				if(	$demo_check != $prefix_path) exit(header('Location:  /comingsoon.html'));			
					$this->request_uri = substr($this->request_uri, strlen($prefix_path));
				}	
			}
						
			$prefix_uri = $supported_languages[0];
			$lang_check = substr($this->request_uri,0,3); 			   
			 foreach($supported_languages as $lang){
				$lang ='/'.$lang;
				if($lang == $lang_check){
					$this->request_uri = substr($this->request_uri, 3);
					$this->prefix_uri = $lang;
				break;
				}			 
			 }	
		}
		$this->routes = array();
	}
	public function map($rule, $target = array() , $conditions = array()) {
		$this->routes[$rule] = new Route($rule, $this->request_uri, $target, $conditions);
	}
	private function set_route($route) {
		$this->route_found = true;
		$params = $route->params;
		$this->controller = $params['controller'];
		unset($params['controller']);
		if (isset($params['action'])) $this->action = $params['action'];
		unset($params['action']);
		if (isset($params['id'])) $this->id = $params['id'];
		$this->params = $params;
		if (empty($this->controller)) $this->controller = ROUTER_DEFAULT_CONTROLLER;
		if (empty($this->action)) $this->action = ROUTER_DEFAULT_ACTION;
		if (empty($this->id)) $this->id = null;
		$w = explode('_', $this->controller);
		foreach ($w as $k => $v) $w[$k] = ucfirst($v);
		$this->controller_name = implode('', $w);
		$this->controller = preg_replace('/[^A-Za-z0-9-]/', '', $this->controller);
		$this->action = preg_replace('/[^A-Za-z0-9-]/', '', $this->action);
	}
	public function execute() {
	//	exit(0);
	foreach ($this->routes as $route) {
			if ($route->is_matched) {
				$this->set_route($route);
				break;
			}
		}
	}
}
class Route {
	public $is_matched = false;
	public $params;
	public $url;
	private $conditions;
	function __construct($url, $request_uri, $target, $conditions) {
		$this->url = $url;
		$this->params = array();
		$this->conditions = $conditions;
		$p_names = array();
		$p_values = array();
		preg_match_all('@:([\w]+)@', $url, $p_names, PREG_PATTERN_ORDER);
		$p_names = $p_names[0];
		$url_regex = preg_replace_callback('@:[\w]+@', array(
			$this,
			'regex_url'
		) , $url);
		$url_regex.= '/?';
		if (preg_match('@^' . $url_regex . '$@', $request_uri, $p_values)) {
			array_shift($p_values);
			foreach ($p_names as $index => $value) $this->params[substr($value, 1) ] = urldecode($p_values[$index]);
			foreach ($target as $key => $value) $this->params[$key] = $value;
			$this->is_matched = true;
		}
		unset($p_names);
		unset($p_values);
	}
	function regex_url($matches) {
		$key = str_replace(':', '', $matches[0]);
		if (array_key_exists($key, $this->conditions)) {
			return '(' . $this->conditions[$key] . ')';
		} else {
			return '([a-zA-Z0-9_\+\-%]+)';
		}
	}
}