<?php
class Route extends \BaseController {
    public $_routes;
    private $_page;

    public function __construct() {
        $this->_routes = array(
                'about'         => array('x'),
                'account'       => false,
                'accountnext'   => array('s', 'err'),
                'admin'         => false,
                'blog'          => array('f', 'i'),
                'tag'           => array('t', 'i'),
                'chat'          => array('f'),
                'conf'          => false,
                'contact'       => array('f'),
                'disconnect'    => array('err'),
                'feed'          => array('s', 'n'),
                'node'          => array('s', 'n', 'i'),
                'group'         => array('s', 'n', 'i'),
                'help'          => false,
                'infos'         => false,
                'login'         => array('err'),
                'main'          => false,
                'media'         => array('f'),
                'news'          => array('n'),
                'pods'          => false,
                'profile'       => false,
                'room'          => array('r'),
                'share'         => array('url'),
                'visio'         => false
            );
    }

    public function find() {
        $this->fix($_GET, $_SERVER['QUERY_STRING']);

        $gets = array_keys($_GET);
        $uri = reset($gets);
        unset($_GET[$uri]);
        $request = explode('/', $uri);

        $this->_page = array_shift($request);

        if(isset($this->_routes[$this->_page]))
            $route = $this->_routes[$this->_page];

        if(count($request) && isset($route)) {
            $i = 0;
            foreach($route as $key) {
                if (isset($request[$i])) {
                    $_GET[$key] = $request[$i];
                }
                $i++;
            }
        }

        if(empty($this->_page))
            $this->_page = 'main';

        if(!isset($this->_routes[$this->_page]))
            $this->_page = 'notfound';

        return $this->_page;
    }

    public static function urlize($page, $params = false, $tab = false) {
        $r = new Route();
        $routes = $r->_routes;

        if($page === 'root')
            return BASE_URI;

        if(isset($routes[$page])) {
            if($tab != false)
                $tab = '#'.$tab;

            //We construct a classic URL if the rewriting is disabled
            else {
                $uri = BASE_URI . '?'. $page;
            }

            if($params != false && is_array($params)) {
                foreach($params as $value) {
                    $uri .= '/' . $value ;
                }
            } elseif($params != false) {
                $uri .= '/' . $params;
            }
            
            return $uri.$tab;
        } else {
            throw new Exception(__('Route not set for the page %s', $page));
        }
    }

    private function fix(&$target, $source, $discard = true) {
        if ($discard)
            $target = array();

        $source = preg_replace_callback(
            '/(^|(?<=&))[^=[&]+/',
            function($key) { return bin2hex(urldecode($key[0])); },
            $source
        );

        parse_str($source, $post);
        foreach($post as $key => $val)
            $target[ hex2bin($key) ] = $val;
    }
}