<?php

class Request
{
    var $path = '';
    var $queryString = '';

    var $params = array('module' => '', 'p' => '', 'page' => '');
    public function __construct()
    {
        $request_uri = $this->getUrl();

        $__tmpUri = parse_url($request_uri);
        $this->path = isset($__tmpUri['path']) ? $__tmpUri['path'] : '';
        $this->queryString = isset($__tmpUri['query']) ? $__tmpUri['query'] : '';
    }

    public function getParams()
    {
        if(!empty($this->queryString))
        {
             parse_str($this->queryString, $array2String);
             foreach ($array2String as $k=>$v)
             {
                $this->params[$k] = $v;
             }

        }
        if(!empty($this->path))
        {
            $request_params = explode("/", $this->path);
        }
        else
        {
            $request_params = array();
        }

        $cnt = 1;
        if(count($request_params))
        {
            foreach ($request_params as $k => $v)
            {

                if(!empty($v))
                {
                    if(empty($this->params['module']))
                    {
                        if(is_numeric($v))
                        {
                            $this->params['page'] = $v;
                        }
                        else
                        {
                            $this->params['module'] = $v;
                        }
                        $cnt++;
                        continue;
                    }


                    if(empty($this->params['p']))
                    {
                        if(is_numeric($v))
                        {
                            $this->params['page'] = $v;
                        }
                        else
                        {
                            $this->params['p'] = $v;
                        }
                        $cnt++;
                        continue;
                    }

                    if($k == $cnt)
                    {
                        $this->params[$v] = $request_params[$k + 1];
                        $cnt+=2;
                        continue;
                    }
                }
            }
        }
        return $this->params;

    }

    public function getParam($param, $defaultValue = null)
    {
        $this->getParams();

        if(isset($this->params[$param]))
        {
            return $this->params[$param];
        }
        else
        {
            return $defaultValue;
        }
    }

    protected function getUrl()
    {
        $request_uri = $_SERVER['REQUEST_URI'];
        if($request_uri{0} != '/')
        {
            $request_uri = "/".$request_uri;
        }
        return  $request_uri;
    }
}

?>