<?php
/* $Id$ */
namespace MCMS;

(defined('MCMS') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

/**
 * Abstraction class for the request parameters
 *
 * @author Stefan Daurer
 * @since 1.0.0
 */
class Request {
	private $agent;
	private $param;

	public function __construct() {
		$this->agent = new \Mammut\Info\UserAgent();
		$this->param = array();
		switch(strtoupper($_SERVER['REQUEST_METHOD'])) {
			case 'GET':
				$this->param = $_GET;
			break;
			case 'POST':
				$this->param = $_POST;
			break;
		}
	}

	/**
	 * Returns the type of the request.
	 * Possible values cloud be GET, PUT, POST and others, see http specs and the php docs
	 * for details.
	 *
	 * @return string the request type
	 */
	public function getType() {
		return strtoupper($_SERVER['REQUEST_METHOD']);
	}

	/**
	 * data fetching method, which returns the request parameter values
	 *
	 * @param $key string
	 *        	optional key that should be returned. if none is given, the whole array
	 *        	will be returned
	 * @return mixed the parameter array given by the request, or the specific value if a
	 *         key is given
	 */
	public function getParam($key = NULL) {
		if(!is_null($key))
			return $this->param[(string) $key];
		return $this->param;
	}

	public function update($key, $value) {
		$this->param[$key] = $value;
	}

	public function getUserAgent() {
		return $this->agent;
	}

	public function isValid() {
		return true;
	}
}