<?php
/**
* @copyright (C) 2013 iJoomla, Inc. - All rights reserved.
* @license GNU General Public License, version 2 (http://www.gnu.org/licenses/gpl-2.0.html)
* @author iJoomla.com <webmaster@ijoomla.com>
* @url https://www.jomsocial.com/license-agreement
* The PHP code portions are distributed under the GPL license. If not otherwise stated, all images, manuals, cascading style sheets, and included JavaScript *are NOT GPL, and are released under the IJOOMLA Proprietary Use License v1.0
* More info at https://www.jomsocial.com/license-agreement
*/
// no direct access
defined('_JEXEC') or die('Restricted access');

jimport('joomla.utilities.date');

class CDatetime extends JDate
{
	private $_datetime = false;
	private $_current = false;

	public function __construct()
	{
		parent::__construct();
		$this->setDate('now');
		$this->_current = isset($this->_date)?$this->_date:$this->format('U');
	}

	public function setDate($time, $tzOffset=0)
	{
		$this->_datetime = getdate(JDate::getInstance($time, $tzOffset)->toUnix());
	}

	public function reset()
	{
		$this->_date = $this->_current;
		$this->_datetime = getdate($this->_current);
	}

	public function manipulate($interval, $amount)
	{
		$amount = intval($amount);

		switch ($interval)
		{
			case 'year':
				$this->_datetime['year'] += $amount;
				break;
			case 'month':
				$this->_datetime['mon'] += $amount;
				break;
			case 'day':
				$this->_datetime['mday'] += $amount;
				break;
			case 'hour':
				$this->_datetime['hours'] += $amount;
				break;
			case 'minute':
				$this->_datetime['minutes'] += $amount;
				break;
			case 'second':
				$this->_datetime['seconds'] += $amount;
				break;
			default:
				break;
		}

		$this->_date = mktime($this->_datetime['hours'],$this->_datetime['minutes'],$this->_datetime['seconds'],$this->_datetime['mon'],$this->_datetime['mday'],$this->_datetime['year']);
	}

}