<?php
/***************************************************************
 * Copyright notice
 *
 * (c) 2005-2008 Mario Matzulla
 * (c) 2005-2008 Christian Technology Ministries International Inc.
 * All rights reserved
 *
 * This file is part of the Web-Empowered Church (WEC)
 * (http://WebEmpoweredChurch.org) ministry of Christian Technology Ministries 
 * International (http://CTMIinc.org). The WEC is developing TYPO3-based
 * (http://typo3.org) free software for churches around the world. Our desire
 * is to use the Internet to help offer new life through Jesus Christ. Please
 * see http://WebEmpoweredChurch.org/Jesus.
 *
 * You can redistribute this file and/or modify it under the terms of the 
 * GNU General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or (at your option) any later version.
 *
 * The GNU General Public License can be found at
 * http://www.gnu.org/copyleft/gpl.html.
 *
 * This file is distributed in the hope that it will be useful for ministry,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * This copyright notice MUST APPEAR in all copies of the file!
 ***************************************************************/

require_once(t3lib_extMgm::extPath('cal').'controller/class.tx_cal_functions.php');

/**
 * This class combines all the time related functions
 *
 * @author	Mario Matzulla <mario(at)matzullas.de>
 */
class tx_cal_calendar {
			

	// takes iCalendar 2 day format and makes it into 3 characters
	// if $txt is true, it returns the 3 letters, otherwise it returns the
	// integer of that day; 0=Sun, 1=Mon, etc.
	function two2threeCharDays($day, $txt=true) {
		switch($day) {
			case 'SU': return ($txt ? 'sun' : '0');
			case 'MO': return ($txt ? 'mon' : '1');
			case 'TU': return ($txt ? 'tue' : '2');
			case 'WE': return ($txt ? 'wed' : '3');
			case 'TH': return ($txt ? 'thu' : '4');
			case 'FR': return ($txt ? 'fri' : '5');
			case 'SA': return ($txt ? 'sat' : '6');
		}
	}
	
	function getYear($date){
		$day_array2 = array();
		preg_match ('/([0-9]{4})([0-9]{2})([0-9]{2})/', $date, $day_array2);
		return $day_array2[1];
	}
	
	function getMonth($date) {
		$day_array2 = array();
		preg_match ('/([0-9]{4})([0-9]{2})([0-9]{2})/', $date, $day_array2);
		return $day_array2[2];
	}
	
	function getDay($date) {
		$day_array2 = array();
		preg_match ('/([0-9]{4})([0-9]{2})([0-9]{2})/', $date, $day_array2);
		return $day_array2[3];
	}
	
	function calculateStartDayTime($dateObject=''){
		$timeObj = new tx_cal_date();
		$timeObj->setTZbyId('UTC');
		if($dateObject){
			$timeObj->copy($dateObject);
		}
		$timeObj->setHour(0);
		$timeObj->setMinute(0);
		$timeObj->setSecond(0);
		return $timeObj;
	}
	
	function calculateEndDayTime($dateObject=''){
		$timeObj = new tx_cal_date();
		$timeObj->setTZbyId('UTC');
		if($dateObject){
			$timeObj->copy($dateObject);
		}
		$timeObj->setHour(23);
		$timeObj->setMinute(59);
		$timeObj->setSecond(59);
		return $timeObj;
	}
	
	function calculateStartWeekTime($dateObject=''){
		$timeObj = tx_cal_calendar::calculateStartDayTime($dateObject);
		$timeObj = new tx_cal_date(Date_Calc::beginOfWeek($timeObj->getDay(),$timeObj->getMonth(),$timeObj->getYear()));
		$timeObj->setTZbyId('UTC');
		return $timeObj;
	}
	
	function calculateEndWeekTime($dateObject=''){
		$timeObj = tx_cal_calendar::calculateStartWeekTime($dateObject);
		$timeObj->addSeconds(604799);
		return $timeObj;
	}
	
	function calculateStartMonthTime($dateObject=''){
		$timeObj = tx_cal_calendar::calculateStartDayTime($dateObject);
		$timeObj->setDay(1);
		return $timeObj;
	}
	
	function calculateEndMonthTime($dateObject=''){
		$timeObj = tx_cal_calendar::calculateStartDayTime($dateObject);
		$timeObj = new tx_cal_date(Date_Calc::endOfNextMonth($timeObj->getDay(), $timeObj->getMonth(), $timeObj->getYear()));
		$timeObj->setDay(1);
		$timeObj->subtractSeconds(1);
		$timeObj->setTZbyId('UTC');
		return $timeObj;
	}
	
	function calculateStartYearTime($dateObject=''){
		$timeObj = tx_cal_calendar::calculateStartMonthTime($dateObject);
		$timeObj->setMonth(1);
		return $timeObj;
	}
	
	function calculateEndYearTime($dateObject=''){
		$timeObj = tx_cal_calendar::calculateStartYearTime($dateObject);
		$timeObj->setYear($timeObj->getYear()+1);
		$timeObj->subtractSeconds(1);
		return $timeObj;
	}
	
	function getHourFromTime($time) {
		$time = str_replace(':', '', $time);
		
	    if ($time) {
			$retVal = substr($time, 0, strlen($time)-2);
		}
		return $retVal;
	}
	function getMinutesFromTime($time) {
		$time = str_replace(':', '', $time);
		if ($time) {
			$retVal = substr($time,-2);
		}
		return $retVal;
	}
	
	function getTimeFromTimestamp($timestamp=0){
		if($timestamp>0){
			// gmdate and gmmktime are ok, as long as the timestamp just holds information about 24h.
			return gmmktime(gmdate('H',$timestamp),gmdate('i',$timestamp),0,0,0,1) - gmmktime(0,0,0,0,0,1);
		}
		return 0;
	}
}

if (defined('TYPO3_MODE') && $TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/cal/controller/class.tx_cal_calendar.php']) {
	include_once ($TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/cal/controller/class.tx_cal_calendar.php']);
}

?>