<?php

/**

* Interface form for placing/modifying/viewing a blackout

* This file will present a form for a user to

*  make a new blackout or modify/delete an old one.

* It will also allow other users to view this blackout.

* @author Nick Korbel <lqqkout13@users.sourceforge.net>

* @version 02-22-04

* @package phpScheduleIt

*/

/**

* Template class

*/

include_once('lib/Template.class.php');

/**

* Reservation class

*/

include_once('lib/Blackout.class.php');





// Check that the admin is logged in

if (!Auth::isAdmin()) {

    CmnFns::do_error_box('This section is only available to the administrator.<br />'

        . '<a href="ctrlpnl.php">Back to My Control Panel</a>');

}



$t = new Template();



//AK HTTP_REFERER is blocked is cleared by gelman firewall will not run this check

if (isset($_POST['submit']) /*&& strstr($_SERVER['HTTP_REFERER'], $_SERVER['PHP_SELF'])*/) {

	$t->set_title('Processing Blackout');

	$t->printHTMLHeader();

	$t->startMain();



	process_blackout($_POST['fn']);

}

else {

	$blackout_info = getBlackoutInfo();

	$t->set_title($blackout_info['title']);

	$t->printHTMLHeader();

	$t->startMain();



	present_blackout($blackout_info['resid']);

}



// End main table

$t->endMain();



// Print HTML footer

$t->printHTMLFooter();



/**

* Processes a reservation request (add/del/edit)

* @param string $fn function to perform

*/

function process_blackout($fn) {

	$success = false;



	if (isset($_POST['resid']))

		$res = new Blackout($_POST['resid']);

	else if (isset($_GET['resid']))

		$res = new Blackout($_GET['resid']);

	else {

		$res = new Blackout();

		if (isset($_POST['repeat_day'])) {		// Check for reservation repeation

			$res->is_repeat = true;

			$repeat = get_repeat_dates($_POST['ts'], $_POST['repeat_day'], $_POST['duration']);

		}

		else

			$repeat = array($_POST['ts']);

	}



	if ($fn == 'create')

		$res->add_blackout($_POST['machid'], $_POST['starttime'], $_POST['endtime'], $repeat, $_POST['summary']);

	else if ($fn == 'modify')

		$res->mod_blackout($_POST['starttime'], $_POST['endtime'], isset($_POST['del']), isset($_POST['mod_recur']), $_POST['summary']);

	else if ($fn == 'delete')

		$res->del_blackout(isset($_POST['mod_recur']));

}



/**

* Prints out reservation info depending on what parameters

*  were passed in through the query string

* @param none

*/

function present_blackout($blackoutid) {

	// Get info about this reservation

	$blackout = new Blackout($blackoutid);

	$blackout->print_res();

}





/**

* Return array of data from query string about this reservation

*  or about a new reservation being created

* @param none

*/

function getBlackoutInfo() {

	$blackout_info = array();



	// Determine title and set needed variables

	$blackout_info['type'] = $_GET['type'];

	switch($blackout_info['type']) {

		case 'r' :

			$blackout_info['title'] = 'New Blackout';

			$blackout_info['resid']	= null;

			break;

		case 'm' :

			$blackout_info['title'] = 'Modify Blackout';

			$blackout_info['resid'] = $_GET['resid'];

			break;

		case 'd' :

			$blackout_info['title'] = 'Delete Blackout';

			$blackout_info['resid'] = $_GET['resid'];

			break;

	}



	return $blackout_info;

}



/**

* Returns an array of all timestamps for repeat reservations

* @param int $res_date initial reservation date

* @param array $days_to_repeat days of week to repeat reservation

* @param int $duration weeks to repeat reservation for

* @return array of timestamps of reservations

*/

function get_repeat_dates($blackout_date, $days_to_repeat, $duration) {

	$day_of_week = date('w', $blackout_date);		// Day of week for initial reservation



	$blackout_dates = array($blackout_date);

	$date_vals = getdate($blackout_date);



	// Repeat for all weeks

	$additional_days = 0;

	for ($repeat_week = 0; $repeat_week < $duration; $repeat_week++) {		// Repeat for duration

		for ($i = 0; $i < count($days_to_repeat); $i++) {					// Repeat for all days selected

			$days_between = ($days_to_repeat[$i] - $day_of_week) + $additional_days;

			// If the day of week is less than reservation day of week, move ahead one week

			if ($days_to_repeat[$i] <= $day_of_week) {

				$days_between += 7;

			}

			$blackout_date = mktime(0,0,0, $date_vals['mon'], $date_vals['mday'] + $days_between);

			array_push($blackout_dates, $blackout_date);

		}

		$additional_days += 7;	// Move ahead one week

	}



	return $blackout_dates;

}

?>