<?php // $Id: add.php,v 1.7 2006/02/25 18:07:32 dlnsk Exp $

// Modified by Fumi.Iseki to add_multi.php  2007/03/19
//                                          2012/04/19
//                                          2013/04/12


require_once('../../config.php');	
require_once($CFG->libdir.'/blocklib.php');
require_once('lib.php');	


$courseid = required_param('course',   PARAM_INTEGER);	// Course id
$classid  = optional_param('class', 0, PARAM_INTEGER);
$mode 	  = optional_param('mode', '', PARAM_ALPHA); 	// multiply or empty

if (($formdata = data_submitted()) and !confirm_sesskey()) {
	print_error('invalidsesskey');
}

$urlparams['course'] = $courseid;
if ($classid) $urlparams['class'] = $classid;
if ($mode) 	  $urlparams['mode']  = $mode;
$PAGE->set_url('/blocks/autoattend/add_multi.php', $urlparams);

$wwwBlock = $CFG->wwwroot.'/blocks/autoattend';
$wwwMyURL = $wwwBlock.'/add_multi.php';
$back2URL = $wwwBlock.'/index.php';


$course = $DB->get_record('course', array('id'=>$courseid));
if (!$course) {
	print_error('courseidwrong', 'block_autoattend');
}

require_login($course->id);

$context = get_context_instance(CONTEXT_COURSE, $course->id);
$isteacher = jbxl_is_teacher($USER->id, $context);
if (!$isteacher) {
	print_error('notaccessnoteacher', 'block_autoattend');
}

$user = $DB->get_record('user', array('id'=>$USER->id));
if (!$user) {
	print_error('nosuchuser', 'block_autoattend');
}


// Print Header
$title = $course->shortname.': '.get_string('autoattend','block_autoattend');
if ($course->category) {
	$title.= ' '.get_string('add_multi','block_autoattend');
} 

$PAGE->set_title($title);
$PAGE->set_heading($course->fullname);
$PAGE->set_cacheable(true);
$PAGE->set_button('&nbsp;');
$PAGE->set_headingmenu(navmenu($course));

echo $OUTPUT->header();


$currenttab = 'add_multi';	
include('tabs.php');
	

// add record
if ($mode==='multiply') {
	$startday	= required_param('startday',   PARAM_INTEGER);
	$startmonth	= required_param('startmonth', PARAM_INTEGER);
	$startyear 	= required_param('startyear',  PARAM_INTEGER);		
	$endday		= required_param('endday',     PARAM_INTEGER);
	$endmonth 	= required_param('endmonth',   PARAM_INTEGER);
	$endyear 	= required_param('endyear',    PARAM_INTEGER);	
	$period		= required_param('period',     PARAM_INTEGER);

	$method	 	= required_param('method',     PARAM_ALPHA);
	$shour	  	= required_param('shour',      PARAM_INTEGER);
	$smin	   	= required_param('smin',       PARAM_INTEGER);
	$ehour	  	= required_param('ehour',      PARAM_INTEGER);
	$emin	   	= required_param('emin',       PARAM_INTEGER);
	$lmin	   	= required_param('lmin',       PARAM_INTEGER); 
	$attendkey  = required_param('attendkey',  PARAM_ALPHA);
	$allowip	= required_param('allowip',    PARAM_TEXT); 

	$sdays 		= optional_param_array('sdays', '',PARAM_ALPHA);
	$randomkey  = optional_param('randomkey',  0,  PARAM_INTEGER);
	$denysameip = optional_param('denysameip', 0,  PARAM_INTEGER);

	if (empty($denysameip)) $denysameip = '0';

	$starttime  = $shour*ONE_HOUR + $smin*ONE_MIN - $TIME_OFFSET;
	$endtime	= $ehour*ONE_HOUR + $emin*ONE_MIN - $TIME_OFFSET;
	$startdate  = mktime(0, 0, 0, $startmonth, $startday, $startyear);
	$enddate	= mktime(0, 0, 0, $endmonth,   $endday,   $endyear);
	$latetime   = ($lmin - 1)*MIN_INTVL*ONE_MIN;

	if (empty($sdays)) {
		global $OMITTED_DAYS;
		$sdays = array();
		$dinfo = getdate($startdate);
		$sdays['0'] = $OMITTED_DAYS["{$dinfo['wday']}"];
	}

	//get no of days and times
	$days  = (int) (floor(($enddate - $startdate) / ONE_DAY)) + 1;	// +1 is to include enddate
	$times = $endtime - $starttime;
		
	if($days <= 0) {
		print_error('wrongdatesselected', 'block_autoattend', $wwwMyURL.'?course='.$courseid.'&amp;class='.$classid);
	}
	else if($times <= 0) {
		print_error('wrongtimesselected', 'block_autoattend', $wwwMyURL.'?course='.$courseid.'&amp;class='.$classid);
	}
	else {
		// Getting first day of week
		$sdate = $startdate;
		$dinfo = getdate($sdate);
		if ($CFG->calendar_startwday === 0) { //week start from sunday
			$startweek = mktime(0, 0, 0, $startmonth, $startday-$dinfo['wday'], $startyear);
		}
		else {
			$wday = $dinfo['wday']===0 ? 7 : $dinfo['wday'];
			$startweek = mktime(0, 0, 0, $startmonth, $startday-$wday+1, $startyear);
		}
		
		// Adding sessions
		$sessnum = 0;
		while ($sdate <= $enddate) {
			if($sdate < $startweek + ONE_WEEK) {
				//
				if(in_array(date('D',$sdate), $sdays)) {
					$strtm = $sdate + $starttime;
					$endtm = $sdate + $endtime;
					$param = array('courseid'=>$course->id, 'classid'=>$classid, 'sessdate'=>$sdate, 'starttime'=>$strtm);
					$count = $DB->count_records('autoattend_sessions', $param);
					//
					if ($count!=0) {	
						//check whether this date is in our session days
						notify(strftime(get_string('strftimedmy', 'block_autoattend'), $sdate).': '.get_string('sessionexist','block_autoattend'));
						$sdate += ONE_DAY;
						continue;
					}
					//
					$rec			  = new stdClass();
					$rec->courseid    = $course->id;
					$rec->classid	  = $classid;
					$rec->creator     = $user->id;
					$rec->sessdate    = $sdate;
					$rec->method	  = $method;
					$rec->starttime   = $strtm;
					$rec->endtime     = $endtm;
					$rec->latetime    = $latetime;
					$rec->allowip     = $allowip;
					$rec->description = '';
					$rec->denysameip  = $denysameip;
					$rec->timemodified= time();

					if ($method=='S') {
						if (!$attendkey and $randomkey) {
							$rec->attendkey	= jbxl_randstr(5, true);
						}
						else {
							$rec->attendkey	= $attendkey;
						}
					}
					else {
						$rec->attendkey	= '';
					}

					if ($DB->insert_record('autoattend_sessions', $rec)) {
						$sessnum++;
						//$loginfo = 'start_time='.$strtm.',method='.$method;
						//add_to_log($course->id, 'autoattend', 'add multiply sessions', $wwwMyURL, $loginfo);
					}
					else {
						print_error('erroringeneratingsessions', 'block_autoattend', $wwwMyURL.'?course='.$course->id.'&amp;class='.$classid);
					}
					unset($rec);
				}
				$sdate += ONE_DAY;
			} 
			else {
				$startweek += ONE_WEEK * $period;
				$sdate = $startweek;
			}
		}
		//
		if ($sessnum>0) {
			notice(get_string('sessionsgenerated', 'block_autoattend'), $back2URL.'?course='.$course->id.'&amp;class='.$classid);
		}
		else {
			print_error('sessionsnogenerated', 'block_autoattend', $wwwMyURL.'?course='.$course->id.'&amp;class='.$classid);
		}
	}
}


if($isteacher) { 
	$classes = autoattend_get_session_classes($course->id);
	$nowtime = time();
	include('add_multi.html');
}

echo $OUTPUT->footer($course);