<?php
/*
==============================================================================
	Dokeos - elearning and course management software

	Copyright (c) 2004 Dokeos S.A.
	Copyright (c) 2003 University of Ghent (UGent)
	Copyright (c) 2001 Universite catholique de Louvain (UCL)
	Copyright (c) Olivier Brouckaert

	For a full list of contributors, see "credits.txt".
	The full license can be read in "license.txt".

	This program is free software; you can redistribute it 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.

	See the GNU General Public License for more details.

	Contact: Dokeos, 181 rue Royale, B-1000 Brussels, Belgium, info@dokeos.com
==============================================================================
*/
/**
==============================================================================
*	@package dokeos.admin
==============================================================================
*/

// name of the language file that needs to be included 
$language_file='admin';

// resetting the course id
$cidReset=true;

// including some necessary dokeos files
require('../inc/global.inc.php');

// setting the section (for the tabs)
$this_section = SECTION_PLATFORM_ADMIN;

// Access restrictions
api_protect_admin_script();

// setting breadcrumbs
$interbreadcrumb[] = array('url' => 'index.php', 'name' => get_lang('PlatformAdmin'));
$interbreadcrumb[] = array('url' => 'session_list.php','name' => get_lang('SessionList'));

// Database Table Definitions
$tbl_session_rel_course_rel_user	= Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$tbl_session						= Database::get_main_table(TABLE_MAIN_SESSION);
$tbl_session_rel_user				= Database::get_main_table(TABLE_MAIN_SESSION_USER);
$tbl_session_rel_course				= Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
$tbl_course							= Database::get_main_table(TABLE_MAIN_COURSE);

// setting the name of the tool
$tool_name= get_lang('SubscribeCoursesToSession');

$id_session=intval($_GET['id_session']);

$formSent=0;
$errorMsg=$firstLetterCourse=$firstLetterSession='';
$CourseList=$SessionList=array();
$courses=$sessions=array();
$noPHP_SELF=true;





if($_POST['formSent'])
{
	$formSent=$_POST['formSent'];
	$firstLetterCourse=$_POST['firstLetterCourse'];
	$firstLetterSession=$_POST['firstLetterSession'];
	$CourseList=$_POST['SessionCoursesList'];
	if(!is_array($CourseList))
	{
		$CourseList=array();
	}
	$nbr_courses=0;	
	
	$id_coach = api_sql_query("SELECT id_coach FROM $tbl_session WHERE id=$id_session");
	$id_coach = mysql_fetch_array($id_coach);
	$id_coach = $id_coach[0];
	
	$rs = api_sql_query("SELECT course_code FROM $tbl_session_rel_course WHERE id_session=$id_session");
	$existingCourses = api_store_result($rs);				
	
	$sql="SELECT id_user
		FROM $tbl_session_rel_user
		WHERE id_session = $id_session";
	$result=api_sql_query($sql,__FILE__,__LINE__);
	
	$UserList=api_store_result($result);
	
	
	foreach($CourseList as $enreg_course)
	{
		$exists = false;
		foreach($existingCourses as $existingCourse)
		{
			if($enreg_course == $existingCourse['course_code'])
			{
				$exists=true;
			}
		}		
		if(!$exists)
		{				
			api_sql_query("INSERT INTO $tbl_session_rel_course(id_session,course_code, id_coach) VALUES('$id_session','$enreg_course','$id_coach')",__FILE__,__LINE__);
			
			
			$nbr_users=0;
			foreach($UserList as $enreg_user)
			{
				$enreg_user = $enreg_user['id_user'];
				api_sql_query("INSERT IGNORE INTO $tbl_session_rel_course_rel_user(id_session,course_code,id_user) VALUES('$id_session','$enreg_course','$enreg_user')",__FILE__,__LINE__);
				
				if(mysql_affected_rows())
				{
					$nbr_users++;
				}
			}
			api_sql_query("UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'",__FILE__,__LINE__);
		}
		
	}
	
	foreach($existingCourses as $existingCourse) {
		if(!in_array($existingCourse['course_code'], $CourseList)){
			api_sql_query("DELETE FROM $tbl_session_rel_course WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
			api_sql_query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
			
		}
	}
	$nbr_courses=count($CourseList);
	api_sql_query("UPDATE $tbl_session SET nbr_courses=$nbr_courses WHERE id='$id_session'",__FILE__,__LINE__);

	if(isset($_GET['add']))
		header('Location: add_users_to_session.php?id_session='.$id_session.'&add=true');
	else 
		header('Location: resume_session.php?id_session='.$id_session);
		//header('Location: '.$_GET['page'].'?id_session='.$id_session);
	
		
	
	
}

Display::display_header($tool_name);

api_display_tool_title($tool_name);


$sql="SELECT code, title, visual_code, id_session
		FROM $tbl_course 
		LEFT JOIN $tbl_session_rel_course
			ON code = course_code
		ORDER BY ".(sizeof($courses)?"(code IN(".implode(',',$courses).")) DESC,":"")." title";

$result=api_sql_query($sql,__FILE__,__LINE__);

$Courses=api_store_result($result);
$nosessionCourses = $sessionCourses = array();


foreach($Courses as $course)
	if($course['id_session'] == $id_session) 
		$sessionCourses[$course['code']] = $course ;
				
foreach($Courses as $course)
	if(empty($sessionCourses[$course['code']]) && empty($nosessionCourses[$course['code']]))
		$nosessionCourses[$course['code']] = $course ;
		
		
unset($Courses);
?>

<form name="formulaire" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>?page=<?php echo $_GET['page'] ?>&id_session=<?php echo $id_session; ?><?php if(!empty($_GET['add'])) echo '&add=true' ; ?>" style="margin:0px;">
<input type="hidden" name="formSent" value="1" />

<?php
if(!empty($errorMsg))
{
	Display::display_normal_message($errorMsg); //main API
}
?>

<table border="0" cellpadding="5" cellspacing="0" width="100%" align="center">
<tr>
  <td width="45%" align="center"><b><?php echo get_lang('CourseListInPlatform') ?> :</b></td>
  
  <td width="10%">&nbsp;</td>
  <td align="center" width="45%"><b><?php echo get_lang('CourseListInSession') ?> :</b></td>
</tr>
<tr>
  <td width="45%" align="center"><select id="origin" name="NoSessionCoursesList[]" multiple="multiple" size="20" style="width:300px;">

<?php
foreach($nosessionCourses as $enreg)
{
?>

	<option value="<?php echo $enreg['code']; ?>" <?php if(in_array($enreg['code'],$CourseList)) echo 'selected="selected"'; ?>><?php echo $enreg['title'].' ('.$enreg['visual_code'].')'; ?></option>

<?php
}

unset($nosessionCourses);
?>

  </select></td>
  <td width="10%" valign="middle" align="center">
	<input type="button" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))" value=">>" />
	<br /><br />
	<input type="button" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))" value="<<" />
	<br /><br /><br /><br /><br /><br />
	<?php
	if(isset($_GET['add']))
	{
		echo '<input type="button" value="'.get_lang('NextStep').'" onclick="valide()" />';
	}
	else
	{
		echo '<input type="button" value="'.get_lang('Ok').'" onclick="valide()" />';
	}
	?>
  </td>
  <td width="45%" align="center"><select id='destination' name="SessionCoursesList[]" multiple="multiple" size="20" style="width:300px;">

<?php
foreach($sessionCourses as $enreg)
{
?>

	<option value="<?php echo $enreg['code']; ?>"><?php echo $enreg['title'].' ('.$enreg['visual_code'].')'; ?></option>

<?php
}

unset($sessionCourses);
?>

  </select></td>
</tr>
</table>

</form>
<script type="text/javascript">
<!--
function moveItem(origin , destination){
	
	for(var i = 0 ; i<origin.options.length ; i++) {
		if(origin.options[i].selected) {	
			destination.options[destination.length] = new Option(origin.options[i].text,origin.options[i].value);
			origin.options[i]=null;	
			i = i-1;
		}
	}
	destination.selectedIndex = -1;
	sortOptions(destination.options);
	
}

function sortOptions(options) { 

	newOptions = new Array();
	for (i = 0 ; i<options.length ; i++)
		newOptions[i] = options[i];
		
	newOptions = newOptions.sort(mysort);	
	options.length = 0;
	for(i = 0 ; i < newOptions.length ; i++)
		options[i] = newOptions[i];
	
}

function mysort(a, b){
	if(a.text.toLowerCase() > b.text.toLowerCase()){
		return 1;
	}
	if(a.text.toLowerCase() < b.text.toLowerCase()){
		return -1;
	}
	return 0;
}

function valide(){
	var options = document.getElementById('destination').options;
	for (i = 0 ; i<options.length ; i++)
		options[i].selected = true;
		
	document.forms.formulaire.submit();
}
-->

</script>
<?php
/*
==============================================================================
		FOOTER
==============================================================================
*/
Display::display_footer();
?>