<?php // $Id: course_edit.php 19261 2009-03-25 00:10:44Z cvargas1 $
/* For licensing terms, see /dokeos_license.txt */
/**
==============================================================================
*	@package dokeos.admin
==============================================================================
*/
/*
==============================================================================
		INIT SECTION
==============================================================================
*/

// name of the language file that needs to be included 
$language_file = 'admin';
$cidReset = true;
include ('../inc/global.inc.php');
$this_section=SECTION_PLATFORM_ADMIN;

api_protect_admin_script();
include (api_get_path(LIBRARY_PATH).'fileManage.lib.php');
require_once (api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php');
require_once (api_get_path(LIBRARY_PATH).'course.lib.php');
$course_table = Database::get_main_table(TABLE_MAIN_COURSE);
$course_user_table = Database::get_main_table(TABLE_MAIN_COURSE_USER);
$course_code = isset($_GET['course_code']) ? $_GET['course_code'] : $_POST['code'];
$noPHP_SELF = true;
$tool_name = get_lang('ModifyCourseInfo');
$interbreadcrumb[] = array ("url" => 'index.php', "name" => get_lang('PlatformAdmin'));
$interbreadcrumb[] = array ("url" => "course_list.php", "name" => get_lang('AdminCourses'));

/*
-----------------------------------------------------------
	Libraries
-----------------------------------------------------------
*/
/*
==============================================================================
		FUNCTIONS
==============================================================================
*/

/*
==============================================================================
		MAIN CODE
==============================================================================
*/
// Get all course categories
$table_user = Database :: get_main_table(TABLE_MAIN_USER);


//Get the course infos
$sql = "SELECT * FROM $course_table WHERE code='".Database::escape_string($course_code)."'";
$result = api_sql_query($sql, __FILE__, __LINE__);
if (Database::num_rows($result) != 1)
{
	header('Location: course_list.php');
	exit ();
}
$course = Database::fetch_array($result,'ASSOC');

// Get course teachers
$table_course_user = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
$sql = "SELECT user.user_id,lastname,firstname FROM $table_user as user,$table_course_user as course_user WHERE course_user.status='1' AND course_user.user_id=user.user_id AND course_user.course_code='".$course_code."' ORDER BY lastname,firstname";
$res = api_sql_query($sql,__FILE__,__LINE__);
$course_teachers = array();
while($obj = Database::fetch_object($res))
{
		$course_teachers[$obj->user_id] = $obj->lastname.' '.$obj->firstname;
}

// Get all possible teachers without the course teachers
$sql = "SELECT user_id,lastname,firstname FROM $table_user WHERE status='1' ORDER BY lastname,firstname";
$res = api_sql_query($sql,__FILE__,__LINE__);
$teachers = array();

$platform_teachers[0] = '-- '.get_lang('NoManager').' --';
while($obj = Database::fetch_object($res))
{		
	if(!array_key_exists($obj->user_id,$course_teachers)){
		$teachers[$obj->user_id] = $obj->lastname.' '.$obj->firstname;
	}
	

	if($course['tutor_name']==$course_teachers[$obj->user_id]){
		$course['tutor_name']=$obj->user_id;
	}
	//We add in the array platform teachers 
	$platform_teachers[$obj->user_id] = $obj->lastname.' '.$obj->firstname;
}

//Case where there is no teacher in the course
if(count($course_teachers)==0){
	$sql='SELECT tutor_name FROM '.$course_table.' WHERE code="'.$course_code.'"';
	$res = api_sql_query($sql,__FILE__,__LINE__);
	$tutor_name=Database::result($res,0,0);
	$course['tutor_name']=array_search($tutor_name,$platform_teachers);
}

// Build the form
$form = new FormValidator('update_course');
$form->addElement('hidden','code',$course_code);
$form->add_textfield('visual_code', get_lang('CourseCode'));
$form->applyFilter('visual_code','strtoupper');
//$form->add_textfield('tutor_name', get_lang('CourseTitular'));
$form->addElement('select', 'tutor_name', get_lang('CourseTitular'), $platform_teachers);
//$form->addElement('select', 'course_teachers', get_lang('CourseTeachers'), $teachers, 'multiple=multiple size="4" style="width: 150px;"');

$group=array();
$group[] = FormValidator::createElement('select', 'platform_teachers', '', $teachers, 'id="platform_teachers" multiple=multiple size="4" style="width: 150px;"');
$group[] = FormValidator::createElement('select', 'course_teachers', '', $course_teachers, 'id="course_teachers" multiple=multiple size="4" style="width: 150px;"');

$element_template = <<<EOT
	<div class="row">
		<div class="label">
			<!-- BEGIN required --><span class="form_required">*</span> <!-- END required -->{label}
		</div>
		<div class="formw" style="display:inline">
			<table cellpadding="0" cellspacing="0">
				<tr>
					<!-- BEGIN error --><span class="form_error">{error}</span><br /><!-- END error -->	<td>{element}</td>
				</tr>
			</table>
		</div>
	</div>
EOT;
	
$renderer = $form->defaultRenderer();
$renderer -> setElementTemplate($element_template, 'group');
$form -> addGroup($group,'group',get_lang('CourseTeachers'),'</td><td width="50" align="center"><input type="button" onclick="moveItem(document.getElementById(\'platform_teachers\'), document.getElementById(\'course_teachers\'))" value=">>"><br><br><input type="button" onclick="moveItem(document.getElementById(\'course_teachers\'), document.getElementById(\'platform_teachers\'))" value="<<"></td><td>');

$form->add_textfield( 'title', get_lang('Title'),true, array ('size' => '60'));
$categories_select = $form->addElement('select', 'category_code', get_lang('CourseFaculty'), $categories);
CourseManager::select_and_sort_categories($categories_select);
$form->add_textfield( 'department_name', get_lang('CourseDepartment'), false,array ('size' => '60'));
$form->add_textfield( 'department_url', get_lang('CourseDepartmentURL'),false, array ('size' => '60'));
$form->addElement('select_language', 'course_language', get_lang('CourseLanguage'));
$form->addElement('radio', 'visibility', get_lang("CourseAccess"), get_lang('OpenToTheWorld'), COURSE_VISIBILITY_OPEN_WORLD);
$form->addElement('radio', 'visibility', null, get_lang('OpenToThePlatform'), COURSE_VISIBILITY_OPEN_PLATFORM);
$form->addElement('radio', 'visibility', null, get_lang('Private'), COURSE_VISIBILITY_REGISTERED);
$form->addElement('radio', 'visibility', null, get_lang('CourseVisibilityClosed'), COURSE_VISIBILITY_CLOSED);
$form->addElement('radio', 'subscribe', get_lang('Subscription'), get_lang('Allowed'), 1);
$form->addElement('radio', 'subscribe', null, get_lang('Denied'), 0);
$form->addElement('radio', 'unsubscribe', get_lang('Unsubscription'), get_lang('AllowedToUnsubscribe'), 1);
$form->addElement('radio', 'unsubscribe', null, get_lang('NotAllowedToUnsubscribe'), 0);
$form->addElement('text','disk_quota',get_lang('CourseQuota'));
$form->addRule('disk_quota', get_lang('ThisFieldIsRequired'),'required');
$form->addRule('disk_quota',get_lang('ThisFieldShouldBeNumeric'),'numeric');
$form->addElement('style_submit_button', 'button', get_lang('ModifyCourseInfo'),'onclick="valide()"; class="search"');
// Set some default values

$course_db_name = $course['db_name'];
$course['title']=html_entity_decode($course['title'],ENT_QUOTES,$charset);
$form->setDefaults($course);
// Validate form
if( $form->validate())
{
	$course = $form->getSubmitValues();
	$dbName = $_POST['dbName'];
	$course_code = $course['code'];
	$visual_code = $course['visual_code'];
    
    // Check if the visual code is already used by *another* course
    $visual_code_is_used = false;
    error_log($visual_code);
    $warn = get_lang('TheFollowingCoursesAlreadyUseThisVisualCode').':';
    if (!empty($visual_code)) {
        $list = CourseManager::get_courses_info_from_visual_code($visual_code);
        foreach ($list as $course_temp) {
            error_log($course_temp['code']);
        	if ($course_temp['code'] != $course_code) {
        	   $visual_code_is_used = true;
               $warn .= ' '.$course_temp['title'].' ('.$course_temp['code'].'),';
            }
        }
        $warn = substr($warn,0,-1);
    }
	
	$tutor_id = $course['tutor_name'];
	$tutor_name=$platform_teachers[$tutor_id];
	
	$teachers = $course['group']['course_teachers'];
	
	$title = $course['title'];
	$category_code = $course['category_code'];
	$department_name = $course['department_name'];
	$department_url = $course['department_url'];
	$course_language = $course['course_language'];
	$disk_quota = $course['disk_quota'];
	$visibility = $course['visibility'];
	$subscribe = $course['subscribe'];
	$unsubscribe = $course['unsubscribe'];
	if (!stristr($department_url, 'http://'))
	{
		$department_url = 'http://'.$department_url;
	}
	$sql = "UPDATE $course_table SET course_language='".Database::escape_string($course_language)."',
								title='".Database::escape_string($title)."',
								category_code='".Database::escape_string($category_code)."',
								tutor_name='".Database::escape_string($tutor_name)."',
								visual_code='".Database::escape_string($visual_code)."',
								department_name='".Database::escape_string($department_name)."',
								department_url='".Database::escape_string($department_url)."',
								disk_quota='".Database::escape_string($disk_quota)."',
								visibility = '".Database::escape_string($visibility)."', 
								subscribe = '".Database::escape_string($subscribe)."',
								unsubscribe='".Database::escape_string($unsubscribe)."'
							WHERE code='".Database::escape_string($course_code)."'";
	api_sql_query($sql, __FILE__, __LINE__);
	
	//Delete only teacher relations that doesn't match the selected teachers
	$cond='';
	if(count($teachers)>0){
		foreach($teachers as $key) $cond.=" AND user_id<>'".$key."'";
	}	
	$sql='DELETE FROM '.$course_user_table.' WHERE course_code="'.Database::escape_string($course_code).'" AND status="1"'.$cond;
	api_sql_query($sql, __FILE__, __LINE__);
	
	if(count($teachers)>0){
		foreach($teachers as $key){
			
			//We check if the teacher is already subscribed in this course 
			$sql_select_teacher = 'SELECT 1 FROM '.$course_user_table.' WHERE user_id = "'.$key.'" AND course_code = "'.$course_code.'"';
			$result = api_sql_query($sql_select_teacher, __FILE__, __LINE__);
			
			if(Database::num_rows($result) == 1){
				$sql = 'UPDATE '.$course_user_table.' SET status = "1" WHERE course_code = "'.$course_code.'" AND user_id = "'.$key.'"';
			}
			else{
				$sql = "INSERT INTO ".$course_user_table . " SET
					course_code = '".Database::escape_string($course_code). "',
					user_id = '".$key . "',
					status = '1',
					role = '',
					tutor_id='0',
					sort='0',
					user_course_cat='0'";
			}
			api_sql_query($sql, __FILE__, __LINE__);
			
		}
		
	}
	
	$sql = "INSERT IGNORE INTO ".$course_user_table . " SET
				course_code = '".Database::escape_string($course_code). "',
				user_id = '".$tutor_id . "',
				status = '1',
				role = '',
				tutor_id='0',
				sort='0',
				user_course_cat='0'";
	api_sql_query($sql, __FILE__, __LINE__);
	
	$forum_config_table = Database::get_course_table(TOOL_FORUM_CONFIG_TABLE,$course_db_name);
	$sql = "UPDATE ".$forum_config_table." SET default_lang='".Database::escape_string($course_language)."'";
	if ($visual_code_is_used == true) {
	    header('Location: course_list.php?action=show_msg&warn='.urlencode($warn));	
	} else {
        header('Location: course_list.php');
	}
	exit ();
}
Display::display_header($tool_name);

echo "<script>
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('course_teachers').options;
	for (i = 0 ; i<options.length ; i++)
		options[i].selected = true;
	document.update_course.submit();
}
</script>";
//api_display_tool_title($tool_name);
// Display the form
$form->display();
/*
==============================================================================
		FOOTER 
==============================================================================
*/
Display :: display_footer();
?>