chamilo-lms/main/mySpace/index.php

<?php
/**
 * @todo use constant for $this_section
 */
// name of the language file that needs to be included 
$language_file = array ('registration', 'index','tracking');
$cidReset=true;

require ('../inc/global.inc.php');
require (api_get_path(LIBRARY_PATH).'tracking.lib.php');
require_once(api_get_path(LIBRARY_PATH).'course.lib.php');
require_once(api_get_path(LIBRARY_PATH).'export.lib.inc.php');

ob_start();

$export_csv = isset($_GET['export']) && $_GET['export'] == 'csv' ? true : false;
$csv_content = array();

$nameTools= get_lang("MySpace");
$this_section = "session_my_space";
 
api_block_anonymous_users();
if(!$export_csv)
{
	Display :: display_header($nameTools);
}
 
// Database table definitions
$tbl_user 					= Database :: get_main_table(TABLE_MAIN_USER);
$tbl_course 				= Database :: get_main_table(TABLE_MAIN_COURSE);
$tbl_course_user 			= Database :: get_main_table(TABLE_MAIN_COURSE_USER);
$tbl_class 					= Database :: get_main_table(TABLE_MAIN_CLASS);
$tbl_sessions 				= Database :: get_main_table(TABLE_MAIN_SESSION);
$tbl_session_course 		= Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
$tbl_session_user 			= Database :: get_main_table(TABLE_MAIN_SESSION_USER);
$tbl_session_course_user 	= Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$tbl_admin					= Database :: get_main_table(TABLE_MAIN_ADMIN);


/********************
 * FUNCTIONS
 ********************/
 
function count_teacher_courses()
{
	global $nb_teacher_courses;
	return $nb_teacher_courses;
}



/**************************
 * MAIN CODE
 ***************************/

$isCoach = api_is_coach();

echo '<div align="right">
				<a href="#" onclick="window.print()"><img align="absbottom" src="../img/printmgr.gif">&nbsp;'.get_lang('Print').'</a>
				<a href="'.$_SERVER['PHP_SELF'].'?export=csv"><img align="absbottom" src="../img/excel.gif">&nbsp;'.get_lang('ExportAsCSV').'</a>
			  </div>';

if($isCoach)
{
	
	/****************************************
	 * Infos about students of the coach
	 ****************************************/
	$a_students = Tracking :: get_student_followed_by_coach($_user['user_id']);
	$a_courses = Tracking :: get_courses_followed_by_coach($_user['user_id']);
	$nbStudents = count($a_students);
	
	$totalTimeSpent = 0;
	$totalCourses = 0;
	$avgTotalProgress = 0;
	$avgResultsToExercises = 0;
	$nb_inactive_students = 0;
	$nb_posts = $nb_assignments = 0;
	foreach($a_students as $student_id)
	{
		// inactive students
		if($last_connection_date = Tracking :: get_last_connection_date($student_id))
		{
			list($last_connection_date, $last_connection_hour) = explode(' ',$last_connection_date);
			$last_connection_date = explode('-',$last_connection_date);
			$last_connection_hour = explode(':',$last_connection_hour);
			$last_connection_time = mktime($last_connection_hour[0],$last_connection_hour[1],$last_connection_hour[2],$last_connection_date[1],$last_connection_date[2],$last_connection_date[0]);			
			if(time()-(3600*24*7) > $last_connection_time)
			{
				$nb_inactive_students++;
			}
		}
		else
		{
			$nb_inactive_students++;
		}
		
		$totalTimeSpent += Tracking :: get_time_spent_on_the_platform($student_id);
		$totalCourses += Tracking :: count_course_per_student($student_id);
		$avgStudentProgress = $avgStudentScore = 0;
		$nb_courses_student = 0;
		foreach($a_courses as $course_code)
		{
			if(CourseManager :: is_user_subscribed_in_course($student_id, $course_code, true))
			{
				$nb_courses_student++;
				$nb_posts += Tracking :: count_student_messages($student_id,$course_code);
				$nb_assignments += Tracking :: count_student_assignments($student_id,$course_code);
				$avgStudentProgress += Tracking :: get_avg_student_progress($student_id,$course_code);
				$avgStudentScore += Tracking :: get_avg_student_score($student_id,$course_code);
			}
		}
		// average progress of the student
		$avgStudentProgress = $avgStudentProgress / $nb_courses_student;
		$avgTotalProgress += $avgStudentProgress;
		
		// average test results of the student
		$avgStudentScore = $avgStudentScore / $nb_courses_student;
		$avgResultsToExercises += $avgStudentScore;
		
	}
	// average progress
	$avgTotalProgress = $avgTotalProgress/$nbStudents;
	
	// average results to the tests
	$avgResultsToExercises = $avgResultsToExercises/$nbStudents;
	
	// average courses by student
	$avgCoursesPerStudent = round($totalCourses / $nbStudents,1);
	
	// average time spent on the platform
	$avgTimeSpent = $totalTimeSpent / $nbStudents;
	
	// average assignments
	$nb_assignments = $nb_assignments / $nbStudents;
	
	// average posts
	$nb_posts = $nb_posts / $nbStudents;
	
	
	 
	 //csv part
	 if($export_csv)
	 {
		$csv_content[] = array( get_lang('Probationers'));
		$csv_content[] = array( get_lang('InactivesStudents'),$nb_inactive_students );
		$csv_content[] = array( get_lang('AverageTimeSpentOnThePlatform'),$avgTimeSpent);
		$csv_content[] = array( get_lang('AverageCoursePerStudent'),$avgCoursesPerStudent);
		$csv_content[] = array( get_lang('AverageProgressInLearnpath'),$avgTotalProgress);
		$csv_content[] = array( get_lang('AverageResultsToTheExercices'),$avgResultsToExercises);
		$csv_content[] = array( get_lang('AveragePostsInForum'),$nb_posts);
		$csv_content[] = array( get_lang('AverageAssignments'),$nb_assignments);
		$csv_content[] = array();
	 }
	 // html part
	 else
	 {
		 echo '
		 <div class="admin_section">
			<h4>
				<a href="student.php"><img src="'.api_get_path(WEB_IMG_PATH).'students.gif">&nbsp;'.get_lang('Probationers').' ('.$nbStudents.')'.'</a> 
			</h4>
			<table class="data_table">
				<tr>
					<td>
						'.get_lang('InactivesStudents').'
					</td>
					<td align="right">
						'.$nb_inactive_students.'
					</td>
				</tr>
				<tr>
					<td>
						'.get_lang('AverageTimeSpentOnThePlatform').'
					</td>
					<td align="right">
						'.api_time_to_hms($avgTimeSpent).'
					</td>
				</tr>
				<tr>
					<td>
						'.get_lang('AverageCoursePerStudent').'
					</td>
					<td align="right">
						'.$avgCoursesPerStudent.'
					</td>
				</tr>
				<tr>
					<td>
						'.get_lang('AverageProgressInLearnpath').'
					</td>
					<td align="right">
						'.round($avgTotalProgress,1).' %
					</td>
				</tr>
				<tr>
					<td>
						'.get_lang('AverageResultsToTheExercices').'
					</td>
					<td align="right">
						'.round($avgResultsToExercises,1).' %
					</td>
				</tr>
				<tr>
					<td>
						'.get_lang('AveragePostsInForum').'
					</td>
					<td align="right">
						'.round($nb_posts,1).'
					</td>
				</tr>
				<tr>
					<td>
						'.get_lang('AverageAssignments').'
					</td>
					<td align="right">
						'.round($nb_assignments,1).'
					</td>
				</tr>
			</table>
			<a href="student.php">'.get_lang('SeeStudentList').'</a>
		 </div>';
	 }
	 
	 
	 /****************************************
	 * Infos about sessions of the coach
	 ****************************************/
	$a_sessions = Tracking :: get_sessions_coached_by_user($_user['user_id']);
	$nbSessions = count($a_sessions);
	$nb_sessions_past = $nb_sessions_future = $nb_sessions_current = 0;
	$a_courses = array();
	foreach($a_sessions as $a_session)
	{
		if($a_session['date_start'] == '0000-00-00')
		{
			$nb_sessions_current ++;
		}
		else
		{
			$date_start = explode('-',$session['date_start']);
			$time_start = mktime(0,0,0,$date_start[1],$date_start[2],$date_start[0]);
			
			$date_end = explode('-',$session['date_end']);				
			$time_end = mktime(0,0,0,$date_end[1],$date_end[2],$date_end[0]);			
			if($time_start < time() && time() < $time_end)
			{
				$nb_sessions_current++;
			}
			else if(time() < $time_start)
			{
				$nb_sessions_future++;
			}
			else if(time() > $time_end)
			{
				$nb_sessions_past++;
			}
		}
		$a_courses = array_merge($a_courses, Tracking::get_courses_list_from_session($a_session['id']));		
	}
	$nb_courses_per_session = round(count($a_courses)/$nbSessions,1);
	
	
	 //csv part
	 if($export_csv)
	 {
		$csv_content[] = array( get_lang('Sessions'));
		$csv_content[] = array( get_lang('NbActiveSessions').';'.$nb_sessions_current);
		$csv_content[] = array( get_lang('NbPastSessions').';'.$nb_sessions_past);
		$csv_content[] = array( get_lang('NbFutureSessions').';'.$nb_sessions_future);
		$csv_content[] = array( get_lang('NbStudentPerSession').';'.round($nbStudents/$nbSessions,1));
		$csv_content[] = array( get_lang('NbCoursesPerSession').';'.$nb_courses_per_session);
		$csv_content[] = array();
	 }
	 // html part
	 else
	 {
	
		echo '
		 <div class="admin_section">
			<h4>
				<a href="session.php"><img src="'.api_get_path(WEB_IMG_PATH).'sessions.gif">&nbsp;'.get_lang('Sessions').' ('.$nbSessions.')'.'</a>
			</h4>
			<table class="data_table">
				<tr>
					<td>
						'.get_lang('NbActiveSessions').'
					</td>
					<td align="right">
						'.$nb_sessions_current.'
					</td>
				</tr>
				<tr>
					<td>
						'.get_lang('NbPastSessions').'
					</td>
					<td align="right">
						'.$nb_sessions_past.'
					</td>
				</tr>
				<tr>
					<td>
						'.get_lang('NbFutureSessions').'
					</td>
					<td align="right">
						'.$nb_sessions_future.'
					</td>
				</tr>
				<tr>
					<td>
						'.get_lang('NbStudentPerSession').'
					</td>
					<td align="right">
						'.round($nbStudents/$nbSessions,1).'
					</td>
				</tr>
				<tr>
					<td>
						'.get_lang('NbCoursesPerSession').'
					</td>
					<td align="right">
						'.$nb_courses_per_session.'
					</td>
				</tr>
			</table>
			<a href="session.php">'.get_lang('SeeSessionList').'</a>
		 </div>';
	 }
	 
	 
}

echo '<div class="clear">&nbsp;</div>';

$sqlNbCours = "	SELECT course_rel_user.course_code, course.title
				FROM $tbl_course_user as course_rel_user
				INNER JOIN $tbl_course as course
					ON course.code = course_rel_user.course_code
			  	WHERE course_rel_user.user_id='".$_user['user_id']."' AND course_rel_user.status='1'
			  ";
$resultNbCours = api_sql_query($sqlNbCours, __FILE__, __LINE__);
$a_courses = api_store_result($resultNbCours);
$nb_teacher_courses = count($a_courses);

if($nb_teacher_courses)
{
	
			  
	$table = new SortableTable('tracking_list_course', 'count_teacher_courses');
	$table -> set_header(0, get_lang('CourseTitle'), false);
	$table -> set_header(1, get_lang('NbStudents'), false);
	$table -> set_header(2, get_lang('TimeSpentInTheCourse'), false);
	$table -> set_header(3, get_lang('AvgStudentsProgress'), false);
	$table -> set_header(4, get_lang('AvgStudentsScore'), false);
	$table -> set_header(5, get_lang('AvgMessages'), false);
	$table -> set_header(6, get_lang('AvgAssignments'), false);
	$table -> set_header(7, get_lang('Details'), false);
	
	$csv_content[] = array(
					get_lang('CourseTitle'),
					get_lang('NbStudents'),
					get_lang('TimeSpentInTheCourse'),
					get_lang('AvgStudentsProgress'),
					get_lang('AvgStudentsScore'),
					get_lang('AvgMessages'),
					get_lang('AvgAssignments')
					);
			
	$a_students = array();
	
	foreach($a_courses as $course)
	{
		
		$course_code = $course['course_code'];
		
		$avg_assignments_in_course = $avg_messages_in_course = $nb_students_in_course = $avg_progress_in_course = $avg_score_in_course = $avg_time_spent_in_course = 0;
		
		// students directly subscribed to the course
		$sql = "SELECT user.user_id FROM $tbl_course_user as course_rel_user WHERE course_rel_user.status='5' AND course_rel_user.course_code='$course_code'";
		$rs = api_sql_query($sql);		
		while($row = mysql_fetch_array($rs))
		{
			$nb_students_in_course++;
			
			// tracking datas
			$avg_progress_in_course += Tracking :: get_avg_student_progress ($row['user_id'], $course_code);
			$avg_score_in_course += Tracking :: get_avg_student_score ($row['user_id'], $course_code);
			$avg_time_spent_in_course += Tracking :: get_time_spent_on_the_course ($row['user_id'], $course_code);
			$a_students[] = $row['user_id'];
		}
		
		// students subscribed to the course throw a session
		if(api_get_setting('use_session_mode') == 'true')
		{
			$sql = 'SELECT id_user as user_id
					FROM '.$tbl_session_course_user.'
					WHERE course_code="'.addslashes($course_code).'"';
			$rs = api_sql_query($sql, __FILE__, __LINE__);
			while($row = mysql_fetch_array($rs))
			{
				if(!in_array($row['user_id'], $a_students))
				{
					$nb_students_in_course++;
					
					// tracking datas
					$avg_progress_in_course += Tracking :: get_avg_student_progress ($row['user_id'], $course_code);
					$avg_score_in_course += Tracking :: get_avg_student_score ($row['user_id'], $course_code);
					$avg_time_spent_in_course += Tracking :: get_time_spent_on_the_course ($row['user_id'], $course_code);
					$avg_messages_in_course += Tracking :: count_student_messages ($row['user_id'], $course_code);
					$avg_assignments_in_course += Tracking :: count_student_assignments ($row['user_id'], $course_code);
					$a_students[] = $row['user_id'];
				}
			}
		}
		
		$avg_time_spent_in_course = api_time_to_hms($avg_time_spent_in_course / $nb_students_in_course);
		$avg_progress_in_course = round($avg_progress_in_course / $nb_students_in_course,1).' %';
		$avg_score_in_course = round($avg_score_in_course / $nb_students_in_course,1).' %';
		$avg_messages_in_course = round($avg_messages_in_course / $nb_students_in_course,1);
		$avg_assignments_in_course = round($avg_assignments_in_course / $nb_students_in_course,1);
		
		$table_row = array();
		$table_row[] = $course['title'];
		$table_row[] = $nb_students_in_course;
		$table_row[] = $avg_time_spent_in_course;
		$table_row[] = $avg_progress_in_course;
		$table_row[] = $avg_score_in_course;
		$table_row[] = $avg_messages_in_course;
		$table_row[] = $avg_assignments_in_course;
		$table_row[] = '<a href="../tracking/courseLog.php?cidReq='.$course_code.'"><img src="'.api_get_path(WEB_IMG_PATH).'2rightarrow.gif" border="0" /></a>';
		
		$csv_content[] = array(
							$course['title'],
							$nb_students_in_course,
							$avg_time_spent_in_course,
							$avg_progress_in_course,
							$avg_score_in_course,
							$avg_messages_in_course,
							$avg_assignments_in_course,
							);
		
		$table -> addRow($table_row, 'align="right"');
		
	}
	$table -> setColAttributes(7,array('align'=>'center'));
	$table -> display();
		
}


// send the csv file if asked
if($export_csv)
{
	ob_end_clean();
	Export :: export_table_csv($csv_content, 'reporting_index');
}
 
 /*
 ==============================================================================
		FOOTER
 ==============================================================================
 */
if(!$export_csv)
{
	Display::display_footer();
}
?>