'; print_r($main_date);
		
		// the nice graphics :D
		$labels = array_keys($main_date);	
		if (count($main_date)==1) {
			$labels = $labels[0];
			$main_date = $main_date[$labels];
		}
		
		$DataSet = new pData;	
		$DataSet->AddPoint($main_date,'Q');
		if (count($main_date)!=1) {
			$DataSet->AddPoint($labels,'Date');
		}
		$DataSet->AddAllSeries();  
		$DataSet->RemoveSerie('Date');  
		$DataSet->SetAbsciseLabelSerie('Date');
		$DataSet->SetYAxisName(api_ucfirst(get_lang('MinMinutes')));  
		$graph_id = api_get_user_id().'AccessDetails'.api_get_course_id();
		$DataSet->AddAllSeries();
		
		$Cache = new pCache();
		// the graph id
		$data = $DataSet->GetData();
		
		if ($Cache->IsInCache($graph_id, $DataSet->GetData())) {
		//if (0) {
			//if we already created the img
			//	echo 'in cache';
			$img_file = $Cache->GetHash($graph_id,$DataSet->GetData());			
		} else  {		  
		// if the image does not exist in the archive/ folder		
			// Initialise the graph  
			$Test = new pChart(760,230);
			 
			//which schema of color will be used
			$quant_resources = count($data[0])-1;					
			// Adding the color schemma
			$Test->loadColorPalette(api_get_path(LIBRARY_PATH)."pchart/palette/default.txt");
									
		  	$Test->setFontProperties(api_get_path(LIBRARY_PATH)."pchart/fonts/tahoma.ttf",8);     
		  	$Test->setGraphArea(70,30,680,200);     
		  	$Test->drawFilledRoundedRectangle(7,7,693,223,5,240,240,240);     
		  	$Test->drawRoundedRectangle(5,5,695,225,5,230,230,230);     
		  	$Test->drawGraphArea(255,255,255,TRUE);  
		  	$Test->drawScale($DataSet->GetData(),$DataSet->GetDataDescription(),SCALE_START0,150,150,150,TRUE,0,0);     
		  	$Test->drawGrid(4,TRUE,230,230,230,50);  
		    $Test->setLineStyle(2); 
			// Draw the 0 line     
			$Test->setFontProperties(api_get_path(LIBRARY_PATH)."pchart/fonts/tahoma.ttf",6);     
			$Test->drawTreshold(0,143,55,72,TRUE,TRUE);
			
		  	if (count($main_date)==1) {
				//Draw a graph 
				echo ''.$labels.'
';			
	  			$Test->drawBarGraph($DataSet->GetData(),$DataSet->GetDataDescription(),TRUE);
		  	} else {
				//Draw the line graph  
				$Test->drawLineGraph($DataSet->GetData(),$DataSet->GetDataDescription());     
				$Test->drawPlotGraph($DataSet->GetData(),$DataSet->GetDataDescription(),3,2,255,255,255);
	 		}
		  
			// Finish the graph     
			$Test->setFontProperties(api_get_path(LIBRARY_PATH)."pchart/fonts/tahoma.ttf",8);     
			       
			$Test->setFontProperties(api_get_path(LIBRARY_PATH)."pchart/fonts/tahoma.ttf",10);     
			$Test->drawTitle(60,22,get_lang('AccessDetails'),50,50,50,585);    
			
			//------------------						
			//echo 'not in cache';			
			$Cache->WriteToCache($graph_id,$DataSet->GetData(),$Test);						
			ob_start();
			$Test->Stroke();
			ob_end_clean();				
			$img_file = $Cache->GetHash($graph_id,$DataSet->GetData());		
		}
		echo '';
	} else {
		Display::display_warning_message (get_lang('GraphicNotAvailable'));
	}
	exit;
}

$nameTools= get_lang('AccessDetails');

//StudentDetails
if (isset($_GET['origin']) && strcmp($_GET['origin'],'tracking_course')===0) {
	$interbreadcrumb[] = array ("url" => "../tracking/courseLog.php?cidReq=".Security::remove_XSS($_GET['course'])."&studentlist=true&id_session=".api_get_session_id(), "name" => get_lang("Tracking"));
	$interbreadcrumb[] = array ("url" => "myStudents.php?student=".Security::remove_XSS($_GET['student'])."&details=true&origin=".Security::remove_XSS($_GET['origin'])."&course=".Security::remove_XSS($_GET['course']).'&cidReq='.Security::remove_XSS($_GET['course']), "name" => get_lang('DetailsStudentInCourse'));
	$interbreadcrumb[] = array ("url" => "#", "name" => get_lang("Details"));
} elseif (isset($_GET['origin']) && strcmp($_GET['origin'],'user_course')===0) {
	$interbreadcrumb[] = array ("url" => "../user/user.php?cidReq=".Security::remove_XSS($_GET['course']), "name" => get_lang("Users"));
	$interbreadcrumb[] = array ("url" => "myStudents.php?student=".Security::remove_XSS($_GET['student'])."&details=true&origin=".Security::remove_XSS($_GET['origin'])."&course=".Security::remove_XSS($_GET['course']).'&cidReq='.Security::remove_XSS($_GET['course']), "name" => get_lang('DetailsStudentInCourse'));
	$interbreadcrumb[] = array ("url" => "#", "name" => get_lang("Details"));
}

$htmlHeadXtra[] = ''; //jQuery
$htmlHeadXtra[] = '';
$htmlHeadXtra[] = '';
$htmlHeadXtra[] = '';
$htmlHeadXtra[] = '';

$htmlHeadXtra[] = ''  ;

Display :: display_header('');
$TBL_USERINFO_DEF 	= Database :: get_course_table(TABLE_USER_INFO);
$mainUserInfo 		= api_get_user_info($user_id);

$result_to_print = '';
$main_date_array = array();

foreach ($connections as $key=>$data) { 
	$result_to_print .= '  '.date('d-m-Y (H:i:s)',$data['login']).' - '.calculHours($data['logout']-$data['login']).'
'."\n";	
}
api_display_tool_title(get_lang('DetailsStudentInCourse'));
echo '
';
echo ''.get_lang('User').': '.$mainUserInfo['firstName'].' '.$mainUserInfo['lastName'].'     '.get_lang('Course').': '.$course_code.'
';

?>

    
                
        
 
        

    
    
';?>


';
echo '
',get_lang('DateAndTimeOfAccess'),' - ',get_lang('Duration'),'

';
echo $result_to_print;

/* Login time against logout time
foreach ($connections as $key=>$data)
{
    echo ("".date("d-m-Y (H:i:s)",$data['login'])."".date("d-m-Y (H:i:s)",$data['logout']).""); 
}
*/
/*
foreach ($connections as $key=>$data)
{
    echo ("".date("d-m-Y (H:i:s)",$data['login'])."".calculHours($data['logout']-$data['login']).""); 
}
echo ("");
*/
Display:: display_footer();


/*
-----------------------------------------------------------
	Functions
-----------------------------------------------------------
*/

/**
 * Gets the connections to a course as an array of login and logout time
 *
 * @param unknown_type $user_id
 * @param unknown_type $course_code
 * @return unknown
 */
function get_connections_to_course($user_id, $course_code) {
	// Database table definitions
    $tbl_track_course 	= Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
    $tbl_main			= Database :: get_main_table(TABLE_MAIN_COURSE);
    
    $sql_query='SELECT visual_code as course_code FROM '.$tbl_main.' c WHERE code="'.Database::escape_string($course_code).'";';
    $result=api_sql_query($sql_query,__FILE__,__LINE__);
    $row_query=Database::fetch_array($result,'ASSOC');
    $course_true=isset($row_query['course_code']) ? $row_query['course_code']: $course_code;

    $sql = 'SELECT login_course_date, logout_course_date FROM ' . $tbl_track_course . ' 
    				WHERE user_id = ' . intval($user_id) . '
    				AND course_code="' . Database::escape_string($course_true) . '" ORDER BY login_course_date ASC';

    $rs = api_sql_query($sql);
    $connections  = array();
    
    while ($a_connections = Database::fetch_array($rs)) {
    
        $s_login_date = $a_connections['login_course_date'];
        $s_logout_date = $a_connections['logout_course_date'];
        
        $i_timestamp_login_date = strtotime($s_login_date);
        $i_timestamp_logout_date = strtotime($s_logout_date);
        
        $connections[] = array('login'=>$i_timestamp_login_date, 'logout'=>$i_timestamp_logout_date);
        
    }
    
    return $connections;
}

/**
 * Enter description here...
 *
 * @param unknown_type $user_id
 * @param unknown_type $course_code
 * @param unknown_type $year
 * @param unknown_type $month
 * @param unknown_type $day
 * @return unknown
 */
function get_connections_to_course_by_time($user_id, $course_code, $year='', $month='', $day='') {
	// Database table definitions
    $tbl_track_course 		= Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
    $tbl_main				= Database :: get_main_table(TABLE_MAIN_COURSE);
    
    $sql_query='SELECT visual_code as course_code FROM '.$tbl_main.' c WHERE code="'.Database :: escape_string($course_code).'";';
    $result=api_sql_query($sql_query,__FILE__,__LINE__);
    $row_query=Database::fetch_array($result,'ASSOC');
    $course_true=isset($row_query['course_code']) ? $row_query['course_code']: $course_code;

    $sql = 'SELECT login_course_date, logout_course_date FROM ' . $tbl_track_course . ' 
    				WHERE user_id = ' . intval($user_id) . '
    				AND course_code="' . Database::escape_string($course_true) . '"    				 
    				ORDER BY login_course_date DESC';
    
    $rs = api_sql_query($sql);
    $connections  = array();    
    while ($a_connections = Database::fetch_array($rs)) {    
        $s_login_date 				= $a_connections['login_course_date'];
        $s_logout_date 				= $a_connections['logout_course_date'];        
        $i_timestamp_login_date 	= strtotime($s_login_date);
        $i_timestamp_logout_date 	= strtotime($s_logout_date);        
        $connections[] = array('login'=>$i_timestamp_login_date, 'logout'=>$i_timestamp_logout_date);        
    }    
    return $connections;
}

	
/**
 * Transforms seconds into a time format
 *
 * @param unknown_type $seconds
 * @return unknown
 */
function calculHours($seconds)
{	
  //How many hours ?
  $hours = floor($seconds / 3600);

  //How many minutes ?
  $min = floor(($seconds - ($hours * 3600)) / 60);
  if ($min < 10)
    $min = '0'.$min;

  //How many seconds
  $sec = $seconds - ($hours * 3600) - ($min * 60);
  if ($sec < 10)
    $sec = '0'.$sec;

  return $hours.get_lang('HourShort').' '.$min.':'.$sec;

}
?>