<?php
/* For licensing terms, see /license.txt */
/**
*	Exercise list: This script shows the list of exercises for administrators and students.
*	@package chamilo.exercise
*	@author Olivier Brouckaert, original author
*	@author Denes Nagy, HotPotatoes integration
*	@author Wolfgang Schneider, code/html cleanup
*	@author Julio Montoya <gugli100@gmail.com>, lots of cleanup + several improvements
*/
/**
 * Code
 */
// name of the language file that needs to be included
$language_file = array('exercice','tracking');

// including the global library
require_once '../inc/global.inc.php';
require_once '../gradebook/lib/be.inc.php';

// Setting the tabs
$this_section = SECTION_COURSES;

$htmlHeadXtra[] = api_get_jquery_ui_js();

// Access control
api_protect_course_script(true);

$show = (isset ($_GET['show']) && $_GET['show'] == 'result') ? 'result' : 'test'; // moved down to fix bug: http://www.dokeos.com/forum/viewtopic.php?p=18609#18609

// including additional libraries
require_once 'exercise.class.php';
require_once 'exercise.lib.php';
require_once 'question.class.php';
require_once 'answer.class.php';
require_once api_get_path(LIBRARY_PATH) . 'fileManage.lib.php';
require_once api_get_path(LIBRARY_PATH) . 'fileUpload.lib.php';
require_once 'hotpotatoes.lib.php';
require_once api_get_path(LIBRARY_PATH) . 'document.lib.php';
require_once api_get_path(LIBRARY_PATH) . 'mail.lib.inc.php';


/*	Constants and variables */
$is_allowedToEdit 			= api_is_allowed_to_edit(null,true);
$is_tutor 					= api_is_allowed_to_edit(true);
$is_tutor_course 			= api_is_course_tutor();
$tbl_course_rel_user		= Database :: get_main_table(TABLE_MAIN_COURSE_USER);
$TBL_USER 					= Database :: get_main_table(TABLE_MAIN_USER);
$TBL_DOCUMENT 				= Database :: get_course_table(TABLE_DOCUMENT);
$TBL_ITEM_PROPERTY 			= Database :: get_course_table(TABLE_ITEM_PROPERTY);
$TBL_EXERCICE_ANSWER 		= Database :: get_course_table(TABLE_QUIZ_ANSWER);
$TBL_EXERCICE_QUESTION 		= Database :: get_course_table(TABLE_QUIZ_TEST_QUESTION);
$TBL_EXERCICES 				= Database :: get_course_table(TABLE_QUIZ_TEST);
$TBL_QUESTIONS 				= Database :: get_course_table(TABLE_QUIZ_QUESTION);
$TBL_TRACK_EXERCICES 		= Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES);
$TBL_TRACK_HOTPOTATOES 		= Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_HOTPOTATOES);
$TBL_TRACK_ATTEMPT 			= Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);
$TBL_TRACK_ATTEMPT_RECORDING= Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_ATTEMPT_RECORDING);
$TBL_LP_ITEM_VIEW 			= Database :: get_course_table(TABLE_LP_ITEM_VIEW);
$TBL_LP_ITEM 				= Database :: get_course_table(TABLE_LP_ITEM);
$TBL_LP_VIEW 				= Database :: get_course_table(TABLE_LP_VIEW);

// document path
$documentPath = api_get_path(SYS_COURSE_PATH) . $_course['path'] . "/document";
// picture path
$picturePath  = $documentPath . '/images';
// audio path
$audioPath    = $documentPath . '/audio';

// hotpotatoes
$uploadPath     = DIR_HOTPOTATOES; //defined in main_api
$exercicePath   = api_get_self();
$exfile         = explode('/', $exercicePath);
$exfile         = strtolower($exfile[sizeof($exfile) - 1]);
$exercicePath   = substr($exercicePath, 0, strpos($exercicePath, $exfile));
$exercicePath   = $exercicePath . "exercice.php";

if ($show == 'result') {    
    if (empty($_GET['exerciseId']) && empty($_GET['path']) ) {
       //header('Location: exercice.php?' . api_get_cidreq());
    }
}   
    
// Clear the exercise session
if (isset ($_SESSION['objExercise'])) {
	api_session_unregister('objExercise');
}
if (isset ($_SESSION['objQuestion'])) {
	api_session_unregister('objQuestion');
}
if (isset ($_SESSION['objAnswer'])) {
	api_session_unregister('objAnswer');
}
if (isset ($_SESSION['questionList'])) {
	api_session_unregister('questionList');
}
if (isset ($_SESSION['exerciseResult'])) {
	api_session_unregister('exerciseResult');
}

//General POST/GET/SESSION/COOKIES parameters recovery
if (empty ($origin)) {
	$origin = Security::remove_XSS($_REQUEST['origin']);
}
if (empty ($choice)) {
	$choice = $_REQUEST['choice'];
}
if (empty ($hpchoice)) {
	$hpchoice = $_REQUEST['hpchoice'];
}
if (empty ($exerciseId)) {
	$exerciseId = intval($_REQUEST['exerciseId']);
}
if (empty ($file)) {
	$file = Database :: escape_string($_REQUEST['file']);
}
$learnpath_id       = intval($_REQUEST['learnpath_id']);
$learnpath_item_id  = intval($_REQUEST['learnpath_item_id']);
$page               = intval($_REQUEST['page']);

if ($page < 0) {
    $page = 1;
}

if ($origin == 'learnpath') {
	$show = 'result';
}

//Deleting an attempt
if ($_GET['delete'] == 'delete' && ($is_allowedToEdit || api_is_coach()) && !empty ($_GET['did']) && $_GET['did'] == strval(intval($_GET['did']))) {
	$sql = 'DELETE FROM ' . Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES) . ' WHERE exe_id = ' . $_GET['did']; //_GET[did] filtered by entry condition
	Database::query($sql);
	$filter=Security::remove_XSS($_GET['filter']);
	header('Location: exercice.php?cidReq=' . Security::remove_XSS($_GET['cidReq']) . '&show=result&filter=' . $filter . '&exerciseId='.$exerciseId.'&filter_by_user='.$_GET['filter_by_user']);
	exit;
}

//Send student email @todo move this code in a class, library
if ($show == 'result' && $_REQUEST['comments'] == 'update' && ($is_allowedToEdit || $is_tutor) && $_GET['exeid']== strval(intval($_GET['exeid']))) {
	$id 		= intval($_GET['exeid']); //filtered by post-condition    
	$track_exercise_info = get_exercise_track_exercise_info($id);
    if (empty($track_exercise_info)) {
    	api_not_allowed();
    }
	$test 		       = $track_exercise_info['title'];
	$student_id        = $track_exercise_info['exe_user_id'];
    $course_id         = $track_exercise_info['exe_cours_id'];
    $session_id        = $track_exercise_info['session_id'];
    $lp_id             = $track_exercise_info['orig_lp_id'];
    $lp_item_id        = $track_exercise_info['orig_lp_item_id'];
    $lp_item_view_id   = $track_exercise_info['orig_lp_item_view_id'];
    
    // Teacher data    
    $teacher_info      = api_get_user_info(api_get_user_id());
    
	$user_info         = api_get_user_info($student_id);	
	$student_email 	   = $user_info['mail'];    
	$from 		       = $teacher_info['mail'];
	$from_name         = api_get_person_name($teacher_info['firstname'], $teacher_info['lastname'], null, PERSON_NAME_EMAIL_ADDRESS);
	
	$url		       = api_get_path(WEB_CODE_PATH) . 'exercice/exercice.php?' . api_get_cidreq() . '&id_session='.$session_id.'&show=result&exerciseId='.$exerciseId;	

	$my_post_info      = array();
	$post_content_id   = array();
	$comments_exist    = false;
	
	foreach ($_POST as $key_index=>$key_value) {
		$my_post_info  = explode('_',$key_index);
		$post_content_id[]=$my_post_info[1];
		if ($my_post_info[0]=='comments') {
			$comments_exist=true;
		}
	}

	$loop_in_track=($comments_exist===true) ? (count($_POST)/2) : count($_POST);
	$array_content_id_exe=array();
	if ($comments_exist===true) {
		$array_content_id_exe = array_slice($post_content_id,$loop_in_track);
	} else {
		$array_content_id_exe = $post_content_id;
	}
	
	for ($i=0;$i<$loop_in_track;$i++) {
		$my_marks			= Database::escape_string($_POST['marks_'.$array_content_id_exe[$i]]);
		$contain_comments	= Database::escape_string($_POST['comments_'.$array_content_id_exe[$i]]);
		if (isset($contain_comments)) {
			$my_comments	= Database::escape_string($_POST['comments_'.$array_content_id_exe[$i]]);
		} else {
			$my_comments	= '';
		}
		$my_questionid=$array_content_id_exe[$i];
		$sql = "SELECT question from $TBL_QUESTIONS WHERE id = '$my_questionid'";
		$result =Database::query($sql);
		$ques_name = Database::result($result,0,"question");

		$query = "UPDATE $TBL_TRACK_ATTEMPT SET marks = '$my_marks',teacher_comment = '$my_comments' WHERE question_id = ".$my_questionid." AND exe_id=".$id;
		Database::query($query);
		
		//Saving results in the track recording table
		$recording_changes = 'INSERT INTO '.$TBL_TRACK_ATTEMPT_RECORDING.' (exe_id, question_id, marks, insert_date, author, teacher_comment) VALUES
							  ('."'$id','".$my_questionid."','$my_marks','".api_get_utc_datetime()."','".api_get_user_id()."'".',"'.$my_comments.'")';
		Database::query($recording_changes);
	}
	
	$qry = 'SELECT DISTINCT question_id, marks FROM ' . $TBL_TRACK_ATTEMPT . ' WHERE exe_id = '.$id .' GROUP BY question_id';
	$res = Database::query($qry);
	$tot = 0;
	while ($row = Database :: fetch_array($res, 'ASSOC')) {
		$tot += $row['marks'];
	}
	
	$totquery = "UPDATE $TBL_TRACK_EXERCICES SET exe_result = '".floatval($tot)."' WHERE exe_id = ".$id;
    Database::query($totquery);
    
    //@todo move this somewhere else
	$subject = get_lang('ExamSheetVCC');	
	$course_info = api_get_course_info();
	$message  = '<p>'.get_lang('DearStudentEmailIntroduction') . '</p><p>'.get_lang('AttemptVCC');
	$message .= '<h3>'.get_lang('CourseName'). '</h3><p>'.Security::remove_XSS($course_info['name']).'';
	$message .= '<h3>'.get_lang('Exercise') . '</h3><p>'.Security::remove_XSS($test);
	
	//Only for exercises not in a LP
	if ($lp_id == 0) {	
	    $message .= '<p>'.get_lang('ClickLinkToViewComment') . ' <a href="#url#">#url#</a><br />';
	}
		
	$message .= '<p>'.get_lang('Regards') . ' </p>';
	$message .= $from_name;	
	
	$message = str_replace("#test#", Security::remove_XSS($test), $message);
	$message = str_replace("#url#", $url, $message);
	
	@api_mail_html($student_email, $student_email, $subject, $message, $from_name, $from, array('charset'=>api_get_system_encoding()));
	    
    //Updating LP score here    
	if (in_array($origin, array ('tracking_course','user_course','correct_exercise_in_lp'))) {   
        $sql_update_score = "UPDATE $TBL_LP_ITEM_VIEW SET score = '" . floatval($tot) . "' WHERE id = " .$lp_item_view_id;
        Database::query($sql_update_score);
		if ($origin == 'tracking_course') {
			//Redirect to the course detail in lp
            header('location: exercice.php?course=' . Security :: remove_XSS($_GET['course']));            
			exit;
		} else {
			//Redirect to the reporting
			header('location: ../mySpace/myStudents.php?origin=' . $origin . '&student=' . $student_id . '&details=true&course=' . $course_id.'&session_id='.$session_id);
			exit;
		}        
	}
}

if (!empty($_GET['gradebook']) && $_GET['gradebook']=='view' ) {
	$_SESSION['gradebook']=Security::remove_XSS($_GET['gradebook']);
	$gradebook=	$_SESSION['gradebook'];
} elseif (empty($_GET['gradebook'])) {
	unset($_SESSION['gradebook']);
	$gradebook=	'';
}

if (!empty($gradebook) && $gradebook=='view') {
	$interbreadcrumb[] = array ('url' => '../gradebook/' . $_SESSION['gradebook_dest'],'name' => get_lang('ToolGradebook'));
}

if ($show != 'result') {
	$nameTools = get_lang('Exercices');
} else {
	if ($is_allowedToEdit || $is_tutor) {
		$nameTools = get_lang('StudentScore');				
		$interbreadcrumb[] = array("url" => "exercice.php?gradebook=$gradebook","name" => get_lang('Exercices'));
	    $objExerciseTmp = new Exercise();        
        if ($objExerciseTmp->read($exerciseId)) {
            $interbreadcrumb[] = array("url" => "admin.php?exerciseId=".$exerciseId, "name" => $objExerciseTmp->name);    
        }
	} else {
		$nameTools = get_lang('YourScore');
		$interbreadcrumb[] = array ("url" => "exercice.php?gradebook=$gradebook","name" => get_lang('Exercices'));
	}
}

// need functions of statsutils lib to display previous exercices scores
require_once api_get_path(LIBRARY_PATH) . 'statsUtils.lib.inc.php';

if ($is_allowedToEdit && !empty ($choice) && $choice == 'exportqti2') {
	require_once 'export/qti2/qti2_export.php';
	$export = export_exercise($exerciseId, true);

	require_once api_get_path(LIBRARY_PATH) . 'pclzip/pclzip.lib.php';
	$archive_path = api_get_path(SYS_ARCHIVE_PATH);
	$temp_dir_short = api_get_unique_id();
	$temp_zip_dir = $archive_path . "/" . $temp_dir_short;
	if (!is_dir($temp_zip_dir))
		mkdir($temp_zip_dir, api_get_permissions_for_new_directories());
	$temp_zip_file = $temp_zip_dir . "/" . api_get_unique_id() . ".zip";
	$temp_xml_file = $temp_zip_dir . "/qti2export_" . $exerciseId . '.xml';
	file_put_contents($temp_xml_file, $export);
	$zip_folder = new PclZip($temp_zip_file);
	$zip_folder->add($temp_xml_file, PCLZIP_OPT_REMOVE_ALL_PATH);
	$name = 'qti2_export_' . $exerciseId . '.zip';

	//DocumentManager::string_send_for_download($export,true,'qti2export_'.$exerciseId.'.xml');
	DocumentManager :: file_send_for_download($temp_zip_file, true, $name);
	unlink($temp_zip_file);
	unlink($temp_xml_file);
	rmdir($temp_zip_dir);
	exit; //otherwise following clicks may become buggy
}
if (!empty ($_GET['extra_data'])) {
	switch ($_GET['extra_data']) {
		case 'on' :
			$_SESSION['export_user_fields'] = true;
			break;		
		default :
			$_SESSION['export_user_fields'] = false;
			break;
	}
}
if (!empty($_GET['export_report']) && $_GET['export_report'] == '1') {
	if (api_is_platform_admin() || api_is_course_admin() || api_is_course_tutor() || api_is_course_coach()) {
		$user_id = null;
		if (empty($_SESSION['export_user_fields']))
			$_SESSION['export_user_fields'] = false;
		if (!$is_allowedToEdit and !$is_tutor) {
			$user_id = api_get_user_id();
		}
		require_once 'exercise_result.class.php';
		switch ($_GET['export_format']) {
			case 'xls' :
				$export = new ExerciseResult();               
				$export->exportCompleteReportXLS($documentPath, $user_id, $_SESSION['export_user_fields'], $_GET['export_filter'], $_GET['exerciseId'], $_GET['hotpotato_name']);
				exit;
				break;
			case 'csv' :
			default :
				$export = new ExerciseResult();
				$export->exportCompleteReportCSV($documentPath, $user_id, $_SESSION['export_user_fields'], $_GET['export_filter'], $_GET['exerciseId'], $_GET['hotpotato_name']);
				exit;
				break;
		}
	} else {
		api_not_allowed(true);
	}
}

if ($origin != 'learnpath') {
	//so we are not in learnpath tool
	Display :: display_header($nameTools, get_lang('Exercise'));
	if (isset ($_GET['message'])) {
		if (in_array($_GET['message'], array ('ExerciseEdited'))) {
			Display :: display_confirmation_message(get_lang($_GET['message']));
		}
	}
} else {
	echo '<link rel="stylesheet" type="text/css" href="' . api_get_path(WEB_CODE_PATH) . 'css/default.css"/>';
}

event_access_tool(TOOL_QUIZ);

// Tool introduction
Display :: display_introduction_section(TOOL_QUIZ);

HotPotGCt($documentPath, 1, api_get_user_id() );

// only for administrator

if ($is_allowedToEdit) {
	if (!empty($choice)) {
		// construction of Exercise

		$objExerciseTmp = new Exercise();
		$check = Security::check_token('get');
		if ($objExerciseTmp->read($exerciseId)) {
			if ($check) {
				switch ($choice) {
					case 'delete' : // deletes an exercise
						$objExerciseTmp->delete();						
						require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/gradebook_functions.inc.php';
						$link_id = is_resource_in_course_gradebook(api_get_course_id(), 1 , $exerciseId, api_get_session_id());
						if ($link_id !== false) {
						    remove_resource_from_course_gradebook($link_id);
						}
						Display :: display_confirmation_message(get_lang('ExerciseDeleted'));
						break;
					case 'enable' : // enables an exercise
						$objExerciseTmp->enable();
						$objExerciseTmp->save();
						// "WHAT'S NEW" notification: update table item_property (previously last_tooledit)
						Display :: display_confirmation_message(get_lang('VisibilityChanged'));

						break;
					case 'disable' : // disables an exercise
						$objExerciseTmp->disable();
						$objExerciseTmp->save();
						Display :: display_confirmation_message(get_lang('VisibilityChanged'));
						break;
					case 'disable_results' : //disable the results for the learners
						$objExerciseTmp->disable_results();
						$objExerciseTmp->save();
						Display :: display_confirmation_message(get_lang('ResultsDisabled'));
						break;
					case 'enable_results' : //disable the results for the learners
						$objExerciseTmp->enable_results();
						$objExerciseTmp->save();
						Display :: display_confirmation_message(get_lang('ResultsEnabled'));
						break;
					case 'clean_results' : //clean student results
							$quantity_results_deleted= $objExerciseTmp->clean_results();
							Display :: display_confirmation_message(sprintf(get_lang('XResultsCleaned'),$quantity_results_deleted));
					break;
					case 'copy_exercise' : //copy an exercise
							$objExerciseTmp->copy_exercise();
							Display :: display_confirmation_message(get_lang('ExerciseCopied'));
					break;
				}
			}
		}
		// destruction of Exercise
		unset ($objExerciseTmp);
		Security::clear_token();
	}

	if (!empty($hpchoice)) {
		switch($hpchoice) {
			case 'delete' : // deletes an exercise
				$imgparams = array ();
				$imgcount = 0;
				GetImgParams($file, $documentPath, $imgparams, $imgcount);
				$fld = GetFolderName($file);
				for ($i = 0; $i < $imgcount; $i++) {
					my_delete($documentPath . $uploadPath . "/" . $fld . "/" . $imgparams[$i]);
					update_db_info("delete", $uploadPath . "/" . $fld . "/" . $imgparams[$i]);
				}

				if (my_delete($documentPath . $file)) {
					update_db_info("delete", $file);
				}
				my_delete($documentPath . $uploadPath . "/" . $fld . "/");
				break;
			case 'enable' : // enables an exercise
				$newVisibilityStatus = "1"; //"visible"
				$query = "SELECT id FROM $TBL_DOCUMENT WHERE path='" . Database :: escape_string($file) . "'";
				$res = Database::query($query);
				$row = Database :: fetch_array($res, 'ASSOC');
				api_item_property_update($_course, TOOL_DOCUMENT, $row['id'], 'visible', $_user['user_id']);
				//$dialogBox = get_lang('ViMod');

				break;
			case 'disable' : // disables an exercise
				$newVisibilityStatus = "0"; //"invisible"
				$query = "SELECT id FROM $TBL_DOCUMENT WHERE path='" . Database :: escape_string($file) . "'";
				$res = Database::query($query);
				$row = Database :: fetch_array($res, 'ASSOC');
				api_item_property_update($_course, TOOL_DOCUMENT, $row['id'], 'invisible', $_user['user_id']);
				break;
			default :
				break;
		}
	}
}

// Actions div bar
if ($is_allowedToEdit) {
    echo '<div class="actions">';
} elseif ($show == 'result') {
    echo '<div class="actions">';
}


// Selects $limit exercises at the same time
// maximum number of exercises on a same page
$limit = 50;

// Display the next and previous link if needed
$from = $page * $limit;
HotPotGCt($documentPath, 1, api_get_user_id());

//condition for the session
$session_id         = api_get_session_id();
$condition_session  = api_get_session_condition($session_id,true,true);

if ($show == 'test') {    
    // Only for administrators
    if ($is_allowedToEdit) {
        $total_sql = "SELECT count(id) as count FROM $TBL_EXERCICES WHERE active<>'-1' $condition_session ";
        $sql = "SELECT * FROM $TBL_EXERCICES WHERE active<>'-1' $condition_session ORDER BY title LIMIT ".$from."," .$limit;
    } else { 
        // Only for students
        $total_sql = "SELECT count(id) as count FROM $TBL_EXERCICES WHERE active = '1' $condition_session ";
        $sql = "SELECT id, title, type, description, results_disabled, session_id, start_time, end_time, max_attempt FROM $TBL_EXERCICES 
                WHERE active='1' $condition_session 
                ORDER BY title LIMIT ".$from."," .$limit;
    }
    
    $result = Database::query($sql);        
	$exercises_count = Database :: num_rows($result);
	
	$result_total = Database::query($total_sql);
	$total_exercises  = 0;    
	
	if (Database :: num_rows($result_total)) {    
        $result_total = Database::fetch_array($result_total);
        $total_exercises = $result_total['count'];
	}
    
	//get HotPotatoes files (active and inactive)
	if ($is_allowedToEdit) {
        $sql = "SELECT * FROM $TBL_DOCUMENT WHERE path LIKE '" . Database :: escape_string($uploadPath) . "/%/%'";
        $res = Database::query($sql);
        $hp_count = Database :: num_rows($res);
	} else {
        $res = Database::query("SELECT * FROM $TBL_DOCUMENT d, $TBL_ITEM_PROPERTY ip
                                WHERE d.id = ip.ref  AND ip.tool = '" . TOOL_DOCUMENT . "'
                                AND d.path LIKE '" . Database :: escape_string($uploadPath) . "/%/%'
                                AND ip.visibility='1'");
        $hp_count = Database :: num_rows($res);    
	}
	$total = $total_exercises + $hp_count;		
}

if ($is_allowedToEdit && $origin != 'learnpath') {
	if ($show != 'result') {
		echo '<a href="exercise_admin.php?' . api_get_cidreq() . '">' . Display :: return_icon('new_exercice.png', get_lang('NewEx'),'','32').'</a>';
		echo '<a href="question_create.php?' . api_get_cidreq() . '">' . Display :: return_icon('new_question.png', get_lang('AddQ'),'','32').'</a>';
		echo '<a href="hotpotatoes.php?' . api_get_cidreq() . '">' . Display :: return_icon('import_hotpotatoes.png', get_lang('ImportHotPotatoesQuiz'),'','32').'</a>';
		// link to import qti2 ...
		echo '<a href="qti2.php?' . api_get_cidreq() . '">' . Display :: return_icon('import_qti2.png', get_lang('ImportQtiQuiz'),'','32') .'</a>';
        echo '<a href="upload_exercise.php?' . api_get_cidreq() . '">' . Display :: return_icon('import_excel.png', get_lang('ImportExcelQuiz'),'','32') .'</a>';
	}

	// the actions for the statistics
	if ($show == 'result') {
		// the form
		if (api_is_platform_admin() || api_is_course_admin() || api_is_course_tutor() || api_is_course_coach()) {
			if ($_SESSION['export_user_fields']) {
				$alt = get_lang('ExportWithUserFields');
				$extra_user_fields = '<input type="hidden" name="export_user_fields" value="export_user_fields">';
			} else {
				$alt = get_lang('ExportWithoutUserFields');
				$extra_user_fields = '<input type="hidden" name="export_user_fields" value="do_not_export_user_fields">';
			}			
			echo '<a href="admin.php?exerciseId='.intval($_GET['exerciseId']).'">' . Display :: return_icon('back.png', get_lang('GoBackToQuestionList'),'','32').'</a>';			
            	
            echo '<script type="text/javascript">		
            $(document).ready(function() {
            			    
             	$( "#dialog:ui-dialog" ).dialog( "destroy" );
                    
                $( "#dialog-confirm" ).dialog({
                        autoOpen: false,
                        show: "blind",                
                        resizable: false,
                        height:250,
                        modal: true
                 });
            
                $("#export_opener").click(function() {                
                    var targetUrl = $(this).attr("href");        
                    $( "#dialog-confirm" ).dialog({
                    	width:350,
                    	height:220,
                        buttons: {
                            "'.addslashes(get_lang('Download')).'": function() {
                            	var export_format = $("input[name=export_format]:checked").val();
                            	var extra_data  = $("input[name=load_extra_data]:checked").val();                	         
                                location.href = targetUrl+"&export_format="+export_format+"&extra_data="+extra_data;                
                                $( this ).dialog( "close" );                    
                            },                
                        }
                    });        
                    $( "#dialog-confirm" ).dialog("open");
                    return false;
                }); 
                
            });
            </script>';
            
            echo '<div id="dialog-confirm" title="'.get_lang("ConfirmYourChoice").'">';
                echo Display::tag('p', Display::input('radio', 'export_format', 'csv', array('checked'=>'1', 'id'=>'export_format_csv_label')). Display::tag('label', get_lang('ExportAsCSV'), array('for'=>'export_format_csv_label')));
                echo Display::tag('p', Display::input('radio', 'export_format', 'xls', array('id'=>'export_format_xls_label')). Display::tag('label', get_lang('ExportAsXLS'), array('for'=>'export_format_xls_label')));   
                echo Display::tag('p', Display::input('checkbox', 'load_extra_data',  '0',array('id'=>'load_extra_data_id')). Display::tag('label', get_lang('LoadExtraData'), array('for'=>'load_extra_data_id')));
            echo '</div>';
            if ($_GET['filter'] == '1' or !isset ($_GET['filter']) or $_GET['filter'] == 0 ) {
                $filter = 1;
            } else {
            	$filter = 2;
            } 
            
			echo '<a id="export_opener" href="'.api_get_self().'?export_report=1&show=result&export_filter='.$filter.'&hotpotato_name='.Security::remove_XSS($_GET['path']).'&exerciseId='.intval($_GET['exerciseId']).'" >'.
				  Display::return_icon('save.png',   get_lang('Export'),'',32).'</a>';			
		}
	}
} else {
	//Student view
	if ($show == 'result') {
		echo '<a href="' . api_add_url_param($_SERVER['REQUEST_URI'], 'show=test') . '">' . Display :: return_icon('back.png', get_lang('GoBackToQuestionList'),'','32').'</a>';
	}
}

if ($show == 'result') {
	if (api_is_allowed_to_edit(null,true)) {
		if (!$_GET['filter']) {
			$filter_by_not_revised = true;
			$filter = 1;
		} else {
			$filter=Security::remove_XSS($_GET['filter']);
		}
		$filter = (int)$_GET['filter'];

		switch ($filter) {
			case 1 :
				$filter_by_not_revised = true;
				break;
			case 2 :
				$filter_by_revised = true;
				break;
			default :
				null;
		}
		if (!empty($_GET['exerciseId']) && empty($_GET['filter_by_user'])) {
    		if ($_GET['filter'] == '1' or !isset ($_GET['filter']) or $_GET['filter'] == 0 ) {
    			$view_result = '<a href="' . api_get_self() . '?cidReq=' . api_get_course_id() . '&show=result&filter=2&id_session='.intval($_GET['id_session']).'&exerciseId='.intval($_GET['exerciseId']).'&gradebook='.$gradebook.'" >'.Display :: return_icon('exercice_check.png', get_lang('ShowCorrectedOnly'),'','32').'</a>';
    		} else {
    			$view_result = '<a href="' .api_get_self() . '?cidReq=' . api_get_course_id() . '&show=result&filter=1&id_session='.intval($_GET['id_session']).'&exerciseId='.intval($_GET['exerciseId']).'&gradebook='.$gradebook.'" >'.Display :: return_icon('exercice_uncheck.png', get_lang('ShowUnCorrectedOnly'),'','32').'</a>';
    		}
    		echo $view_result;
		}
	}
}

if ($is_allowedToEdit) {
    echo '</div>'; // closing the actions div
} elseif ($show == 'result') {
    echo '</div>'; // closing the actions div
}

if ($show == 'test') {  
    if ($total > $limit) {
        echo '<div style="float:right;height:20px;">';
        //show pages navigation link for previous page
        if ($page) {
            echo "<a href=\"" . api_get_self() . "?" . api_get_cidreq() . "&amp;page=" . ($page -1) . "\">" . Display :: return_icon('action_prev.png', get_lang('PreviousPage'))."</a>";
        } elseif ($total_exercises + $hp_count > $limit) {
            echo Display :: return_icon('action_prev_na.png', get_lang('PreviousPage'));
        }
            
        //show pages navigation link for previous page
        if ($total_exercises > $from + $limit ||  $hp_count > $from + $limit ) {
            echo ' '."<a href=\"" . api_get_self() . "?" . api_get_cidreq() . "&amp;page=" . ($page +1) . "\">" .Display::return_icon('action_next.png', get_lang('NextPage')) . "</a>";
        } elseif ($page) {
            echo ' '.Display :: return_icon('action_next_na.png', get_lang('NextPage'));
        }
        echo '</div>';
    }
}

if ($show == 'test') { 
    $i =1;
    $lis = '';
    $exercise_list = array();
    $online_icon  = Display::return_icon('online.png', get_lang('Visible'),array('width'=>'12px'));
    $offline_icon = Display::return_icon('offline.png',get_lang('Invisible'),array('width'=>'12px'));
    
    while ($row = Database :: fetch_array($result,'ASSOC')) {
        $exercise_list[] = $row;
    } 
    
    echo '<table class="data_table">';    
    if (!empty($exercise_list)) {     
        /*  Listing exercises  */
        
        if ($origin != 'learnpath') {
            //avoid sending empty parameters
            $myorigin     = (empty ($origin)              ? '' : '&origin=' . $origin);
            $mylpid       = (empty ($learnpath_id)        ? '' : '&learnpath_id=' . $learnpath_id);
            $mylpitemid   = (empty ($learnpath_item_id)   ? '' : '&learnpath_item_id=' . $learnpath_item_id);
            
            $token = Security::get_token();
            $i=1;
            
            if ($is_allowedToEdit) {
                $headers = array(array('name' => get_lang('ExerciseName')), 
                                 array('name' => get_lang('QuantityQuestions'), 'params' => array('width'=>'80px')), 
                                 array('name' => get_lang('Actions'), 'params' => array('width'=>'180px')));
            } else {
            	$headers = array(array('name' => get_lang('ExerciseName')), 
                                 array('name' => get_lang('Status')), 
                                 array('name' => get_lang('Results')));
            }
            
            $header_list = '';
            foreach($headers as $header) {                
                $params = isset($header['params'])? $header['params'] : null;
                $header_list .= Display::tag('th', $header['name'], $params);	
            }
            echo Display::tag('tr', $header_list);
            
            $count = 0;
            if (!empty($exercise_list))
            foreach ($exercise_list as $row) {
                //echo '<div  id="tabs-'.$i.'">';
                $i++;                    
                //validacion when belongs to a session
                $session_img = api_get_session_image($row['session_id'], $_user['status']);
                
                $time_limits = false;                            
                if ($row['start_time'] != '0000-00-00 00:00:00' || $row['end_time'] != '0000-00-00 00:00:00') {
                    $time_limits = true;    
                }                        
                if ($time_limits) {
                    // check if start time
                    $start_time = false;
                    if ($row['start_time'] != '0000-00-00 00:00:00') {
                        $start_time = api_strtotime($row['start_time'],'UTC');
                    }
                    $end_time = false;
                    if ($row['end_time'] != '0000-00-00 00:00:00') {
                        $end_time   = api_strtotime($row['end_time'],'UTC');  
                    }                                    
                    $now        = time();
                    $is_actived_time = false;
                    
                    //If both "clocks" are enable
                    if ($start_time && $end_time) {                  
                        if ($now > $start_time && $end_time > $now ) {
                            $is_actived_time = true;
                        }
                    } else {
                        //we check the start and end
                        if ($start_time) {
                            if ($now > $start_time) {
                               $is_actived_time = true;
                            }
                        }
                        if ($end_time) {
                            if ($end_time > $now ) {
                               $is_actived_time = true;
                            }
                        }
                    }                    
                }  
                 
				
 				//Blocking empty start times see BT#2800
            	global $_custom; 
				if (isset($_custom['exercises_hidden_when_no_start_date']) && $_custom['exercises_hidden_when_no_start_date']) { 
	                if (empty($row['start_time']) || $row['start_time'] == '0000-00-00 00:00:00') {                	
	                	$time_limits = true;
	                	$is_actived_time = false;
	                }
				}
                      
                // Teacher only                
                if ($is_allowedToEdit) {                   
                    $show_quiz_edition = true;                
                    $table_lp_item    = Database::get_course_table(TABLE_LP_ITEM);
                    $sql="SELECT max_score FROM $table_lp_item
                          WHERE item_type = '".TOOL_QUIZ."' AND path ='".Database::escape_string($row['id'])."'";
                    $result = Database::query($sql);
                    if (Database::num_rows($result) > 0) {
                        $show_quiz_edition = false;
                    }
                    
                    $lp_blocked = '';
                    if (!$show_quiz_edition) {
                        $lp_blocked = Display::tag('font', '<i>'.get_lang('AddedToALP').'</i>', array('style'=>'color:grey'));
                    }                    
                                    
                    //Showing exercise title                    
                    $row['title'] = text_filter(cut($row['title'], EXERCISE_MAX_NAME_SIZE));
                     
                    if ($session_id == $row['session_id']) {
                        //Settings                                                                
                        //echo Display::url(Display::return_icon('settings.png',get_lang('Edit'), array('width'=>'22px'))." ".get_lang('Edit'), 'exercise_admin.php?'.api_get_cidreq().'&modifyExercise=yes&exerciseId='.$row['id']);
                    }                                                      

                    if ($row['active'] == 0) {
                        $title = Display::tag('font', $row['title'], array('style'=>'color:grey'));
                    } else {
                        $title = $row['title'];
                    }
                    $url = '<a href="overview.php?'.api_get_cidreq().$myorigin.$mylpid.$mylpitemid.'&exerciseId='.$row['id'].'"><img src="../img/quiz.gif" /> '.$title.' </a>'.$lp_blocked;                    
                    $item =  Display::tag('td', $url.' '.$session_img);  
                    $exid = $row['id'];
    
                    //count number exercice - teacher
                    $sqlquery   = "SELECT count(*) FROM $TBL_EXERCICE_QUESTION WHERE exercice_id = '" . $exid . "'";
                    $sqlresult  = Database::query($sqlquery);
                    $rowi       = Database :: result($sqlresult, 0);
                                        
                    if ($session_id == $row['session_id']) {
                        //Settings                                                                
                        //$actions  = Display::url(Display::return_icon('edit.png',get_lang('Edit'),'',22), 'exercise_admin.php?'.api_get_cidreq().'&modifyExercise=yes&exerciseId='.$row['id']);                        
                        $actions =  Display::url(Display::return_icon('edit.png',get_lang('Edit'),'',22), 'admin.php?'.api_get_cidreq().'&exerciseId='.$row['id']);                        
                        $actions .='<a href="exercice.php?' . api_get_cidreq() . '&show=result&exerciseId='.$row['id'].'">' . Display :: return_icon('test_results.png', get_lang('Results'),'',22).'</a>';                        
                        //Export
                        $actions .= Display::url(Display::return_icon('cd.gif',          get_lang('CopyExercise')),       '', array('onclick'=>"javascript:if(!confirm('".addslashes(api_htmlentities(get_lang('AreYouSureToCopy'),ENT_QUOTES,$charset))." ".addslashes($row['title'])."?"."')) return false;",'href'=>'exercice.php?'.api_get_cidreq().'&choice=copy_exercise&sec_token='.$token.'&exerciseId='.$row['id']));
                        //Clean exercise                    
                        $actions .= Display::url(Display::return_icon('clean.png', get_lang('CleanStudentResults'),'',22),'', array('onclick'=>"javascript:if(!confirm('".addslashes(api_htmlentities(get_lang('AreYouSureToDeleteResults'),ENT_QUOTES,$charset))." ".addslashes($row['title'])."?"."')) return false;",'href'=>'exercice.php?'.api_get_cidreq().'&choice=clean_results&sec_token='.$token.'&exerciseId='.$row['id']));                      
                        //Visible / invisible
                        if ($row['active']) {
                            $actions .= Display::url(Display::return_icon('visible.png', get_lang('Deactivate'),'',22) , 'exercice.php?'.api_get_cidreq().'&choice=disable&sec_token='.$token.'&page='.$page.'&exerciseId='.$row['id']);                        
                        } else { // else if not active                    
                            $actions .= Display::url(Display::return_icon('invisible.png', get_lang('Activate'),'',22) , 'exercice.php?'.api_get_cidreq().'&choice=enable&sec_token='.$token.'&page='.$page.'&exerciseId='.$row['id']);                      
                        }                        
                        // Export qti ...                    
                        $actions .= Display::url(Display::return_icon('export_qti2.png','IMS/QTI','','22'),        'exercice.php?choice=exportqti2&exerciseId='.$row['id']);
                    } else { // not session resource                
                        $actions = Display::return_icon('edit_na.png', get_lang('ExerciseEditionNotAvailableInSession'));                        
                        $actions .='<a href="exercice.php?' . api_get_cidreq() . '&show=result&exerciseId='.$row['id'].'">' . Display :: return_icon('test_results.png', get_lang('Results'),'',22).'</a>';                        
                        $actions .= Display::url(Display::return_icon('cd.gif',   get_lang('CopyExercise')),     '',  array('onclick'=>"javascript:if(!confirm('".addslashes(api_htmlentities(get_lang('AreYouSureToCopy'),ENT_QUOTES,$charset))." ".addslashes($row['title'])."?"."')) return false;",'href'=>'exercice.php?'.api_get_cidreq().'&choice=copy_exercise&sec_token='.$token.'&exerciseId='.$row['id']));                           
                    }
                    
                    //Delete
                    if ($session_id == $row['session_id']) {
                        $actions .= Display::url(Display::return_icon('delete.png', get_lang('Delete'),'',22), '', array('onclick'=>"javascript:if(!confirm('".addslashes(api_htmlentities(get_lang('AreYouSureToDelete'),ENT_QUOTES,$charset))." ".addslashes($row['title'])."?"."')) return false;",'href'=>'exercice.php?'.api_get_cidreq().'&choice=delete&sec_token='.$token.'&exerciseId='.$row['id']));            
                    }

                    $random_label = '';                    
                    if ($row['random'] > 0) {
                       $random_label = ' ('.get_lang('Random').') ';
                       $number_of_questions = $row['random'] . ' ' . api_strtolower(get_lang(($row['random'] > 1  ? 'Questions' : 'Question'))) .$random_label;
                    } else {                    
                       $number_of_questions = $rowi . ' ' . api_strtolower(get_lang(($rowi > 1 || $rowi == 0 ? 'Questions' : 'Question')));
                    }                
     
                    //Attempts                    
                    //$attempts = get_count_exam_results($row['id']).' '.get_lang('Attempts');
                    
                    //$item .=  Display::tag('td',$attempts);
                    $item .=  Display::tag('td', $number_of_questions);
                        
                } else {                     
                    // --- Student only
                    $row['title'] = cut($row['title'], EXERCISE_MAX_NAME_SIZE);  
                    
                    // if time is actived show link to exercise
                    if ($time_limits) {                 
                        if ($is_actived_time) {
                            $url =  '<a href="overview.php?'.api_get_cidreq().$myorigin.$mylpid.$mylpitemid.'&exerciseId='.$row['id'].'">'.$row['title'].'</a>';
                        } else {
                            $url = $row['title'];                            
                        }                       
                    } else {
                        $url = '<a href="overview.php?'.api_get_cidreq().$myorigin.$mylpid.$mylpitemid.'&exerciseId='.$row['id'].'">'.$row['title'].'</a>';                       
                    }                   
                    
                    //Link of the exercise             
                    $item =  Display::tag('td',$url.' '.$session_img);  
                           
                    //count number exercise questions
                    $sqlquery   = "SELECT count(*) FROM $TBL_EXERCICE_QUESTION WHERE exercice_id = ".$row['id'];
                    $sqlresult  = Database::query($sqlquery);
                    $rowi       = Database::result($sqlresult, 0);
                    
                    if ($row['random'] > 0) {
                        $row['random'] . ' ' . api_strtolower(get_lang(($row['random'] > 1 ? 'Questions' : 'Question')));
                    } else {
                        //show results student
                        $rowi . ' ' . api_strtolower(get_lang(($rowi > 1 ? 'Questions' : 'Question')));
                    }      
                                        
                    //This query might be improved later on by ordering by the new "tms" field rather than by exe_id
                    //Don't remove this marker: note-query-exe-results
                    $qry = "SELECT * FROM $TBL_TRACK_EXERCICES
                            WHERE   exe_exo_id      = ".$row['id']." AND 
                                    exe_user_id     = ".api_get_user_id()." AND 
                                    exe_cours_id    = '".api_get_course_id()."' AND 
                                    status         <> 'incomplete' AND 
                                    orig_lp_id      = 0 AND 
                                    orig_lp_item_id = 0 AND 
                                    session_id      =  '" . api_get_session_id() . "'
                            ORDER BY exe_id DESC";
                    $qryres = Database::query($qry);
                    $num    = Database :: num_rows($qryres);
            
                    //Hide the results
                    $my_result_disabled = $row['results_disabled'];
                    
                    //Time limits are on    
                    if ($time_limits) {
                        // Examn is ready to be taken    
                        if ($is_actived_time) {
                            //Show results                    
                            if ($my_result_disabled == 0 || $my_result_disabled == 2) {
                                //More than one attempt
                                if ($num > 0) {
                                    $row_track = Database :: fetch_array($qryres);                                
                                    $attempt_text =  get_lang('LatestAttempt') . ' : ';                                
                                    $attempt_text .= show_score($row_track['exe_result'], $row_track['exe_weighting']);
                                } else {
                                    //No attempts
                                    $attempt_text =  get_lang('NotAttempted');    
                                }                           
                            } else {
                                $attempt_text =  get_lang('CantShowResults');
                            }
                        } else {
                            //Quiz not ready due to time limits
                            if ($row['start_time'] != '0000-00-00 00:00:00' && $row['end_time'] != '0000-00-00 00:00:00') {
                                $attempt_text =  sprintf(get_lang('ExerciseWillBeActivatedFromXToY'), api_convert_and_format_date($row['start_time']), api_convert_and_format_date($row['end_time']));
                            } else {
                                //$attempt_text = get_lang('ExamNotAvailableAtThisTime');                                
                                if ($row['start_time'] != '0000-00-00 00:00:00') { 
                                    $attempt_text = sprintf(get_lang('ExerciseAvailableFromX'), api_convert_and_format_date($row['start_time']));
                                }
                                if ($row['end_time'] != '0000-00-00 00:00:00') {
                                    $attempt_text = sprintf(get_lang('ExerciseAvailableUntilX'), api_convert_and_format_date($row['end_time']));     
                                }                                
                            }
                        }
                    } else {
                        //Normal behaviour
                        //Show results
                        if ($my_result_disabled == 0 || $my_result_disabled == 2) {                         
                            if ($num > 0) {
                                $row_track = Database :: fetch_array($qryres);                                
                                $attempt_text =  get_lang('LatestAttempt') . ' : ';                                
                                $attempt_text .= show_score($row_track['exe_result'], $row_track['exe_weighting']);                                
                            } else {
                                $attempt_text =  get_lang('NotAttempted');
                            }
                        } else {                            
                            $attempt_text = get_lang('CantShowResults');
                        }
                    }                    
                    
                    if (empty($num)) {
                        $num = '';
                    }                        
                    $item .=  Display::tag('td', $attempt_text);
                                     
                    //See results
                    $actions =' '.$num.' <a href="exercice.php?' . api_get_cidreq() . '&show=result&exerciseId='.$row['id'].'">   '.Display::return_icon('test_results.png', get_lang('Results'),'',22).' </a>';
                }                
                $class = 'row_even';
                if ($count % 2) {
                    $class = 'row_odd';
                }                                        
                $item .=  Display::tag('td', $actions);                    
                echo Display::tag('tr',$item, array('class'=>$class));
                       
                $count++;
            } // end foreach()
        } 
    }
    // end exercise list
        
    //Hotpotatoes results        
    
    if ($is_allowedToEdit) {
        $sql = "SELECT d.path as path, d.comment as comment, ip.visibility as visibility
                FROM $TBL_DOCUMENT d, $TBL_ITEM_PROPERTY ip
                WHERE   d.id = ip.ref AND ip.tool = '" . TOOL_DOCUMENT . "' AND (d.path LIKE '%htm%')
                AND   d.path  LIKE '" . Database :: escape_string($uploadPath) . "/%/%' LIMIT " .$from . "," .$limit; // only .htm or .html files listed
    } else {
        $sql = "SELECT d.path as path, d.comment as comment, ip.visibility as visibility
                FROM $TBL_DOCUMENT d, $TBL_ITEM_PROPERTY ip
                WHERE d.id = ip.ref AND ip.tool = '" . TOOL_DOCUMENT . "' AND (d.path LIKE '%htm%')
                AND   d.path  LIKE '" . Database :: escape_string($uploadPath) . "/%/%' AND ip.visibility='1' LIMIT " .$from . "," .$limit;
    }
    
    $result = Database::query($sql);

    while ($row = Database :: fetch_array($result, 'ASSOC')) {
        $attribute['path'][]        = $row['path'];
        $attribute['visibility'][]  = $row['visibility'];
        $attribute['comment'][]     = $row['comment'];
    }
    
    $nbrActiveTests = 0;
    if (isset($attribute['path']) && is_array($attribute['path'])) {
        while (list($key, $path) = each($attribute['path'])) {
            $item = '';
            list ($a, $vis) = each($attribute['visibility']);
            if (strcmp($vis, "1") == 0) {
                $active = 1;
            } else {
                $active = 0;
            }
            $title = GetQuizName($path, $documentPath);
            if ($title == '') {
                $title = basename($path);
            }
            
            $class = 'row_even';
            if ($count % 2) {
                $class = 'row_odd';
            }
                
            // prof only
            if ($is_allowedToEdit) {
                $item  = Display::tag('td','<img src="../img/hotpotatoes_s.png" alt="HotPotatoes" /> <a href="showinframes.php?file='.$path.'&cid='.api_get_course_id().'&uid='.api_get_user_id().'"'.(!$active?'class="invisible"':'').'>'.$title.'</a> ');
                $item .= Display::tag('td','-');
                                 
                $actions =  Display::url(Display::return_icon('edit.png',get_lang('Edit'),'',22), 'adminhp.php?'.api_get_cidreq().'&hotpotatoesName='.$path);
                $actions .='<a href="exercice.php?' . api_get_cidreq() . '&show=result&path='.$path.'">' . Display :: return_icon('test_results.png', get_lang('Results'),'',22).'</a>';
                                        
                // if active
                if ($active) {
                    $nbrActiveTests = $nbrActiveTests +1;
                    $actions .= '      <a href="'.$exercicePath.'?'.api_get_cidreq().'&hpchoice=disable&amp;page='.$page.'&amp;file='.$path.'">'.Display::return_icon('visible.png', get_lang('Deactivate'),'',22).'</a>';
                } else { // else if not active
                    $actions .='    <a href="'.$exercicePath.'?'.api_get_cidreq().'&hpchoice=enable&amp;page='.$page.'&amp;file='.$path.'">'.Display::return_icon('invisible.png', get_lang('Activate'),'',22).'</a>';
                }
                $actions .= '<a href="'.$exercicePath.'?'.api_get_cidreq().'&amp;hpchoice=delete&amp;file='.$path.'" onclick="javascript:if(!confirm(\''.addslashes(api_htmlentities(get_lang('AreYouSureToDelete'),ENT_QUOTES,$charset).' '.$title."?").'\')) return false;">'.Display::return_icon('delete.png', get_lang('Delete'),'',22).'</a>';
                                        
                //$actions .='<img src="../img/lp_quiz_na.gif" border="0" title="'.get_lang('NotMarkActivity').'" alt="" />';
                $item .= Display::tag('td', $actions);
                echo Display::tag('tr',$item, array('class'=>$class));                     
            } else { // student only
                if ($active == 1) {
                    $nbrActiveTests = $nbrActiveTests +1;
                    $item .= Display::tag('td', '<a href="showinframes.php?'.api_get_cidreq().'&file='.$path.'&cid='.api_get_course_id().'&uid='.api_get_user_id().'"'.(!$active?'class="invisible"':'').'">'.$title.'</a>');
                    $item .= Display::tag('td', '');                            
                    //$item .= Display::tag('td', '');
                    $actions ='<a href="exercice.php?' . api_get_cidreq() . '&show=result&path='.$path.'">' . Display :: return_icon('test_results.png', get_lang('Results'),'',22).'</a>';
                    $item .= Display::tag('td', $actions);                            
                    echo Display::tag('tr',$item, array('class'=>$class));
                }                        
            }
            $count ++;
        }
    }    
    echo '</table>';    
    Display :: display_footer();    
    exit;
}
    

/* Exercise Results (uses tracking tool) */

// if tracking is enabled
if ($show == 'result') {
	$parameters=array('cidReq'=>Security::remove_XSS($_GET['cidReq']),'show'=>Security::remove_XSS($_GET['show']),'filter' => Security::remove_XSS($_GET['filter']),'gradebook' =>Security::remove_XSS($_GET['gradebook']));
    $exercise_id = intval($_GET['exerciseId']);
    if (!empty($exercise_id))
        $parameters['exerciseId'] = $exercise_id;
    if (!empty($_GET['path'])) {
        $parameters['path'] = Security::remove_XSS($_GET['path']);
    }
	$table = new SortableTable('quiz_results', 'get_count_exam_results', 'get_exam_results_data');
	$table->set_additional_parameters($parameters);
    
    if ($is_allowedToEdit || $is_tutor) {
		if (api_is_western_name_order()) {
			$table->set_header(0, get_lang('FirstName'));
			$table->set_header(1, get_lang('LastName'));    			
		} else {
			$table->set_header(0, get_lang('LastName'));
			$table->set_header(1, get_lang('FirstName'));    			
		}		
		$table->set_header(2, get_lang('Exercice'));
    	$table->set_header(3, get_lang('Duration'),false);
    	$table->set_header(4, get_lang('Date'));
    	$table->set_header(5, get_lang('Score'),false);
    	$table->set_header(6, get_lang('CorrectTest'), false);   
    	
    } else {
        $table->set_header(0, get_lang('Exercice'));
    	$table->set_header(1, get_lang('Duration'),false);
    	$table->set_header(2, get_lang('Date'));
    	$table->set_header(3, get_lang('Score'),false);
    	$table->set_header(4, get_lang('Result'), false);   
    }	 
	$table->display();	
}

if ($origin != 'learnpath') { //so we are not in learnpath tool
	Display :: display_footer();
}