<?php // $Id: userLog.php 11160 2007-02-20 01:07:55Z yannoo $
/*
==============================================================================
	Dokeos - elearning and course management software

	Copyright (c) 2004 Dokeos S.A.
	Copyright (c) 2003 Ghent University (UGent)
	Copyright (c) 2001 Universite catholique de Louvain (UCL)
	Copyright (c) Roan Embrechts (Vrije Universiteit Brussel)
    Copyright (c) Sebastien Piraux  <piraux_seb@hotmail.com>

	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.tracking
* @todo clean code - structure is unclear and difficult to modify
==============================================================================
*/

/*
==============================================================================
		INIT SECTION
==============================================================================
*/
$uInfo = $_REQUEST['uInfo'];
$view = $_REQUEST['view'];
// name of the language file that needs to be included 
$language_file = 'tracking';

include('../inc/global.inc.php');

// Roles and rights system
$user_id = api_get_user_id();
$course_id = api_get_course_id();

/*
$role_id = RolesRights::get_local_user_role_id($user_id, $course_id);
$location_id = RolesRights::get_course_tool_location_id($course_id, TOOL_TRACKING);
$is_allowed = RolesRights::is_allowed_which_rights($role_id, $location_id);

//block users without view right
RolesRights::protect_location($role_id, $location_id);
*/
//YW Hack security to quick fix RolesRights bug
$is_allowed = true;
/*
-----------------------------------------------------------
	Libraries
-----------------------------------------------------------
*/
include(api_get_path(LIBRARY_PATH).'statsUtils.lib.inc.php');
include(api_get_path(LIBRARY_PATH).'course.lib.php');
include(api_get_path(SYS_CODE_PATH).'resourcelinker/resourcelinker.inc.php');
require_once(api_get_path(SYS_CODE_PATH).'exercice/hotpotatoes.lib.php');

/*
-----------------------------------------------------------
	Header
-----------------------------------------------------------
*/
// charset determination
if ($_GET['scormcontopen'])
{
	$tbl_lp = Database::get_course_table('lp');
	$contopen = (int) $_GET['scormcontopen'];
	$sql = "SELECT default_encoding FROM $tbl_lp WHERE id = ".$contopen;
	$res = api_sql_query($sql,__FILE__,__LINE__);
	$row = Database::fetch_array($res);
	$lp_charset = $row['default_encoding'];
	//header('Content-Type: text/html; charset='. $row['default_encoding']);
}


/*
$interbreadcrumb[]= array ("url"=>"../group/group.php", "name"=> get_lang('BredCrumpGroups'));
$interbreadcrumb[]= array ("url"=>"../group/group_space.php?gidReq=$_gid", "name"=> get_lang('BredCrumpGroupSpace'));
*/

if($uInfo)
{
	$interbreadcrumb[]= array ("url"=>"../user/userInfo.php?uInfo=$uInfo", "name"=> ucfirst(get_lang('Users')));
}

$nameTools = get_lang('ToolName');

$htmlHeadXtra[] = "<style type='text/css'>
/*<![CDATA[*/
.secLine {background-color : #E6E6E6;}
.content {padding-left : 15px;padding-right : 15px; }
.specialLink{color : #0000FF;}
/*]]>*/
</style>
<style media='print' type='text/css'>
/*<![CDATA[*/
td {border-bottom: thin dashed gray;}
/*]]>*/
</style>";



Display::display_header($nameTools,"Tracking");

/*
-----------------------------------------------------------
	Constants and variables
-----------------------------------------------------------
*/
$is_allowedToTrack = $is_courseAdmin;
$is_course_member = CourseManager::is_user_subscribed_in_real_or_linked_course($user_id, $course_id);

// Database Table Definitions
$TABLECOURSUSER	        	= Database::get_main_table(TABLE_MAIN_COURSE_USER);
$TABLEUSER	        		= Database::get_main_table(TABLE_MAIN_USER);
$tbl_session_course_user 	= Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$tbl_session 				= Database::get_main_table(TABLE_MAIN_SESSION);

$TABLETRACK_ACCESS      	= $_configuration['statistics_database']."`.`track_e_access";
$TABLETRACK_LINKS       	= $_configuration['statistics_database']."`.`track_e_links";
$TABLETRACK_LOGIN       	= $_configuration['statistics_database']."`.`track_e_login";
$TABLETRACK_DOWNLOADS   	= $_configuration['statistics_database']."`.`track_e_downloads";
$TABLETRACK_UPLOADS     	= $_configuration['statistics_database']."`.`track_e_uploads";
$TABLETRACK_EXERCICES   	= $_configuration['statistics_database']."`.`track_e_exercices";

$TABLECOURSE_LINKS			= Database::get_course_table(TABLE_LINK);
$TABLECOURSE_WORK       	= Database::get_course_table(TABLE_STUDENT_PUBLICATION);
$TABLECOURSE_GROUPSUSER 	= Database::get_course_table(TABLE_GROUP_USER);
$TABLECOURSE_EXERCICES  	= Database::get_course_table(TABLE_QUIZ_TEST);
$TBL_TRACK_HOTPOTATOES  	= Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_HOTPOTATOES);


if(api_get_setting('use_session_mode') == "true") {
	$sql = "SELECT 1
			FROM $tbl_session_course_user AS session_course_user
			INNER JOIN $tbl_session AS session
				ON session_course_user.id_session = session.id
				AND ((date_start<=NOW()
				AND date_end>=NOW())
				OR (date_start='0000-00-00' AND date_end='0000-00-00'))
			WHERE id_session='".$_SESSION['id_session']."' AND course_code='$_cid'";
	//echo $sql;
	$result=api_sql_query($sql,__FILE__,__LINE__);
	if(!mysql_num_rows($result)){
		$disabled = true;
	}
}

$tbl_learnpath_main = Database::get_course_table('lp');
$tbl_learnpath_item = Database::get_course_table('lp_item');
$tbl_learnpath_view = Database::get_course_table('lp_view');
$tbl_learnpath_item_view = Database::get_course_table('lp_item_view');

$documentPath=api_get_path(SYS_COURSE_PATH).$_course['path'].'/document';

// the variables for the days and the months
// Defining the shorts for the days
$DaysShort = array (myEnc(get_lang("SundayShort")), myEnc(get_lang("MondayShort")), myEnc(get_lang("TuesdayShort")), myEnc(get_lang("WednesdayShort")), myEnc(get_lang("ThursdayShort")), myEnc(get_lang("FridayShort")), myEnc(get_lang("SaturdayShort")));
// Defining the days of the week to allow translation of the days
$DaysLong = array (myEnc(get_lang("SundayLong")), myEnc(get_lang("MondayLong")), myEnc(get_lang("TuesdayLong")), myEnc(get_lang("WednesdayLong")), myEnc(get_lang("ThursdayLong")), myEnc(get_lang("FridayLong")), myEnc(get_lang("SaturdayLong")));
// Defining the months of the year to allow translation of the months
$MonthsLong = array (myEnc(get_lang("JanuaryLong")), myEnc(get_lang("FebruaryLong")), myEnc(get_lang("MarchLong")), myEnc(get_lang("AprilLong")), myEnc(get_lang("MayLong")), myEnc(get_lang("JuneLong")), myEnc(get_lang("JulyLong")), myEnc(get_lang("AugustLong")), myEnc(get_lang("SeptemberLong")), myEnc(get_lang("OctoberLong")), myEnc(get_lang("NovemberLong")), myEnc(get_lang("DecemberLong")));
// Defining the months of the year to allow translation of the months
$MonthsShort = array (myEnc(get_lang("JanuaryShort")), myEnc(get_lang("FebruaryShort")), myEnc(get_lang("MarchShort")), myEnc(get_lang("AprilShort")), myEnc(get_lang("MayShort")), myEnc(get_lang("JuneShort")), myEnc(get_lang("JulyShort")), myEnc(get_lang("AugustShort")), myEnc(get_lang("SeptemberShort")), myEnc(get_lang("OctoberShort")), myEnc(get_lang("NovemberShort")), myEnc(get_lang("DecemberShort")));

//$is_allowedToTrack = $is_groupTutor; // allowed to track only user of one group
//$is_allowedToTrackEverybodyInCourse = $is_allowed[EDIT_RIGHT]; // allowed to track all students in course
//YW hack security to fix RolesRights bug
$is_allowedToTrack = true; // allowed to track only user of one group
$is_allowedToTrackEverybodyInCourse = $is_allowedToTrack; // allowed to track all students in course

/*
==============================================================================
		FUNCTIONS
==============================================================================
*/

/**
 * Shortcut function to use htmlentities on many, many strings in this script
 * @param		string	String in a supposed encoding
 * @param		string	Supposed initial encoding (default: 'ISO-8859-15')
 * @return	string	HTML string (no encoding dependency)
 * @author Yannick Warnier <yannick.warnier@dokeos.com>
 */
function myEnc($isostring,$supposed_encoding='ISO-8859-15')
{
	return htmlentities($isostring,ENT_QUOTES,$supposed_encoding);
}

/**
* Displays the number of logins every month for a specific user in a specific course.
*/
function display_login_tracking_info($view, $user_id, $course_id)
{
	$MonthsLong = $GLOBALS['MonthsLong'];
	$track_access_table = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ACCESS);
	$tempView = $view;
	if(substr($view,0,1) == '1')
	{
		$new_view = substr_replace($view,'0',0,1);
		echo "
			<tr>
					<td valign='top'>
					<font color='#0000FF'>-&nbsp;&nbsp;&nbsp;</font><b>".myEnc(get_lang('LoginsAndAccessTools'))."</b>&nbsp;&nbsp;&nbsp;[<a href='".$_SERVER['PHP_SELF']."?uInfo=$user_id&view=".$new_view."'>".myEnc(get_lang('Close'))."</a>]&nbsp;&nbsp;&nbsp;[<a href='userLogCSV.php?".api_get_cidreq()."&uInfo=".$_GET['uInfo']."&view=10000'>".get_lang('ExportAsCSV')."</a>]
					</td>
			</tr>
			";
		echo "<tr><td style='padding-left : 40px;' valign='top'>".myEnc(get_lang('LoginsDetails'))."<br>";

		$sql = "SELECT UNIX_TIMESTAMP(`access_date`), count(`access_date`)
					FROM $track_access_table
					WHERE `access_user_id` = '$user_id'
					AND `access_cours_code` = '".$course_id."'
					GROUP BY YEAR(`access_date`),MONTH(`access_date`)
					ORDER BY YEAR(`access_date`),MONTH(`access_date`) ASC";

		echo "<tr><td style='padding-left : 40px;padding-right : 40px;'>";
		//$results = getManyResults2Col($sql);
		$results = getManyResults3Col($sql);

		echo "<table cellpadding='2' cellspacing='1' border='0' align=center>";
		echo "<tr>
				<td class='secLine'>
				".myEnc(get_lang('LoginsTitleMonthColumn'))."
				</td>
				<td class='secLine'>
				".myEnc(get_lang('LoginsTitleCountColumn'))."
				</td>
			</tr>";
		$total = 0;
		if (is_array($results))
		{
			for($j = 0 ; $j < count($results) ; $j++)
			{
				echo "<tr>";
				//echo "<td class='content'><a href='logins_details.php?uInfo=$user_id&reqdate=".$results[$j][0]."'>".$langMonthNames['long'][date("n", $results[$j][0])-1]." ".date("Y", $results[$j][0])."</a></td>";
				echo "<td class='content'><a href='logins_details.php?uInfo=$user_id&reqdate=".$results[$j][0]."&view=$view'>".$MonthsLong[date('n', $results[$j][0])-1].' '.date('Y', $results[$j][0])."</a></td>";
				echo "<td valign='top' align='right' class='content'>".$results[$j][1]."</td>";
				echo"</tr>";
				$total = $total + $results[$j][1];
			}
			echo "<tr>";
			echo "<td>".myEnc(get_lang('Total'))."</td>";
			echo "<td align='right' class='content'>".$total."</td>";
			echo"</tr>";
		}
		else
		{
			echo "<tr>";
			echo "<td colspan='2'><center>".myEnc(get_lang('NoResult'))."</center></td>";
			echo"</tr>";
		}
		echo "</table>";
		echo "</td></tr>";
	}
	else
	{
		$new_view = substr_replace($view,'1',0,1);
		echo "
			<tr>
					<td valign='top'>
					+<font color='#0000FF'>&nbsp;&nbsp;</font><a href='".$_SERVER['PHP_SELF']."?uInfo=$user_id&view=".$new_view."' class='specialLink'>".myEnc(get_lang('LoginsAndAccessTools'))."</a>
					</td>
			</tr>
		";
	}
}

/**
* Displays the exercise results for a specific user in a specific course.
* @todo remove globals
*/
function display_exercise_tracking_info($view, $user_id, $course_id)
{
	global $TABLECOURSE_EXERCICES, $TABLETRACK_EXERCICES;
	if(substr($view,1,1) == '1')
	{
		$new_view = substr_replace($view,'0',1,1);
		echo "
			<tr>
				<td valign='top'>
					<font color='#0000FF'>-&nbsp;&nbsp;&nbsp;</font><b>".myEnc(get_lang('ExercicesResults'))."</b>&nbsp;&nbsp;&nbsp;[<a href='".$_SERVER['PHP_SELF']."?uInfo=$user_id&view=".$new_view."'>".myEnc(get_lang('Close'))."</a>]&nbsp;&nbsp;&nbsp;[<a href='userLogCSV.php?".api_get_cidreq()."&uInfo=".$_GET['uInfo']."&view=01000'>".get_lang('ExportAsCSV')."</a>]
				</td>
			</tr>
		";
		echo "<tr><td style='padding-left : 40px;' valign='top'>".myEnc(get_lang('ExercicesDetails'))."<br />";

		$sql = "SELECT `ce`.`title`, `te`.`exe_result` , `te`.`exe_weighting`, UNIX_TIMESTAMP(`te`.`exe_date`)
			FROM $TABLECOURSE_EXERCICES AS ce , `$TABLETRACK_EXERCICES` AS te
			WHERE `te`.`exe_cours_id` = '$course_id'
				AND `te`.`exe_user_id` = '$user_id'
				AND `te`.`exe_exo_id` = `ce`.`id`
			ORDER BY `ce`.`title` ASC, `te`.`exe_date` ASC";

		$hpsql = "SELECT `te`.`exe_name`, `te`.`exe_result` , `te`.`exe_weighting`, UNIX_TIMESTAMP(`te`.`exe_date`)
			FROM $TBL_TRACK_HOTPOTATOES AS te
			WHERE `te`.`exe_user_id` = '$user_id' AND `te`.`exe_cours_id` = '$course_id'
			ORDER BY `te`.`exe_cours_id` ASC, `te`.`exe_date` ASC";

		$hpresults = getManyResultsXCol($hpsql, 4);

		$NoTestRes = 0;
		$NoHPTestRes = 0;

		echo "<tr>\n<td style='padding-left : 40px;padding-right : 40px;'>\n";
		$results = getManyResultsXCol($sql, 4);
		echo "<table cellpadding='2' cellspacing='1' border='0' align='center'>\n";
		echo "
			<tr bgcolor='#E6E6E6'>
				<td>
				".myEnc(get_lang('ExercicesTitleExerciceColumn'))."
				</td>
				<td>
				".myEnc(get_lang('Date'))."
				</td>
				<td>
				".myEnc(get_lang('ExercicesTitleScoreColumn'))."
				</td>
			</tr>";

		if (is_array($results))
		{
			for($i = 0; $i < sizeof($results); $i++)
			{
				$display_date = format_locale_date(get_lang('dateTimeFormatLong'), $results[$i][3]);
				echo "<tr>\n";
				echo "<td class='content'>".$results[$i][0]."</td>\n";
				echo "<td class='content'>".$display_date."</td>\n";
				echo "<td valign='top' align='right' class='content'>".$results[$i][1]." / ".$results[$i][2]."</td>\n";
				echo "</tr>\n";
			}
		}
		else // istvan begin
		{
			$NoTestRes = 1;
		}

		// The Result of Tests
		if(is_array($hpresults))
		{
			for($i = 0; $i < sizeof($hpresults); $i++)
			{
				$title = GetQuizName($hpresults[$i][0],'');

				if ($title == '')
					$title = GetFileName($hpresults[$i][0]);

				$display_date = format_locale_date(get_lang('dateTimeFormatLong'), $hpresults[$i][3]);
?>
				<tr>
					<td class="content"><?php echo $title; ?></td>
					<td class="content" align="center"><?php echo $display_date; ?></td>
					<td class="content" align="center"><?php echo $hpresults[$i][1]; ?> / <?php echo $hpresults[$i][2]; ?></td>
				</tr>
<?php		}
		}
		else
		{
			$NoHPTestRes = 1;
		}

		if ($NoTestRes == 1 && $NoHPTestRes == 1)
		{
			echo "<tr>\n";
			echo "<td colspan='3'><center>".myEnc(get_lang('NoResult'))."</center></td>\n";
			echo "</tr>\n";
		}
		echo "</table>";
		echo "</td>\n</tr>\n";
	}
	else
	{
		$new_view = substr_replace($view,'1',1,1);
		echo "
			<tr>
				<td valign='top'>
					+<font color='#0000FF'>&nbsp;&nbsp;</font><a href='".$_SERVER['PHP_SELF']."?uInfo=$user_id&view=".$new_view."' class='specialLink'>".myEnc(get_lang('ExercicesResults'))."</a>
				</td>
			</tr>
		";
	}
}

/**
* Displays the student publications for a specific user in a specific course.
* @todo remove globals
*/
function display_student_publications_tracking_info($view, $user_id, $course_id)
{
	global $TABLETRACK_UPLOADS, $TABLECOURSE_WORK, $dateTimeFormatLong;
	if(substr($view,2,1) == '1')
	{
		$new_view = substr_replace($view,'0',2,1);
		echo "
			<tr>
					<td valign='top'>
					<font color='#0000FF'>-&nbsp;&nbsp;&nbsp;</font><b>".myEnc(get_lang('WorkUploads'))."</b>&nbsp;&nbsp;&nbsp;[<a href='".$_SERVER['PHP_SELF']."?uInfo=$user_id&view=".$new_view."'>".myEnc(get_lang('Close'))."</a>]&nbsp;&nbsp;&nbsp;[<a href='userLogCSV.php?".api_get_cidreq()."&uInfo=".$_GET['uInfo']."&view=00100'>".get_lang('ExportAsCSV')."</a>]
					</td>
			</tr>
		";
		echo "<tr><td style='padding-left : 40px;' valign='top'>".myEnc(get_lang('WorksDetails'))."<br>";
		$sql = "SELECT `u`.`upload_date`, `w`.`title`, `w`.`author`,`w`.`url`
							FROM `$TABLETRACK_UPLOADS` `u` , $TABLECOURSE_WORK `w`
							WHERE `u`.`upload_work_id` = `w`.`id`
								AND `u`.`upload_user_id` = '$user_id'
								AND `u`.`upload_cours_id` = '$course_id'
							ORDER BY `u`.`upload_date` DESC";
		echo "<tr><td style='padding-left : 40px;padding-right : 40px;'>";
		$results = getManyResultsXCol($sql,4);
		echo "<table cellpadding='2' cellspacing='1' border='0' align=center>";
		echo "<tr>
				<td class='secLine' width='40%'>
				".myEnc(get_lang('WorkTitle'))."
				</td>
				<td class='secLine' width='30%'>
				".myEnc(get_lang('WorkAuthors'))."
				</td>
				<td class='secLine' width='30%'>
				".myEnc(get_lang('Date'))."
				</td>
			</tr>";
		if (is_array($results))
		{
			for($j = 0 ; $j < count($results) ; $j++)
			{
				$pathToFile = api_get_path(WEB_COURSE_PATH).$_course['path']."/".$results[$j][3];
				$timestamp = strtotime($results[$j][0]);
				$beautifulDate = format_locale_date($dateTimeFormatLong,$timestamp);
				echo "<tr>";
				echo "<td class='content'>"
						."<a href ='".$pathToFile."'>".$results[$j][1]."</a>"
						."</td>";
				echo "<td class='content'>".$results[$j][2]."</td>";
				echo "<td class='content'>".$beautifulDate."</td>";
				echo"</tr>";
			}

		}
		else
		{
			echo "<tr>";
			echo "<td colspan='3'><center>".myEnc(get_lang('NoResult'))."</center></td>";
			echo"</tr>";
		}
		echo "</table>";
		echo "</td></tr>";
	}
	else
	{
		$new_view = substr_replace($view,'1',2,1);
		echo "
			<tr>
					<td valign='top'>
					+<font color='#0000FF'>&nbsp;&nbsp;</font><a href='".$_SERVER['PHP_SELF']."?uInfo=$user_id&view=".$new_view."' class='specialLink'>".myEnc(get_lang('WorkUploads'))."</a>
					</td>
			</tr>
		";
	}
}

/**
* Displays the links followed for a specific user in a specific course.
* @todo remove globals
*/
function display_links_tracking_info($view, $user_id, $course_id)
{
	global $TABLETRACK_LINKS, $TABLECOURSE_LINKS;
	if(substr($view,3,1) == '1')
	{
		$new_view = substr_replace($view,'0',3,1);
		echo "
			<tr>
					<td valign='top'>
					<font color='#0000FF'>-&nbsp;&nbsp;&nbsp;</font><b>".myEnc(get_lang('LinksAccess'))."</b>&nbsp;&nbsp;&nbsp;[<a href='".$_SERVER['PHP_SELF']."?uInfo=$user_id&view=".$new_view."'>".myEnc(get_lang('Close'))."</a>]&nbsp;&nbsp;&nbsp;[<a href='userLogCSV.php?".api_get_cidreq()."&uInfo=".$_GET['uInfo']."&view=00010'>".get_lang('ExportAsCSV')."</a>]
					</td>
			</tr>
		";
		echo "<tr><td style='padding-left : 40px;' valign='top'>".myEnc(get_lang('LinksDetails'))."<br>";
		$sql = "SELECT `cl`.`title`, `cl`.`url`
					FROM `$TABLETRACK_LINKS` AS sl, $TABLECOURSE_LINKS AS cl
					WHERE `sl`.`links_link_id` = `cl`.`id`
						AND `sl`.`links_cours_id` = '$course_id'
						AND `sl`.`links_user_id` = '$user_id'
					GROUP BY `cl`.`title`, `cl`.`url`";
		echo "<tr><td style='padding-left : 40px;padding-right : 40px;'>";
		$results = getManyResults2Col($sql);
		echo "<table cellpadding='2' cellspacing='1' border='0' align=center>";
		echo "<tr>
				<td class='secLine'>
				".myEnc(get_lang('LinksTitleLinkColumn'))."
				</td>
			</tr>";
		if (is_array($results))
		{
			for($j = 0 ; $j < count($results) ; $j++)
			{
					echo "<tr>";
					echo "<td class='content'><a href='".$results[$j][1]."'>".$results[$j][0]."</a></td>";
					echo"</tr>";
			}

		}
		else
		{
			echo "<tr>";
			echo "<td ><center>".myEnc(get_lang('NoResult'))."</center></td>";
			echo"</tr>";
		}
		echo "</table>";
		echo "</td></tr>";
	}
	else
	{
		$new_view = substr_replace($view,'1',3,1);
		echo "
			<tr>
					<td valign='top'>
					+<font color='#0000FF'>&nbsp;&nbsp;</font><a href='".$_SERVER['PHP_SELF']."?uInfo=$user_id&view=".$new_view."' class='specialLink'>".myEnc(get_lang('LinksAccess'))."</a>
					</td>
			</tr>
		";
	}
}

/**
* Displays the documents downloaded for a specific user in a specific course.
*/
function display_document_tracking_info($view, $user_id, $course_id)
{
	$downloads_table = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_DOWNLOADS);
	if(substr($view,4,1) == '1')
	{
		$new_view = substr_replace($view,'0',4,1);
		echo "
			<tr>
					<td valign='top'>
					<font color='#0000FF'>-&nbsp;&nbsp;&nbsp;</font><b>".myEnc(get_lang('DocumentsAccess'))."</b>&nbsp;&nbsp;&nbsp;[<a href='".$_SERVER['PHP_SELF']."?uInfo=$user_id&view=".$new_view."'>".myEnc(get_lang('Close'))."</a>]&nbsp;&nbsp;&nbsp;[<a href='userLogCSV.php?".api_get_cidreq()."&uInfo=".$_GET['uInfo']."&view=00001'>".get_lang('ExportAsCSV')."</a>]
					</td>
			</tr>
		";
		echo "<tr><td style='padding-left : 40px;' valign='top'>".myEnc(get_lang('DocumentsDetails'))."<br>";

		$sql = "SELECT `down_doc_path`
					FROM $downloads_table
					WHERE `down_cours_id` = '$course_id'
						AND `down_user_id` = '$user_id'
					GROUP BY `down_doc_path`";

		echo "<tr><td style='padding-left : 40px;padding-right : 40px;'>";
		$results = getManyResults1Col($sql);
		echo "<table cellpadding='2' cellspacing='1' border='0' align='center'>";
		echo "<tr>
				<td class='secLine'>
				".myEnc(get_lang('DocumentsTitleDocumentColumn'))."
				</td>
			</tr>";
		if (is_array($results))
		{
			for($j = 0 ; $j < count($results) ; $j++)
			{
					echo "<tr>";
					echo "<td class='content'>".$results[$j]."</td>";
					echo"</tr>";
			}

		}
		else
		{
			echo "<tr>";
			echo "<td><center>".myEnc(get_lang('NoResult'))."</center></td>";
			echo"</tr>";
		}
		echo "</table>";
		echo "</td></tr>";
	}
	else
	{
		$new_view = substr_replace($view,'1',4,1);
		echo "
			<tr>
					<td valign='top'>
					+<font color='#0000FF'>&nbsp;&nbsp;</font><a href='".$_SERVER['PHP_SELF']."?uInfo=$user_id&view=".$new_view."' class='specialLink'>".myEnc(get_lang('DocumentsAccess'))."</a>
					</td>
			</tr>
		";
	}
}


/*
==============================================================================
		MAIN SECTION
==============================================================================
*/
?>
<h3>
	<?php echo $nameTools ?>
</h3>
<h4>
	<?php echo myEnc(get_lang('StatsOfUser')); ?>
</h4>
<table width="100%" cellpadding="2" cellspacing="3" border="0">
<?php
// check if uid is tutor of this group
if( ( $is_allowedToTrack || $is_allowedToTrackEverybodyInCourse ) && $_configuration['tracking_enabled'] )
{
	if(!$uInfo && !isset($uInfo) )
	{
		/***************************************************************************
		*
		*		Display list of user of this group
		*
		***************************************************************************/
		echo "<h4>".myEnc(get_lang('ListStudents'))."</h4>";
		if( $is_allowedToTrackEverybodyInCourse )
		{
			// if user can track everybody : list user of course
			if(api_get_setting('use_session_mode')) {
				$sql = "SELECT count(user_id)
							FROM $TABLECOURSUSER
							WHERE `course_code` = '$_cid'";
			}
			else {
				$sql = "SELECT count(id_user)
							FROM $tbl_session_course_user
							WHERE `course_code` = '$_cid'";
			}
		}
		else
		{
			// if user can only track one group : list users of this group
			$sql = "SELECT count(user)
						FROM $TABLECOURSE_GROUPSUSER
						WHERE `group_id` = '$_gid'";
		}
		$userGroupNb = getOneResult($sql);
		$step = 25; // number of student per page
		if ($userGroupNb > $step)
		{
			if(!isset($offset))
			{
					$offset=0;
			}

			$next     = $offset + $step;
			$previous = $offset - $step;

			$navLink = "<table width='100%' border='0'>\n"
					."<tr>\n"
							."<td align='left'>";

			if ($previous >= 0)
			{
					$navLink .= "<a href='".$_SERVER['PHP_SELF']."?offset=$previous'>&lt;&lt; ".myEnc(get_lang('PreviousPage'))."</a>";
			}

			$navLink .= "</td>\n"
					."<td align='right'>";

			if ($next < $userGroupNb)
			{
					$navLink .= "<a href='".$_SERVER['PHP_SELF']."?offset=$next'>".myEnc(get_lang('NextPage'))." &gt;&gt;</a>";
			}

			$navLink .= "</td>\n"
					."</tr>\n"
					."</table>\n";
		}
		else
		{
			$offset = 0;
		}

		echo $navLink;

	if (!settype($offset, 'integer') || !settype($step, 'integer')) die('Offset or step variables are not integers.');	//sanity check of integer vars
		if( $is_allowedToTrackEverybodyInCourse )
		{
			// list of users in this course
			$sql = "SELECT `u`.`user_id`, `u`.`firstname`,`u`.`lastname`
						FROM $TABLECOURSUSER cu , $TABLEUSER u
						WHERE `cu`.`user_id` = `u`.`user_id`
							AND `cu`.`course_code` = '$_cid'
						LIMIT $offset,$step";
		}
		else
		{
			// list of users of this group
			$sql = "SELECT `u`.`user_id`, `u`.`firstname`,`u`.`lastname`
						FROM $TABLECOURSE_GROUPSUSER gu , $TABLEUSER u
						WHERE `gu`.`user_id` = `u`.`user_id`
							AND `gu`.`group_id` = '$_gid'
						LIMIT $offset,$step";
		}
		$list_users = getManyResults3Col($sql);
		echo 	"<table width='100%' cellpadding='2' cellspacing='1' border='0'>\n"
					."<tr align='center' valign='top' bgcolor='#E6E6E6'>\n"
					."<td align='left'>",myEnc(get_lang('UserName')),"</td>\n"
					."</tr>\n";
		for($i = 0 ; $i < sizeof($list_users) ; $i++)
		{
			echo    "<tr valign='top' align='center'>\n"
					."<td align='left'>"
					."<a href='".$_SERVER['PHP_SELF']."?uInfo=",$list_users[$i][0],"'>"
					.$list_users[$i][1]," ",$list_users[$i][2]
					."</a>".
					"</td>\n";
		}
		echo        "</table>\n";

		echo $navLink;
	}
	else // if uInfo is set
	{
		/***************************************************************************
		*
		*		Informations about student uInfo
		*
		***************************************************************************/
		// these checks exists for security reasons, neither a prof nor a tutor can see statistics of a user from
		// another course, or group
		if( $is_allowedToTrackEverybodyInCourse )
		{
			// check if user is in this course
			$tracking_is_accepted = $is_course_member;
			$tracked_user_info = Database::get_user_info_from_id($uInfo);
		}
		else
		{
			// check if user is in the group of this tutor
			$sql = "SELECT `u`.`firstname`,`u`.`lastname`, `u`.`email`
						FROM $TABLECOURSE_GROUPSUSER gu , $TABLEUSER u
						WHERE `gu`.`user_id` = `u`.`user_id`
							AND `gu`.`group_id` = '$_gid'
							AND `u`.`user_id` = '$uInfo'";
			$query = api_sql_query($sql,__FILE__,__LINE__);
			$tracked_user_info = @mysql_fetch_assoc($query);
			if(is_array($tracked_user_info)) $tracking_is_accepted = true;
		}

		if ($tracking_is_accepted)
		{
			$tracked_user_info['email'] == '' ? $mail_link = myEnc(get_lang('NoEmail')) : $mail_link = Display::encrypted_mailto_link($tracked_user_info['email']);

			echo "<tr><td>";
			echo get_lang('informationsAbout').' :';
			echo "<ul>\n"
					."<li>".myEnc(get_lang('FirstName'))." : ".$tracked_user_info['firstname']."</li>\n"
					."<li>".myEnc(get_lang('LastName'))." : ".$tracked_user_info['lastname']."</li>\n"
					."<li>".myEnc(get_lang('Email'))." : ".$mail_link."</li>\n"
					."</ul>";
			echo "</td></tr>\n";

			// show all : number of 1 is equal to or bigger than number of categories
			// show none : number of 0 is equal to or bigger than number of categories
			echo "<tr>
					<td>
					[<a href='".$_SERVER['PHP_SELF']."?uInfo=$uInfo&view=1111111'>".myEnc(get_lang('ShowAll'))."</a>]
					[<a href='".$_SERVER['PHP_SELF']."?uInfo=$uInfo&view=0000000'>".myEnc(get_lang('ShowNone'))."</a>]".
					//"||[<a href='".$_SERVER['PHP_SELF']."'>".myEnc(get_lang('BackToList'))."</a>]".
					"</td>
				</tr>
			";
			if(!isset($view))
			{
				$view ='0000000';
			}
			//Logins
			display_login_tracking_info($view, $uInfo, $_cid);

			//Exercise results
			display_exercise_tracking_info($view, $uInfo, $_cid);

			//Student publications uploaded
			display_student_publications_tracking_info($view, $uInfo, $_cid);

			//Links usage
			display_links_tracking_info($view, $uInfo, $_cid);

			//Documents downloaded
			display_document_tracking_info($view, $uInfo, $_cid);
		}
		else
		{
			echo myEnc(get_lang('ErrorUserNotInGroup'));
		}


		/***************************************************************************
         *
         *		Scorm contents and Learning Path
         *
         ***************************************************************************/
        if(substr($view,5,1) == '1')
        {
            $new_view = substr_replace($view,'0',5,1);
            echo "
                <tr>
                        <td valign='top'>
                        <font     color='#0000FF'>-&nbsp;&nbsp;&nbsp;</font><b>".myEnc(get_lang('ScormAccess'))."</b>&nbsp;&nbsp;&nbsp;[<a href='".$_SERVER['PHP_SELF']."?view=$new_view&uInfo=$uInfo'>".myEnc(get_lang('Close'))."</a>]&nbsp;&nbsp;&nbsp;[<a href='userLogCSV.php?".api_get_cidreq()."&uInfo=".$_GET['uInfo']."&view=000001'>".get_lang('ExportAsCSV')."</a>]
                        </td>
                </tr>
            ";

            $sql = "SELECT id, name FROM $tbl_learnpath_main";
    		$result=api_sql_query($sql,__FILE__,__LINE__);
    	    $ar=Database::fetch_array($result);

	    	echo "<tr><td style='padding-left : 40px;padding-right : 40px;'>";
            echo "<table cellpadding='2' cellspacing='1' border='0' align='center'><tr>
    				                <td class='secLine'>
    								&nbsp;".myEnc(get_lang('ScormContentColumn'))."&nbsp;
    				                </td>
    		</tr>";
            if (is_array($ar))
            {
    			while ($ar['id'] != '') {
    				$lp_title = stripslashes($ar['name']);
    				echo "<tr><td>";
    				echo "<a href='".$_SERVER['PHP_SELF']."?view=".$view."&scormcontopen=".$ar['id']."&uInfo=$uInfo' class='specialLink'>$lp_title</a>";
    				echo "</td></tr>";
    				if ($ar['id']==$scormcontopen) { //have to list the students here
        					$contentId=$ar['id'];
							$sql3 = "SELECT iv.status, iv.score, i.title, iv.total_time " .
									"FROM $tbl_learnpath_item i " .
									"INNER JOIN $tbl_learnpath_item_view iv ON i.id=iv.lp_item_id " .
									"INNER JOIN $tbl_learnpath_view v ON iv.lp_view_id=v.id " .
									"WHERE (v.user_id=$uInfo and v.lp_id=$contentId) ORDER BY v.id, i.id";
   							$result3=api_sql_query($sql3,__FILE__,__LINE__);
   						    $ar3=Database::fetch_array($result3);
                            if (is_array($ar3)) {
                                echo "<tr><td>&nbsp;&nbsp;&nbsp;</td>
       				                <td class='secLine'>
       				                &nbsp;".myEnc(get_lang('ScormTitleColumn'))."&nbsp;
       				                </td>
       				                <td class='secLine'>
       				                &nbsp;".myEnc(get_lang('ScormStatusColumn'))."&nbsp;
       				                </td>
       				                <td class='secLine'>
       				                &nbsp;".myEnc(get_lang('ScormScoreColumn'))."&nbsp;
       				                </td>
       				                <td class='secLine'>
       				                &nbsp;".myEnc(get_lang('ScormTimeColumn'))."&nbsp;
       				                </td>
       					            </tr>";
       							while ($ar3['status'] != '') {
									require_once('../newscorm/learnpathItem.class.php');
									$time = learnpathItem::get_scorm_time('php',$ar3['total_time']);
									$title = htmlentities($ar3['title'],ENT_QUOTES,$lp_charset);
       								echo "<tr><td>&nbsp;&nbsp;&nbsp;</td><td>";
       								echo "$title</td><td align=right>{$ar3['status']}</td><td     align=right>{$ar3['score']}</td><td align=right>$time</td>";
       								echo "</tr>";
       								$ar3=Database::fetch_array($result3);
       							}
                            } else {
                                echo "<tr>";
                                echo "<td colspan='3'><center>".myEnc(get_lang('ScormNeverOpened'))."</center></td>";
                                echo"</tr>";
                            }
   					}
		    		$ar=Database::fetch_array($result);
    			}

            }
            else
            {
				$noscorm=true;
            }

			if ($noscorm) {
                echo "<tr>";
                echo "<td colspan='3'><center>".myEnc(get_lang('NoResult'))."</center></td>";
                echo "</tr>";
			}
            echo "</table>";
            echo "</td></tr>";
        }
        else
        {
            $new_view = substr_replace($view,'1',5,1);
            echo "
                <tr>
                        <td valign='top'>
                        +<font color='#0000FF'>&nbsp;&nbsp;</font><a href='".$_SERVER['PHP_SELF']."?view=$new_view&uInfo=$uInfo' class='specialLink'>".myEnc(get_lang('ScormAccess'))."</a>
                        </td>
                </tr>
            ";
        }

    }
}
// not allowed
else
{
    if(!$_configuration['tracking_enabled'])
    {
        echo myEnc(get_lang('TrackingDisabled'));
    }
    else
    {
        api_not_allowed();
    }
}
?>

</table>

<?php
Display::display_footer();
?>