<?php
/* For licensing terms, see /license.txt */

/**
 * Implements the tracking of students in the Reporting pages
 * @package chamilo.reporting
 */

// name of the language file that needs to be included
$language_file = array(
    'registration',
    'index',
    'tracking',
    'exercice',
    'admin',
    'gradebook',
    'survey',
    'forum'
);

require_once '../inc/global.inc.php';

require_once api_get_path(LIBRARY_PATH).'export.lib.inc.php';
require_once api_get_path(SYS_CODE_PATH).'newscorm/learnpath.class.php';
require_once api_get_path(SYS_CODE_PATH).'mySpace/myspace.lib.php';
require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/gradebookitem.class.php';
require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/evaluation.class.php';
require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/result.class.php';
require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/linkfactory.class.php';
require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/category.class.php';
require_once api_get_path(LIBRARY_PATH).'attendance.lib.php';
require_once api_get_path(SYS_CODE_PATH).'survey/survey.lib.php';

api_block_anonymous_users();

if (!api_is_allowed_to_create_course() && !api_is_session_admin() && !api_is_drh()) {
    // Check if the user is tutor of the course
    $user_course_status = CourseManager::get_tutor_in_course_status(
        api_get_user_id(),
        api_get_course_id()
    );
    if ($user_course_status != 1) {
        api_not_allowed(true);
    }
}

$htmlHeadXtra[] = '<script>
function show_image(image,width,height) {
	width = parseInt(width) + 20;
	height = parseInt(height) + 20;
	window_x = window.open(image,\'windowX\',\'width=\'+ width + \', height=\'+ height + \'\');
}
</script>';

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

if ($export_csv) {
    ob_start();
}
$csv_content = array();

$from_myspace = false;
if (isset ($_GET['from']) && $_GET['from'] == 'myspace') {
    $from_myspace = true;
    $this_section = SECTION_TRACKING;
} else {
    $this_section = SECTION_COURSES;
}

$nameTools = get_lang('StudentDetails');

$get_course_code = Security :: remove_XSS($_GET['course']);

if (isset($_GET['details'])) {
    if (!empty ($_GET['origin']) && $_GET['origin'] == 'user_course') {
        $course_info = CourseManager :: get_course_information($get_course_code);
        if (empty ($cidReq)) {
            $interbreadcrumb[] = array (
                "url" => api_get_path(WEB_COURSE_PATH) . $course_info['directory'],
                'name' => $course_info['title']
            );
        }
        $interbreadcrumb[] = array (
            "url" => "../user/user.php?cidReq=" . $get_course_code,
            "name" => get_lang("Users")
        );
    } else
        if (!empty($_GET['origin']) && $_GET['origin'] == 'tracking_course') {
            $course_info = CourseManager :: get_course_information($get_course_code);
            $interbreadcrumb[] = array (
                "url" => "../tracking/courseLog.php?cidReq=".$get_course_code.'&id_session=' . api_get_session_id(),
                "name" => get_lang("Tracking")
            );
        } else
            if (!empty ($_GET['origin']) && $_GET['origin'] == 'resume_session') {
                $interbreadcrumb[] = array (
                    'url' => '../admin/index.php',
                    "name" => get_lang('PlatformAdmin')
                );
                $interbreadcrumb[] = array (
                    'url' => "../admin/session_list.php",
                    "name" => get_lang('SessionList')
                );
                $interbreadcrumb[] = array (
                    'url' => "../admin/resume_session.php?id_session=" . Security :: remove_XSS($_GET['id_session']),
                    "name" => get_lang('SessionOverview')
                );
            } else {
                $interbreadcrumb[] = array (
                    "url" => "index.php",
                    "name" => get_lang('MySpace')
                );
                if (isset ($_GET['id_coach']) && intval($_GET['id_coach']) != 0) {
                    $interbreadcrumb[] = array (
                        "url" => "student.php?id_coach=" . Security :: remove_XSS($_GET['id_coach']),
                        "name" => get_lang("CoachStudents")
                    );
                    $interbreadcrumb[] = array (
                        "url" => "myStudents.php?student=" . Security :: remove_XSS($_GET['student']) . '&id_coach=' . Security :: remove_XSS($_GET['id_coach']),
                        "name" => get_lang("StudentDetails")
                    );
                } else {
                    $interbreadcrumb[] = array (
                        "url" => "student.php",
                        "name" => get_lang("MyStudents")
                    );
                    $interbreadcrumb[] = array (
                        "url" => "myStudents.php?student=" . Security :: remove_XSS($_GET['student']),
                        "name" => get_lang("StudentDetails")
                    );
                }
            }
    $nameTools = get_lang("DetailsStudentInCourse");
} else {
    if (!empty ($_GET['origin']) && $_GET['origin'] == 'resume_session') {
        $interbreadcrumb[] = array (
            'url' => '../admin/index.php',
            "name" => get_lang('PlatformAdmin')
        );
        $interbreadcrumb[] = array (
            'url' => "../admin/session_list.php",
            "name" => get_lang('SessionList')
        );
        $interbreadcrumb[] = array (
            'url' => "../admin/resume_session.php?id_session=" . Security :: remove_XSS($_GET['id_session']),
            "name" => get_lang('SessionOverview')
        );
    } else {
        $interbreadcrumb[] = array (
            "url" => "index.php",
            "name" => get_lang('MySpace')
        );
        if (isset ($_GET['id_coach']) && intval($_GET['id_coach']) != 0) {
            if (isset ($_GET['id_session']) && intval($_GET['id_session']) != 0) {
                $interbreadcrumb[] = array (
                    "url" => "student.php?id_coach=" . Security :: remove_XSS($_GET['id_coach']) . "&id_session=" . $_GET['id_session'],
                    "name" => get_lang("CoachStudents")
                );
            } else {
                $interbreadcrumb[] = array (
                    "url" => "student.php?id_coach=" . Security :: remove_XSS($_GET['id_coach']),
                    "name" => get_lang("CoachStudents")
                );
            }
        } else {
            $interbreadcrumb[] = array (
                "url" => "student.php",
                "name" => get_lang("MyStudents")
            );
        }
    }
}

// Database Table Definitions
$tbl_course_user = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
$tbl_stats_exercices = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES);

if (isset($_GET['user_id']) && $_GET['user_id'] != "") {
    $user_id = intval($_GET['user_id']);
} else {
    $user_id = api_get_user_id();
}

$session_id = intval($_GET['id_session']);
if (empty($session_id)) {
    $session_id = api_get_session_id();
}

$student_id = intval($_GET['student']);

// Action behaviour
$check = Security::check_token('get');

if ($check) {
    switch ($_GET['action']) {
        case 'reset_lp' :
            $course = isset($_GET['course']) ? $_GET['course'] : "";
            $lp_id = isset($_GET['lp_id']) ? intval($_GET['lp_id']) : "";

            if (api_is_allowed_to_edit() &&
                !empty($course) &&
                !empty($lp_id) &&
                !empty($student_id)
            ) {
                $course_info = api_get_course_info($course);
                delete_student_lp_events(
                    $student_id,
                    $lp_id,
                    $course_info,
                    $session_id
                );

                //@todo delete the stats.track_e_exercices records. First implement this http://support.chamilo.org/issues/1334
                $message = Display::return_message(
                    get_lang('LPWasReset'),
                    'success'
                );
            }
            break;
        default:
            break;
    }
    Security::clear_token();
}

// user info
$user_info = api_get_user_info($student_id);
$courses_in_session = array();

//See #4676
$drh_can_access_all_courses = false;

if (api_is_drh() || api_is_platform_admin()) {
    $drh_can_access_all_courses = true;
}

$courses = CourseManager::get_course_list_of_user_as_course_admin(api_get_user_id());

$courses_in_session_by_coach = array();
$sessions_coached_by_user = Tracking::get_sessions_coached_by_user(api_get_user_id());

// RRHH or session admin
if (api_is_session_admin() || api_is_drh()) {
    $courses = CourseManager::get_courses_followed_by_drh(api_get_user_id());
    $session_by_session_admin = SessionManager::get_sessions_followed_by_drh(api_get_user_id());

    if (!empty($session_by_session_admin)) {
        foreach ($session_by_session_admin as $session_coached_by_user) {
            $courses_followed_by_coach = Tracking :: get_courses_list_from_session($session_coached_by_user['id']);
            $courses_in_session_by_coach[$session_coached_by_user['id']] = $courses_followed_by_coach;
        }
    }
}

// Teacher or admin
if (!empty($sessions_coached_by_user)) {
    foreach ($sessions_coached_by_user as $session_coached_by_user) {
        $sid = intval($session_coached_by_user['id']);
        $courses_followed_by_coach = Tracking :: get_courses_followed_by_coach(api_get_user_id(), $sid);
        $courses_in_session_by_coach[$sid] = $courses_followed_by_coach;
    }
}

$sql = "SELECT course_code
        FROM $tbl_course_user
        WHERE
            relation_type <> ".COURSE_RELATION_TYPE_RRHH." AND
            user_id = ".intval($user_info['user_id']);
$rs = Database::query($sql);

while ($row = Database :: fetch_array($rs)) {
    if ($drh_can_access_all_courses) {
        $courses_in_session[0][] = $row['course_code'];
    } else {
        if (isset($courses[$row['course_code']])) {
            $courses_in_session[0][] = $row['course_code'];
        }
    }
}

// Get the list of sessions where the user is subscribed as student
$sql = 'SELECT id_session, course_code
        FROM '.Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER).'
        WHERE id_user=' . intval($user_info['user_id']);
$rs = Database::query($sql);
$tmp_sessions = array();
while ($row = Database :: fetch_array($rs)) {
    $tmp_sessions[] = $row['id_session'];
    if ($drh_can_access_all_courses) {
        if (in_array($row['id_session'], $tmp_sessions)) {
            $courses_in_session[$row['id_session']][] = $row['course_code'];
        }
    } else {
        if (isset($courses_in_session_by_coach[$row['id_session']])) {
            if (in_array($row['id_session'], $tmp_sessions)) {
                $courses_in_session[$row['id_session']][] = $row['course_code'];
            }
        }
    }
}
$isDrhOfCourse = CourseManager::isUserSubscribedInCourseAsDrh(
    api_get_user_id(),
    api_get_course_info()
);

if (api_is_drh() && !api_is_platform_admin()) {
    if (!empty($student_id)) {
        if (api_drh_can_access_all_session_content()) {
            //@todo securize drh with student id
            /*$users = SessionManager::getAllUsersFromCoursesFromAllSessionFromStatus('drh_all', api_get_user_id());
            $userList = array();
            foreach ($users as $user) {
                $userList[] = $user['user_id'];
            }
            if (!in_array($student_id, $userList)) {
                api_not_allowed(true);
            }*/
        } else {
            if (!($isDrhOfCourse)) {
                if (api_is_drh() &&
                   !UserManager::is_user_followed_by_drh($student_id, api_get_user_id())
                ) {
                    api_not_allowed(true);
                }
            }
        }
    }
}

Display :: display_header($nameTools);

if (isset($message)) {
    echo $message;
}

$token = Security::get_token();
if (!empty($student_id)) {

    // Actions bar
    echo '<div class="actions">';
    echo '<a href="javascript: window.back();" ">'.Display::return_icon('back.png', get_lang('Back'),'',ICON_SIZE_MEDIUM).'</a>';

    echo '<a href="javascript: void(0);" onclick="javascript: window.print();">'.Display::return_icon('printer.png', get_lang('Print'),'',ICON_SIZE_MEDIUM).'</a>';
    echo '<a href="' . api_get_self() . '?' . Security :: remove_XSS($_SERVER['QUERY_STRING']) . '&export=csv">'.Display::return_icon('export_csv.png', get_lang('ExportAsCSV'),'',ICON_SIZE_MEDIUM).'</a> ';
    if (!empty ($user_info['email'])) {
        $send_mail = '<a href="mailto:'.$user_info['email'].'">'.Display :: return_icon('mail_send.png', get_lang('SendMail'),'',ICON_SIZE_MEDIUM).'</a>';
    } else {
        $send_mail = Display :: return_icon('mail_send_na.png', get_lang('SendMail'),'',ICON_SIZE_MEDIUM);
    }
    echo $send_mail;
    if (!empty($student_id) && !empty($_GET['course'])) {
        // Only show link to connection details if course and student were defined in the URL
        echo '<a href="access_details.php?student=' . $student_id . '&course=' . Security :: remove_XSS($_GET['course']) . '&amp;origin=' . Security :: remove_XSS($_GET['origin']) . '&amp;cidReq='.Security::remove_XSS($_GET['course']).'&amp;id_session='.$session_id.'">'.
            Display :: return_icon('statistics.png', get_lang('AccessDetails'),'',ICON_SIZE_MEDIUM).'</a>';
    }
    if (api_can_login_as($student_id)) {
        echo '<a href="'.api_get_path(WEB_CODE_PATH).'admin/user_list.php?action=login_as&amp;user_id='.$student_id.'&amp;sec_token='.$token.'">'.
            Display::return_icon('login_as.png', get_lang('LoginAs'), null, ICON_SIZE_MEDIUM).'</a>&nbsp;&nbsp;';
    }

    echo '</div>';

    // is the user online ?
    if (user_is_online($_GET['student'])) {
        $online = get_lang('Yes');
    } else {
        $online = get_lang('No');
    }

    // get average of score and average of progress by student
    $avg_student_progress = $avg_student_score = 0;
    $course_code = Security :: remove_XSS($_GET['course']);

    if (!CourseManager :: is_user_subscribed_in_course($user_info['user_id'], $course_code, true)) {
        unset($courses[$key]);
    } else {

        $avg_student_progress = Tracking::get_avg_student_progress(
            $user_info['user_id'],
            $course_code,
            array(),
            $session_id
        );

        //the score inside the Reporting table
        $avg_student_score = Tracking::get_avg_student_score(
            $user_info['user_id'],
            $course_code,
            array(),
            $session_id
        );
    }

    $avg_student_progress = round($avg_student_progress, 2);

    // time spent on the course

    $time_spent_on_the_course = api_time_to_hms(
        Tracking:: get_time_spent_on_the_course(
            $user_info['user_id'],
            $course_code,
            $session_id
        )
    );

    // get information about connections on the platform by student
    $first_connection_date = Tracking :: get_first_connection_date($user_info['user_id']);
    if ($first_connection_date == '') {
        $first_connection_date = get_lang('NoConnexion');
    }

    $last_connection_date = Tracking :: get_last_connection_date($user_info['user_id'], true);
    if ($last_connection_date == '') {
        $last_connection_date = get_lang('NoConnexion');
    }

    // cvs information
    $csv_content[] = array(
        get_lang('Informations', '')
    );
    $csv_content[] = array (
        get_lang('Name', ''),
        get_lang('Email', ''),
        get_lang('Tel', '')
    );
    $csv_content[] = array(
        $user_info['complete_name'],
        $user_info['email'],
        $user_info['phone']
    );

    $csv_content[] = array();

    // csv tracking
    $csv_content[] = array(
        get_lang('Tracking', '')
    );
    $csv_content[] = array(
        get_lang('FirstLogin', ''),
        get_lang('LatestLogin', ''),
        get_lang('TimeSpentInTheCourse', ''),
        get_lang('Progress', ''),
        get_lang('Score', '')
    );
    $csv_content[] = array(
        strip_tags($first_connection_date),
        strip_tags($last_connection_date),
        $time_spent_on_the_course,
        $avg_student_progress . '%',
        $avg_student_score
    );

    //Show title
    $info_course = CourseManager :: get_course_information($course_code);
    $coachs_name  = '';
    $session_name = '';
    $nb_login = Tracking :: count_login_per_student($user_info['user_id'], $_GET['course']);
    //get coach and session_name if there is one and if session_mode is activated
    if ($session_id > 0) {

        $session_info  = api_get_session_info($session_id);
        $course_coachs = api_get_coachs_from_course($session_id, $course_code);
        $nb_login = '';
        if (!empty($course_coachs)) {
            $info_tutor_name = array();
            foreach ($course_coachs as $course_coach) {
                $info_tutor_name[] = api_get_person_name($course_coach['firstname'], $course_coach['lastname']);
            }
            $info_course['tutor_name'] = implode(",",$info_tutor_name);
        } elseif ($session_coach_id != 0) {
            $session_coach_id = intval($session_info['id_coach']);
            $coach_info = UserManager::get_user_info_by_id($session_coach_id);
            $info_course['tutor_name'] = api_get_person_name($coach_info['firstname'], $coach_info['lastname']);
        }
        $coachs_name  = $info_course['tutor_name'];
        $session_name = $session_info['name'];
    } // end

    $info_course  = CourseManager :: get_course_information($get_course_code);
    $table_title = Display::return_icon('user.png', get_lang('User'), array(), ICON_SIZE_SMALL).$user_info['complete_name'];

    echo Display::page_subheader($table_title);

    echo '<table width="100%" border="0">';
    echo '<tr>';

    $image_array = UserManager :: get_user_picture_path_by_id($user_info['user_id'], 'web', false, true);
    echo '<td class="borderRight" width="10%" valign="top">';

    // get the path,width and height from original picture
    $image_file = $image_array['dir'] . $image_array['file'];
    $big_image = $image_array['dir'] . 'big_' . $image_array['file'];
    $big_image_size = api_getimagesize($big_image);
    $big_image_width = $big_image_size['width'];
    $big_image_height = $big_image_size['height'];
    $url_big_image = $big_image . '?rnd=' . time();
    $img_attributes = 'src="' . $image_file . '?rand=' . time() . '" ' .
        'alt="' . $user_info['complete_name']. '" ' .
        'style="float:' . ($text_dir == 'rtl' ? 'right' : 'left') . '; padding:5px;" ';

    if ($image_array['file'] == 'unknown.jpg') {
        echo '<img ' . $img_attributes . ' />';
    } else {
        echo '<input type="image" ' . $img_attributes . ' onclick="javascript: return show_image(\'' . $url_big_image . '\',\'' . $big_image_width . '\',\'' . $big_image_height . '\');"/>';
    }
    echo '</td>';
    ?>
    <td width="40%" valign="top">
        <table width="100%" class="data_table">
            <tr>
                <th><?php echo get_lang('Information'); ?></th>
            </tr>
            <tr>
                <td><?php echo get_lang('Name') . ' : '.$user_info['complete_name']; ?></td>
            </tr>
            <tr>
                <td><?php echo get_lang('Email') . ' : ';
                    if (!empty ($user_info['email'])) {
                        echo '<a href="mailto:' . $user_info['email'] . '">' . $user_info['email'] . '</a>';
                    } else {
                        echo get_lang('NoEmail');
                    } ?>
                </td>
            </tr>
            <tr>
                <td> <?php echo get_lang('Tel') . ' : ';
                    if (!empty ($user_info['phone'])) {
                        echo $user_info['phone'];
                    } else {
                        echo get_lang('NoTel');
                    }
                    ?>
                </td>
            </tr>
            <tr>
                <td> <?php echo get_lang('OfficialCode') . ' : ';
                    if (!empty ($user_info['official_code'])) {
                        echo $user_info['official_code'];
                    } else {
                        echo get_lang('NoOfficialCode');
                    }
                    ?>
                </td>
            </tr>
            <tr>
                <td><?php echo get_lang('OnLine') . ' : '.$online; ?> </td>
            </tr>
            <?php

            // Display timezone if the user selected one and if the admin allows the use of user's timezone
            $timezone = null;
            $timezone_user = UserManager::get_extra_user_data_by_field($user_info['user_id'],'timezone');
            $use_users_timezone = api_get_setting('use_users_timezone', 'timezones');
            if ($timezone_user['timezone'] != null && $use_users_timezone == 'true') {
                $timezone = $timezone_user['timezone'];
            }
            if ($timezone !== null) {
                ?>
                <tr>
                    <td> <?php echo get_lang('Timezone') . ' : '.$timezone; ?> </td>
                </tr>
            <?php
            }
            ?>
        </table>
    </td>

    <td class="borderLeft" width="35%" valign="top">
        <table width="100%" class="data_table">
            <tr>
                <th colspan="2"><?php echo get_lang('Tracking'); ?></th>
            </tr>
            <tr><td align="right"><?php echo get_lang('FirstLogin') ?></td>
                <td align="left"><?php echo $first_connection_date ?></td>
            </tr>
            <tr>
                <td align="right"><?php echo get_lang('LatestLogin') ?></td>
                <td align="left"><?php echo $last_connection_date ?></td>
            </tr>

            <?php if (isset($_GET['details']) && $_GET['details'] == 'true') {?>
                <tr>
                    <td align="right"><?php echo get_lang('TimeSpentInTheCourse') ?></td>
                    <td align="left"><?php echo  $time_spent_on_the_course ?></td>
                </tr>
                <tr>
                    <td align="right">
                        <?php
                        echo get_lang('Progress').' ';
                        Display :: display_icon('info3.gif', get_lang('ScormAndLPProgressTotalAverage'), array ('align' => 'absmiddle', 'hspace' => '3px'));?>
                    </td>
                    <td align="left"><?php echo $avg_student_progress.'%' ?></td>
                </tr>
                <tr>
                    <td align="right">
                        <?php
                        echo get_lang('Score').' ';
                        Display :: display_icon('info3.gif', get_lang('ScormAndLPTestTotalAverage'), array ('align' => 'absmiddle', 'hspace' => '3px')); ?>
                    </td>
                    <td align="left"><?php if (is_numeric($avg_student_score)) { echo $avg_student_score.'%';} else { echo $avg_student_score ;}  ?></td>
                </tr>
                <?php
                if (!empty($nb_login)) {
                    echo '<tr><td align="right">'.get_lang('CountToolAccess').'</td>';
                    echo '<td align="left">'.$nb_login.'</td>';
                    echo '</tr>';
                }
            } ?>
        </table>
    </td>
    </tr>
    </table>
    <?php

    $table_title = '';

    if (!empty($session_id)) {
        $session_name = api_get_session_name($session_id);
        $table_title  = ($session_name? Display::return_icon('session.png', get_lang('Session'), array(), ICON_SIZE_SMALL).' '.$session_name.' ':'');
    }
    if (!empty($info_course['title'])) {
        $table_title .= ($info_course ? Display::return_icon('course.png', get_lang('Course'), array(), ICON_SIZE_SMALL).' '.$info_course['title'].'  ':'');
    }

    echo Display::page_subheader($table_title);

    if (empty($_GET['details'])) {
        $csv_content[] = array();
        $csv_content[] = array(
            get_lang('Session', ''),
            get_lang('Course', ''),
            get_lang('Time', ''),
            get_lang('Progress', ''),
            get_lang('Score', ''),
            get_lang('AttendancesFaults', ''),
            get_lang('Evaluations')
        );

        $attendance = new Attendance();

        foreach ($courses_in_session as $key => $courses) {
            $session_id   = $key;
            $session_info = api_get_session_info($session_id);
            $session_name = $session_info['name'];
            $date_start = '';

            if (!empty($session_info['date_start']) && $session_info['date_start'] != '0000-00-00') {
                $date_start = api_format_date($session_info['date_start'], DATE_FORMAT_SHORT);
            }

            $date_end = '';
            if (!empty($session_info['date_end']) && $session_info['date_end'] != '0000-00-00') {
                $date_end = api_format_date($session_info['date_end'], DATE_FORMAT_SHORT);
            }
            if (!empty($date_start) && !empty($date_end)) {
                $date_session = get_lang('From') . ' ' . $date_start . ' ' . get_lang('Until') . ' ' . $date_end;
            }
            $title = '';
            if (empty($session_id)) {
                $title = Display::return_icon('course.png', get_lang('Courses'), array(), ICON_SIZE_SMALL).' '.get_lang('Courses');
            } else {
                $title = Display::return_icon('session.png', get_lang('Session'), array(), ICON_SIZE_SMALL).' '.$session_name.($date_session?' ('.$date_session.')':'');
            }

            // Courses
            echo '<h3>'.$title.'</h3>';
            echo '<table class="data_table">';
            echo '<tr>
				<th>'.get_lang('Course').'</th>
				<th>'.get_lang('Time').'</th>
				<th>'.get_lang('Progress').'</th>
				<th>'.get_lang('Score').'</th>
				<th>'.get_lang('AttendancesFaults').'</th>
				<th>'.get_lang('Evaluations').'</th>
				<th>'.get_lang('Details').'</th>
			</tr>';

            if (!empty($courses)) {
                foreach ($courses as $course_code) {

                    if (CourseManager :: is_user_subscribed_in_course($student_id, $course_code, true)) {
                        $course_info = CourseManager :: get_course_information($course_code);

                        $time_spent_on_course = api_time_to_hms(Tracking :: get_time_spent_on_the_course($user_info['user_id'], $course_code, $session_id));

                        // get average of faults in attendances by student
                        $results_faults_avg = $attendance->get_faults_average_by_course($student_id, $course_code, $session_id);
                        if (!empty($results_faults_avg['total'])) {
                            if (api_is_drh()) {
                                $attendances_faults_avg = '<a title="'.get_lang('GoAttendance').'" href="'.api_get_path(WEB_CODE_PATH).'attendance/index.php?cidReq='.$course_code.'&id_session='.$session_id.'&student_id='.$student_id.'">'.$results_faults_avg['faults'].'/'.$results_faults_avg['total'].' ('.$results_faults_avg['porcent'].'%)</a>';
                            } else {
                                $attendances_faults_avg = $results_faults_avg['faults'].'/'.$results_faults_avg['total'].' ('.$results_faults_avg['porcent'].'%)';
                            }
                        } else {
                            $attendances_faults_avg = '0/0 (0%)';
                        }

                        // Get evaluations by student
                        $cats = Category::load(null, null, $course_code, null, null, $session_id);

                        $scoretotal = array();
                        if (isset($cats) && isset($cats[0])) {
                            if (!empty($session_id)) {
                                $scoretotal= $cats[0]->calc_score($student_id, $course_code, $session_id);
                            } else {
                                $scoretotal= $cats[0]->calc_score($student_id, $course_code);
                            }
                        }

                        $scoretotal_display = '0/0 (0%)';
                        if (!empty($scoretotal)) {
                            $scoretotal_display =  round($scoretotal[0],1).'/'.round($scoretotal[1],1).' ('.round(($scoretotal[0] / $scoretotal[1]) * 100,2) . ' %)';
                        }

                        $progress = Tracking::get_avg_student_progress($user_info['user_id'], $course_code, null, $session_id);
                        $score = Tracking :: get_avg_student_score($user_info['user_id'], $course_code, null, $session_id);
                        $progress = empty($progress) ? '0%' : $progress.'%';
                        $score = empty($score) ? '0%' : $score.'%';

                        $csv_content[] = array(
                            $session_name,
                            $course_info['title'],
                            $time_spent_on_course,
                            $progress,
                            $score,
                            $attendances_faults_avg,
                            $scoretotal_display
                        );

                        echo '<tr>
                        <td >'.$course_info['title'].'</td>
                        <td >'.$time_spent_on_course .'</td>
                        <td >'.$progress.'</td>
                        <td >'.$score.'</td>
                        <td >'.$attendances_faults_avg.'</td>
                        <td >'.$scoretotal_display.'</td>';

                        if (isset ($_GET['id_coach']) && intval($_GET['id_coach']) != 0) {
                            echo '<td width="10"><a href="'.api_get_self().'?student='.$user_info['user_id'].'&details=true&course='.$course_info['code'].'&id_coach='.Security::remove_XSS($_GET['id_coach']).'&origin='.Security::remove_XSS($_GET['origin']).'&id_session='.$session_id.'#infosStudent"><img src="'.api_get_path(WEB_IMG_PATH).'2rightarrow.gif" border="0" /></a></td>';
                        } else {
                            echo '<td width="10"><a href="'.api_get_self().'?student='.$user_info['user_id'].'&details=true&course='.$course_info['code'].'&origin='.Security::remove_XSS($_GET['origin']).'&id_session='.$session_id.'#infosStudent"><img src="'.api_get_path(WEB_IMG_PATH).'2rightarrow.gif" border="0" /></a></td>';
                        }
                        echo '</tr>';
                    }
                }
            } else {
                echo "<tr><td colspan='5'>".get_lang('NoCourse')."</td></tr>";
            }
            echo '</table>';
        }
    } else {
        $csv_content[] = array();
        $csv_content[] = array(str_replace('&nbsp;', '', $table_title));
        $t_lp = Database :: get_course_table(TABLE_LP_MAIN);

        // csv export headers
        $csv_content[] = array();
        $csv_content[] = array(
            get_lang('Learnpath'),
            get_lang('Time'),
            get_lang('AverageScore'),
            get_lang('LatestAttemptAverageScore'),
            get_lang('Progress'),
            get_lang('LastConnexion')
        );

        if (empty($session_id)) {
            $sql_lp = " SELECT lp.name, lp.id FROM $t_lp lp
                    WHERE session_id = 0 AND c_id = {$info_course['real_id']}
                    ORDER BY lp.display_order";
        } else {
            $sql_lp = " SELECT lp.name, lp.id FROM $t_lp lp
    	            WHERE c_id = {$info_course['real_id']}
                    ORDER BY lp.display_order";
        }
        $rs_lp = Database::query($sql_lp);
        if (Database :: num_rows($rs_lp) > 0) {
            ?>
            <!-- LPs-->
            <table class="data_table">
            <tr>
                <th><?php echo get_lang('Learnpaths');?></th>
                <th><?php echo get_lang('Time').' '; Display :: display_icon('info3.gif', get_lang('TotalTimeByCourse'), array ('align' => 'absmiddle', 'hspace' => '3px')); ?></th>
                <th><?php echo get_lang('AverageScore').' '; Display :: display_icon('info3.gif', get_lang('AverageIsCalculatedBasedInAllAttempts'), array ( 'align' => 'absmiddle', 'hspace' => '3px')); ?></th>
                <th><?php echo get_lang('LatestAttemptAverageScore').' '; Display :: display_icon('info3.gif', get_lang('AverageIsCalculatedBasedInTheLatestAttempts'), array ( 'align' => 'absmiddle', 'hspace' => '3px')); ?></th>
                <th><?php echo get_lang('Progress').' '; Display :: display_icon('info3.gif', get_lang('LPProgressScore'), array ('align' => 'absmiddle','hspace' => '3px')); ?></th>
                <th><?php echo get_lang('LastConnexion').' '; Display :: display_icon('info3.gif', get_lang('LastTimeTheCourseWasUsed'), array ('align' => 'absmiddle','hspace' => '3px')); ?></th>
                <?php
                echo '<th>'.get_lang('Details').'</th>';
                if (api_is_allowed_to_edit()) {
                    echo '<th>'.get_lang('ResetLP').'</th>';
                }
                ?>
            </tr>
            <?php

            $i = 0;
            while ($learnpath = Database :: fetch_array($rs_lp)) {

                $lp_id = intval($learnpath['id']);
                $lp_name = $learnpath['name'];
                $any_result = false;

                // Get progress in lp
                $progress = Tracking::get_avg_student_progress(
                    $student_id,
                    $course_code,
                    array($lp_id),
                    $session_id
                );

                if ($progress === null) {
                    $progress = '0%';
                }  else {
                    $any_result = true;
                }

                // Get time in lp
                $total_time = Tracking::get_time_spent_in_lp(
                    $student_id,
                    $course_code,
                    array($lp_id),
                    $session_id
                );

                if (!empty($total_time)) {
                    $any_result = true;
                }

                // Get last connection time in lp
                $start_time = Tracking::get_last_connection_time_in_lp(
                    $student_id,
                    $course_code,
                    $lp_id,
                    $session_id
                );

                if (!empty($start_time)) {
                    $start_time = api_convert_and_format_date($start_time, DATE_TIME_FORMAT_LONG);
                } else {
                    $start_time =  '-';
                }

                if (!empty($total_time)) $any_result = true;

                // Quiz in lp
                $score = Tracking::get_avg_student_score(
                    $student_id,
                    $course_code,
                    array($lp_id),
                    $session_id
                );

                // Latest exercise results in a LP
                $score_latest = Tracking:: get_avg_student_score(
                    $student_id,
                    $course_code,
                    array($lp_id),
                    $session_id,
                    false,
                    true
                );

                if ($i % 2 == 0) $css_class = "row_even";
                else $css_class = "row_odd";

                $i++;

                // csv export content
                $csv_content[] = array (
                    api_html_entity_decode(stripslashes($lp_name), ENT_QUOTES, $charset),
                    api_time_to_hms($total_time),
                    $score . '%',
                    $score_latest . '%',
                    $progress.'%',
                    $start_time
                );

                echo '<tr class="'.$css_class.'">';

                echo Display::tag('td', stripslashes($lp_name));
                echo Display::tag('td', api_time_to_hms($total_time));

                if (!is_null($score)) {
                    if (is_numeric($score)) {
                        $score = $score.'%';
                    }
                }
                echo Display::tag('td', $score);

                if (!is_null($score_latest)) {
                    if (is_numeric($score_latest)) {
                        $score_latest = $score_latest.'%';
                    }
                }
                echo Display::tag('td', $score_latest);

                if (is_numeric($progress)) {
                    $progress = $progress.'%';
                } else {
                    $progress = '-';
                }

                echo Display::tag('td', $progress);
                //Do not change with api_convert_and_format_date, because this value came from the lp_item_view table
                //which implies several other changes not a priority right now
                echo Display::tag('td', $start_time);

                if ($any_result === true) {
                    $from = '';
                    if ($from_myspace) {
                        $from ='&from=myspace';
                    }
                    $link = Display::url(
                        '<img src="../img/2rightarrow.gif" border="0" />',
                        'lp_tracking.php?cidReq='.Security::remove_XSS($_GET['course']).'&course='.Security::remove_XSS($_GET['course']).$from.'&origin='.Security::remove_XSS($_GET['origin']).'&lp_id='.$learnpath['id'].'&student_id='.$user_info['user_id'].'&id_session='.$session_id
                    );
                    echo Display::tag('td', $link);
                }

                if (api_is_allowed_to_edit()) {
                    echo '<td>';
                    if ($any_result === true) {
                        echo '<a href="myStudents.php?action=reset_lp&sec_token='.$token.'&cidReq='.Security::remove_XSS($_GET['course']).'&course='.Security::remove_XSS($_GET['course']).'&details='.Security::remove_XSS($_GET['details']).'&origin='.Security::remove_XSS($_GET['origin']).'&lp_id='.$learnpath['id'].'&student='.$user_info['user_id'].'&details=true&id_session='.Security::remove_XSS($_GET['id_session']).'">';
                        echo Display::return_icon('clean.png',get_lang('Clean'),'',ICON_SIZE_SMALL).'</a>';
                        echo '</a>';
                    }
                    echo '</td>';
                    echo '</tr>';
                }
                $data_learnpath[$i][] = $lp_name;
                $data_learnpath[$i][] = $progress . '%';
            }
        } else {
            //echo '<tr><td colspan="6">'.get_lang('NoLearnpath').'</td></tr>';
        }
        ?>
        </table>
        <!-- line about exercises -->
        <table class="data_table">
        <tr>
            <th><?php echo get_lang('Exercices'); ?></th>
            <th><?php echo get_lang('LearningPath');?></th>
            <th><?php echo get_lang('AvgCourseScore').' '.Display :: return_icon('info3.gif', get_lang('AverageScore'), array('align' => 'absmiddle', 'hspace' => '3px')) ?></th>
            <th><?php echo get_lang('Attempts'); ?></th>
            <th><?php echo get_lang('LatestAttempt'); ?></th>
            <th><?php echo get_lang('AllAttempts'); ?></th>
        </tr>
        <?php

        $csv_content[] = array();
        $csv_content[] = array(
            get_lang('Exercices'),
            get_lang('LearningPath'),
            get_lang('AvgCourseScore'),
            get_lang('Attempts')
        );

        $t_quiz = Database :: get_course_table(TABLE_QUIZ_TEST);
        $sql = "SELECT quiz.title, id FROM " . $t_quiz . " AS quiz
                WHERE
                    quiz.c_id =  ".$info_course['real_id']." AND
                    (quiz.session_id = $session_id OR quiz.session_id = 0) AND
                    active IN (0, 1)
                ORDER BY quiz.title ASC ";

        $result_exercices = Database::query($sql);
        $i = 0;
        if (Database :: num_rows($result_exercices) > 0) {
            while ($exercices = Database :: fetch_array($result_exercices)) {
                $exercise_id = intval($exercices['id']);
                $count_attempts   = Tracking::count_student_exercise_attempts($student_id, $course_code, $exercise_id, 0, 0, $session_id, 2);
                $score_percentage = Tracking::get_avg_student_exercise_score($student_id, $course_code, $exercise_id, $session_id, 1, 0);

                if (!isset($score_percentage) && $count_attempts > 0) {
                    $scores_lp = Tracking::get_avg_student_exercise_score($student_id, $course_code, $exercise_id, $session_id, 2, 1);
                    $score_percentage = $scores_lp[0];
                    $lp_name = $scores_lp[1];
                } else {
                    $lp_name = '-';
                }
                $lp_name = !empty($lp_name) ? $lp_name : get_lang('NoLearnpath');

                if ($i % 2) {
                    $css_class = 'row_odd';
                } else {
                    $css_class = 'row_even';
                }

                echo '<tr class="'.$css_class.'"><td>'.$exercices['title'].'</td>';
                echo '<td>';

                if (!empty($lp_name)) {
                    echo $lp_name;
                } else {
                    echo '-';
                }

                echo '</td>';
                echo '<td>';

                if ($count_attempts > 0) {
                    echo $score_percentage . '%';
                } else {
                    echo '-';
                    $score_percentage = 0;
                }

                echo '</td>';
                echo '<td>'.$count_attempts.'</td>';
                echo '<td>';

                $sql_last_attempt = 'SELECT exe_id FROM ' . $tbl_stats_exercices . '
				                     WHERE  exe_exo_id      ="'.$exercise_id.'" AND
				                            exe_user_id     ="'.$student_id.'" AND
				                            exe_cours_id    ="'.$course_code.'" AND
                                            session_id      ="'.$session_id.'" AND
				                            status          = ""
				                            ORDER BY exe_date DESC LIMIT 1';
                $result_last_attempt = Database::query($sql_last_attempt);
                if (Database :: num_rows($result_last_attempt) > 0) {
                    $id_last_attempt = Database :: result($result_last_attempt, 0, 0);
                    if ($count_attempts > 0)
                        echo '<a href="../exercice/exercise_show.php?id=' . $id_last_attempt . '&cidReq='.$course_code.'&session_id='.$session_id.'&student='.$student_id.'&origin='.(empty($_GET['origin'])?'tracking':Security::remove_XSS($_GET['origin'])).'"> <img src="' . api_get_path(WEB_IMG_PATH) . 'quiz.gif" border="0" /> </a>';
                }
                echo '</td>';

                echo '<td>';
                $all_attempt_url = "../exercice/exercise_report.php?exerciseId=$exercise_id&cidReq=$course_code&filter_by_user=$student_id&id_session=$session_id";
                echo Display::url(Display::return_icon('test_results.png', get_lang('AllAttempts'), array(), ICON_SIZE_SMALL), $all_attempt_url );

                echo '</td></tr>';
                $data_exercices[$i][] = $exercices['title'];
                $data_exercices[$i][] = $score_percentage . '%';
                $data_exercices[$i][] = $count_attempts;

                $csv_content[] = array(
                    $exercices['title'],
                    $lp_name,
                    $score_percentage,
                    $count_attempts
                );

                $i++;

            }
        } else {
            echo '<tr><td colspan="6">'.get_lang('NoExercise').'</td></tr>';
        }
        echo '</table>';

        //@when using sessions we do not show the survey list
        if (empty($session_id)) {
            $survey_list = survey_manager::get_surveys($course_code, $session_id);

            $survey_data = array();
            foreach($survey_list as $survey) {
                $user_list = survey_manager::get_people_who_filled_survey($survey['survey_id'], false, $info_course['real_id']);
                $survey_done = Display::return_icon("accept_na.png", get_lang('NoAnswer'), array(), ICON_SIZE_SMALL);
                if (in_array($student_id, $user_list)) {
                    $survey_done = Display::return_icon("accept.png", get_lang('Answered'), array(), ICON_SIZE_SMALL);
                }
                $data = array('title' => $survey['title'], 'done' => $survey_done);
                $survey_data[] = $data;
            }

            if (!empty($survey_list)) {
                $table = new HTML_Table(array('class' => 'data_table'));
                $header_names = array(get_lang('Survey'), get_lang('Answered'));
                $row = 0;
                $column = 0;
                foreach ($header_names as $item) {
                    $table->setHeaderContents($row, $column, $item);
                    $column++;
                }
                $row = 1;
                if (!empty($survey_data)) {
                    foreach ($survey_data as $data) {
                        $column = 0;
                        $table->setCellContents($row, $column, $data);
                        $class = 'class="row_odd"';
                        if($row % 2) {
                            $class = 'class="row_even"';
                        }
                        $table->setRowAttributes($row, $class, true);
                        $column++;
                        $row++;
                    }
                }
                echo $table->toHtml();
            }
        }

        // line about other tools
        echo '<table class="data_table">';

        $csv_content[] = array ();
        $nb_assignments 		= Tracking::count_student_assignments($student_id, $course_code, $session_id);
        $messages 				= Tracking::count_student_messages($student_id, $course_code, $session_id);
        $links 					= Tracking::count_student_visited_links($student_id, $course_code, $session_id);
        $chat_last_connection 	= Tracking::chat_last_connection($student_id, $course_code, $session_id);
        $documents				= Tracking::count_student_downloaded_documents($student_id, $course_code, $session_id);
        $uploaded_documents		= Tracking::count_student_uploaded_documents($student_id, $course_code, $session_id);

        $csv_content[] = array(
            get_lang('OtherTools')
        );

        $csv_content[] = array(
            get_lang('Student_publication'),
            $nb_assignments
        );
        $csv_content[] = array(
            get_lang('Messages'),
            $messages
        );
        $csv_content[] = array(
            get_lang('LinksDetails'),
            $links
        );
        $csv_content[] = array(
            get_lang('DocumentsDetails'),
            $documents
        );
        $csv_content[] = array(
            get_lang('UploadedDocuments'),
            $uploaded_documents
        );
        $csv_content[] = array(
            get_lang('ChatLastConnection'),
            $chat_last_connection
        );
        ?>
        <tr>
            <th colspan="2"><?php echo get_lang('OtherTools'); ?></th>
        </tr>
        <tr><!-- assignments -->
            <td width="40%"><?php echo get_lang('Student_publication') ?></td>
            <td><?php echo $nb_assignments ?></td>
        </tr>
        <tr><!-- messages -->
            <td><?php echo get_lang('Forum').' - '.get_lang('NumberOfPostsForThisUser') ?></td>
            <td><?php echo $messages ?></td>
        </tr>
        <tr><!-- links -->
            <td><?php echo get_lang('LinksDetails') ?></td>
            <td><?php echo $links ?></td>
        </tr>
        <tr><!-- downloaded documents -->
            <td><?php echo get_lang('DocumentsDetails') ?></td>
            <td><?php echo $documents ?></td>
        </tr>
        <tr><!-- uploaded documents -->
            <td><?php echo get_lang('UploadedDocuments') ?></td>
            <td><?php echo $uploaded_documents ?></td>
        </tr>
        <tr><!-- Chats -->
            <td><?php echo get_lang('ChatLastConnection') ?></td>
            <td><?php echo $chat_last_connection; ?></td>
        </tr>
        </table>
        </td>
        </tr>
        </table>

    <?php
    } //end details
}
if ($export_csv) {
    ob_end_clean();
    Export :: export_table_csv($csv_content, 'reporting_student');
    exit;
}

Display :: display_footer();
