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

/**
 * Homepage for the MySpace directory
 * @package chamilo.reporting
 */
// resetting the course id
$cidReset = true;

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

$htmlHeadXtra[] = api_get_jqgrid_js();
// the section (for the tabs)
$this_section = SECTION_TRACKING;
//for HTML editor repository
unset($_SESSION['this_section']);

ob_start();

$export_csv  = isset($_GET['export']) && $_GET['export'] == 'csv' ? true : false;
$display 	 = isset($_GET['display']) ? Security::remove_XSS($_GET['display']) : null;
$csv_content = array();
$nameTools = get_lang('MySpace');

$user_id = api_get_user_id();
$session_id = isset($_GET['session_id']) ? intval($_GET['session_id']) : 0;

$is_coach = api_is_coach($session_id);
$is_platform_admin 	= api_is_platform_admin();
$is_drh 			= api_is_drh();
$is_session_admin 	= api_is_session_admin();

$count_sessions 	= 0;
$count_courses		= 0;
$title 				= null;

// Access control
api_block_anonymous_users();

if (!$export_csv) {
    Display :: display_header($nameTools);
}

// Database table definitions
$tbl_user = Database::get_main_table(TABLE_MAIN_USER);
$tbl_sessions = Database::get_main_table(TABLE_MAIN_SESSION);
$tbl_session_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);

/* MAIN CODE  */

if ($is_session_admin) {
    header('location:session.php');
    exit;
}

// Get views
$views = array('admin', 'teacher', 'coach', 'drh');
$view  = 'teacher';
if (isset($_GET['view']) && in_array($_GET['view'], $views)) {
    $view = $_GET['view'];
}

$menu_items = array();

if ($is_platform_admin) {
    if ($view == 'admin') {
        $title = get_lang('CoachList');
        $menu_items[] = Display::url(
            Display::return_icon('teacher.png', get_lang('TeacherInterface'), array(), ICON_SIZE_MEDIUM),
            api_get_self().'?view=teacher'
        );
        $menu_items[] = Display::url(
            Display::return_icon('star_na.png', get_lang('AdminInterface'), array(), ICON_SIZE_MEDIUM),
            api_get_path(WEB_CODE_PATH).'mySpace/admin_view.php'
        );
        $menu_items[] = Display::url(
            Display::return_icon('quiz.png', get_lang('ExamTracking'), array(), ICON_SIZE_MEDIUM),
            api_get_path(WEB_CODE_PATH).'tracking/exams.php'
        );
        $menu_items[] = Display::url(
            Display::return_icon('statistics.png', get_lang('CurrentCoursesReport'), array(), ICON_SIZE_MEDIUM),
            api_get_path(WEB_CODE_PATH).'mySpace/current_courses.php'
        );
    } else {
        $menu_items[] = Display::url(
            Display::return_icon('teacher_na.png', get_lang('TeacherInterface'), array(), ICON_SIZE_MEDIUM), '');
        $menu_items[] = Display::url(
            Display::return_icon('star.png', get_lang('AdminInterface'), array(), ICON_SIZE_MEDIUM),
            //api_get_path(WEB_CODE_PATH).'tracking/course_session_report.php?view=admin'
            api_get_path(WEB_CODE_PATH).'mySpace/admin_view.php'
        );
        $menu_items[] = Display::url(
            Display::return_icon('quiz.png', get_lang('ExamTracking'), array(), ICON_SIZE_MEDIUM),
            api_get_path(WEB_CODE_PATH).'tracking/exams.php'
        );
        $menu_items[] = Display::url(
            Display::return_icon('statistics.png', get_lang('CurrentCoursesReport'), array(), ICON_SIZE_MEDIUM),
            api_get_path(WEB_CODE_PATH).'mySpace/current_courses.php'
        );
    }
}

if ($is_drh) {
	$view = 'drh';
    $menu_items[] = Display::url(Display::return_icon('user_na.png', get_lang('Students'), array(), ICON_SIZE_MEDIUM), '#');
    $menu_items[] = Display::url(Display::return_icon('teacher.png', get_lang('Trainers'), array(), ICON_SIZE_MEDIUM), 'teachers.php');
    $menu_items[] = Display::url(Display::return_icon('course.png', get_lang('Courses'), array(), ICON_SIZE_MEDIUM), 'course.php');
    $menu_items[] = Display::url(Display::return_icon('session.png', get_lang('Sessions'), array(), ICON_SIZE_MEDIUM), 'session.php');
    $menu_items[] = Display::url(Display::return_icon('empty_evaluation.png', get_lang('CompanyReport'), array(), ICON_SIZE_MEDIUM), 'company_reports.php');
    $menu_items[] = Display::url(Display::return_icon('evaluation_rate.png', get_lang('CompanyReportResumed'), array(), ICON_SIZE_MEDIUM), 'company_reports_resumed.php');
}

echo '<div id="actions" class="actions">';
echo '<span style="float:right">';

if ($display == 'useroverview' || $display == 'sessionoverview' || $display == 'courseoverview') {
    echo '<a href="'.api_get_self().'?display='.$display.'&export=csv&view='.$view.'">';
    echo Display::return_icon("export_csv.png", get_lang('ExportAsCSV'), array(), 32);
    echo '</a>';
}
echo '<a href="javascript: void(0);" onclick="javascript: window.print()">'.
    Display::return_icon('printer.png', get_lang('Print'), '', ICON_SIZE_MEDIUM).'</a>';
echo '</span>';

if (!empty($session_id) &&
    !in_array($display, array('accessoverview','lpprogressoverview','progressoverview','exerciseprogress', 'surveyoverview'))
) {
    echo '<a href="index.php">'.Display::return_icon('back.png', get_lang('Back'), '', ICON_SIZE_MEDIUM).'</a>';
    if (!api_is_platform_admin()) {
        if (api_get_setting('add_users_by_coach') == 'true') {
            if ($is_coach) {
                echo "<div align=\"right\">";
                echo '<a href="user_import.php?id_session='.$session_id.'&action=export&amp;type=xml">'.
                        Display::return_icon('excel.gif', get_lang('ImportUserList')).'&nbsp;'.get_lang('ImportUserList').'</a>';
                echo "</div><br />";
            }
        }
    } else {
        echo "<div align=\"right\">";
        echo '<a href="user_import.php?id_session='.$session_id.'&action=export&amp;type=xml">'.
                Display::return_icon('excel.gif', get_lang('ImportUserList')).'&nbsp;'.get_lang('ImportUserList').'</a>';
        echo "</div><br />";
    }
} else {
	echo Display::url(
        Display::return_icon('stats.png', get_lang('MyStats'),'',ICON_SIZE_MEDIUM),
        api_get_path(WEB_CODE_PATH)."auth/my_progress.php"
    );
    echo Display::url(
        Display::return_icon("certificate_list.png", get_lang("GradebookSeeListOfStudentsCertificates"), array(), ICON_SIZE_MEDIUM),
        api_get_path(WEB_CODE_PATH) . "gradebook/certificate_report.php"
    );
}

// Actions menu
$nb_menu_items = count($menu_items);
if (empty($session_id) ||
    in_array($display, array('accessoverview','lpprogressoverview', 'progressoverview', 'exerciseprogress', 'surveyoverview'))
) {
    if ($nb_menu_items > 1) {
        foreach ($menu_items as $key => $item) {
            echo $item;
        }
    }
}

echo '</div>';

$userId  = api_get_user_id();
$stats = Tracking::getStats($userId);

$students = $stats['students'];
$teachers = $stats['teachers'];
$humanResourcesUsers = $stats['drh'];
$assignedCourses = $stats['assignedCourses'];
$courses = $stats['courses'];
$sessions = $stats['sessions'];

$sessionIdList = array();
if (!empty($sessions)) {
    foreach ($sessions as $session) {
        $sessionIdList[] = $session['id'];
    }
}

// Courses for the user
$countAssignedCourses = count($assignedCourses);
$count_courses = count($courses);

// Sessions for the user
$count_sessions = count($sessions);

$total_time_spent = 0;
$total_courses = 0;
$avg_total_progress = 0;
$avg_results_to_exercises = 0;
$nb_inactive_students = 0;
$nb_posts = $nb_assignments = 0;
$inactiveTime = time() - (3600 * 24 * 7);
$nb_students = 0;
$numberTeachers = 0;
$countHumanResourcesUsers = 0;
$daysAgo = 7;
$studentIds = array();
if (!empty($students)) {
    // Students
    $nb_students = count($students);
    $studentIds = array_values($students);
    $countHumanResourcesUsers = count($humanResourcesUsers);

    // average progress
    $avg_total_progress = $progress / $nb_students;
    // average assignments
    $nb_assignments = $countAssignments / $nb_students;
    $avg_courses_per_student = $count_courses / $nb_students;
}

if (!empty($teachers)) {
    $numberTeachers = count($teachers);
}

// Inactive students
//$countInactiveUsers = Tracking::getInactiveUsers($studentIds, $daysAgo);
$totalTimeSpent = Tracking::get_time_spent_on_the_platform($studentIds);
$posts = Tracking::count_student_messages($studentIds);
$countAssignments = Tracking::count_student_assignments($studentIds);
$progress  = Tracking::get_avg_student_progress($studentIds);
$averageScore = Tracking::getAverageStudentScore($studentIds);
$avg_results_to_exercises = $averageScore;

// average posts
$nb_posts = $posts;
$avg_time_spent = $totalTimeSpent;

$linkAddUser = null;
$linkCourseDetailsAsTeacher = null;
$linkAddCourse = null;
$linkAddSession = null;

if (api_is_platform_admin()) {
    $linkAddUser = ' '.Display::url(
        Display::return_icon('2rightarrow.gif', get_lang('Add')),
        api_get_path(WEB_CODE_PATH).'admin/dashboard_add_users_to_user.php?user='.api_get_user_id(),
        array('class' => '')
    );
    $linkCourseDetailsAsTeacher = ' '.Display::url(
        Display::return_icon('2rightarrow.gif', get_lang('Details')),
        api_get_path(WEB_CODE_PATH).'mySpace/course.php',
        array('class' => '')
    );
    $linkAddCourse = ' '.Display::url(
        Display::return_icon('2rightarrow.gif', get_lang('Details')),
        api_get_path(WEB_CODE_PATH).'mySpace/course.php?follow',
        array('class' => '')
    );
    $linkAddSession = ' '.Display::url(
        Display::return_icon('2rightarrow.gif', get_lang('Add')),
        api_get_path(WEB_CODE_PATH).'admin/dashboard_add_sessions_to_user.php?user='.api_get_user_id(),
        array('class' => '')
    );
}

echo Display::page_subheader(get_lang('Overview'));
echo '<div class="report_section">
        <table class="table table-bordered table-striped">
            <tr>
                <td>'.Display::url(
                    get_lang('FollowedStudents'),
                    api_get_path(WEB_CODE_PATH).'mySpace/student.php'
                ).'</td>
                <td align="right">'.$nb_students.'</td>
            </tr>
            <tr>
                <td>'.Display::url(
                    get_lang('FollowedTeachers'),
                    api_get_path(WEB_CODE_PATH).'mySpace/teachers.php'
                ).
                '</td>
                <td align="right">'.$numberTeachers.'</td>
            </tr>
            <tr>
                <td>'.Display::url(
                get_lang('FollowedHumanResources'),
                api_get_path(WEB_CODE_PATH).'mySpace/users.php?status='.DRH
            ).
            '</td>
            <td align="right">'.$countHumanResourcesUsers.'</td>
            </tr>
            <tr>
             <td>'.Display::url(
                get_lang('FollowedUsers'),
                api_get_path(WEB_CODE_PATH).'mySpace/users.php'
            ).
            '</td>
                <td align="right">'.($nb_students + $numberTeachers + $countHumanResourcesUsers).$linkAddUser.'</td>
            </tr>
            <tr>
                <td>'.Display::url(
                    get_lang('AssignedCourses'),
                    api_get_path(WEB_CODE_PATH).'mySpace/course.php'
                ).
                '</td>
                <td align="right">'.$count_courses.$linkCourseDetailsAsTeacher.'</td>
            </tr>
            <tr>
                <td>'.Display::url(
                    get_lang('FollowedCourses'),
                    api_get_path(WEB_CODE_PATH).'mySpace/course.php?follow'
                ).
                '</td>
                <td align="right">'.$countAssignedCourses.$linkAddCourse.'</td>
            </tr>
            <tr>
                <td>'.Display::url(
                    get_lang('FollowedSessions'),
                    api_get_path(WEB_CODE_PATH).'mySpace/session.php'
                ).
                '</td>
    <td align="right">'.$count_sessions.$linkAddSession.'</td>
            </tr>
            </table>';
echo '</div>';

echo Display::page_subheader(get_lang('Students').' ('.$nb_students.')');

if ($export_csv) {
    //csv part
    $csv_content[] = array(get_lang('Students'));
    $csv_content[] = array(get_lang('InactivesStudents'), $nb_inactive_students);
    $csv_content[] = array(get_lang('AverageTimeSpentOnThePlatform'), $avg_time_spent);
    $csv_content[] = array(get_lang('AverageCoursePerStudent'), $avg_courses_per_student);
    $csv_content[] = array(get_lang('AverageProgressInLearnpath'), is_null($avg_total_progress) ? null : round($avg_total_progress, 2).'%');
    $csv_content[] = array(get_lang('AverageResultsToTheExercices'), is_null($avg_results_to_exercises) ? null : round($avg_results_to_exercises, 2).'%');
    $csv_content[] = array(get_lang('AveragePostsInForum'), $nb_posts);
    $csv_content[] = array(get_lang('AverageAssignments'), $nb_assignments);
    $csv_content[] = array();
} else {
    $lastConnectionDate = api_get_utc_datetime(strtotime('15 days ago'));
    $countActiveUsers = SessionManager::getCountUserTracking(null, 1, null, array(), array());
    $countSleepingTeachers = SessionManager::getTeacherTracking(
        api_get_user_id(),
        1,
        $lastConnectionDate,
        true,
        $sessionIdList
    );

    $countSleepingStudents = SessionManager::getCountUserTracking(
        null,
        1,
        $lastConnectionDate,
        $sessionIdList,
        $studentIds
    );

    $form = new FormValidator('search_user', 'get', api_get_path(WEB_CODE_PATH).'mySpace/student.php');
    $form = Tracking::setUserSearchForm($form);
    $form->display();

    // html part
    echo '<div class="report_section">
            <table class="table table-bordered table-striped">
                <tr>
                    <td>'.get_lang('AverageCoursePerStudent').'</td>
                    <td align="right">'.(is_null($avg_courses_per_student) ? '' : round($avg_courses_per_student, 2)).'</td>
                </tr>
                <tr>
                    <td>'.get_lang('InactivesStudents').'</td>
                    <td align="right">'.$nb_inactive_students.'</td>
                </tr>
                <tr>
                    <td>'.get_lang('AverageTimeSpentOnThePlatform').'</td>
                    <td align="right">'.(is_null($avg_time_spent) ? '' : api_time_to_hms($avg_time_spent)).'</td>
                </tr>
                <tr>
                    <td>'.get_lang('AverageProgressInLearnpath').'</td>
                    <td align="right">'.(is_null($avg_total_progress) ? '' : round($avg_total_progress, 2).'%').'</td>
                </tr>
                <tr>
                    <td>'.get_lang('AvgCourseScore').'</td>
                    <td align="right">'.(is_null($avg_results_to_exercises) ? '' : round($avg_results_to_exercises, 2).'%').'</td>
                </tr>
                <tr>
                    <td>'.get_lang('AveragePostsInForum').'</td>
                    <td align="right">'.(is_null($nb_posts) ? '' : round($nb_posts, 2)).'</td>
                </tr>
                <tr>
                    <td>'.get_lang('AverageAssignments').'</td>
                    <td align="right">'.(is_null($nb_assignments) ? '' : round($nb_assignments, 2)).'</td>
                </tr>
            </table>
         </div>';
}


// Send the csv file if asked
if ($export_csv) {
	ob_end_clean();
	Export :: arrayToCsv($csv_content, 'reporting_index');
	exit;
}

if (!$export_csv) {
	Display::display_footer();
}