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

/**
 * Exercise results from Learning paths.
 *
 * @todo implement pagination
 *
 * @package chamilo.tracking
 */
require_once __DIR__.'/../inc/global.inc.php';

$this_section = SECTION_TRACKING;

$is_allowedToTrack = Tracking::isAllowToTrack(api_get_session_id());

if (!$is_allowedToTrack) {
    api_not_allowed(true);
}

$export_to_csv = false;
if (isset($_GET['export'])) {
    $export_to_csv = true;
}

$global = false;
if (api_is_platform_admin()) {
    $global = true;
}

if ($global) {
    $temp_course_list = CourseManager :: get_courses_list();
    foreach ($temp_course_list as $temp_course_item) {
        $course_item = api_get_course_info($temp_course_item['code']);
        $course_list[] = [
            'code' => $course_item['code'],
            'title' => $course_item['title'],
        ];
    }
} else {
    $current_course['code'] = $_course['id'];
    $course_list = [$current_course];
}

$new_course_select = [];
foreach ($course_list as $data) {
    $new_course_select[$data['code']] = $data['title'];
}

$form = new FormValidator('search_simple', 'POST', '', '', null, false);
$form->addElement(
    'select',
    'course_code',
    get_lang('Course'),
    $new_course_select
);
if ($global) {
    $form->addElement('hidden', 'view', 'admin');
} else {
    //Get exam lists
    $course_id = api_get_course_int_id();
    $t_quiz = Database::get_course_table(TABLE_QUIZ_TEST);
    $sqlExercices = "SELECT quiz.title,id FROM ".$t_quiz." AS quiz
                     WHERE c_id = $course_id AND active='1'
                     ORDER BY quiz.title ASC";
    $resultExercices = Database::query($sqlExercices);
    $exercise_list[0] = get_lang('All');
    while ($a_exercices = Database::fetch_array($resultExercices)) {
        $exercise_list[$a_exercices['id']] = $a_exercices['title'];
    }
    $form->addElement('select', 'exercise_id', get_lang('Test'), $exercise_list);
}

//$form->addElement('submit','submit',get_lang('Filter'));
$form->addButtonFilter(get_lang('Filter'));

if (!empty($_REQUEST['course_code'])) {
    $selected_course = $_REQUEST['course_code'];
}
if (!empty($selected_course)) {
    $selected_course = api_get_course_info($selected_course);
    $course_list = [$selected_course];
}

if (!$export_to_csv) {
    Display :: display_header(get_lang('Reporting'));
    echo '<div class="actions" style ="font-size:10pt;">';
    if ($global) {
        echo '<div style="float:right"> <a href="'.api_get_self().'?export=1&score='.$filter_score.'&exercise_id='.$exercise_id.'">
                '.Display::return_icon('csv.gif').'
                &nbsp;'.get_lang('CSV export').'</a>'.
                '<a href="javascript: void(0);" onclick="javascript: window.print()">
                '.Display::return_icon('printmgr.gif').'
                &nbsp;'.get_lang('Print').'</a>
                    </div>';

        $menu_items[] = '<a href="'.api_get_path(WEB_CODE_PATH).'mySpace/?view=teacher">'.get_lang('Trainer View').'</a>';
        if (api_is_platform_admin()) {
            $menu_items[] = '<a href="'.api_get_path(WEB_CODE_PATH).'mySpace/?view=admin">'.get_lang('Admin view').'</a>';
        } else {
            $menu_items[] = '<a href="'.api_get_path(WEB_CODE_PATH).'mySpace/?view=coach">'.get_lang('Admin view').'</a>';
        }
        $menu_items[] = get_lang('Exam tracking');
        $nb_menu_items = count($menu_items);
        if ($nb_menu_items > 1) {
            foreach ($menu_items as $key => $item) {
                echo $item;
                if ($key != $nb_menu_items - 1) {
                    echo ' | ';
                }
            }
            echo '<br />';
        }
    } else {
        echo '<a href="courseLog.php?'.api_get_cidreq().'&studentlist=true">'.get_lang('Report on learners').'</a>&nbsp;|
             <a href="courseLog.php?'.api_get_cidreq().'&studentlist=false">'.get_lang('Course report').'</a>&nbsp;|&nbsp';
        echo '<a href="courseLog.php?'.api_get_cidreq().'&studentlist=resources">'.get_lang('Report on resource').'</a>';
        echo ' | '.get_lang('Exam tracking').'';
        echo '<a href="'.api_get_self().'?export=1&score='.$filter_score.'&exercise_id='.$exercise_id.'">
            '.Display::return_icon('excel.gif').'
            &nbsp;'.get_lang('Excel export').'</a><br /><br />';
    }
    echo '</div>';
    echo '<br /><br />';
    $form->display();
}
$main_result = [];
$session_id = 0;
$user_list = [];
// Getting course list
foreach ($course_list as $current_course) {
    $course_info = api_get_course_info($current_course['code']);
    $_course = $course_info;

    // Getting LP list
    $list = new LearnpathList('', $course_info, $session_id);
    $lp_list = $list->get_flat_list();

    // Looping LPs
    $lps = [];
    foreach ($lp_list as $lp_id => $lp) {
        $exercise_list = Event::get_all_exercises_from_lp($lp_id, $course_info['real_id']);
        $attempt_result = [];
        // Looping Chamilo Exercises in LP
        foreach ($exercise_list as $exercise) {
            $exercise_stats = Event::get_all_exercise_event_from_lp(
                $exercise['path'],
                $course_info['real_id'],
                $session_id
            );
            // Looping Exercise Attempts
            foreach ($exercise_stats as $stats) {
                $attempt_result[$exercise['id']]['users'][$stats['exe_user_id']][$stats['exe_id']] = $stats;
                $user_list[$stats['exe_user_id']] = $stats['exe_user_id'];
            }
            $exercise_list_name[$exercise['id']] = $exercise['title'];
        }
        $lps[$lp_id] = ['lp_name' => $lp['lp_name'], 'exercises' => $attempt_result];
        $lp_list_name[$lp_id] = $lp['lp_name'];
    }
    $main_result[$current_course['code']] = $lps;
}

if (!empty($user_list)) {
    foreach ($user_list as $user_id) {
        $user_data = api_get_user_info($user_id);
        $user_list_name[$user_id] = api_get_person_name(
            $user_data['firstname'],
            $user_data['lastname']
        );
    }
}
$export_array = [];
if (!empty($main_result)) {
    $html_result .= '<table  class="data_table">';
    $html_result .= '<tr><th>'.get_lang('Course').'</th>';
    $html_result .= '<th>'.get_lang('Learning paths').'</th>';
    $html_result .= '<th>'.get_lang('Test').'</th>';
    $html_result .= '<th>'.get_lang('User').'</th>';
    $html_result .= '<th>'.get_lang('Attempt').'</th>';
    $html_result .= '<th>'.get_lang('Date').'</th>';
    $html_result .= '<th>'.get_lang('Results and feedback and feedback').'</th>';
    $html_result .= '</tr>';

    foreach ($main_result as $course_code => $lps) {
        if (empty($lps)) {
            continue;
        }

        foreach ($lps as $lp_id => $lp_data) {
            $exercises = $lp_data['exercises'];

            foreach ($exercises as $exercise_id => $exercise_data) {
                $users = $exercise_data['users'];
                foreach ($users as $user_id => $attempts) {
                    $attempt = 1;
                    foreach ($attempts as $exe_id => $attempt_data) {
                        $html_result .= '<tr colspan="">';
                        $html_result .= Display::tag('td', $course_code);
                        $html_result .= Display::tag('td', $lp_list_name[$lp_id]);
                        $html_result .= Display::tag('td', $exercise_list_name[$exercise_id]);
                        $html_result .= Display::tag('td', $user_list_name[$user_id]);
                        $result = $attempt_data['score'].' / '.$attempt_data['max_score'];
                        $html_result .= Display::tag('td', $attempt);
                        $html_result .= Display::tag('td', api_get_local_time($attempt_data['exe_date']));
                        $html_result .= Display::tag('td', $result);

                        $html_result .= '</tr>';
                        $export_array[] = [
                            $course_code,
                            $lp_list_name[$lp_id],
                            $exercise_list_name[$exercise_id],
                            $user_list_name[$user_id],
                            $attempt,
                            api_get_local_time($attempt_data['exe_date']),
                            $result,
                        ];
                        $attempt++;
                    }
                }
            }
        }
    }
    $html_result .= '</table>';
}

if (!$export_to_csv) {
    echo $html_result;
}
$filename = 'learning_path_results-'.date('Y-m-d-h:i:s').'.xls';
if ($export_to_csv) {
    export_complete_report_csv($filename, $export_array);
    exit;
}

function export_complete_report_csv($filename, $array)
{
    $header[] = [
        get_lang('Course'),
        get_lang('Learning paths'),
        get_lang('Test'),
        get_lang('User'),
        get_lang('Attempt'),
        get_lang('Date'),
        get_lang('Results and feedback and feedback'),
    ];
    if (!empty($array)) {
        $array = array_merge($header, $array);
        Export :: arrayToCsv($array, $filename);
    }
    exit;
}

Display :: display_footer();
