<?php

/* For licensing terms, see /license.txt */

use Chamilo\CoreBundle\Entity\CourseCategory;
use Chamilo\CoreBundle\Entity\Repository\CourseCategoryRepository;
use Chamilo\UserBundle\Entity\User;

$cidReset = true;

require_once __DIR__.'/../inc/global.inc.php';
$this_section = SECTION_PLATFORM_ADMIN;

api_protect_admin_script();

$course_table = Database::get_main_table(TABLE_MAIN_COURSE);
$em = Database::getManager();
/** @var CourseCategoryRepository $courseCategoriesRepo */
$courseCategoriesRepo = $em->getRepository('ChamiloCoreBundle:CourseCategory');
// Get all possible teachers.
$urlId = api_get_current_access_url_id();

$courseId = isset($_GET['id']) ? $_GET['id'] : null;

if (empty($courseId)) {
    api_not_allowed(true);
}

$courseInfo = api_get_course_info_by_id($courseId);
$courseCode = $courseInfo['code'];

if (empty($courseInfo)) {
    api_not_allowed(true);
}

$tool_name = get_lang('ModifyCourseInfo');
$interbreadcrumb[] = ['url' => 'index.php', 'name' => get_lang('PlatformAdmin')];
$interbreadcrumb[] = ['url' => 'course_list.php', 'name' => get_lang('CourseList')];

// Get all course categories
$table_user = Database::get_main_table(TABLE_MAIN_USER);
$course_code = $courseInfo['code'];
$courseId = $courseInfo['real_id'];

// Get course teachers
$table_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
$order_clause = api_sort_by_first_name() ? ' ORDER BY firstname, lastname' : ' ORDER BY lastname, firstname';
$sql = "SELECT user.id as user_id,lastname,firstname
        FROM
            $table_user as user,
            $table_course_user as course_user
        WHERE
            course_user.status='1' AND
            course_user.user_id=user.id AND
            course_user.c_id ='".$courseId."'".
            $order_clause;
$res = Database::query($sql);
$course_teachers = [];
while ($obj = Database::fetch_object($res)) {
    $course_teachers[] = $obj->user_id;
}

// Get all possible teachers without the course teachers
if (api_is_multiple_url_enabled()) {
    $access_url_rel_user_table = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER);
    $sql = "SELECT u.id as user_id,lastname,firstname
            FROM $table_user as u
            INNER JOIN $access_url_rel_user_table url_rel_user
            ON (u.id=url_rel_user.user_id)
            WHERE
                url_rel_user.access_url_id = $urlId AND
                status = 1".$order_clause;
} else {
    $sql = "SELECT id as user_id, lastname, firstname
            FROM $table_user WHERE status='1'".$order_clause;
}
$courseInfo['tutor_name'] = null;

$res = Database::query($sql);
$teachers = [];
$allTeachers = [];
$platform_teachers[0] = '-- '.get_lang('NoManager').' --';
while ($obj = Database::fetch_object($res)) {
    $allTeachers[$obj->user_id] = api_get_person_name($obj->firstname, $obj->lastname);
    if (!array_key_exists($obj->user_id, $course_teachers)) {
        $teachers[$obj->user_id] = api_get_person_name($obj->firstname, $obj->lastname);
    }

    if (isset($course_teachers[$obj->user_id]) &&
        $courseInfo['tutor_name'] == $course_teachers[$obj->user_id]
    ) {
        $courseInfo['tutor_name'] = $obj->user_id;
    }
    // We add in the array platform teachers
    $platform_teachers[$obj->user_id] = api_get_person_name($obj->firstname, $obj->lastname);
}

// Case where there is no teacher in the course
if (count($course_teachers) == 0) {
    $sql = 'SELECT tutor_name FROM '.$course_table.' WHERE code="'.$course_code.'"';
    $res = Database::query($sql);
    $tutor_name = Database::result($res, 0, 0);
    $courseInfo['tutor_name'] = array_search($tutor_name, $platform_teachers);
}

// Build the form
$form = new FormValidator(
    'update_course',
    'post',
    api_get_self().'?id='.$courseId
);
$form->addHeader(get_lang('Course').'  #'.$courseInfo['real_id'].' '.$course_code);
$form->addElement('hidden', 'code', $course_code);

//title
$form->addText('title', get_lang('Title'), true);
$form->applyFilter('title', 'html_filter');
$form->applyFilter('title', 'trim');

// Code
$element = $form->addElement(
    'text',
    'real_code',
    [get_lang('CourseCode'), get_lang('ThisValueCantBeChanged')]
);
$element->freeze();

// Visual code
$form->addText(
    'visual_code',
    [
        get_lang('VisualCode'),
        get_lang('OnlyLettersAndNumbers'),
        get_lang('ThisValueIsUsedInTheCourseURL'),
    ],
    true,
    [
        'maxlength' => CourseManager::MAX_COURSE_LENGTH_CODE,
        'pattern' => '[a-zA-Z0-9]+',
        'title' => get_lang('OnlyLettersAndNumbers'),
    ]
);

$form->applyFilter('visual_code', 'strtoupper');
$form->applyFilter('visual_code', 'html_filter');

$countCategories = $courseCategoriesRepo->countAllInAccessUrl(
    $urlId,
    api_get_configuration_value('allow_base_course_category')
);
if ($countCategories >= 100) {
    // Category code
    $url = api_get_path(WEB_AJAX_PATH).'course.ajax.php?a=search_category';

    $categorySelect = $form->addElement(
        'select_ajax',
        'category_code',
        get_lang('CourseFaculty'),
        null,
        ['url' => $url]
    );

    if (!empty($courseInfo['categoryCode'])) {
        $data = \CourseCategory::getCategory($courseInfo['categoryCode']);
        $categorySelect->addOption($data['name'], $data['code']);
    }
} else {
    $courseInfo['category_code'] = $courseInfo['categoryCode'];
    $categories = $courseCategoriesRepo->findAllInAccessUrl(
        $urlId,
        api_get_configuration_value('allow_base_course_category')
    );
    $categoriesOptions = [null => get_lang('None')];

    /** @var CourseCategory $category */
    foreach ($categories as $category) {
        $categoriesOptions[$category->getCode()] = (string) $category;
    }

    $form->addSelect(
        'category_code',
        get_lang('CourseFaculty'),
        $categoriesOptions
    );
}

$courseTeacherNames = [];
foreach ($course_teachers as $courseTeacherId) {
    /** @var User $courseTeacher */
    $courseTeacher = UserManager::getRepository()->find($courseTeacherId);
    $courseTeacherNames[$courseTeacher->getId()] = UserManager::formatUserFullName($courseTeacher, true);
}

$form->addSelectAjax(
    'course_teachers',
    get_lang('CourseTeachers'),
    $courseTeacherNames,
    ['url' => api_get_path(WEB_AJAX_PATH).'user_manager.ajax.php?a=teacher_to_basis_course', 'multiple' => 'multiple']
);
$courseInfo['course_teachers'] = $course_teachers;
if (array_key_exists('add_teachers_to_sessions_courses', $courseInfo)) {
    $form->addElement(
        'checkbox',
        'add_teachers_to_sessions_courses',
        null,
        get_lang('TeachersWillBeAddedAsCoachInAllCourseSessions')
    );
}

$allowEditSessionCoaches = api_get_configuration_value('disabled_edit_session_coaches_course_editing_course') === false;
$coursesInSession = SessionManager::get_session_by_course($courseInfo['real_id']);
if (!empty($coursesInSession) && $allowEditSessionCoaches) {
    foreach ($coursesInSession as $session) {
        $sessionId = $session['id'];
        $coaches = SessionManager::getCoachesByCourseSession(
            $sessionId,
            $courseInfo['real_id']
        );
        $teachers = $allTeachers;

        $sessionTeachers = [];
        foreach ($coaches as $coachId) {
            $sessionTeachers[] = $coachId;

            if (isset($teachers[$coachId])) {
                unset($teachers[$coachId]);
            }
        }

        $groupName = 'session_coaches_'.$sessionId;
        $sessionUrl = api_get_path(WEB_CODE_PATH).'session/resume_session.php?id_session='.$sessionId;
        $form->addElement(
            'advmultiselect',
            $groupName,
            Display::url(
                $session['name'],
                $sessionUrl,
                ['target' => '_blank']
            ).' - '.get_lang('Coaches'),
            $allTeachers
        );
        $courseInfo[$groupName] = $sessionTeachers;
    }
}

$form->addText('department_name', get_lang('CourseDepartment'), false, ['size' => '60']);
$form->applyFilter('department_name', 'html_filter');
$form->applyFilter('department_name', 'trim');

$form->addText('department_url', get_lang('CourseDepartmentURL'), false, ['size' => '60']);
$form->applyFilter('department_url', 'html_filter');
$form->applyFilter('department_url', 'trim');

$form->addSelectLanguage('course_language', get_lang('CourseLanguage'));

$group = [];
$group[] = $form->createElement(
    'radio',
    'visibility',
    get_lang('CourseAccess'),
    get_lang('OpenToTheWorld'),
    COURSE_VISIBILITY_OPEN_WORLD
);
$group[] = $form->createElement(
    'radio',
    'visibility',
    null,
    get_lang('OpenToThePlatform'),
    COURSE_VISIBILITY_OPEN_PLATFORM
);
$group[] = $form->createElement('radio', 'visibility', null, get_lang('Private'), COURSE_VISIBILITY_REGISTERED);
$group[] = $form->createElement(
    'radio',
    'visibility',
    null,
    get_lang('CourseVisibilityClosed'),
    COURSE_VISIBILITY_CLOSED
);
$group[] = $form->createElement(
    'radio',
    'visibility',
    null,
    get_lang('CourseVisibilityHidden'),
    COURSE_VISIBILITY_HIDDEN
);
$form->addGroup($group, '', get_lang('CourseAccess'));

$group = [];
$group[] = $form->createElement('radio', 'subscribe', get_lang('Subscription'), get_lang('Allowed'), 1);
$group[] = $form->createElement('radio', 'subscribe', null, get_lang('Denied'), 0);
$form->addGroup($group, '', get_lang('Subscription'));

$group = [];
$group[] = $form->createElement(
    'radio',
    'unsubscribe',
    get_lang('Unsubscription'),
    get_lang('AllowedToUnsubscribe'),
    1
);
$group[] = $form->createElement('radio', 'unsubscribe', null, get_lang('NotAllowedToUnsubscribe'), 0);
$form->addGroup($group, '', get_lang('Unsubscription'));

$form->addElement('text', 'disk_quota', [get_lang('CourseQuota'), null, get_lang('MB')]);
$form->addRule('disk_quota', get_lang('ThisFieldIsRequired'), 'required');
$form->addRule('disk_quota', get_lang('ThisFieldShouldBeNumeric'), 'numeric');

// Extra fields
$extra_field = new ExtraField('course');
$extra = $extra_field->addElements(
    $form,
    $courseId,
    [],
    false,
    false,
    [],
    [],
    [],
    false,
    true
);

if (api_get_configuration_value('allow_course_multiple_languages')) {
    // Course Multiple language.
    $languages = api_get_languages();
    $cbMultiLanguage = $form->getElementByName('extra_multiple_language');
    if (isset($cbMultiLanguage)) {
        foreach ($languages['folder'] as $langFolder) {
            $cbMultiLanguage->addOption(get_lang($langFolder), $langFolder);
        }
    }
}

if (api_get_configuration_value('multiple_access_url_show_shared_course_marker')) {
    $urls = UrlManager::get_access_url_from_course($courseId);
    $urlToString = '';
    foreach ($urls as $url) {
        $urlToString .= $url['url'].'<br />';
    }
    $form->addLabel('URLs', $urlToString);
}
$allowSkillRelItem = api_get_configuration_value('allow_skill_rel_items');
if ($allowSkillRelItem) {
    Skill::setSkillsToCourse($form, $courseId);
    $htmlContentExtraClass[] = 'feature-item-user-skill-on';
}

$htmlHeadXtra[] = '
<script>
$(function() {
    '.$extra['jquery_ready_content'].'
});
</script>';

$form->addButtonUpdate(get_lang('ModifyCourseInfo'));

// Set some default values
$courseInfo['disk_quota'] = round(DocumentManager::get_course_quota($courseInfo['code']) / 1024 / 1024, 1);
$courseInfo['real_code'] = $courseInfo['code'];
$courseInfo['add_teachers_to_sessions_courses'] = $courseInfo['add_teachers_to_sessions_courses'] ?? 0;
$form->setDefaults($courseInfo);

// Validate form
if ($form->validate()) {
    $course = $form->getSubmitValues();
    $visibility = $course['visibility'];

    /*if ($allowSkillRelItem) {
        $result = Skill::saveSkillsToCourseFromForm($form);
    }*/

    global $_configuration;

    if (isset($_configuration[$urlId]) &&
        isset($_configuration[$urlId]['hosting_limit_active_courses']) &&
        $_configuration[$urlId]['hosting_limit_active_courses'] > 0
    ) {
        // Check if
        if ($courseInfo['visibility'] == COURSE_VISIBILITY_HIDDEN &&
            $visibility != $courseInfo['visibility']
        ) {
            $num = CourseManager::countActiveCourses($urlId);
            if ($num >= $_configuration[$urlId]['hosting_limit_active_courses']) {
                api_warn_hosting_contact('hosting_limit_active_courses');

                Display::addFlash(
                    Display::return_message(get_lang('PortalActiveCoursesLimitReached'))
                );

                header('Location: course_list.php');
                exit;
            }
        }
    }

    $visual_code = $course['visual_code'];
    $visual_code = CourseManager::generate_course_code($visual_code);

    // Check if the visual code is already used by *another* course
    $visual_code_is_used = false;

    $warn = get_lang('TheFollowingCoursesAlreadyUseThisVisualCode');
    if (!empty($visual_code)) {
        $list = CourseManager::get_courses_info_from_visual_code($visual_code);
        foreach ($list as $course_temp) {
            if ($course_temp['code'] != $course_code) {
                $visual_code_is_used = true;
                $warn .= ' '.$course_temp['title'].' ('.$course_temp['code'].'),';
            }
        }
        $warn = substr($warn, 0, -1);
    }

    $teachers = isset($course['course_teachers']) ? $course['course_teachers'] : '';
    $title = $course['title'];
    $category_code = isset($course['category_code']) ? $course['category_code'] : '';
    $department_name = $course['department_name'];
    $department_url = $course['department_url'];
    $course_language = $course['course_language'];
    $course['disk_quota'] = $course['disk_quota'] * 1024 * 1024;
    $disk_quota = $course['disk_quota'];
    $subscribe = $course['subscribe'];
    $unsubscribe = $course['unsubscribe'];
    $course['course_code'] = $course_code;

    if (!stristr($department_url, 'http://')) {
        $department_url = 'http://'.$department_url;
    }

    Database::query($sql);

    $courseInfoBeforeUpdate = api_get_course_info_by_id($courseId);
    $title = str_replace('&amp;', '&', $title);
    $params = [
        'title' => $title,
        'course_language' => $course_language,
        'category_code' => $category_code,
        'department_name' => $department_name,
        'department_url' => $department_url,
        'visibility' => $visibility,
        'subscribe' => $subscribe,
        'unsubscribe' => $unsubscribe,
        'disk_quota' => $disk_quota,
        'visual_code' => $visual_code,
    ];
    Database::update($course_table, $params, ['id = ?' => $courseId]);
    CourseManager::saveSettingChanges($courseInfoBeforeUpdate, $params);

    // update the extra fields
    $courseFieldValue = new ExtraFieldValue('course');
    $courseFieldValue->saveFieldValues($course);
    $addTeacherToSessionCourses = isset($course['add_teachers_to_sessions_courses']) && !empty($course['add_teachers_to_sessions_courses']) ? 1 : 0;

    // Updating teachers
    if ($addTeacherToSessionCourses) {
        foreach ($coursesInSession as $session) {
            $sessionId = $session['id'];
            // Updating session coaches
            $sessionCoaches = isset($course['session_coaches_'.$sessionId]) ? $course['session_coaches_'.$sessionId] : [];

            if (!empty($sessionCoaches)) {
                foreach ($sessionCoaches as $teacherInfo) {
                    $coachesToSubscribe = isset($teacherInfo['coaches_by_session']) ? $teacherInfo['coaches_by_session'] : [];
                    SessionManager::updateCoaches(
                        $sessionId,
                        $courseId,
                        $coachesToSubscribe,
                        true
                    );
                }
            }
        }

        CourseManager::updateTeachers(
            $courseInfo,
            $teachers,
            true,
            true,
            false
        );
    } else {
        // Normal behaviour
        CourseManager::updateTeachers($courseInfo, $teachers, true, false);

        foreach ($coursesInSession as $session) {
            $sessionId = $session['id'];
            // Updating session coaches
            $sessionCoaches = isset($course['session_coaches_'.$sessionId]) ? $course['session_coaches_'.$sessionId] : [];

            if (!empty($sessionCoaches)) {
                SessionManager::updateCoaches(
                    $sessionId,
                    $courseId,
                    $sessionCoaches,
                    true
                );
            }
        }
    }

    if (array_key_exists('add_teachers_to_sessions_courses', $courseInfo)) {
        $sql = "UPDATE $course_table SET
                add_teachers_to_sessions_courses = '$addTeacherToSessionCourses'
                WHERE id = ".$courseInfo['real_id'];
        Database::query($sql);
    }

    $courseInfo = api_get_course_info($courseInfo['code']);
    $message = Display::url($courseInfo['title'], $courseInfo['course_public_url']);
    Display::addFlash(Display::return_message(get_lang('ItemUpdated').': '.$message, 'info', false));
    if ($visual_code_is_used) {
        Display::addFlash(Display::return_message($warn));
    }
    header('Location: course_list.php');
    exit;
}

Display::display_header($tool_name);

echo '<div class="actions">';
echo Display::url(
    Display::return_icon('back.png', get_lang('Back')),
    api_get_path(WEB_CODE_PATH).'admin/course_list.php'
);
echo Display::url(
    Display::return_icon('course_home.png', get_lang('CourseHome')),
    $courseInfo['course_public_url'],
    ['target' => '_blank']
);

echo Display::url(
    Display::return_icon('info2.png', get_lang('Info')),
    api_get_path(WEB_CODE_PATH)."admin/course_information.php?code=$courseCode"
);

echo '</div>';

echo "<script>
function moveItem(origin , destination) {
    for (var i = 0 ; i<origin.options.length ; i++) {
        if (origin.options[i].selected) {
            destination.options[destination.length] = new Option(origin.options[i].text,origin.options[i].value);
            origin.options[i]=null;
            i = i-1;
        }
    }
    destination.selectedIndex = -1;
    sortOptions(destination.options);
}

function sortOptions(options) {

    newOptions = new Array();
    for (i = 0 ; i<options.length ; i++) {
        newOptions[i] = options[i];
    }
    newOptions = newOptions.sort(mysort);
    options.length = 0;
    for (i = 0 ; i < newOptions.length ; i++) {
        options[i] = newOptions[i];
    }
}

function mysort(a, b) {
    if (a.text.toLowerCase() > b.text.toLowerCase()) {
        return 1;
    }
    if (a.text.toLowerCase() < b.text.toLowerCase()) {
        return -1;
    }
    return 0;
}

function valide() {
    // Checking all multiple
    $('select').filter(function() {
        if ($(this).attr('multiple')) {
            $(this).find('option').each(function() {
                $(this).attr('selected', true);
            });
        }
    });
}
</script>";

$form->display();

Display::display_footer();