PHP CourseManager::is_user_subscribed_in_course方法代码示例

if ($isSpecialCourse) {
    if (isset($_GET['autoreg'])) {
        $autoRegistration = Security::remove_XSS($_GET['autoreg']);
        if ($autoRegistration == 1) {
            if (CourseManager::subscribe_user($user_id, $course_code, STUDENT)) {
                Session::write('is_allowed_in_course', true);
            }
        }
    }
}
if (isset($_GET['action']) && $_GET['action'] == 'subscribe') {
    if (Security::check_token('get')) {
        Security::clear_token();
        $auth = new Auth();
        $msg = $auth->subscribe_user($course_code);
        if (CourseManager::is_user_subscribed_in_course($user_id, $course_code)) {
            Session::write('is_allowed_in_course', true);
        }
        if (!empty($msg)) {
            $show_message .= Display::return_message(get_lang($msg['message']), 'info', false);
        }
    }
}
/*	Is the user allowed here? */
api_protect_course_script(true);
/*  STATISTICS */
if (!isset($coursesAlreadyVisited[$course_code])) {
    Event::accessCourse();
    $coursesAlreadyVisited[$course_code] = 1;
    Session::write('coursesAlreadyVisited', $coursesAlreadyVisited);
}

    $user_data['expiration_date']['Y'] = date('Y');
} else {
    $user_data['radio_expiration_date'] = 1;
    $user_data['expiration_date'] = array();
    $user_data['expiration_date']['d'] = substr($expiration_date, 8, 2);
    $user_data['expiration_date']['F'] = substr($expiration_date, 5, 2);
    $user_data['expiration_date']['Y'] = substr($expiration_date, 0, 4);
    $user_data['expiration_date']['H'] = substr($expiration_date, 11, 2);
    $user_data['expiration_date']['i'] = substr($expiration_date, 14, 2);
}
$form->setDefaults($user_data);
$error_drh = false;
// Validate form
if ($form->validate()) {
    $user = $form->getSubmitValues(1);
    $is_user_subscribed_in_course = CourseManager::is_user_subscribed_in_course($user['user_id']);
    if ($user['status'] == DRH && $is_user_subscribed_in_course) {
        $error_drh = true;
    } else {
        $userInfo = api_get_user_info($user_id);
        $picture_element = $form->getElement('picture');
        $picture = $picture_element->getValue();
        $picture_uri = $user_data['picture_uri'];
        if (isset($user['delete_picture']) && $user['delete_picture']) {
            $picture_uri = UserManager::delete_user_picture($user_id);
        } elseif (!empty($picture['name'])) {
            $picture_uri = UserManager::update_user_picture($user_id, $_FILES['picture']['name'], $_FILES['picture']['tmp_name']);
        }
        $lastname = $user['lastname'];
        $firstname = $user['firstname'];
        $password = $user['password'];

 // inactive students
 $last_connection_date = Tracking::get_last_connection_date($student_id, true, true);
 if ($last_connection_date !== false) {
     if (time() - 3600 * 24 * 7 > $last_connection_date) {
         $nb_inactive_students++;
     }
 } else {
     $nb_inactive_students++;
 }
 $total_time_spent += Tracking::get_time_spent_on_the_platform($student_id);
 $total_courses += Tracking::count_course_per_student($student_id);
 $avg_student_progress = 0;
 $avg_student_score = 0;
 $nb_courses_student = 0;
 foreach ($courses as $courseId) {
     if (CourseManager::is_user_subscribed_in_course($student_id, $courseId, true)) {
         $nb_courses_student++;
         $nb_posts += Tracking::count_student_messages($student_id, $courseId);
         $nb_assignments += Tracking::count_student_assignments($student_id, $courseId);
         $avg_student_progress += Tracking::get_avg_student_progress($student_id, $courseId);
         $myavg_temp = Tracking::get_avg_student_score($student_id, $courseId);
         if (is_numeric($myavg_temp)) {
             $avg_student_score += $myavg_temp;
         }
         if ($nb_posts !== null && $nb_assignments !== null && $avg_student_progress !== null && $avg_student_score !== null) {
             //if one of these scores is null, it means that we had a problem connecting to the right database, so don't count it in
             $nb_courses_student++;
         }
     }
 }
 // average progress of the student

 /**
  * Direct course link see #5299
  *
  * You can send to your students an URL like this
  * http://chamilodev.beeznest.com/main/auth/inscription.php?c=ABC&e=3
  * Where "c" is the course code and "e" is the exercise Id, after a successful
  * registration the user will be sent to the course or exercise
  *
  */
 public static function redirectToCourse($form_data)
 {
     $course_code_redirect = Session::read('course_redirect');
     $_user = api_get_user_info();
     $user_id = api_get_user_id();
     if (!empty($course_code_redirect)) {
         $course_info = api_get_course_info($course_code_redirect);
         if (!empty($course_info)) {
             if (in_array($course_info['visibility'], array(COURSE_VISIBILITY_OPEN_PLATFORM, COURSE_VISIBILITY_OPEN_WORLD))) {
                 if (CourseManager::is_user_subscribed_in_course($user_id, $course_info['code'])) {
                     $form_data['action'] = $course_info['course_public_url'];
                     $form_data['message'] = sprintf(get_lang('YouHaveBeenRegisteredToCourseX'), $course_info['title']);
                     $form_data['button'] = Display::button('next', get_lang('GoToCourse', null, $_user['language']), array('class' => 'btn btn-primary btn-large'));
                     $exercise_redirect = intval(Session::read('exercise_redirect'));
                     // Specify the course id as the current context does not
                     // hold a global $_course array
                     $objExercise = new Exercise($course_info['real_id']);
                     $result = $objExercise->read($exercise_redirect);
                     if (!empty($exercise_redirect) && !empty($result)) {
                         $form_data['action'] = api_get_path(WEB_CODE_PATH) . 'exercice/overview.php?exerciseId=' . $exercise_redirect . '&cidReq=' . $course_info['code'];
                         $form_data['message'] .= '<br />' . get_lang('YouCanAccessTheExercise');
                         $form_data['button'] = Display::button('next', get_lang('Go', null, $_user['language']), array('class' => 'btn btn-primary btn-large'));
                     }
                     if (!empty($form_data['action'])) {
                         header('Location: ' . $form_data['action']);
                         exit;
                     }
                 }
             }
         }
     }
     return $form_data;
 }

        CourseManager::save_user_legal($user_id, $course_code, $session_id);
        if (api_check_user_access_to_legal($course_info['visibility'])) {
            Session::write($variable, true);
        }
        if ($pluginLegal) {
            header('Location:' . $url);
            exit;
        }
    }
}
$user_pass_open_course = false;
if (api_check_user_access_to_legal($course_info['visibility']) && Session::read($variable)) {
    $user_pass_open_course = true;
}
if (empty($session_id)) {
    if (CourseManager::is_user_subscribed_in_course($user_id, $course_code) || api_check_user_access_to_legal($course_info['visibility'])) {
        $user_accepted_legal = CourseManager::is_user_accepted_legal($user_id, $course_code);
        if ($user_accepted_legal || $user_pass_open_course) {
            //Redirect to course home
            header('Location: ' . $url);
            exit;
        }
    } else {
        api_not_allowed();
    }
} else {
    if (api_is_platform_admin()) {
        header('Location: ' . $url);
    }
    $userStatus = SessionManager::get_user_status_in_session($user_id, $course_code, $session_id);
    if (isset($userStatus) || api_check_user_access_to_legal($course_info['visibility'])) {

    /**
     * Helper functions definition
     */
    public static function get_logged_user_course_html($my_course, $count)
    {
        global $nosession, $nbDigestEntries, $orderKey, $digest, $thisCourseSysCode;
        if (!$nosession) {
            global $now, $date_start, $date_end;
        }
        //initialise
        $result = '';
        // Table definitions
        $main_user_table = Database :: get_main_table(TABLE_MAIN_USER);
        $tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);

        $course_code = $my_course['code'];
        $course_visual_code = $my_course['course_info']['official_code'];
        $course_title = $my_course['course_info']['title'];

        $course_info = Database :: get_course_info($course_code);

        $course_id = $course_info['real_id'];

        $course_access_settings = CourseManager :: get_access_settings($course_code);

        $course_visibility = $course_access_settings['visibility'];

        $user_in_course_status = CourseManager :: get_user_in_course_status(api_get_user_id(), $course_code);
        //function logic - act on the data
        $is_virtual_course = CourseManager :: is_virtual_course_from_system_code($course_code);
        if ($is_virtual_course) {
            // If the current user is also subscribed in the real course to which this
            // virtual course is linked, we don't need to display the virtual course entry in
            // the course list - it is combined with the real course entry.
            $target_course_code = CourseManager :: get_target_of_linked_course($course_code);
            $is_subscribed_in_target_course = CourseManager :: is_user_subscribed_in_course(api_get_user_id(), $target_course_code);
            if ($is_subscribed_in_target_course) {
                return; //do not display this course entry
            }
        }

        $s_htlm_status_icon = Display::return_icon('course.gif', get_lang('Course'));

        //display course entry
        $result .= '<div id="div_'.$count.'">';
        //$result .= '<h3><img src="../img/nolines_plus.gif" id="btn_'.$count.'" onclick="toogle_course(this,\''.$course_id.'\' )">';
        $result .= $s_htlm_status_icon;

        //show a hyperlink to the course, unless the course is closed and user is not course admin
        if ($course_visibility != COURSE_VISIBILITY_HIDDEN && ($course_visibility != COURSE_VISIBILITY_CLOSED || $user_in_course_status == COURSEMANAGER)) {
           //$result .= '<a href="javascript:void(0)" id="ln_'.$count.'"  onclick=toogle_course(this,\''.$course_id.'\');>&nbsp;'.$course_title.'</a>';
           $result .= $course_title;
        } else {
            $result .= $course_title." "." ".get_lang('CourseClosed')."";
        }
        $result .= '</h3>';
        //$current_course_settings = CourseManager :: get_access_settings($my_course['k']);
        // display the what's new icons
        /*if ($nbDigestEntries > 0) {
            reset($digest);
            $result .= '<ul>';
            while (list ($key2) = each($digest[$thisCourseSysCode])) {
                $result .= '<li>';
                if ($orderKey[1] == 'keyTools') {
                    $result .= "<a href=\"$toolsList[$key2] [\"path\"] $thisCourseSysCode \">";
                    $result .= "$toolsList[$key2][\"name\"]</a>";
                } else {
                    $result .= api_convert_and_format_date($key2, DATE_FORMAT_LONG, date_default_timezone_get());
                }
                $result .= '</li>';
                $result .= '<ul>';
                reset($digest[$thisCourseSysCode][$key2]);
                while (list ($key3, $dataFromCourse) = each($digest[$thisCourseSysCode][$key2])) {
                    $result .= '<li>';
                    if ($orderKey[2] == 'keyTools') {
                        $result .= "<a href=\"$toolsList[$key3] [\"path\"] $thisCourseSysCode \">";
                        $result .= "$toolsList[$key3][\"name\"]</a>";
                    } else {
                        $result .= api_convert_and_format_date($key3, DATE_FORMAT_LONG, date_default_timezone_get());
                    }
                    $result .= '<ul compact="compact">';
                    reset($digest[$thisCourseSysCode][$key2][$key3]);
                    while (list ($key4, $dataFromCourse) = each($digest[$thisCourseSysCode][$key2][$key3])) {
                        $result .= '<li>';
                        $result .= htmlspecialchars(substr(strip_tags($dataFromCourse), 0, CONFVAL_NB_CHAR_FROM_CONTENT));
                        $result .= '</li>';
                    }
                    $result .= '</ul>';
                    $result .= '</li>';
                }
                $result .= '</ul>';
                $result .= '</li>';
            }
            $result .= '</ul>';
        }*/
        $result .= '</li>';
        $result .= '</div>';

        if (!$nosession) {
            $session = '';
//.........这里部分代码省略.........

 /*
  * Direct course link see #5299
  *
  * You can send to your students an URL like this
  * http://chamilodev.beeznest.com/main/auth/inscription.php?c=ABC&e=3
  * Where "c" is the course code and "e" is the exercise Id, after a successful
  * registration the user will be sent to the course or exercise
  *
  */
 $course_code_redirect = Session::read('course_redirect');
 if (!empty($course_code_redirect)) {
     $course_info = api_get_course_info($course_code_redirect);
     if (!empty($course_info)) {
         if (in_array($course_info['visibility'], array(COURSE_VISIBILITY_OPEN_PLATFORM, COURSE_VISIBILITY_OPEN_WORLD))) {
             $user_id = api_get_user_id();
             if (CourseManager::is_user_subscribed_in_course($user_id, $course_info['code'])) {
                 $form_data['action'] = $course_info['course_public_url'];
                 $form_data['message'] = sprintf(get_lang('YouHaveBeenRegisteredToCourseX'), $course_info['title']);
                 $form_data['button'] = Display::button('next', get_lang('GoToCourse', null, $_user['language']), array('class' => 'btn btn-primary btn-large'));
                 $exercise_redirect = intval(Session::read('exercise_redirect'));
                 // Specifiy course ID as the current context does not
                 // hold a global $_course array
                 $objExercise = new Exercise($course_info['real_id']);
                 $result = $objExercise->read($exercise_redirect);
                 if (!empty($exercise_redirect) && !empty($result)) {
                     $form_data['action'] = api_get_path(WEB_CODE_PATH) . 'exercice/overview.php?exerciseId=' . $exercise_redirect . '&cidReq=' . $course_info['code'];
                     $form_data['message'] .= '<br />' . get_lang('YouCanAccessTheExercise');
                     $form_data['button'] = Display::button('next', get_lang('Go', null, $_user['language']), array('class' => 'btn btn-primary btn-large'));
                 }
                 if (!empty($form_data['action'])) {
                     header('Location: ' . $form_data['action']);

                            $user_ids[] = $user['user_id'];
                        }
                        CourseManager::unsubscribe_user($user_ids, $course_code, $session_id);
                    }
                }
                foreach ($clean_users as $userId) {
                    $userInfo = api_get_user_info($userId);
                    CourseManager::subscribe_user($userId, $course_code, STUDENT, $session_id);
                    if (empty($session_id)) {
                        //just to make sure
                        if (CourseManager::is_user_subscribed_in_course($userId, $course_code)) {
                            $user_to_show[] = $userInfo['complete_name'];
                        }
                    } else {
                        //just to make sure
                        if (CourseManager::is_user_subscribed_in_course($userId, $course_code, true, $session_id)) {
                            $user_to_show[] = $userInfo['complete_name'];
                        }
                    }
                }
            } else {
                $message = get_lang('CheckUsersWithId');
                $type = 'warning';
                foreach ($invalid_users as $invalid_user) {
                    $user_to_show[] = $invalid_user;
                }
            }
        }
    }
}
Display::display_header();

// IMPORTANT to avoid caching of documents
header('Expires: Wed, 01 Jan 1990 00:00:00 GMT');
header('Cache-Control: public');
header('Pragma: no-cache');
$course_id = intval($_REQUEST['course_id']);
$user_id = api_get_user_id();
$course_info = api_get_course_info_by_id($course_id);
$doc_url = $_REQUEST['file'];
$session_id = api_get_session_id();
if (empty($course_id)) {
    $course_id = api_get_course_int_id();
}
if (empty($course_id) || empty($doc_url)) {
    api_not_allowed();
}
$is_user_is_subscribed = CourseManager::is_user_subscribed_in_course($user_id, $course_id, true, $session_id);
if (!api_is_allowed_to_edit() && !$is_user_is_subscribed) {
    api_not_allowed();
}
//change the '&' that got rewritten to '///' by mod_rewrite back to '&'
$doc_url = str_replace('///', '&', $doc_url);
//still a space present? it must be a '+' (that got replaced by mod_rewrite)
$doc_url = str_replace(' ', '+', $doc_url);
$doc_url = str_replace('/..', '', $doc_url);
//echo $doc_url;
$full_file_name = api_get_path(SYS_COURSE_PATH) . $course_info['path'] . '/upload/calendar/' . $doc_url;
//if the rewrite rule asks for a directory, we redirect to the document explorer
if (is_dir($full_file_name)) {
    //remove last slash if present
    //$doc_url = ($doc_url{strlen($doc_url)-1}=='/')?substr($doc_url,0,strlen($doc_url)-1):$doc_url;
    //mod_rewrite can change /some/path/ to /some/path// in some cases, so clean them all off (René)

/**
* @return boolean indicating if user with user_id=$user_id is a course member
* @todo check if this function is still necessary. There might be a library function for this.
*/
function isCourseMember($user_id)
{
    $_course = api_get_course_info();
    $course_code = $_course['code'];
    $is_course_member = CourseManager::is_user_subscribed_in_course($user_id, $course_code, true);
    return $is_course_member;
}

     $is_courseTutor = false;
     $is_courseCoach = false;
     $is_sessionAdmin = false;
 }
 // Checking the course access
 $is_allowed_in_course = false;
 if (isset($_course) && isset($_course['visibility'])) {
     switch ($_course['visibility']) {
         case COURSE_VISIBILITY_OPEN_WORLD:
             //3
             $is_allowed_in_course = true;
             break;
         case COURSE_VISIBILITY_OPEN_PLATFORM:
             //2
             $courseCode = $_course['code'];
             $isUserSubscribedInCourse = CourseManager::is_user_subscribed_in_course($user_id, $courseCode, $session_id);
             if (isset($user_id) && $isUserSubscribedInCourse === true && !api_is_anonymous($user_id)) {
                 $is_allowed_in_course = true;
             }
             break;
         case COURSE_VISIBILITY_REGISTERED:
             //1
             if ($is_platformAdmin || $is_courseMember) {
                 $is_allowed_in_course = true;
             }
             break;
         case COURSE_VISIBILITY_CLOSED:
             //0
             if ($is_platformAdmin || $is_courseAdmin) {
                 $is_allowed_in_course = true;
             }

/**
* @return boolean indicating if user with user_id=$user_id is a course member
* @todo check if this function is still necessary. There might be a library function for this.
*/
function isCourseMember($user_id)
{
    $courseId = api_get_course_int_id();
    return CourseManager::is_user_subscribed_in_course($user_id, $courseId, true);
}

// including some libraries that are also used in the documents tool
require_once api_get_path(SYS_CODE_PATH) . 'document/document.inc.php';
// we use a function build_document_icon_tag
require_once api_get_path(LIBRARY_PATH) . 'document.lib.php';
/*	Virtual course support */
$user_id = api_get_user_id();
$course_code = api_get_course_id();
$course_info = api_get_course_info($course_code);
$session_id = api_get_session_id();
$action = isset($_GET['action']) ? $_GET['action'] : null;
$view = isset($_GET['view']) ? Security::remove_XSS($_GET['view']) : null;
$postAction = isset($_POST['action']) ? $_POST['action'] : null;
if (empty($session_id)) {
    $is_course_member = CourseManager::is_user_subscribed_in_course($user_id, $course_info['real_id'], false);
} else {
    $is_course_member = CourseManager::is_user_subscribed_in_course($user_id, $course_info['real_id'], true, $session_id);
}
/*	Object Initialisation */
// we need this here because the javascript to re-upload the file needs an array
// off all the documents that have already been sent.
// @todo consider moving the javascripts in a function that displays the javascripts
// only when it is needed.
if ($action == 'add') {
    $dropbox_person = new Dropbox_Person($_user['user_id'], $is_courseAdmin, $is_courseTutor);
}
/*	Create javascript and htmlHeaders */
$javascript = "<script type=\"text/javascript\">\n\tfunction confirmsend ()\n\t{\n\t\tif (confirm(\"" . get_lang('MailingConfirmSend', '') . "\")){\n\t\t\treturn true;\n\t\t} else {\n\t\t\treturn false;\n\t\t}\n\t\treturn true;\n\t}\n\n\tfunction confirmation (name)\n\t{\n\t\tif (confirm(\"" . get_lang('ConfirmDelete', '') . " : \"+ name )){\n\t\t\treturn true;\n\t\t} else {\n\t\t\treturn false;\n\t\t}\n\t\treturn true;\n\t}\n\n\tfunction checkForm (frm)\n\t{\n\t\tif (frm.elements['recipients[]'].selectedIndex < 0){\n\t\t\talert(\"" . get_lang('NoUserSelected', '') . "\");\n\t\t\treturn false;\n\t\t} else if (frm.file.value == '') {\n\t\t\talert(\"" . get_lang('NoFileSpecified', '') . "\");\n\t\t\treturn false;\n\t\t} else {\n\t\t\treturn true;\n\t\t}\n\t}\n\t";
if (dropbox_cnf('allowOverwrite')) {
    //sentArray keeps list of all files still available in the sent files list
    //of the user.
    //This is used to show or hide the overwrite file-radio button of the upload form

function get_users($from, $limit, $column, $direction)
{
    $active = isset($_GET['active']) ? $_GET['active'] : 1;
    $keyword = isset($_GET['keyword']) ? Security::remove_XSS($_GET['keyword']) : null;
    $sleepingDays = isset($_GET['sleeping_days']) ? intval($_GET['sleeping_days']) : null;
    $lastConnectionDate = null;
    if (!empty($sleepingDays)) {
        $lastConnectionDate = api_get_utc_datetime(strtotime($sleepingDays . ' days ago'));
    }
    $is_western_name_order = api_is_western_name_order();
    $coach_id = api_get_user_id();
    $drhLoaded = false;
    if (api_is_drh()) {
        $column = 'u.user_id';
        if (api_drh_can_access_all_session_content()) {
            $students = SessionManager::getAllUsersFromCoursesFromAllSessionFromStatus('drh_all', api_get_user_id(), false, $from, $limit, $column, $direction, $keyword, $active, $lastConnectionDate, null, null, api_is_student_boss() ? null : STUDENT);
            $drhLoaded = true;
        }
    }
    if ($drhLoaded == false) {
        $students = UserManager::getUsersFollowedByUser(api_get_user_id(), api_is_student_boss() ? null : STUDENT, false, false, false, $from, $limit, $column, $direction, $active, $lastConnectionDate, api_is_student_boss() ? STUDENT_BOSS : COURSEMANAGER, $keyword);
    }
    $all_datas = array();
    foreach ($students as $student_data) {
        $student_id = $student_data['user_id'];
        if (isset($_GET['id_session'])) {
            $courses = Tracking::get_course_list_in_session_from_student($student_id, $_GET['id_session']);
        }
        $avg_time_spent = $avg_student_score = $avg_student_progress = $total_assignments = $total_messages = 0;
        $nb_courses_student = 0;
        if (!empty($courses)) {
            foreach ($courses as $course_code) {
                $courseInfo = api_get_course_info($course_code);
                $courseId = $courseInfo['real_id'];
                if (CourseManager::is_user_subscribed_in_course($student_id, $course_code, true)) {
                    $avg_time_spent += Tracking::get_time_spent_on_the_course($student_id, $courseId, $_GET['id_session']);
                    $my_average = Tracking::get_avg_student_score($student_id, $course_code);
                    if (is_numeric($my_average)) {
                        $avg_student_score += $my_average;
                    }
                    $avg_student_progress += Tracking::get_avg_student_progress($student_id, $course_code);
                    $total_assignments += Tracking::count_student_assignments($student_id, $course_code);
                    $total_messages += Tracking::count_student_messages($student_id, $course_code);
                    $nb_courses_student++;
                }
            }
        }
        if ($nb_courses_student > 0) {
            $avg_time_spent = $avg_time_spent / $nb_courses_student;
            $avg_student_score = $avg_student_score / $nb_courses_student;
            $avg_student_progress = $avg_student_progress / $nb_courses_student;
        } else {
            $avg_time_spent = null;
            $avg_student_score = null;
            $avg_student_progress = null;
        }
        $row = array();
        if ($is_western_name_order) {
            $row[] = $student_data['firstname'];
            $row[] = $student_data['lastname'];
        } else {
            $row[] = $student_data['lastname'];
            $row[] = $student_data['firstname'];
        }
        $string_date = Tracking::get_last_connection_date($student_id, true);
        $first_date = Tracking::get_first_connection_date($student_id);
        $row[] = $first_date;
        $row[] = $string_date;
        if (isset($_GET['id_coach']) && intval($_GET['id_coach']) != 0) {
            $detailsLink = '<a href="myStudents.php?student=' . $student_id . '&id_coach=' . $coach_id . '&id_session=' . $_GET['id_session'] . '">
				          <img src="' . api_get_path(WEB_IMG_PATH) . '2rightarrow.gif" border="0" /></a>';
        } else {
            $detailsLink = '<a href="myStudents.php?student=' . $student_id . '">
				             <img src="' . api_get_path(WEB_IMG_PATH) . '2rightarrow.gif" border="0" /></a>';
        }
        $row[] = $detailsLink;
        $all_datas[] = $row;
    }
    return $all_datas;
}

/**
 * @param int $user_id
 * @param int $courseId
 * @param int $session_id
 * @return array
 */
function api_detect_user_roles($user_id, $courseId, $session_id = 0)
{
    $user_roles = array();
    /*$user_info = api_get_user_info($user_id);
      $user_roles[] = $user_info['status'];*/
    $courseInfo = api_get_course_info_by_id($courseId);
    $course_code = $courseInfo['code'];
    $url_id = api_get_current_access_url_id();
    if (api_is_platform_admin_by_id($user_id, $url_id)) {
        $user_roles[] = PLATFORM_ADMIN;
    }
    /*if (api_is_drh()) {
          $user_roles[] = DRH;
      }*/
    if (!empty($session_id)) {
        if (SessionManager::user_is_general_coach($user_id, $session_id)) {
            $user_roles[] = SESSION_GENERAL_COACH;
        }
    }
    if (!empty($course_code)) {
        if (empty($session_id)) {
            if (CourseManager::is_course_teacher($user_id, $course_code)) {
                $user_roles[] = COURSEMANAGER;
            }
            if (CourseManager::get_tutor_in_course_status($user_id, $course_code)) {
                $user_roles[] = COURSE_TUTOR;
            }
            if (CourseManager::is_user_subscribed_in_course($user_id, $course_code)) {
                $user_roles[] = COURSE_STUDENT;
            }
        } else {
            $user_status_in_session = SessionManager::get_user_status_in_course_session($user_id, $courseId, $session_id);
            if (!empty($user_status_in_session)) {
                if ($user_status_in_session == 0) {
                    $user_roles[] = SESSION_STUDENT;
                }
                if ($user_status_in_session == 2) {
                    $user_roles[] = SESSION_COURSE_COACH;
                }
            }
            /*if (api_is_course_session_coach($user_id, $course_code, $session_id)) {
                 $user_roles[] = SESSION_COURSE_COACH;
              }*/
        }
    }
    return $user_roles;
}