Method getUserRight

/**
 * Method to check if the user have access to category
 * Display or hide the not accessible categories - subcat folder will be not displayed
 * Check whether category access level allows access
 *
 * E.g.: Should the link to Subcategory or to Parentcategory be displayed
 * E.g.: Should the delete button displayed, should be the upload button displayed
 *
 * @param string $params rightType: accessuserid, uploaduserid, deleteuserid - access, upload, delete right
 * @param int $params rightUsers - All selected users which should have the "rightType" right
 * @param int $params rightGroup - All selected Groups of users(public, registered or special ) which should have the "rT" right
 * @param int $params userAID - Specific group of user who display the category in front (public, special, registerd)
 * @param int $params userId - Specific id of user who display the category in front (1,2,3,...)
 * @param int $params Additional param - e.g. $display_access_category (Should be unaccessed category displayed)
 * @return boolean 1 or 0
 * $rightUsers -> $userId
 * $rightGroup -> $userAID
 */
public static function getUserRight($rightType = 'accessuserid', $rightUsers = array(), $rightGroup = 0, $userAID = array(), $userId = 0, $additionalParam = 0)
{
    $user = Factory::getUser();
    // we can get the variables here, not before function call
    $userAID = $user->getAuthorisedViewLevels();
    $userId = $user->get('id', 0);
    $guest = 0;
    if (isset($user->guest) && $user->guest == 1) {
        $guest = 1;
    }
    // User ACL
    $rightGroupAccess = 0;
    // User can be assigned to different groups
    foreach ($userAID as $keyUserAID => $valueUserAID) {
        if ((int) $rightGroup == (int) $valueUserAID) {
            $rightGroupAccess = 1;
            break;
        }
    }
    $rightUsersIdArray = array();
    if (!empty($rightUsers)) {
        $rightUsersIdArray = explode(',', trim($rightUsers));
    } else {
        $rightUsersIdArray = array();
    }
    $rightDisplay = 1;
    if ($additionalParam == 0) {
        // We want not to display unaccessable categories ($display_access_category)
        if ($rightGroup != 0) {
            if ($rightGroupAccess == 0) {
                $rightDisplay = 0;
            } else {
                // Access level only for one registered user
                if (!empty($rightUsersIdArray)) {
                    // Check if the user is contained in selected array
                    $userIsContained = 0;
                    foreach ($rightUsersIdArray as $key => $value) {
                        if ($userId == $value) {
                            $userIsContained = 1;
                            // check if the user id is selected in multiple box
                            break;
                            // don't search again
                        }
                        // for access (-1 not selected - all registered, 0 all users)
                        if ($value == -1) {
                            if ($guest == 0) {
                                $userIsContained = 1;
                                // in multiple select box is selected - All registered users
                            }
                            break;
                            // don't search again
                        }
                    }
                    if ($userIsContained == 0) {
                        $rightDisplay = 0;
                    }
                } else {
                    // Access rights (Default open for all)
                    // Upload and Delete rights (Default closed for all)
                    switch ($rightType) {
                        case 'accessuserid':
                            $rightDisplay = 1;
                            break;
                        default:
                            $rightDisplay = 0;
                            break;
                    }
                }
            }
        }
    }
    return $rightDisplay;
}