public function getPermissions()
    {
        // return permissions if they have already been requested
        if(Session::get("usersPermission")) {
            self::$permissions = Session::get("usersPermission");
            return Session::get("usersPermission");
        }
        // return permissions if they have already been requested
        if(self::$permissions) {
            return self::$permissions;
        }

        $groupIDs = [];
        foreach (Auth::user()->roles as $group) {
            if ($group->isDefault) {
                self::$permissions["global"]["isDefault"] = true;
            }
            $groupIDs[] = $group->groupID;
        }

        $permissions = Permission::whereIn("groupID", $groupIDs)->get();

        // save values in keys & values for easy access
        foreach ($permissions as $permission) {
            self::$permissions[$permission->app][$permission->key] = [
              'value' => ($permission->ids !== null) ? array_values(json_decode($permission->ids, true)) : $permission->value,
              'hasAll' => $permission['hasAll']
            ];
        }
        Session::put("usersPermission", self::$permissions);
        return self::$permissions;
    }