public async Task <IActionResult> GetRulesAsync(bool update = false)
        {
            try
            {
                _logger?.LogDebug("GetRulesAsync()...");

                if (_zipato.IsLocal)
                {
                    return(StatusCode(StatusCodes.Status501NotImplemented, "Not implemented in local connection."));
                }

                if (!_zipato.IsLocked)
                {
                    return(StatusCode(StatusCodes.Status406NotAcceptable, "Locked: update not yet finished."));
                }

                if (update)
                {
                    var(rules, status) = await _zipato.DataReadRulesAsync();

                    if (status.IsGood)
                    {
                        return(Ok(rules));
                    }
                    else
                    {
                        return(StatusCode(StatusCodes.Status502BadGateway, status));
                    }
                }
                else
                {
                    var rules = _zipato.Data.Rules.Select(r => r.ToRuleData()).ToList();
                    return(Ok(rules));
                }
            }
            catch (Exception ex)
            {
                return(StatusCode(StatusCodes.Status500InternalServerError, ex.Message));
            }
        }