public async Task TestDataReadCameras()
        {
            var(result, status) = await _zipato.DataReadCamerasAsync();

            Assert.Equal(DataValue.Good, status);
            Assert.NotEmpty(result);
        }
        public async Task <IActionResult> GetCamerasAsync(bool update = false)
        {
            try
            {
                _logger?.LogDebug("GetCamerasAsync()...");

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

                if (update)
                {
                    var(cameras, status) = await _zipato.DataReadCamerasAsync();

                    if (status.IsGood)
                    {
                        return(Ok(cameras));
                    }
                    else
                    {
                        return(StatusCode(StatusCodes.Status502BadGateway, status));
                    }
                }
                else
                {
                    var cameras = _zipato.Data.Cameras.Select(c => c.ToCameraData()).ToList();
                    return(Ok(cameras));
                }
            }
            catch (Exception ex)
            {
                return(StatusCode(StatusCodes.Status500InternalServerError, ex.Message));
            }
        }