public async Task <GetDetailedCustomerPageResponse> Handle(GetDetailedCustomerPageRequest request,
CancellationToken cancellationToken)
{
if (!_validator.Validate(request).IsValid)
{
return(new GetDetailedCustomerPageResponse(new [] { new Error("InvalidRequest", "Parameters are incorrect.") }));
}
var applianceInfoTask = _applianceService.GetApplianceInfo(request.CustomerGuid);
var applianceTask = _applianceService.GetCustomerAppliances(request.CustomerGuid);
var responseTask = _applianceService.GetCustomerApplianceHistory(request.CustomerGuid, request.Interval, request.IntervalOffset);
await Task.WhenAll(responseTask, applianceInfoTask, applianceTask);
var applianceMap = applianceTask.Result.ToDictionary(x => x.ApplianceId, x => x);
var applianceInfo = applianceInfoTask.Result;
var response = responseTask.Result;
if (response == null)
{
return(new GetDetailedCustomerPageResponse(new [] { new Error("CouldNotFetchData", "Remote Api did not return any data") }));
}
var skips = SkipsDictionary[request.Interval];
var startTime = DateTimeOffset.FromUnixTimeSeconds(response.Timestamps.FirstOrDefault());
var intervalStart = response.Timestamps.Count - skips * (request.IntervalOffset + 1);
if (intervalStart < 0)
{
return(new GetDetailedCustomerPageResponse(new []
{
new Error("InvalidRequest", $"Invalid {nameof(request.IntervalOffset)} parameter: {request.IntervalOffset}.")
}));
}
var intervalStop = intervalStart + skips - 1;
var intervalStartTime = DateTimeOffset.FromUnixTimeSeconds(response.Timestamps[intervalStart]);
var intervalStopTime = DateTimeOffset.FromUnixTimeSeconds(response.Timestamps[intervalStop]);
var endTime = DateTimeOffset.FromUnixTimeSeconds(response.Timestamps.LastOrDefault());
var dataPointFreq = response.Timestamps.Count / 60;
var appliances = response.ApplianceTypes.SelectMany(x => x.Appliances, (p, c) =>
{
return(new ApplianceUsageDto
{
Appliance = applianceMap.ContainsKey((int)c.ApplianceId) ? applianceMap[(int)c.ApplianceId] : null,
TotalAverageUsage = (short?)c.CalculateTotalAverage(),
CurrentAverageUsage = (short?)c.PowerConsumption.Skip(intervalStart)
.Take(intervalStop - intervalStart).Average(x => x ?? 0),
UsagePoints = c.GetIntervalEveryNthPoint(dataPointFreq)
});
}).ToList();
_applianceService.AddApplianceInfo(appliances.Select(x => x.Appliance), applianceInfo);
return(new GetDetailedCustomerPageResponse(new CustomerDetailedPageDto
{
StartTime = startTime,
StartTimeInterval = intervalStartTime,
EndTimeInterval = intervalStopTime,
EndTime = endTime,
Appliances = appliances,
DataPointEvery = response.Timestamps[dataPointFreq] - response.Timestamps[0]
}));
}