public DateTime GetCutOffDateByTimeInterval(DateTime now, ConsumptionTimeInterval duration)
{
switch (duration.TimeUnit)
{
case TimeUnit.SECOND:
return(now.AddSeconds((-1) * duration.Value));
case TimeUnit.MINUTE:
return(now.AddMinutes((-1) * duration.Value));
case TimeUnit.HOUR:
return(now.AddHours((-1) * duration.Value));
case TimeUnit.DAY:
return(now.AddDays((-1) * duration.Value));
default:
return(DateTime.MinValue);
}
}
public async Task <ActionResult> consumption_report(string duration)
{
var timeInterval = new ConsumptionTimeInterval(duration);
if (!timeInterval.IsValid)
{
return(BadRequest("The time interval supplied is invalid"));
}
var cutOffDate = GetCutOffDateByTimeInterval(DateTime.Now, timeInterval);
var consumptionCounterFilteredByDate = await _repository.GetByCutOffDateAsync(cutOffDate);
var consumptionPerVillage = consumptionCounterFilteredByDate
.GroupBy(a => a.VillageName)
.Select(x => new ConsumptionPerVillage(x.Key, x.Sum(y => y.Amount)));
var result = new ConsumptionReport(consumptionPerVillage);
return(Ok(result));
}
