public async Task <MeanAirTime> GetMeanAirTime()
{
var meanAirTime = new MeanAirTime();
int ewrCount, jfkCount, lgaCount;
ewrCount = jfkCount = lgaCount = 0;
await context.Flights.ForEachAsync(i =>
{
switch (i.Origin)
{
case "EWR":
meanAirTime.EWR += i.Air_Time ?? 0;
ewrCount++;
break;
case "JFK":
meanAirTime.JFK += i.Air_Time ?? 0;
jfkCount++;
break;
case "LGA":
meanAirTime.LGA += i.Air_Time ?? 0;
lgaCount++;
break;
}
});
meanAirTime.EWR /= ewrCount;
meanAirTime.JFK /= jfkCount;
meanAirTime.LGA /= lgaCount;
return(meanAirTime);
}
public async Task <ChartData> GetChartData()
{
var flightsPerMonth = new List <MonthFlightNumber>();
for (int i = 1; i < 13; i++)
{
flightsPerMonth.Add(new MonthFlightNumber()
{
Month = i
});
}
var flightsPerMonthFromOrigins = new List <FlightsFromOriginsPerMonth>();
var flightsPerMonthFromOriginPercentage = new List <FlightsFromOriginsPerMonth>();
var topTenDestinationsByFlights = new List <DestinationFlightCount>();
var topTenDestinationsByFlightsFromOrigins = new List <AirportNameMainAirportsCount>();
var meanAirTime = new MeanAirTime();
int ewrCount, jfkCount, lgaCount;
ewrCount = jfkCount = lgaCount = 0;
var originsDelaysCounted = new OriginDelaysCounted();
await context.Flights.ForEachAsync(flight =>
{
// First requirement
flightsPerMonth.Find(x => x.Month == flight.Month).NumberOfFlights++;
// Second requirement
if (!flightsPerMonthFromOrigins.Any(x => x.Month == flight.Month))
{
flightsPerMonthFromOrigins.Add(new FlightsFromOriginsPerMonth()
{
Month = flight.Month
});
}
switch (flight.Origin)
{
case "EWR":
flightsPerMonthFromOrigins.Find(x => x.Month == flight.Month).EWR++;
break;
case "JFK":
flightsPerMonthFromOrigins.Find(x => x.Month == flight.Month).JFK++;
break;
case "LGA":
flightsPerMonthFromOrigins.Find(x => x.Month == flight.Month).LGA++;
break;
}
// Fourth requirement
if (!topTenDestinationsByFlights.Any(x => x.Dest == flight.Dest))
{
topTenDestinationsByFlights.Add(new DestinationFlightCount()
{
Dest = flight.Dest
});
}
topTenDestinationsByFlights.Find(x => x.Dest == flight.Dest).FlightsCount++;
// Fifth requirement
if (!topTenDestinationsByFlightsFromOrigins.Any(x => x.AirportName == flight.Dest))
{
topTenDestinationsByFlightsFromOrigins.Add(new AirportNameMainAirportsCount()
{
AirportName = flight.Dest
});
}
switch (flight.Origin)
{
case "EWR":
topTenDestinationsByFlightsFromOrigins.Find(x => x.AirportName == flight.Dest).EWR++;
break;
case "JFK":
topTenDestinationsByFlightsFromOrigins.Find(x => x.AirportName == flight.Dest).JFK++;
break;
case "LGA":
topTenDestinationsByFlightsFromOrigins.Find(x => x.AirportName == flight.Dest).LGA++;
break;
}
// Sixth requirement
switch (flight.Origin)
{
case "EWR":
meanAirTime.EWR += flight.Air_Time ?? 0;
ewrCount++;
break;
case "JFK":
meanAirTime.JFK += flight.Air_Time ?? 0;
jfkCount++;
break;
case "LGA":
meanAirTime.LGA += flight.Air_Time ?? 0;
lgaCount++;
break;
}
//
switch (flight.Origin)
{
case "EWR":
originsDelaysCounted.EWRArrivalDelay.Value += flight.Arr_Delay ?? 0;
originsDelaysCounted.EWRArrivalDelay.Count += flight.Arr_Delay != null ? 1 : 0;
originsDelaysCounted.EWRDepartureDelay.Value += flight.Dep_Delay ?? 0;
originsDelaysCounted.EWRDepartureDelay.Count += flight.Dep_Delay != null ? 1 : 0;
break;
case "JFK":
originsDelaysCounted.JFKArrivalDelay.Value += flight.Arr_Delay ?? 0;
originsDelaysCounted.JFKArrivalDelay.Count += flight.Arr_Delay != null ? 1 : 0;
originsDelaysCounted.JFKDepartureDelay.Value += flight.Dep_Delay ?? 0;
originsDelaysCounted.JFKDepartureDelay.Count += flight.Dep_Delay != null ? 1 : 0;
break;
case "LGA":
originsDelaysCounted.LGAArrivalDelay.Value += flight.Arr_Delay ?? 0;
originsDelaysCounted.LGAArrivalDelay.Count += flight.Arr_Delay != null ? 1 : 0;
originsDelaysCounted.LGADepartureDelay.Value += flight.Dep_Delay ?? 0;
originsDelaysCounted.LGADepartureDelay.Count += flight.Dep_Delay != null ? 1 : 0;
break;
}
});
// Sixth requirement
meanAirTime.EWR /= ewrCount;
meanAirTime.JFK /= jfkCount;
meanAirTime.LGA /= lgaCount;
// Third requirement
flightsPerMonthFromOriginPercentage = flightsPerMonthFromOrigins.Select(x => x.Copy()).ToList();
foreach (var entry in flightsPerMonthFromOriginPercentage)
{
var total = entry.EWR + entry.JFK + entry.LGA;
entry.EWR = entry.EWR * 100 / total;
entry.JFK = entry.JFK * 100 / total;
entry.LGA = entry.LGA * 100 / total;
}
var originDelays = new OriginDelays()
{
EWRArrivalDelay = (double)originsDelaysCounted.EWRArrivalDelay.Value / originsDelaysCounted.EWRArrivalDelay.Count,
EWRDepartureDelay = (double)originsDelaysCounted.EWRDepartureDelay.Value / originsDelaysCounted.EWRDepartureDelay.Count,
JFKArrivalDelay = (double)originsDelaysCounted.JFKArrivalDelay.Value / originsDelaysCounted.JFKArrivalDelay.Count,
JFKDepartureDelay = (double)originsDelaysCounted.JFKDepartureDelay.Value / originsDelaysCounted.JFKDepartureDelay.Count,
LGAArrivalDelay = (double)originsDelaysCounted.LGAArrivalDelay.Value / originsDelaysCounted.LGAArrivalDelay.Count,
LGADepartureDelay = (double)originsDelaysCounted.LGADepartureDelay.Value / originsDelaysCounted.LGADepartureDelay.Count,
};
return(new ChartData()
{
FlightsPerMonth = flightsPerMonth.OrderBy(x => x.Month),
FlightsPerMonthFromOrigins = flightsPerMonthFromOrigins.OrderBy(x => x.Month),
FlightsPerMonthFromOriginPercentage = flightsPerMonthFromOriginPercentage.OrderBy(x => x.Month),
TopTenDestinationsByFlights = topTenDestinationsByFlights.OrderByDescending(x => x.FlightsCount).Take(10),
TopTenDestinationsByFlightsFromOrigins = topTenDestinationsByFlightsFromOrigins.OrderByDescending(x => x.EWR + x.JFK + x.LGA).Take(10),
MeanAirTime = meanAirTime,
OriginDelays = originDelays
});
}