Fix liter per 100 km calculation for multiple cars

src/Vegasco.Server.Api/Consumptions/GetConsumptions.cs

@@ -51,34 +51,38 @@ public static class GetConsumptions
 		ApplicationDbContext dbContext,
 		CancellationToken cancellationToken)
 	{
-		List<Consumption> consumptions = await dbContext.Consumptions
+		Dictionary<CarId, List<Consumption>> consumptionsByCar = await dbContext.Consumptions
 			.OrderByDescending(x => x.DateTime)
 			.Include(x => x.Car)
-			.ToListAsync(cancellationToken);
+			.GroupBy(x => x.CarId)
+			.ToDictionaryAsync(x => x.Key, x => x.ToList(), cancellationToken);
 
 		List<ResponseDto> responses = [];
 
-		for (int i = 0; i < consumptions.Count; i++)
+		foreach (var consumptions in consumptionsByCar.Select(x => x.Value))
 		{
-			Consumption consumption = consumptions[i];
+			for (int i = 0; i < consumptions.Count; i++)
-
-			double? literPer100Km = null;
-
-			bool isLast = i == consumptions.Count - 1;
-			if (!isLast)
 			{
-				Consumption previousConsumption = consumptions[i + 1];
+				Consumption consumption = consumptions[i];
-				double distanceDiff = consumption.Distance - previousConsumption.Distance;
-				literPer100Km = consumption.Amount / (distanceDiff / 100);
-			}
 
-			responses.Add(new ResponseDto(
+				double? literPer100Km = null;
-				consumption.Id.Value,
+
-				consumption.DateTime,
+				bool isLast = i == consumptions.Count - 1;
-				consumption.Distance,
+				if (!isLast)
-				consumption.Amount,
+				{
-				CarDto.FromCar(consumption.Car),
+					Consumption previousConsumption = consumptions[i + 1];
-				literPer100Km));
+					double distanceDiff = consumption.Distance - previousConsumption.Distance;
+					literPer100Km = consumption.Amount / (distanceDiff / 100);
+				}
+
+				responses.Add(new ResponseDto(
+					consumption.Id.Value,
+					consumption.DateTime,
+					consumption.Distance,
+					consumption.Amount,
+					CarDto.FromCar(consumption.Car),
+					literPer100Km));
+			}
 		}
 
 		ApiResponse apiResponse = new() { Consumptions = responses };