public static void CalculateStatistics(this StatisticsItem item, List<LocationTrack> dayTrackList, LocationTrack lastTrack)
{
dayTrackList.Sort((t1, t2) => t1.TimeStamp.CompareTo(t2.TimeStamp));
LocationTrack lastSaved = dayTrackList.LastOrDefault();
if (lastSaved == null)
{
return;
}
if (lastSaved.TimeStamp.AddMinutes(10) < lastTrack.TimeStamp)
{
//Difference too much
return;
}
double? distance = lastTrack.Location.Distance(lastSaved.Location);
if (!distance.HasValue)
{
return;
}
decimal co2Index = GetCo2Index(lastTrack.Speed);
decimal distanceValue = Convert.ToDecimal(distance.Value);
decimal co2InKilograms = 0.15m * co2Index * distanceValue / (1000.0m);
const decimal co2RecycleInOneDay = 44.0m / 365.0m;
decimal result = co2InKilograms/co2RecycleInOneDay;
item.Day = lastTrack.TimeStamp.Date;
item.UserProfile = lastTrack.UserProfile;
item.Value += result;
item.Consumer = "Car";
}
private LocationTrack CreateLocationTrack(Position position, string token)
{
UserProfile user = _db.UserProfiles.First(u => u.UserName == token);
var locationTrack = new LocationTrack();
locationTrack.UserProfile = user;
locationTrack.TimeStamp = DateTime.MinValue.Add(TimeSpan.FromTicks(position.UtcTicks));
locationTrack.Location = DbGeography.FromText(string.Format("POINT ({0} {1})",position.Latitude, position.Longitude));
locationTrack.Speed = position.Speed;
locationTrack.Id = Guid.NewGuid();
return locationTrack;
}