public GPRMCData ProcessGPRMC(string data)
{
string[] fields = data.Split(',');
GPRMCData GPRMC = new GPRMCData();
GPRMC.TimeStamp = new DateTime(
Convert.ToInt32(fields[9].Substring(4, 2)) + 2000, // year
Convert.ToInt32(fields[9].Substring(2, 2)), // month
Convert.ToInt32(fields[9].Substring(0, 2)), // day
Convert.ToInt32(fields[1].Substring(0, 2)), // hour
Convert.ToInt32(fields[1].Substring(2, 2)), // minute
Convert.ToInt32(fields[1].Substring(4, 2)), // second
DateTimeKind.Utc);
GPRMC.DataValid = Convert.ToChar(fields[2]);
//Latitude
GPRMC.Latitude = DDMMSSToDecimalDegrees(fields[3]);
if (fields[4] == "S")
{
GPRMC.Latitude = GPRMC.Latitude * -1;
}
//Longitude
GPRMC.Longitude = DDMMSSToDecimalDegrees(fields[5]);
if (fields[6] == "W")
{
GPRMC.Longitude = GPRMC.Longitude * -1;
}
GPRMC.GroundSpeed = Convert.ToSingle(fields[7]);
if (!String.IsNullOrEmpty(fields[8]))
{
GPRMC.Bearing = Convert.ToSingle(fields[8]);
}
return(GPRMC);
}
public string Report(string data)
{
string[] parts = data.Split('|');
if (parts.Length != 14)
{
return("Incomplete");
}
Tracking trackingData = new Tracking();
trackingData.ServerTimeStamp = DateTime.UtcNow;
trackingData.IMEI = parts[0].Substring(4);
trackingData.EventType = Convert.ToInt32(parts[1].Substring(0, 2), 16);
string gprmc = parts[1].Substring(2);
if (gprmc.StartsWith("$GPRMC"))
{
GPRMCData gprmcData = ProcessGPRMC(gprmc);
trackingData.SatelliteTimeStamp = gprmcData.TimeStamp;
trackingData.SatelliteFixStatus = new string(gprmcData.DataValid, 1);
trackingData.Latitude = gprmcData.Latitude;
trackingData.Longitude = gprmcData.Longitude;
trackingData.Speed = gprmcData.GroundSpeed * 1.852f; // knots -> kmph
trackingData.Bearing = gprmcData.Bearing;
}
else
{
trackingData.SatelliteFixStatus = "V";
}
trackingData.PDOP = Convert.ToSingle(parts[2]);
trackingData.HDOP = Convert.ToSingle(parts[3]);
trackingData.VDOP = Convert.ToSingle(parts[4]);
trackingData.IOStatus = parts[5];
trackingData.DeviceTimeStamp = new DateTime(
Convert.ToInt32(parts[6].Substring(0, 4)), // year
Convert.ToInt32(parts[6].Substring(4, 2)), // month
Convert.ToInt32(parts[6].Substring(6, 2)), // day
Convert.ToInt32(parts[6].Substring(8, 2)), // hour
Convert.ToInt32(parts[6].Substring(10, 2)), // minute
Convert.ToInt32(parts[6].Substring(12, 2)), // second
DateTimeKind.Utc);
trackingData.ChargeStatus = parts[7][0] == '1';
trackingData.BatteryVoltage = Convert.ToSingle(parts[7].Substring(1, 3)) / 100.0f;
trackingData.InputVoltage = Convert.ToSingle(parts[7].Substring(4)) / 100.0f;
trackingData.ADC0 = Convert.ToSingle(parts[8].Substring(0, 4)) / 100.0f;
trackingData.ADC1 = Convert.ToSingle(parts[8].Substring(4, 4)) / 100.0f;
trackingData.LocationCode = Convert.ToInt32(parts[9].Substring(0, 4), 16);
trackingData.CellID = Convert.ToInt32(parts[9].Substring(4, 4), 16);
trackingData.Mileage = Convert.ToDouble(parts[11]);
trackingData.Serial = Convert.ToInt32(parts[12]);
if (trackingData.SatelliteFixStatus == "A")
{
trackingData.Address = ReverseGeocode(trackingData.Latitude, trackingData.Longitude);
}
Device device = db.Devices.Include("GeoArea").SingleOrDefault(d => d.IMEI == trackingData.IMEI);
if (trackingData.SatelliteFixStatus == "A" && device != null && device.GeoArea != null)
{
string[] lls = device.GeoArea.LatLongs.Split('|');
int count = lls.Length;
double[] polyX = new double[count];
double[] polyY = new double[count];
for (int k = 0; k < count; k++)
{
string[] ll = lls[k].Split(',');
polyX[k] = Convert.ToDouble(ll[0]);
polyY[k] = Convert.ToDouble(ll[1]);
}
bool oddNodes = false;
int i, j = count - 1;
double x = trackingData.Latitude;
double y = trackingData.Longitude;
for (i = 0; i < count; i++)
{
if (polyY[i] < y && polyY[j] >= y || polyY[j] < y && polyY[i] >= y)
{
if (polyX[i] + (y - polyY[i]) / (polyY[j] - polyY[i]) * (polyX[j] - polyX[i]) < x)
{
oddNodes = !oddNodes;
}
}
j = i;
}
trackingData.GeofenceStatus = oddNodes ? "in" : "out";
}
db.TrackingData.Add(trackingData);
db.SaveChanges();
SendNotifications(trackingData);
return("OK");
}
