public void ProximityGadgetAircraftJson_Constructor_Initialises_To_Known_State_And_Properties_Work()
{
var json = new ProximityGadgetAircraftJson();
TestUtilities.TestProperty(json, "ClosestAircraft", null, new ProximityGadgetClosestAircraftJson());
TestUtilities.TestProperty(json, "WarningMessage", null, "Abc");
Assert.AreEqual(0, json.EmergencyAircraft.Count);
}
/// <summary>
/// See base class.
/// </summary>
/// <param name="server"></param>
/// <param name="args"></param>
/// <returns></returns>
protected override bool DoHandleRequest(Interface.WebServer.IWebServer server, Interface.WebServer.RequestReceivedEventArgs args)
{
bool result = false;
if((!args.IsInternetRequest || _InternetClientCanRequestClosestAircraft) && args.PathAndFile.Equals("/ClosestAircraft.json", StringComparison.OrdinalIgnoreCase)) {
result = true;
var latitude = QueryNDouble(args, "lat");
var longitude = QueryNDouble(args, "lng");
var json = new ProximityGadgetAircraftJson();
if(latitude == null || longitude == null) json.WarningMessage = "Position not supplied";
else {
long timeStamp, dataVersion;
var aircraftList = BaseStationAircraftList.TakeSnapshot(out timeStamp, out dataVersion);
IAircraft closestAircraft = null;
double? closestDistance = null;
foreach(var aircraft in aircraftList) {
double? distance = null;
if(aircraft.Latitude != null && aircraft.Longitude != null) {
distance = GreatCircleMaths.Distance(latitude, longitude, aircraft.Latitude, aircraft.Longitude);
if(distance != null && closestAircraft == null || distance < closestDistance) {
closestAircraft = aircraft;
closestDistance = distance;
}
}
if(aircraft.Emergency == true) json.EmergencyAircraft.Add(CreateProximityGadgetClosestAircraftJson(aircraft, distance, latitude, longitude));
}
if(closestAircraft != null) {
var closestJsonAircraft = CreateProximityGadgetClosestAircraftJson(closestAircraft, closestDistance, latitude, longitude);
json.ClosestAircraft = closestJsonAircraft;
}
}
Responder.SendJson(args.Response, json, null);
args.Classification = ContentClassification.Json;
}
return result;
}
/// <summary>
/// Returns a model given an aircraft list and a point to measure from.
/// </summary>
/// <param name="aircraftList"></param>
/// <param name="originLatitude"></param>
/// <param name="originLongitude"></param>
/// <returns></returns>
public static ProximityGadgetAircraftJson ToModel(IEnumerable <IAircraft> aircraftList, double?originLatitude, double?originLongitude)
{
ProximityGadgetAircraftJson result = null;
if (aircraftList != null)
{
result = new ProximityGadgetAircraftJson();
if (originLatitude == null || originLongitude == null)
{
result.WarningMessage = "Position not supplied";
}
else
{
IAircraft closestAircraft = null;
double? closestDistance = null;
foreach (var aircraft in aircraftList)
{
double?distance = null;
if (aircraft.Latitude != null && aircraft.Longitude != null)
{
distance = GreatCircleMaths.Distance(originLatitude, originLongitude, aircraft.Latitude, aircraft.Longitude);
if (distance != null && closestAircraft == null || distance < closestDistance)
{
closestAircraft = aircraft;
closestDistance = distance;
}
}
if (aircraft.Emergency == true)
{
result.EmergencyAircraft.Add(ProximityGadgetClosestAircraftJson.ToModel(aircraft, originLatitude, originLongitude));
}
}
if (closestAircraft != null)
{
result.ClosestAircraft = ProximityGadgetClosestAircraftJson.ToModel(closestAircraft, originLatitude, originLongitude);
}
}
}
return(result);
}
