private Dictionary <string, object> CreateGeoJsonProperties(VehicleLocation location)
{
DateTime datetime = CreateLocalTimestamp(location);
var properties = new Dictionary <string, object>();
properties.Add("heading", location.Heading);
properties.Add("colour", _routeColourService.Get(location.ServiceName)?.Colour);
properties.Add("text_colour", _routeColourService.Get(location.ServiceName)?.TextColor);
properties.Add("name", location.ServiceName);
properties.Add("vehicleId", location.VehicleId);
properties.Add("last_update", datetime.ToString());
properties.Add("destination", location.Destination);
return(properties);
}
public async void OnNext(VehicleLocation[] vehicleUpdates)
{
if (vehicleUpdates == null)
{
return;
}
foreach (var update in vehicleUpdates)
{
var vehicleId = update.VehicleId;
VehicleLocation existingRecord;
var recordExists = _latest.TryGetValue(vehicleId, out existingRecord);
if (!recordExists)
{
_latest.TryAdd(vehicleId, update);
}
if (update.LastGpsFix > existingRecord?.LastGpsFix && (update.ServiceName != null || update.JourneyId != null))
{
var timestamp = CreateLocalTimestamp(update);
var properties = new Dictionary <string, object>();
properties.Add("heading", update.Heading);
properties.Add("colour", _routeColourService.Get(update.ServiceName)?.Colour);
properties.Add("text_colour", _routeColourService.Get(update.ServiceName)?.TextColor);
properties.Add("name", update.ServiceName);
properties.Add("vehicleId", update.VehicleId);
properties.Add("last_update", timestamp);
properties.Add("destination", update.Destination);
var position = new Position(update.Longitude, update.Latitude);
var point = new Point(position);
var feature = new Feature(point, properties);
var collection = new FeatureCollection(new List <Feature> {
feature
});
await _hubContext.Clients.All.SendAsync("ReceiveMessage", collection.ToJson());
_latest[vehicleId] = update;
}
}
}