Move FlightJs out of MapModel.

game/server/flights/models.py

@@ -0,0 +1,26 @@
+from __future__ import annotations
+
+from uuid import UUID
+
+from dcs.mapping import LatLng
+from pydantic import BaseModel
+
+from game.ato import Flight
+from game.ato.flightstate import InFlight
+
+
+class FlightJs(BaseModel):
+    id: UUID
+    blue: bool
+    position: LatLng | None
+
+    @staticmethod
+    def for_flight(flight: Flight) -> FlightJs:
+        # Don't provide a location for aircraft that aren't in the air. Later we can
+        # expand the model to include the state data for the UI so that it can make its
+        # own decisions about whether or not to draw the aircraft, but for now we'll
+        # filter here.
+        position = None
+        if isinstance(flight.state, InFlight):
+            position = flight.position().latlng()
+        return FlightJs(id=flight.id, blue=flight.blue, position=position)