Add FastAPI interface between the game and map.

A possible explanation for the infrequent CTDs we've been seeing since
adding fast forward is that QWebChannel doesn't keep a reference to the
python objects that it passes to js, so if the object is GC'd before the
front end is done with it, it crashes.

We don't really like QWebChannel anyway, so this begins replacing that
with FastAPI.

game/server/debuggeometries/__init__.py

@@ -0,0 +1 @@
+from .routes import router

game/server/debuggeometries/models.py

@@ -0,0 +1,126 @@
+from __future__ import annotations
+
+from pydantic import BaseModel, Field
+
+from game import Game
+from game.ato import Flight
+from game.flightplan import HoldZoneGeometry, IpZoneGeometry, JoinZoneGeometry
+from ..leaflet import LeafletPoly, ShapelyUtil
+
+
+class HoldZonesJs(BaseModel):
+    home_bubble: LeafletPoly = Field(alias="homeBubble")
+    target_bubble: LeafletPoly = Field(alias="targetBubble")
+    join_bubble: LeafletPoly = Field(alias="joinBubble")
+    excluded_zones: list[LeafletPoly] = Field(alias="excludedZones")
+    permissible_zones: list[LeafletPoly] = Field(alias="permissibleZones")
+    preferred_lines: list[LeafletPoly] = Field(alias="preferredLines")
+
+    @classmethod
+    def empty(cls) -> HoldZonesJs:
+        return HoldZonesJs(
+            homeBubble=[],
+            targetBubble=[],
+            joinBubble=[],
+            excludedZones=[],
+            permissibleZones=[],
+            preferredLines=[],
+        )
+
+    @classmethod
+    def for_flight(cls, flight: Flight, game: Game) -> HoldZonesJs:
+        target = flight.package.target
+        home = flight.departure
+        if flight.package.waypoints is None:
+            return HoldZonesJs.empty()
+        ip = flight.package.waypoints.ingress
+        join = flight.package.waypoints.join
+        geometry = HoldZoneGeometry(
+            target.position, home.position, ip, join, game.blue, game.theater
+        )
+        return HoldZonesJs(
+            homeBubble=ShapelyUtil.poly_to_leaflet(geometry.home_bubble, game.theater),
+            targetBubble=ShapelyUtil.poly_to_leaflet(
+                geometry.target_bubble, game.theater
+            ),
+            joinBubble=ShapelyUtil.poly_to_leaflet(geometry.join_bubble, game.theater),
+            excludedZones=ShapelyUtil.polys_to_leaflet(
+                geometry.excluded_zones, game.theater
+            ),
+            permissibleZones=ShapelyUtil.polys_to_leaflet(
+                geometry.permissible_zones, game.theater
+            ),
+            preferredLines=ShapelyUtil.lines_to_leaflet(
+                geometry.preferred_lines, game.theater
+            ),
+        )
+
+
+class IpZonesJs(BaseModel):
+    home_bubble: LeafletPoly = Field(alias="homeBubble")
+    ipBubble: LeafletPoly = Field(alias="ipBubble")
+    permissibleZone: LeafletPoly = Field(alias="permissibleZone")
+    safeZones: list[LeafletPoly] = Field(alias="safeZones")
+
+    @classmethod
+    def empty(cls) -> IpZonesJs:
+        return IpZonesJs(homeBubble=[], ipBubble=[], permissibleZone=[], safeZones=[])
+
+    @classmethod
+    def for_flight(cls, flight: Flight, game: Game) -> IpZonesJs:
+        target = flight.package.target
+        home = flight.departure
+        geometry = IpZoneGeometry(target.position, home.position, game.blue)
+        return IpZonesJs(
+            homeBubble=ShapelyUtil.poly_to_leaflet(geometry.home_bubble, game.theater),
+            ipBubble=ShapelyUtil.poly_to_leaflet(geometry.ip_bubble, game.theater),
+            permissibleZone=ShapelyUtil.poly_to_leaflet(
+                geometry.permissible_zone, game.theater
+            ),
+            safeZones=ShapelyUtil.polys_to_leaflet(geometry.safe_zones, game.theater),
+        )
+
+
+class JoinZonesJs(BaseModel):
+    home_bubble: LeafletPoly = Field(alias="homeBubble")
+    target_bubble: LeafletPoly = Field(alias="targetBubble")
+    ip_bubble: LeafletPoly = Field(alias="ipBubble")
+    excluded_zones: list[LeafletPoly] = Field(alias="excludedZones")
+    permissible_zones: list[LeafletPoly] = Field(alias="permissibleZones")
+    preferred_lines: list[LeafletPoly] = Field(alias="preferredLines")
+
+    @classmethod
+    def empty(cls) -> JoinZonesJs:
+        return JoinZonesJs(
+            homeBubble=[],
+            targetBubble=[],
+            ipBubble=[],
+            excludedZones=[],
+            permissibleZones=[],
+            preferredLines=[],
+        )
+
+    @classmethod
+    def for_flight(cls, flight: Flight, game: Game) -> JoinZonesJs:
+        target = flight.package.target
+        home = flight.departure
+        if flight.package.waypoints is None:
+            return JoinZonesJs.empty()
+        ip = flight.package.waypoints.ingress
+        geometry = JoinZoneGeometry(target.position, home.position, ip, game.blue)
+        return JoinZonesJs(
+            homeBubble=ShapelyUtil.poly_to_leaflet(geometry.home_bubble, game.theater),
+            targetBubble=ShapelyUtil.poly_to_leaflet(
+                geometry.target_bubble, game.theater
+            ),
+            ipBubble=ShapelyUtil.poly_to_leaflet(geometry.ip_bubble, game.theater),
+            excludedZones=ShapelyUtil.polys_to_leaflet(
+                geometry.excluded_zones, game.theater
+            ),
+            permissibleZones=ShapelyUtil.polys_to_leaflet(
+                geometry.permissible_zones, game.theater
+            ),
+            preferredLines=ShapelyUtil.lines_to_leaflet(
+                geometry.preferred_lines, game.theater
+            ),
+        )

game/server/debuggeometries/routes.py

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+from uuid import UUID
+
+from fastapi import APIRouter, Depends
+
+from game import Game
+from game.ato import Flight
+from game.server import GameContext
+from .models import HoldZonesJs, IpZonesJs, JoinZonesJs
+
+router = APIRouter(prefix="/debug/waypoint-geometries")
+
+
+# TODO: Maintain map of UUID -> Flight in Game.
+def find_flight(game: Game, flight_id: UUID) -> Flight:
+    for coalition in game.coalitions:
+        for package in coalition.ato.packages:
+            for flight in package.flights:
+                if flight.id == flight_id:
+                    return flight
+    raise KeyError(f"No flight found with ID {flight_id}")
+
+
+@router.get("/hold/{flight_id}")
+def hold_zones(flight_id: UUID, game: Game = Depends(GameContext.get)) -> HoldZonesJs:
+    flight = find_flight(game, flight_id)
+    return HoldZonesJs.for_flight(flight, game)
+
+
+@router.get("/ip/{flight_id}")
+def ip_zones(flight_id: UUID, game: Game = Depends(GameContext.get)) -> IpZonesJs:
+    flight = find_flight(game, flight_id)
+    return IpZonesJs.for_flight(flight, game)
+
+
+@router.get("/join/{flight_id}")
+def join_zones(flight_id: UUID, game: Game = Depends(GameContext.get)) -> JoinZonesJs:
+    flight = find_flight(game, flight_id)
+    return JoinZonesJs.for_flight(flight, game)