Move code around a bit

agenda/trip.py

@@ -1,6 +1,7 @@
 """Trips."""
 
 import os
+import typing
 from datetime import date, datetime, time
 from zoneinfo import ZoneInfo
 
@@ -121,6 +122,29 @@ def build_trip_list(
     return [trip for _, trip in sorted(trips.items())]
 
 
+def add_coordinates_for_unbooked_flights(
+    routes: list[StrDict], coordinates: list[StrDict]
+) -> None:
+    """Add coordinates for flights that haven't been booked yet."""
+    if not (
+        any(route["type"] == "unbooked_flight" for route in routes)
+        and not any(pin["type"] == "airport" for pin in coordinates)
+    ):
+        return
+
+    data_dir = flask.current_app.config["PERSONAL_DATA"]
+    airports = typing.cast(dict[str, StrDict], travel.parse_yaml("airports", data_dir))
+    lhr = airports["LHR"]
+    coordinates.append(
+        {
+            "name": lhr["name"],
+            "type": "airport",
+            "latitude": lhr["latitude"],
+            "longitude": lhr["longitude"],
+        }
+    )
+
+
 def collect_trip_coordinates(trip: Trip) -> list[StrDict]:
     """Extract and deduplicate airport and station coordinates from trip."""
     stations = {}