Fix trip map unbooked flight pins and timezone-safe busy date comparisons

agenda/busy.py

@@ -2,7 +2,7 @@
 
 import itertools
 import typing
-from datetime import date, datetime, timedelta
+from datetime import date, datetime, timedelta, timezone
 
 import flask
 import pycountry
@@ -84,13 +84,20 @@ def get_busy_events(
 def _parse_datetime_field(datetime_obj: datetime | date | str) -> tuple[datetime, date]:
     """Parse a datetime field that could be datetime object or string."""
     if isinstance(datetime_obj, datetime):
-        return datetime_obj, datetime_obj.date()
-    if isinstance(datetime_obj, date):
-        return datetime.combine(datetime_obj, datetime.min.time()), datetime_obj
-    if isinstance(datetime_obj, str):
+        dt = datetime_obj
+    elif isinstance(datetime_obj, date):
+        dt = datetime.combine(datetime_obj, datetime.min.time(), tzinfo=timezone.utc)
+    elif isinstance(datetime_obj, str):
         dt = datetime.fromisoformat(datetime_obj.replace("Z", "+00:00"))
-        return dt, dt.date()
-    raise ValueError(f"Invalid datetime format: {datetime_obj}")
+    else:
+        raise ValueError(f"Invalid datetime format: {datetime_obj}")
+
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    else:
+        dt = dt.astimezone(timezone.utc)
+
+    return dt, dt.date()
 
 
 def _get_accommodation_location(

tests/test_busy_timezone.py

@@ -0,0 +1,35 @@
+"""Regression tests for timezone handling in busy location logic."""
+
+from datetime import date, datetime, timezone
+
+import agenda.busy
+from agenda.types import Trip
+
+
+def test_mixed_naive_and_aware_arrivals_do_not_crash() -> None:
+    """Most recent travel should compare mixed timezone styles safely."""
+    trips = [
+        Trip(
+            start=date(2099, 12, 30),
+            travel=[
+                {
+                    "type": "flight",
+                    "arrive": datetime(2100, 1, 1, 10, 0, 0),
+                    "to": "CDG",
+                    "to_airport": {"country": "fr", "city": "Paris"},
+                },
+                {
+                    "type": "flight",
+                    "arrive": datetime(2100, 1, 1, 12, 0, 0, tzinfo=timezone.utc),
+                    "to": "AMS",
+                    "to_airport": {"country": "nl", "city": "Amsterdam"},
+                },
+            ],
+        )
+    ]
+
+    location = agenda.busy._find_most_recent_travel_before_date(date(2100, 1, 1), trips)
+    assert location is not None
+    assert location[0] == "Amsterdam"
+    assert location[1] is not None
+    assert location[1].alpha_2 == "NL"

tests/test_trip.py

@@ -0,0 +1,101 @@
+"""Tests for trip map coordinate assembly."""
+
+from datetime import date
+
+import agenda.trip
+from agenda.types import Trip
+from web_view import app
+
+
+def test_add_coordinates_for_unbooked_flights_adds_missing_airports() -> None:
+    """Unbooked routes should contribute missing airport pins."""
+    routes = [
+        {
+            "type": "unbooked_flight",
+            "key": "LHR_Paris_fr",
+            "from_iata": "LHR",
+            "to_iata": "CDG",
+            "from": (51.47, -0.45),
+            "to": (49.01, 2.55),
+        }
+    ]
+    coordinates = [
+        {
+            "name": "Heathrow Airport",
+            "type": "airport",
+            "latitude": 51.47,
+            "longitude": -0.45,
+        }
+    ]
+    airports = {
+        "LHR": {
+            "name": "Heathrow Airport",
+            "latitude": 51.47,
+            "longitude": -0.45,
+        },
+        "CDG": {
+            "name": "Paris Charles de Gaulle Airport",
+            "latitude": 49.01,
+            "longitude": 2.55,
+        },
+    }
+
+    with app.app_context():
+        original_parse_yaml = agenda.trip.travel.parse_yaml
+        try:
+            agenda.trip.travel.parse_yaml = lambda _name, _data_dir: airports
+            agenda.trip.add_coordinates_for_unbooked_flights(routes, coordinates)
+        finally:
+            agenda.trip.travel.parse_yaml = original_parse_yaml
+
+    airport_names = {
+        coord["name"] for coord in coordinates if coord["type"] == "airport"
+    }
+    assert airport_names == {"Heathrow Airport", "Paris Charles de Gaulle Airport"}
+
+
+def test_get_coordinates_and_routes_adds_unbooked_flight_airports() -> None:
+    """Trip list map data should include pins for unbooked flights."""
+    trips = [Trip(start=date(2026, 7, 20))]
+    unbooked_routes = [
+        {
+            "type": "unbooked_flight",
+            "key": "LHR_Paris_fr",
+            "from_iata": "LHR",
+            "to_iata": "CDG",
+            "from": (51.47, -0.45),
+            "to": (49.01, 2.55),
+        }
+    ]
+    airports = {
+        "LHR": {
+            "name": "Heathrow Airport",
+            "latitude": 51.47,
+            "longitude": -0.45,
+        },
+        "CDG": {
+            "name": "Paris Charles de Gaulle Airport",
+            "latitude": 49.01,
+            "longitude": 2.55,
+        },
+    }
+
+    with app.app_context():
+        original_collect_trip_coordinates = agenda.trip.collect_trip_coordinates
+        original_get_trip_routes = agenda.trip.get_trip_routes
+        original_parse_yaml = agenda.trip.travel.parse_yaml
+        try:
+            agenda.trip.collect_trip_coordinates = lambda _trip: []
+            agenda.trip.get_trip_routes = lambda _trip, _data_dir: unbooked_routes
+            agenda.trip.travel.parse_yaml = lambda _name, _data_dir: airports
+
+            coordinates, _routes = agenda.trip.get_coordinates_and_routes(trips)
+        finally:
+            agenda.trip.collect_trip_coordinates = original_collect_trip_coordinates
+            agenda.trip.get_trip_routes = original_get_trip_routes
+            agenda.trip.travel.parse_yaml = original_parse_yaml
+
+    airport_names = {
+        coord["name"] for coord in coordinates if coord["type"] == "airport"
+    }
+    assert airport_names == {"Heathrow Airport", "Paris Charles de Gaulle Airport"}