Calculate flight distances

agenda/travel.py

@@ -14,6 +14,31 @@ Leg = dict[str, str]
 
 TravelList = list[dict[str, typing.Any]]
 
+RouteDistances = dict[tuple[str, str], float]
+
+
+def coords(airport: StrDict) -> tuple[float, float]:
+    """Longitude / Latitude as coordinate tuples."""
+    # return (airport["longitude"], airport["latitude"])
+    return (airport["latitude"], airport["longitude"])
+
+
+def flight_distance(f: StrDict) -> float:
+    """Distance of flight."""
+    return float(geodesic(coords(f["from_airport"]), coords(f["to_airport"])).km)
+
+
+def route_distances_as_json(route_distances: RouteDistances) -> str:
+    """Format route distances as JSON string."""
+    return (
+        "[\n"
+        + ",\n".join(
+            "  " + json.dumps([s1, s2, dist])
+            for (s1, s2), dist in route_distances.items()
+        )
+        + "\n]"
+    )
+
 
 def parse_yaml(travel_type: str, data_dir: str) -> TravelList:
     """Parse flights YAML and return list of travel."""
@@ -67,9 +92,6 @@ def all_events(data_dir: str) -> list[Event]:
     return get_trains(data_dir) + get_flights(data_dir)
 
 
-RouteDistances = dict[tuple[str, str], float]
-
-
 def train_leg_distance(geojson_data: StrDict) -> float:
     """Calculate the total length of a LineString in kilometers from GeoJSON data."""
     # Extract coordinates
@@ -81,7 +103,6 @@ def train_leg_distance(geojson_data: StrDict) -> float:
     else:
         first_object["type"] == "MultiLineString"
         coord_list = first_object["coordinates"]
-    # pprint(coordinates)
 
     total_length_km = 0.0
 

agenda/trip.py

@@ -1,3 +1,5 @@
+"""Trips."""
+
 import os
 from datetime import date, datetime, time
 from zoneinfo import ZoneInfo
@@ -73,6 +75,8 @@ def load_flights(data_dir: str) -> list[StrDict]:
             flight["to_airport"] = airports[flight["to"]]
         if "airline" in flight:
             flight["airline_name"] = airlines.get(flight["airline"], "[unknown]")
+
+        flight["distance"] = travel.flight_distance(flight)
     return flights