feat(server): provide leg counts independent of itinerary (eqasim-org#221)

* feat(server): specify routing parameters for the whole batch

* feat: provide leg counts independent of itinerary

Author: sebhoerl

server/src/main/java/org/eqasim/server/services/router/transit/TransitRouterResponse.java

@@ -25,6 +25,9 @@ public class TransitRouterResponse {
 	@JsonProperty("in_vehicle_distance_by_mode_km")
 	public Map<String, Double> inVehicleDistanceByMode_km = new HashMap<>();
 
+	@JsonProperty("vehicle_legs_by_mode")
+	public Map<String, Integer> vehicleLegsByMode = new HashMap<>();
+
 	@JsonProperty("access_walk_time_min")
 	public double accessWalkTime_min;
 

server/src/main/java/org/eqasim/server/services/router/transit/TransitRouterService.java

@@ -283,10 +283,12 @@ public TransitRouterResponse processRequest(TransitRouterRequest request, @Nulla
 					if (!response.inVehicleTravelTimeByMode_min.containsKey(mode)) {
 						response.inVehicleTravelTimeByMode_min.put(mode, 0.0);
 						response.inVehicleDistanceByMode_km.put(mode, 0.0);
+						response.vehicleLegsByMode.put(mode, 0);
 					}
 
 					response.inVehicleTravelTimeByMode_min.compute(mode, (m, v) -> v + inVehicleTime / 60.0);
 					response.inVehicleDistanceByMode_km.compute(mode, (m, v) -> v + distance * 1e-3);
+					response.vehicleLegsByMode.compute(mode, (m, v) -> v + 1);
 
 					if (request.provideItinerary) {
 						TransitRouterResponse.Itinerary.ItineraryLeg leg = new TransitRouterResponse.Itinerary.ItineraryLeg();