Add leg type to GraphQL API

src/main/java/org/opentripplanner/apis/gtfs/datafetchers/LegImpl.java

@@ -9,6 +9,8 @@
 import org.opentripplanner.apis.gtfs.GraphQLRequestContext;
 import org.opentripplanner.apis.gtfs.generated.GraphQLDataFetchers;
 import org.opentripplanner.apis.gtfs.generated.GraphQLTypes;
+import org.opentripplanner.apis.gtfs.generated.GraphQLTypes.GraphQLLegType;
+import org.opentripplanner.apis.gtfs.mapping.LegTypeMapper;
 import org.opentripplanner.apis.gtfs.mapping.NumberMapper;
 import org.opentripplanner.ext.restapi.mapping.LocalDateMapper;
 import org.opentripplanner.ext.ridehailing.model.RideEstimate;
@@ -262,6 +264,12 @@ public DataFetcher<Trip> trip() {
     return environment -> getSource(environment).getTrip();
   }
 
+  @Override
+  public DataFetcher<GraphQLLegType> type() {
+    return environment ->
+      LegTypeMapper.map(getSource(environment));
+  }
+
   @Override
   public DataFetcher<Boolean> walkingBike() {
     return environment -> getSource(environment).getWalkingBike();

src/main/java/org/opentripplanner/apis/gtfs/generated/GraphQLDataFetchers.java

@@ -524,6 +524,8 @@ public interface GraphQLLeg {
 
     public DataFetcher<Trip> trip();
 
+    public DataFetcher<org.opentripplanner.apis.gtfs.generated.GraphQLTypes.GraphQLLegType> type();
+
     public DataFetcher<Boolean> walkingBike();
   }
 

src/main/java/org/opentripplanner/apis/gtfs/generated/GraphQLTypes.java

@@ -1268,6 +1268,12 @@ public void setGraphQLOriginModesWithParentStation(
     }
   }
 
+  public enum GraphQLLegType {
+    FLEX,
+    SCHEDULED_TRANSIT,
+    STREET,
+  }
+
   public static class GraphQLLocalDateRangeInput {
 
     private java.time.LocalDate end;

src/main/java/org/opentripplanner/apis/gtfs/generated/graphql-codegen.yml

@@ -125,4 +125,5 @@ config:
     FareMedium: org.opentripplanner.model.fare.FareMedium#FareMedium
     RiderCategory: org.opentripplanner.model.fare.RiderCategory#RiderCategory
     StopPosition: org.opentripplanner.apis.gtfs.model.StopPosition#StopPosition
+    LegType: org.opentripplanner.apis.gtfs.generated.GraphQLTypes.GraphQLLegType
 

src/main/java/org/opentripplanner/apis/gtfs/mapping/LegTypeMapper.java

@@ -0,0 +1,22 @@
+package org.opentripplanner.apis.gtfs.mapping;
+
+import javax.annotation.Nonnull;
+import org.opentripplanner.apis.gtfs.generated.GraphQLTypes;
+import org.opentripplanner.ext.flex.FlexibleTransitLeg;
+import org.opentripplanner.model.plan.Leg;
+import org.opentripplanner.model.plan.ScheduledTransitLeg;
+import org.opentripplanner.model.plan.StreetLeg;
+
+public class LegTypeMapper {
+
+
+  @Nonnull
+  public static GraphQLTypes.GraphQLLegType map(Leg source) {
+    return switch (source) {
+      case StreetLeg ignored -> GraphQLTypes.GraphQLLegType.STREET;
+      case FlexibleTransitLeg ignored -> GraphQLTypes.GraphQLLegType.FLEX;
+      case ScheduledTransitLeg ignored -> GraphQLTypes.GraphQLLegType.SCHEDULED_TRANSIT;
+      default -> throw new IllegalStateException("Unhandled leg type: " + source);
+    };
+  }
+}

src/main/resources/org/opentripplanner/apis/gtfs/schema.graphqls

@@ -741,6 +741,8 @@ type Leg {
   transitLeg: Boolean
   "For transit legs, the trip that is used for traversing the leg. For non-transit legs, `null`."
   trip: Trip
+  "What the type of the leg is."
+  type: LegType!
   "Whether this leg is walking with a bike."
   walkingBike: Boolean
 }
@@ -2886,6 +2888,18 @@ enum ItineraryFilterDebugProfile {
   OFF
 }
 
+enum LegType {
+  """
+  Leg is on a flexible trip that uses flexible time windows, areas or groups of stops. This may or may not be classed
+  as transit, depending the type of service.
+  """
+  FLEX
+  "Leg is on a transit vehicle like bus, train or ferry which follows a published schedule, potentially with added real time information."
+  SCHEDULED_TRANSIT
+  "Leg traverses the street network, for example by walking to a stop, using a rental scooter or driving."
+  STREET
+}
+
 "Identifies whether this stop represents a stop or station."
 enum LocationType {
   ENTRANCE

src/test/resources/org/opentripplanner/apis/gtfs/expectations/plan-extended.json

@@ -17,6 +17,7 @@
           "walkTime" : 20,
           "legs" : [
             {
+              "type" : "STREET",
               "mode" : "WALK",
               "start" : {
                 "scheduledTime" : "2020-02-02T11:00:00Z",
@@ -67,6 +68,7 @@
               "accessibilityScore" : null
             },
             {
+              "type" : "SCHEDULED_TRANSIT",
               "mode" : "BUS",
               "start" : {
                 "scheduledTime" : "2020-02-02T10:51:00Z",
@@ -157,6 +159,7 @@
               "accessibilityScore" : null
             },
             {
+              "type" : "SCHEDULED_TRANSIT",
               "mode" : "RAIL",
               "start" : {
                 "scheduledTime" : "2020-02-02T11:20:00Z",
@@ -267,6 +270,7 @@
               "accessibilityScore" : null
             },
             {
+              "type" : "STREET",
               "mode" : "CAR",
               "start" : {
                 "scheduledTime" : "2020-02-02T11:50:00Z",

src/test/resources/org/opentripplanner/apis/gtfs/queries/plan-extended.graphql

@@ -26,6 +26,7 @@
       walkDistance
       walkTime
       legs {
+        type
         mode
         start {
           scheduledTime