add previousLegs into GTFS GraphQL API

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

@@ -271,8 +271,17 @@ private Leg getSource(DataFetchingEnvironment environment) {
     return environment.getSource();
   }
 
+  @Override
+  public DataFetcher<Iterable<Leg>> previousLegs() {
+    return nextOrPreviousLegs(true);
+  }
+
   @Override
   public DataFetcher<Iterable<Leg>> nextLegs() {
+    return nextOrPreviousLegs(false);
+  }
+
+  private DataFetcher<Iterable<Leg>> nextOrPreviousLegs(boolean includeDepartBefore) {
     return environment -> {
       if (environment.getSource() instanceof ScheduledTransitLeg originalLeg) {
         var args = new GraphQLTypes.GraphQLLegNextLegsArgs(environment.getArguments());
@@ -307,7 +316,7 @@ public DataFetcher<Iterable<Leg>> nextLegs() {
             environment.getSource(),
             numberOfLegs,
             environment.<GraphQLRequestContext>getContext().transitService(),
-            false,
+            includeDepartBefore,
             AlternativeLegsFilter.NO_FILTER,
             limitToExactOriginStop,
             limitToExactDestinationStop

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

@@ -1,9 +1,11 @@
 //THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
 package org.opentripplanner.apis.gtfs.generated;
 
+import graphql.relay.Connection;
 import graphql.relay.Connection;
 import graphql.relay.DefaultEdge;
 import graphql.relay.Edge;
+import graphql.relay.Edge;
 import graphql.schema.DataFetcher;
 import graphql.schema.TypeResolver;
 import java.util.Currency;
@@ -24,8 +26,12 @@
 import org.opentripplanner.apis.gtfs.model.FeedPublisher;
 import org.opentripplanner.apis.gtfs.model.PlanPageInfo;
 import org.opentripplanner.apis.gtfs.model.RideHailingProvider;
+import org.opentripplanner.apis.gtfs.model.RouteTypeModel;
+import org.opentripplanner.apis.gtfs.model.StopOnRouteModel;
+import org.opentripplanner.apis.gtfs.model.StopOnTripModel;
 import org.opentripplanner.apis.gtfs.model.StopPosition;
 import org.opentripplanner.apis.gtfs.model.TripOccupancy;
+import org.opentripplanner.apis.gtfs.model.UnknownModel;
 import org.opentripplanner.ext.fares.model.FareRuleSet;
 import org.opentripplanner.ext.ridehailing.model.RideEstimate;
 import org.opentripplanner.model.StopTimesInPattern;
@@ -48,6 +54,8 @@
 import org.opentripplanner.routing.graphfinder.PatternAtStop;
 import org.opentripplanner.routing.graphfinder.PlaceAtDistance;
 import org.opentripplanner.routing.vehicle_parking.VehicleParking;
+import org.opentripplanner.routing.vehicle_parking.VehicleParking;
+import org.opentripplanner.routing.vehicle_parking.VehicleParking;
 import org.opentripplanner.routing.vehicle_parking.VehicleParkingSpaces;
 import org.opentripplanner.routing.vehicle_parking.VehicleParkingState;
 import org.opentripplanner.service.realtimevehicles.model.RealtimeVehicle;
@@ -58,6 +66,7 @@
 import org.opentripplanner.service.vehiclerental.model.VehicleRentalPlace;
 import org.opentripplanner.service.vehiclerental.model.VehicleRentalStation;
 import org.opentripplanner.service.vehiclerental.model.VehicleRentalStationUris;
+import org.opentripplanner.service.vehiclerental.model.VehicleRentalStationUris;
 import org.opentripplanner.service.vehiclerental.model.VehicleRentalSystem;
 import org.opentripplanner.service.vehiclerental.model.VehicleRentalVehicle;
 import org.opentripplanner.transit.model.basic.Money;
@@ -500,6 +509,8 @@ public interface GraphQLLeg {
 
     public DataFetcher<String> pickupType();
 
+    public DataFetcher<Iterable<Leg>> previousLegs();
+
     public DataFetcher<Boolean> realTime();
 
     public DataFetcher<String> realtimeState();

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

@@ -1,6 +1,7 @@
 // THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
 package org.opentripplanner.apis.gtfs.generated;
 
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
@@ -1268,6 +1269,69 @@ public void setGraphQLOriginModesWithParentStation(
     }
   }
 
+  public static class GraphQLLegPreviousLegsArgs {
+
+    private List<GraphQLTransitMode> destinationModesWithParentStation;
+    private Integer numberOfLegs;
+    private List<GraphQLTransitMode> originModesWithParentStation;
+
+    public GraphQLLegPreviousLegsArgs(Map<String, Object> args) {
+      if (args != null) {
+        if (args.get("destinationModesWithParentStation") != null) {
+          this.destinationModesWithParentStation =
+            ((List<Object>) args.get("destinationModesWithParentStation")).stream()
+              .map(item ->
+                item instanceof GraphQLTransitMode
+                  ? item
+                  : GraphQLTransitMode.valueOf((String) item)
+              )
+              .map(GraphQLTransitMode.class::cast)
+              .collect(Collectors.toList());
+        }
+        this.numberOfLegs = (Integer) args.get("numberOfLegs");
+        if (args.get("originModesWithParentStation") != null) {
+          this.originModesWithParentStation =
+            ((List<Object>) args.get("originModesWithParentStation")).stream()
+              .map(item ->
+                item instanceof GraphQLTransitMode
+                  ? item
+                  : GraphQLTransitMode.valueOf((String) item)
+              )
+              .map(GraphQLTransitMode.class::cast)
+              .collect(Collectors.toList());
+        }
+      }
+    }
+
+    public List<GraphQLTransitMode> getGraphQLDestinationModesWithParentStation() {
+      return this.destinationModesWithParentStation;
+    }
+
+    public Integer getGraphQLNumberOfLegs() {
+      return this.numberOfLegs;
+    }
+
+    public List<GraphQLTransitMode> getGraphQLOriginModesWithParentStation() {
+      return this.originModesWithParentStation;
+    }
+
+    public void setGraphQLDestinationModesWithParentStation(
+      List<GraphQLTransitMode> destinationModesWithParentStation
+    ) {
+      this.destinationModesWithParentStation = destinationModesWithParentStation;
+    }
+
+    public void setGraphQLNumberOfLegs(Integer numberOfLegs) {
+      this.numberOfLegs = numberOfLegs;
+    }
+
+    public void setGraphQLOriginModesWithParentStation(
+      List<GraphQLTransitMode> originModesWithParentStation
+    ) {
+      this.originModesWithParentStation = originModesWithParentStation;
+    }
+  }
+
   public static class GraphQLLocalDateRangeInput {
 
     private java.time.LocalDate end;

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

@@ -717,6 +717,24 @@ type Leg {
   pickupBookingInfo: BookingInfo
   "This is used to indicate if boarding this leg is possible only with special arrangements."
   pickupType: PickupDropoffType
+  "Previous legs with same origin and destination stops or stations"
+  previousLegs(
+    """
+    Transportation modes for which all stops in the parent station are used as possible destination stops
+    for the previous legs. For modes not listed, only the exact destination stop of the leg is considered.
+    """
+    destinationModesWithParentStation: [TransitMode!],
+    """
+    The number of alternative legs searched. If fewer than the requested number are found,
+    then only the found legs are returned.
+    """
+    numberOfLegs: Int!,
+    """
+    Transportation modes for which all stops in the parent station are used as possible origin stops
+    for the previous legs. For modes not listed, only the exact origin stop of the leg is considered.
+    """
+    originModesWithParentStation: [TransitMode!]
+  ): [Leg!]
   "Whether there is real-time data about this Leg"
   realTime: Boolean
   "State of real-time data"