// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package google.maps.routes.v1;

import "google/protobuf/wrappers.proto";
import "google/type/latlng.proto";

option cc_enable_arenas = true;
option csharp_namespace = "Google.Maps.Routes.V1";
option go_package = "google.golang.org/genproto/googleapis/maps/routes/v1;routes";
option java_multiple_files = true;
option java_outer_classname = "WaypointProto";
option java_package = "com.google.maps.routes.v1";
option objc_class_prefix = "GMRS";
option php_namespace = "Google\\Maps\\Routes\\V1";

// Encapsulates a waypoint. Waypoints mark both the beginning and end of a
// route, and include intermediate stops along the route.
message Waypoint {
  // Different ways to represent a location.
  oneof location_type {
    // A point specified using geographic coordinates, including an optional
    // heading.
    Location location = 1;

    // The POI Place ID associated with the waypoint.
    string place_id = 2;
  }

  // Marks this waypoint as a milestone, as opposed to a stopping point. For
  // each non-via waypoint in the request, the response appends an entry to the
  // `legs` array to provide the details for stopovers on that leg of the
  // trip. Set this value to true when you want the route to pass through this
  // waypoint without stopping over. Via waypoints don't cause an entry to be
  // added to the `legs` array, but they do route the journey through the
  // waypoint. You can only set this value on waypoints that are intermediates.
  // If you set this field on terminal waypoints, then the request fails.
  bool via = 3;

  // Indicates that the waypoint is meant for vehicles to stop at, where the
  // intention is to either pickup or drop-off. When you set this value, the
  // calculated route won't include non-`via` waypoints on roads that are
  // unsuitable for pickup and drop-off. This option works only for `DRIVE` and
  // `TWO_WHEELER` travel modes, and when the `location_type` is `location`.
  bool vehicle_stopover = 4;

  // Indicates that the location of this waypoint is meant to have a preference
  // for the vehicle to stop at a particular side of road. When you set this
  // value, the route will pass through the location so that the vehicle can
  // stop at the side of road that the location is biased towards from the
  // center of the road. This option works only for 'DRIVE' and 'TWO_WHEELER'
  // travel modes, and when the 'location_type' is set to 'location'.
  bool side_of_road = 5;
}

// Encapsulates a location (a geographic point, and an optional heading).
message Location {
  // The waypoint's geographic coordinates.
  google.type.LatLng lat_lng = 1;

  // The compass heading associated with the direction of the flow of traffic.
  // This value is used to specify the side of the road to use for pickup and
  // drop-off. Heading values can be from 0 to 360, where 0 specifies a heading
  // of due North, 90 specifies a heading of due East, etc. You can use this
  // field only for `DRIVE` and `TWO_WHEELER` travel modes.
  google.protobuf.Int32Value heading = 2;
}