// 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 maps.fleetengine.v1;

import "google/api/annotations.proto";
import "google/api/field_behavior.proto";
import "google/api/resource.proto";
import "google/maps/fleetengine/v1/fleetengine.proto";
import "google/maps/fleetengine/v1/header.proto";
import "google/maps/fleetengine/v1/trips.proto";
import "google/protobuf/duration.proto";
import "google/protobuf/empty.proto";
import "google/protobuf/field_mask.proto";
import "google/protobuf/timestamp.proto";
import "google/api/client.proto";

option go_package = "google.golang.org/genproto/googleapis/maps/fleetengine/v1;fleetengine";
option java_multiple_files = true;
option java_outer_classname = "TripApi";
option java_package = "google.maps.fleetengine.v1";
option objc_class_prefix = "CFE";

// Trip management service.
service TripService {
  option (google.api.default_host) = "fleetengine.googleapis.com";

  // Creates a trip in the Fleet Engine and returns the new trip.
  rpc CreateTrip(CreateTripRequest) returns (Trip) {
    option (google.api.http) = {
      post: "/v1/{parent=providers/*}/trips"
      body: "trip"
    };
  }

  // Get information about a single trip.
  rpc GetTrip(GetTripRequest) returns (Trip) {
    option (google.api.http) = {
      get: "/v1/{name=providers/*/trips/*}"
    };
  }

  // Report billable trip usage.
  rpc ReportBillableTrip(ReportBillableTripRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      post: "/v1/{name=providers/*/billableTrips/*}:report"
      body: "*"
    };
  }

  // Get all the trips for a specific vehicle.
  rpc SearchTrips(SearchTripsRequest) returns (SearchTripsResponse) {
    option (google.api.http) = {
      post: "/v1/{parent=providers/*}/trips:search"
      body: "*"
    };
  }

  // Updates trip data.
  rpc UpdateTrip(UpdateTripRequest) returns (Trip) {
    option (google.api.http) = {
      put: "/v1/{name=providers/*/trips/*}"
      body: "trip"
    };
  }
}

// CreateTrip request message.
message CreateTripRequest {
  // The standard Fleet Engine request header.
  RequestHeader header = 1;

  // Required. Must be in the format "providers/{provider}".
  // The provider must be the Project ID (for example, sample-cloud-project)
  // of the Google Cloud Project of which the service account making
  // this call is a member.
  string parent = 3 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "fleetengine.googleapis.com/Trip"
    }
  ];

  // Required. Unique Trip ID; must be unique per provider.  The actual
  // format and value is opaque to the Fleet Engine and is determined
  // by the provider.
  string trip_id = 5 [(google.api.field_behavior) = REQUIRED];

  // Required. Trip entity to create.
  //
  // When creating a Trip, the following fields are required:
  //
  // * trip_type
  // * pickup_point
  //
  // The following fields are used if you provide them:
  //
  // * number_of_passengers
  // * vehicle_id
  // * dropoff_point
  // * intermediate_destinations
  //
  // Only EXCLUSIVE trips support multiple destinations.
  //
  // When vehicle_id is set for a shared trip, you must supply
  // the list of `Trip.vehicle_waypoints` to specify the order of the remaining
  // waypoints for the vehicle, otherwise the waypoint order will be
  // undetermined.
  //
  // When you specify `Trip.vehicle_waypoints`, the list must contain all
  // the remaining waypoints of the vehicle's trips, with no extra waypoints.
  // You must order these waypoints such that for a given trip, the pickup
  // point is before intermediate destinations, and all intermediate
  // destinations come before the drop-off point. An `EXCLUSIVE` trip's
  // waypoints must not interleave with any other trips.
  //
  // The `trip_id`, `waypoint_type` and `location` fields are used, and all
  // other TripWaypoint fields in vehicle_waypoints are ignored.
  //
  // All other Trip fields are ignored.
  Trip trip = 4 [(google.api.field_behavior) = REQUIRED];
}

// GetTrip request message.
message GetTripRequest {
  // The standard Fleet Engine request header.
  RequestHeader header = 1;

  // Required. Must be in the format "providers/{provider}/trips/{trip}".
  // The provider must be the Project ID (for example, sample-cloud-project)
  // of the Google Cloud Project of which the service account making
  // this call is a member.
  string name = 3 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "fleetengine.googleapis.com/Trip"
    }
  ];

  // The subset of Trip fields that should be returned and their interpretation.
  TripView view = 11;

  // Indicates the minimum timestamp (exclusive) for which Trip.route or
  // Trip.current_route_segment data is retrieved. If route data is unchanged
  // since this timestamp, the route field is not set in the response. If a
  // minimum is unspecified, the route data is always retrieved.
  google.protobuf.Timestamp current_route_segment_version = 6;

  // Indicates the minimum timestamp (exclusive) for which
  // Trip.remaining_waypoints are retrieved. If they are unchanged since this
  // timestamp, the remaining_waypoints are not set in the response. If this
  // field is unspecified, remaining_waypoints is always retrieved.
  google.protobuf.Timestamp remaining_waypoints_version = 7;

  // The returned current route format, LAT_LNG_LIST_TYPE (in Trip.route), or
  // ENCODED_POLYLINE_TYPE (in Trip.current_route_segment).
  // The default is LAT_LNG_LIST_TYPE.
  PolylineFormatType route_format_type = 8;
}

// ReportBillableTrip request message.
message ReportBillableTripRequest {
  // Selector for different solution types of a reported trip.
  enum SolutionType {
    // The default value. For backwards-compatibility, the API will use
    // ON_DEMAND_RIDESHARING_AND_DELIVERIES by default which is the first
    // supported solution type.
    SOLUTION_TYPE_UNSPECIFIED = 0;

    // The solution is an on-demand ridesharing and deliveries trip.
    ON_DEMAND_RIDESHARING_AND_DELIVERIES = 1;
  }

  // Required. Must be in the format
  // "providers/{provider}/billableTrips/{billable_trip}". The
  // provider must be the Project ID (for example, sample-cloud-project) of the
  // Google Cloud Project of which the service account making this call is a
  // member.
  string name = 2 [(google.api.field_behavior) = REQUIRED];

  // Required. Two letter country code of the country where the trip takes place. Price is
  // defined according to country code.
  string country_code = 3 [(google.api.field_behavior) = REQUIRED];

  // The platform upon which the request was issued.
  BillingPlatformIdentifier platform = 5;

  // The identifiers that are directly related to the trip being reported. These
  // are usually IDs (for example, session IDs) of pre-booking operations done
  // before the trip ID is available. The number of related_ids is
  // limited to 50.
  repeated string related_ids = 6;

  // The type of GMP product solution (for example,
  // ON_DEMAND_RIDESHARING_AND_DELIVERIES) used for the reported trip.
  SolutionType solution_type = 7;
}

// UpdateTrip request message.
message UpdateTripRequest {
  // The standard Fleet Engine request header.
  RequestHeader header = 1;

  // Required. Must be in the format
  // `providers/{provider}/trips/{trip}`. The provider must
  // be the Project ID (for example, sample-consumer-project) of the Google
  // Cloud Project of which the service account making this call is a member.
  string name = 3 [(google.api.field_behavior) = REQUIRED];

  // Required. The Trip associated with the update.
  //
  // The following fields are maintained by the Fleet Engine. Do not update
  // them using Trip.update.
  //
  // * current_route_segment
  // * current_route_segment_version
  // * eta_to_next_waypoint
  // * intermediate_destinations_version
  // * last_location
  // * name
  // * number_of_passengers
  // * remaining_distance_meters
  // * remaining_time_to_first_waypoint
  // * remaining_waypoints
  // * remaining_waypoints_version
  //
  // When you update the `Trip.vehicle_id` for a shared trip, you must supply
  // the list of `Trip.vehicle_waypoints` to specify the order of the remaining
  // waypoints, otherwise the order will be undetermined.
  //
  // When you specify `Trip.vehicle_waypoints`, the list must contain all
  // the remaining waypoints of the vehicle's trips, with no extra waypoints.
  // You must order these waypoints such that for a given trip, the pickup
  // point is before intermediate destinations, and all intermediate
  // destinations come before the drop-off point. An `EXCLUSIVE` trip's
  // waypoints must not interleave with any other trips.
  // The `trip_id`, `waypoint_type` and `location` fields are used, and all
  // other TripWaypoint fields in vehicle_waypoints are ignored.
  //
  // To avoid a race condition for trips with multiple destinations, you
  // should provide `Trip.intermediate_destinations_version` when updating
  // the trip status to `ENROUTE_TO_INTERMEDIATE_DESTINATION`. The
  // `Trip.intermediate_destinations_version` passed must be consistent with
  // Fleet Engine's version. If it isn't, the request fails.
  Trip trip = 4 [(google.api.field_behavior) = REQUIRED];

  // Required. The field mask indicating which fields in Trip to update.
  // The update_mask must contain at least one field.
  google.protobuf.FieldMask update_mask = 5 [(google.api.field_behavior) = REQUIRED];
}

// SearchTrips request message.
message SearchTripsRequest {
  // The standard Fleet Engine request header.
  RequestHeader header = 1;

  // Required. Must be in the format "providers/*"
  // The provider must be the Project ID (for example, sample-cloud-project)
  // of the Google Cloud Project of which the service account making
  // this call is a member.
  string parent = 3 [(google.api.field_behavior) = REQUIRED];

  // The vehicle associated with the trips in the request. If unspecified, the
  // returned trips do not contain:
  //
  // * current_route_segment
  // * remaining_waypoints
  // * remaining_distance_meters
  // * eta_to_first_waypoint
  string vehicle_id = 4;

  // If set to true, only Trips that influence the drivers route
  // are included in the response.
  bool active_trips_only = 5;

  // If not set, the server will decide the number of
  // results to return.
  int32 page_size = 6;

  // Set this to a value previously returned in the
  // SearchTripsResponse to continue from previous results.
  string page_token = 7;

  // If specified, returns the trips that have not been updated after
  // the time (current - minimum_staleness).
  google.protobuf.Duration minimum_staleness = 8;
}

// SearchTrips response message.
message SearchTripsResponse {
  // The list of trips for the requested vehicle.
  repeated Trip trips = 1;

  // Pass this token in the SearchTripsRequest to continue to
  // list results. If all results have been returned, this field is an empty
  // string or not present in the response.
  string next_page_token = 2;
}