/*
 * Copyright (C) 2019 The Android Open Source Project
 *
 * 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 vhal_proto;

import "google/protobuf/empty.proto";
import "VehicleHalProto.proto";

// correspond to StatusCode defined in types.hal
enum VehicleHalStatusCode {
    OK                                  = 0;
    TRY_AGAIN                           = 1;
    INVALID_ARG                         = 2;
    NOT_AVAILABLE                       = 3;
    ACCESS_DENIED                       = 4;
    INTERNAL_ERROR                      = 5;
}

message VehicleHalCallStatus {
    VehicleHalStatusCode status_code    = 1;
}

message WrappedVehiclePropValue {
    VehiclePropValue value              = 1;
    // An indicator on whether we should update the status of the property
    //   - true: if the value is generated by (emulated/real) car, or;
    //           if the value is injected to 'fake' a on car event (for debugging purpose)
    //   - false: if the value is set by VHal (public interface), since Android
    //            cannot change status of property on a real car
    bool update_status                  = 2;
}

service VehicleServer {
    rpc GetAllPropertyConfig(google.protobuf.Empty) returns (stream VehiclePropConfig) {}

    // Change the property value of the vehicle
    rpc SetProperty(WrappedVehiclePropValue) returns (VehicleHalCallStatus) {}

    // Sending all current values to the streams
    rpc SendAllPropertyValuesToStream(google.protobuf.Empty) returns (google.protobuf.Empty) {}

    // Start a vehicle property value stream
    rpc StartPropertyValuesStream(google.protobuf.Empty) returns (stream WrappedVehiclePropValue) {}
}