/*
 * Copyright (C) 2015 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 = "proto2";

package vhal_proto;

// CMD messages are from workstation --> VHAL
// RESP messages are from VHAL --> workstation
enum MsgType {
    GET_CONFIG_CMD = 0;
    GET_CONFIG_RESP = 1;
    GET_CONFIG_ALL_CMD = 2;
    GET_CONFIG_ALL_RESP = 3;
    GET_PROPERTY_CMD = 4;
    GET_PROPERTY_RESP = 5;
    GET_PROPERTY_ALL_CMD = 6;
    GET_PROPERTY_ALL_RESP = 7;
    SET_PROPERTY_CMD = 8;
    SET_PROPERTY_RESP = 9;
    SET_PROPERTY_ASYNC = 10;
    DEBUG_CMD = 11;
    DEBUG_RESP = 12;
}
enum Status {
    RESULT_OK = 0;
    ERROR_UNKNOWN = 1;
    ERROR_UNIMPLEMENTED_CMD = 2;
    ERROR_INVALID_PROPERTY = 3;
    ERROR_INVALID_AREA_ID = 4;
    ERROR_PROPERTY_UNINITIALIZED = 5;
    ERROR_WRITE_ONLY_PROPERTY = 6;
    ERROR_MEMORY_ALLOC_FAILED = 7;
    ERROR_INVALID_OPERATION = 8;
}

enum VehiclePropStatus {
    AVAILABLE = 0;
    UNAVAILABLE = 1;
    ERROR = 2;
}

message VehicleAreaConfig {
    required int32 area_id = 1;
    optional sint32 min_int32_value = 2;
    optional sint32 max_int32_value = 3;
    optional sint64 min_int64_value = 4;
    optional sint64 max_int64_value = 5;
    optional float min_float_value = 6;
    optional float max_float_value = 7;
}

message VehiclePropConfig {
    required int32 prop = 1;
    optional int32 access = 2;
    optional int32 change_mode = 3;
    optional int32 value_type = 4;
    optional int32 supported_areas = 5;  // Deprecated - DO NOT USE
    repeated VehicleAreaConfig area_configs = 6;
    optional int32 config_flags = 7;
    repeated int32 config_array = 8;
    optional string config_string = 9;
    optional float min_sample_rate = 10;
    optional float max_sample_rate = 11;
};

message VehiclePropValue {
    // common data
    required int32 prop = 1;
    optional int32 value_type = 2;
    optional int64 timestamp = 3;            // required for valid data from HAL, skipped for set
    optional VehiclePropStatus status = 10;  // required for valid data from HAL, skipped for set

    // values
    optional int32 area_id = 4;
    repeated sint32 int32_values = 5;  // this also covers boolean value.
    repeated sint64 int64_values = 6;
    repeated float float_values = 7;
    optional string string_value = 8;
    optional bytes bytes_value = 9;
};

// This structure is used to notify what values to get from the Vehicle HAL
message VehiclePropGet {
    required int32 prop = 1;
    optional int32 area_id = 2;
};

message EmulatorMessage {
    required MsgType msg_type = 1;
    optional Status status = 2;        // Only for RESP messages
    repeated VehiclePropGet prop = 3;  // Provided for getConfig, getProperty commands
    repeated VehiclePropConfig config = 4;
    repeated VehiclePropValue value = 5;
    repeated string debug_commands = 6;  // Required for debug command
    optional string debug_result = 7;    // Required for debug RESP messages
};