package openxc;

option java_package = "com.openxc";
option java_outer_classname = "BinaryMessages";

message VehicleMessage {
    enum Type { RAW = 1; TRANSLATED = 2; DIAGNOSTIC = 3; CONTROL_COMMAND = 4;
            COMMAND_RESPONSE = 5; }

    optional Type type = 1;
    optional RawMessage raw_message = 2;
    optional TranslatedMessage translated_message = 3;
    optional DiagnosticResponse diagnostic_response = 4;
    optional ControlCommand control_command = 5;
    optional CommandResponse command_response = 6;
}

message RawMessage {
    optional int32 bus = 1;
    optional uint32 message_id = 2;
    optional bytes data = 3;
}

message ControlCommand {
    enum Type { VERSION = 1; DEVICE_ID = 2; DIAGNOSTIC = 3; }

    optional Type type = 1;
    optional DiagnosticRequest diagnostic_request = 2;
}

message CommandResponse {
    optional ControlCommand.Type type = 1;
    optional string message = 2;
}

message DiagnosticRequest {
    enum DecodedType { NONE = 1; OBD2 = 2; }
    enum Action { ADD = 1; CANCEL = 3; }

    optional int32 bus = 1;
    optional uint32 message_id = 2;
    optional uint32 mode = 3;
    optional uint32 pid = 4;
    // TODO we are capping this at 8 bytes for now - need to change when we
    // support multi-frame responses
    optional bytes payload = 5;
    optional bool multiple_responses = 6;
    optional double frequency = 7;
    optional string name = 8;
    optional DecodedType decoded_type = 9;
    optional Action action = 10;
}

message DiagnosticResponse {
    optional int32 bus = 1;
    optional uint32 message_id = 2;
    optional uint32 mode = 3;
    optional uint32 pid = 4;
    optional bool success = 5;
    optional uint32 negative_response_code = 6;
    // TODO we are capping this at 8 bytes for now - need to change when we
    // support multi-frame responses
    optional bytes payload = 7;
    optional double value = 8;
}

message DynamicField {
    enum Type { STRING = 1; NUM = 2; BOOL = 3; }

    optional Type type = 1;
    optional string string_value = 2;
    optional double numeric_value = 3;
    optional bool boolean_value = 4;
}

message TranslatedMessage {
    enum Type { STRING = 1; NUM = 2; BOOL = 3;
        EVENTED_STRING = 4; EVENTED_NUM = 5; EVENTED_BOOL = 6;}

    optional Type type = 1;
    optional string name = 2;
    optional DynamicField value = 3;
    optional DynamicField event = 4;
}

// TODO we should also consider having an enum type, having each specific
// message defined as a protobuf