/*

 * Copyright 2013-2022 Step Function I/O, LLC

 *

 * Licensed to Green Energy Corp (www.greenenergycorp.com) and Step Function I/O

 * LLC (https://stepfunc.io) under one or more contributor license agreements.

 * See the NOTICE file distributed with this work for additional information

 * regarding copyright ownership. Green Energy Corp and Step Function I/O LLC license

 * this file to you 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.

 */

#include <opendnp3/logging/LogLevels.h>

#include <exe4cpp/MockExecutor.h>

#include <dnp3mocks/MockCommandHandler.h>

#include <dnp3mocks/MockLowerLayer.h>

#include <dnp3mocks/MockOutstationApplication.h>

#include <outstation/Database.h>

#include <outstation/OutstationContext.h>

#include "NullLogHandler.h"

#include <functional>

class OutstationTestObject

{

public:

    OutstationTestObject(const opendnp3::OutstationConfig& config,

                         const opendnp3::DatabaseConfig& database = opendnp3::DatabaseConfig(10))

        : logger(),

          exe(std::make_shared<exe4cpp::MockExecutor>()),

          lower(std::make_shared<MockLowerLayer>()),

          cmdHandler(std::make_shared<MockCommandHandler>(opendnp3::CommandStatus::SUCCESS)),

          application(std::make_shared<MockOutstationApplication>()),

          context(opendnp3::Addresses(), config, database, logger.get_logger(), exe, lower, cmdHandler, application)

    {

        lower->SetUpperLayer(context);

    }

    size_t SendToOutstation(const ser4cpp::rseq_t& buffer)

    {

        context.OnReceive(opendnp3::Message(opendnp3::Addresses(), buffer));

        return exe->run_many();

    }

    size_t LowerLayerUp()

    {

        context.OnLowerLayerUp();

        return exe->run_many();

    }

private:

    const NullLogger logger;

    const std::shared_ptr<exe4cpp::MockExecutor> exe;

    const std::shared_ptr<MockLowerLayer> lower;

    const std::shared_ptr<MockCommandHandler> cmdHandler;

    const std::shared_ptr<MockOutstationApplication> application;

    opendnp3::OContext context;

};

extern "C" int LLVMFuzzerTestOneInput(const uint8_t* Data, size_t Size)

{

    ser4cpp::rseq_t buffer(Data, Size);

    opendnp3::OutstationConfig config;

    OutstationTestObject t(config);

    t.LowerLayerUp();

    t.SendToOutstation(buffer);

    return 0;

}