// Copyright 2021 Proyectos y Sistemas de Mantenimiento SL (eProsima).

//

// 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.

#ifndef _RTPS_TRANSPORT_CHAININGSENDERRESOURCE_HPP_

#define _RTPS_TRANSPORT_CHAININGSENDERRESOURCE_HPP_

#include <fastdds/rtps/transport/ChainingTransport.hpp>

#include <fastdds/rtps/transport/SenderResource.hpp>

namespace eprosima {

namespace fastdds {

namespace rtps {

class ChainingSenderResource : public SenderResource

{

public:

    ChainingSenderResource(

            ChainingTransport& transport,

            std::unique_ptr<SenderResource>& low_sender_resource)

        : SenderResource(transport.kind())

        , low_sender_resource_(std::move(low_sender_resource))

    {

        // Implementation functions are bound to the right transport parameters

        clean_up = []()

                {

                    // No cleanup is required.

                    // low_sender_resources_ makes its clean up on destruction.

                };

        send_buffers_lambda_ = [this, &transport](

            const std::vector<NetworkBuffer>& buffers,

            uint32_t total_bytes,

            LocatorsIterator* destination_locators_begin,

            LocatorsIterator* destination_locators_end,

            const std::chrono::steady_clock::time_point& timeout) -> bool

                {

                    if (low_sender_resource_)

                    {

                        return transport.send(low_sender_resource_.get(), buffers, total_bytes,

                                       destination_locators_begin, destination_locators_end, timeout);

                    }

                    return false;

                };

    }

    SenderResource* lower_sender_cast()

    {

        SenderResource* lower_sender_cast = nullptr;

        if (low_sender_resource_)

        {

            lower_sender_cast = static_cast<SenderResource*>(low_sender_resource_.get());

        }

        return lower_sender_cast;

    }

    virtual ~ChainingSenderResource()

    {

        if (clean_up)

        {

            clean_up();

        }

    }

private:

    ChainingSenderResource() = delete;

    ChainingSenderResource(

            const SenderResource&) = delete;

    ChainingSenderResource& operator =(

            const SenderResource&) = delete;

    std::unique_ptr<SenderResource> low_sender_resource_;

};

} // namespace rtps

} // namespace fastdds

} // namespace eprosima

#endif // _RTPS_TRANSPORT_CHAININGSENDERRESOURCE_HPP_