// Copyright 2016 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 __TRANSPORT_TCPSENDERRESOURCE_HPP__

#define __TRANSPORT_TCPSENDERRESOURCE_HPP__

#include <fastdds/rtps/common/LocatorsIterator.hpp>

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

#include <rtps/transport/ChainingSenderResource.hpp>

#include <rtps/transport/TCPChannelResource.h>

#include <rtps/transport/TCPTransportInterface.h>

namespace eprosima {

namespace fastdds {

namespace rtps {

class TCPSenderResource : public SenderResource

{

public:

    TCPSenderResource(

            TCPTransportInterface& transport,

            Locator_t& locator,

            const std::shared_ptr<TCPChannelResource>& channel = {})

        : SenderResource(transport.kind())

        , locator_(locator)

        , channel_(channel)

    {

        // Implementation functions are bound to the right transport parameters

        clean_up = [this, &transport]()

                {

                    transport.SenderResourceHasBeenClosed(locator_);

                };

        send_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&,

            int32_t transport_priority) -> bool

                {

                    return transport.send(buffers, total_bytes, locator_, destination_locators_begin,

                                   destination_locators_end, transport_priority);

                };

    }

    virtual ~TCPSenderResource()

    {

        if (clean_up)

        {

            clean_up();

        }

    }

    Locator_t& locator()

    {

        return locator_;

    }

    const std::weak_ptr<TCPChannelResource>& channel() const

    {

        return channel_;

    }

    static TCPSenderResource* cast(

            const TransportInterface& transport,

            SenderResource* sender_resource)

    {

        TCPSenderResource* returned_resource = nullptr;

        if (sender_resource->kind() == transport.kind())

        {

            returned_resource = dynamic_cast<TCPSenderResource*>(sender_resource);

            //! May be chained

            if (!returned_resource)

            {

                auto chaining_sender = dynamic_cast<ChainingSenderResource*>(sender_resource);

                if (chaining_sender)

                {

                    returned_resource = dynamic_cast<TCPSenderResource*>(chaining_sender->lower_sender_cast());

                }

            }

        }

        return returned_resource;

    }

private:

    TCPSenderResource() = delete;

    TCPSenderResource(

            const SenderResource&) = delete;

    TCPSenderResource& operator =(

            const SenderResource&) = delete;

    Locator_t locator_;

    // Identity of the TCP channel at creation time, used to detect a reconnected channel sharing the same locator.

    std::weak_ptr<TCPChannelResource> channel_;

};

} // namespace rtps

} // namespace fastdds

} // namespace eprosima

#endif // __TRANSPORT_UDPSENDERRESOURCE_HPP__