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 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the copyright holder nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 */

#include <openthread/platform/trel.h>

#include "nexus_core.hpp"
#include "nexus_node.hpp"

#if OPENTHREAD_CONFIG_RADIO_LINK_TREL_ENABLE

namespace ot {
namespace Nexus {

//---------------------------------------------------------------------------------------------------------------------
// otPlatTrel APIs

extern "C" {

void otPlatTrelEnable(otInstance *aInstance, uint16_t *aUdpPort) { AsNode(aInstance).mTrel.Enable(*aUdpPort); }

void otPlatTrelDisable(otInstance *aInstance) { AsNode(aInstance).mTrel.Disable(); }

void otPlatTrelSend(otInstance       *aInstance,
                    const uint8_t    *aUdpPayload,
                    uint16_t          aUdpPayloadLen,
                    const otSockAddr *aDestSockAddr)
{
    AsNode(aInstance).mTrel.Send(aUdpPayload, aUdpPayloadLen, AsCoreType(aDestSockAddr));
}

void otPlatTrelNotifyPeerSocketAddressDifference(otInstance       *aInstance,
                                                 const otSockAddr *aPeerSockAddr,
                                                 const otSockAddr *aRxSockAddr)
{
    OT_UNUSED_VARIABLE(aInstance);
    OT_UNUSED_VARIABLE(aPeerSockAddr);
    OT_UNUSED_VARIABLE(aRxSockAddr);
}

const otPlatTrelCounters *otPlatTrelGetCounters(otInstance *aInstance) { return &AsNode(aInstance).mTrel.mCounters; }

void otPlatTrelResetCounters(otInstance *aInstance) { AsNode(aInstance).mTrel.ResetCounters(); }

} // extern "C"

//---------------------------------------------------------------------------------------------------------------------
// Trel

uint16_t Trel::sLastUsedUdpPort = kUdpPortStart;

Trel::Trel(void)
    : mNode(nullptr)
    , mEnabled(false)
    , mUdpPort(sLastUsedUdpPort++)
{
    ClearAllBytes(mCounters);
}

void Trel::Init(Node &aNode) { mNode = &aNode; }

void Trel::Reset(void)
{
    mEnabled = false;
    ClearAllBytes(mCounters);
}

void Trel::Enable(uint16_t &aUdpPort)
{
    mEnabled = true;
    aUdpPort = mUdpPort;
}

void Trel::Disable(void) { mEnabled = false; }

void Trel::Send(const uint8_t *aUdpPayload, uint16_t aUdpPayloadLen, const Ip6::SockAddr &aDestSockAddr)
{
    Message *message;

    VerifyOrQuit(mNode != nullptr);

    message = mNode->Get<MessagePool>().Allocate(Message::kTypeIp6);
    VerifyOrQuit(message != nullptr);
    SuccessOrQuit(message->AppendBytes(aUdpPayload, aUdpPayloadLen));

    mNode->mInfraIf.SendUdp(mNode->mInfraIf.GetLinkLocalAddress(), aDestSockAddr.GetAddress(), mUdpPort,
                            aDestSockAddr.GetPort(), *message);

    mCounters.mTxPackets++;
    mCounters.mTxBytes += aUdpPayloadLen;
}

void Trel::Receive(Instance &aInstance, Heap::Data &aPayloadData, const Ip6::SockAddr &aSenderAddr)
{
    mCounters.mRxPackets++;
    mCounters.mRxBytes += aPayloadData.GetLength();

    otPlatTrelHandleReceived(&aInstance, AsNonConst(aPayloadData.GetBytes()), aPayloadData.GetLength(), &aSenderAddr);
}

} // namespace Nexus
} // namespace ot

#endif // OPENTHREAD_CONFIG_RADIO_LINK_TREL_ENABLE
