/*
 * Copyright (c) 2019-2024, NVIDIA CORPORATION.  All rights reserved.
 * Copyright (c) 2021, NAVER Corp.  Authored by CLOVA.
 *
 * 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.
 */

#include "tensorrt_llm/layers/explicitDraftTokensLayer.h"
#include "tensorrt_llm/common/cudaUtils.h"
#include "tensorrt_llm/common/memoryUtils.h"
#include "tensorrt_llm/kernels/decodingCommon.h"
#include "tensorrt_llm/kernels/decodingKernels.h"
#include "tensorrt_llm/kernels/samplingTopKKernels.h"
#include "tensorrt_llm/layers/defaultDecodingParams.h"
#include "tensorrt_llm/runtime/bufferManager.h"
#include "tensorrt_llm/runtime/iBuffer.h"

#include <algorithm>

using namespace tensorrt_llm::common;
using namespace tensorrt_llm::kernels;
using namespace tensorrt_llm::runtime;

namespace tensorrt_llm
{
namespace layers
{

template <typename T>
ExplicitDraftTokensLayer<T>::ExplicitDraftTokensLayer(
    DecoderDomain const& decoderDomain, cudaStream_t stream, std::shared_ptr<IAllocator> allocator)
    : BaseLayer(decoderDomain, stream, std::move(allocator))
{
    TLLM_LOG_TRACE("%s start", __PRETTY_FUNCTION__);

    allocateBuffer();

    TLLM_LOG_TRACE("%s stop", __PRETTY_FUNCTION__);
}

template <typename T>
ExplicitDraftTokensLayer<T>::~ExplicitDraftTokensLayer()
{
    TLLM_LOG_TRACE("%s start", __PRETTY_FUNCTION__);

    freeBuffer();

    TLLM_LOG_TRACE("%s stop", __PRETTY_FUNCTION__);
}

template <typename T>
void ExplicitDraftTokensLayer<T>::allocateBuffer()
{
    TLLM_LOG_TRACE("%s start", __PRETTY_FUNCTION__);

    TLLM_LOG_TRACE("%s stop", __PRETTY_FUNCTION__);
}

template <typename T>
void ExplicitDraftTokensLayer<T>::freeBuffer()
{
    TLLM_LOG_TRACE("%s start", __PRETTY_FUNCTION__);

    TLLM_LOG_TRACE("%s stop", __PRETTY_FUNCTION__);
}

template <typename T>
void ExplicitDraftTokensLayer<T>::setup(SizeType32 batchSize, SizeType32 beamWidth, SizeType32 const* batchSlots,
    std::shared_ptr<BaseSetupParams> baseSetupParams)
{
    TLLM_LOG_TRACE("%s start", __PRETTY_FUNCTION__);

    TLLM_CHECK_WITH_INFO(false, "ExplicitDraftTokensLayer::setup is not implemented yet.");

    TLLM_LOG_TRACE("%s stop", __PRETTY_FUNCTION__);
}

template <typename T>
void ExplicitDraftTokensLayer<T>::forwardAsync(
    std::shared_ptr<BaseOutputParams> baseOutputs, std::shared_ptr<BaseInputParams> baseInputs)
{
    TLLM_LOG_TRACE("%s start", __PRETTY_FUNCTION__);

    TLLM_CHECK_WITH_INFO(false, "ExplicitDraftTokensLayer::forwardAsync is not implemented yet.");

    TLLM_LOG_TRACE("%s stop", __PRETTY_FUNCTION__);
}

template class ExplicitDraftTokensLayer<float>;
template class ExplicitDraftTokensLayer<half>;

} // namespace layers
} // namespace tensorrt_llm