/********************************************************************************
 * Copyright (c) 2023 CEA-List
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 ********************************************************************************/

#ifndef __AIDGE_CPU_OPERATOR_ScalingIMPL_H__
#define __AIDGE_CPU_OPERATOR_ScalingIMPL_H__

#include "aidge/backend/OperatorImpl.hpp"
#include "aidge/operator/Scaling.hpp"
#include "aidge/utils/Registrar.hpp"
#include "aidge/utils/Types.h"
#include <memory>
#include <vector>

namespace Aidge {
// class Scaling_Op;

// compute kernel registry for forward and backward
class ScalingImplForward_cpu
    : public Registrable<ScalingImplForward_cpu, std::tuple<DataType, DataType>, void(const Scaling_Op::Attributes&, std::size_t, const void*, void*)> {
};
class ScalingImplBackward_cpu
    : public Registrable<ScalingImplBackward_cpu, std::tuple<DataType, DataType>, void(const Scaling_Op::Attributes&, std::size_t, const void*, void*)> {
};

class ScalingImpl_cpu : public OperatorImpl {
   private:
    const Scaling_Op& mOp;
    std::array<NbElts_t, 1> mNbConsumedData;
    std::array<NbElts_t, 1> mNbProducedData;

   public:
    ScalingImpl_cpu(const Scaling_Op& op) : mOp(op), mNbConsumedData({0}), mNbProducedData({0}) {}

    static std::unique_ptr<ScalingImpl_cpu> create(const Scaling_Op& op) {
        //std::cout << "ScalingImpl_cpu create" << std::endl;
        return std::make_unique<ScalingImpl_cpu>(op);
    }

   public:
    NbElts_t getNbRequiredData(const IOIndex_t inputIdx) const override final;
    NbElts_t getNbRequiredProtected(const IOIndex_t inputIdx) const override final;
    NbElts_t getRequiredMemory(const IOIndex_t outputIdx, const std::vector<DimSize_t>& inputsSize) const override final;
    NbElts_t getNbConsumedData(const IOIndex_t inputIdx) const override final;
    NbElts_t getNbProducedData(const IOIndex_t outputIdx) const override final;

    void updateConsummerProducer() override final;

    void forward();

    void backward();
};

namespace {
static Registrar<Scaling_Op> registrarScalingImpl_cpu("cpu", Aidge::ScalingImpl_cpu::create);
}
}  // namespace Aidge

#endif /* __AIDGE_CPU_OPERATOR_ScalingIMPL_H__ */