/*
  Copyright 2017 SINTEF Digital, Mathematics and Cybernetics.
  Copyright 2017 Statoil ASA.
  Copyright 2017 IRIS
  Copyright 2019 Norce

  This file is part of the Open Porous Media project (OPM).

  OPM is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  OPM is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef OPM_WELLINTERFACE_INDICES_HEADER_INCLUDED
#define OPM_WELLINTERFACE_INDICES_HEADER_INCLUDED

#include <opm/material/densead/Evaluation.hpp>

#include <opm/simulators/wells/WellInterfaceFluidSystem.hpp>

namespace Opm {

template<class FluidSystem, class Indices>
class WellInterfaceIndices : public WellInterfaceFluidSystem<FluidSystem>
{
public:
    using WellInterfaceFluidSystem<FluidSystem>::Gas;
    using WellInterfaceFluidSystem<FluidSystem>::Oil;
    using WellInterfaceFluidSystem<FluidSystem>::Water;
    using Scalar = typename FluidSystem::Scalar;
    using Eval = DenseAd::Evaluation<Scalar, /*size=*/Indices::numEq>;
    using ModelParameters = typename WellInterfaceFluidSystem<FluidSystem>::ModelParameters;

    int flowPhaseToModelCompIdx(const int phaseIdx) const;
    int modelCompIdxToFlowCompIdx(const int compIdx) const;
    int flowPhaseToModelPhaseIdx(const int phaseIdx) const;
    Scalar scalingFactor(const int phaseIdx) const;

    template <class EvalWell>
    Eval restrictEval(const EvalWell& in) const
    {
        Eval out = 0.0;
        out.setValue(in.value());
        for (int eqIdx = 0; eqIdx < Indices::numEq; ++eqIdx) {
            out.setDerivative(eqIdx, in.derivative(eqIdx));
        }
        return out;
    }

protected:
    WellInterfaceIndices(const Well& well,
                         const ParallelWellInfo<Scalar>& parallel_well_info,
                         const int time_step,
                         const ModelParameters& param,
                         const typename WellInterfaceFluidSystem<FluidSystem>::RateConverterType& rate_converter,
                         const int pvtRegionIdx,
                         const int num_components,
                         const int num_phases,
                         const int index_of_well,
                         const std::vector<PerforationData<Scalar>>& perf_data);
};

}

#endif // OPM_WELLINTERFACE_INDICES_HEADER_INCLUDED
