/*
  Copyright 2010, 2011, 2012 SINTEF ICT, Applied Mathematics.

  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/>.
*/

#include "config.h"
#include <opm/core/props/pvt/PvtInterface.hpp>

#include <cassert>

namespace Opm
{

    PvtInterface::PvtInterface()
        : num_phases_(MaxNumPhases)
    {
        for (int i = 0; i < MaxNumPhases; ++i) {
            phase_pos_[i] = i;
        }
    }

    PvtInterface::~PvtInterface()
    {
    }

    void PvtInterface::setPhaseConfiguration(const int num_phases, const int* phase_pos)
    {
        num_phases_ = num_phases;
        for (int i = 0; i < MaxNumPhases; ++i) {
            phase_pos_[i] = phase_pos[i];
        }
    }

    void extractPvtTableIndex(std::vector<int> &pvtTableIdx,
                              Opm::DeckConstPtr deck,
                              size_t numCompressed,
                              const int *compressedToCartesianCellIdx)
    {
        if (deck->hasKeyword("PVTNUM")) {
            // we have a "real" multi-pvt deck.

            // get the PVT number from the deck
            Opm::DeckKeywordConstPtr pvtnumKeyword = deck->getKeyword("PVTNUM");
            const std::vector<int> &pvtnumData = pvtnumKeyword->getIntData();

            // convert this into an array of compressed cells. since
            // Eclipse uses Fortran-style indices which start at 1
            // instead of 0, we subtract 1.
            pvtTableIdx.resize(numCompressed);
            for (size_t cellIdx = 0; cellIdx < numCompressed; ++ cellIdx) {
                size_t cartesianCellIdx = compressedToCartesianCellIdx?compressedToCartesianCellIdx[cellIdx]:cellIdx;
                assert(cartesianCellIdx < pvtnumData.size());

                pvtTableIdx[cellIdx] = pvtnumData[cartesianCellIdx] - 1;
            }
        }
        else {
            // create the pvtIdxArray: all cells use the one and only
            // PVT table...
            pvtTableIdx.resize(numCompressed);
            std::fill(pvtTableIdx.begin(), pvtTableIdx.end(), 0);
        }
    }

} // namespace Opm