/*  This file is part of the OpenLB library
 *
 *  Copyright (C) 2019 Adrian Kummerländer
 *  E-mail contact: info@openlb.net
 *  The most recent release of OpenLB can be downloaded at
 *  <http://www.openlb.net/>
 *
 *  This program 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 2
 *  of the License, or (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free
 *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA  02110-1301, USA.
*/

#ifndef REFINEMENT_GRID_2D_H
#define REFINEMENT_GRID_2D_H

#include <memory>
#include <vector>

#include "core/unitConverter.h"
#include "core/superLattice2D.h"
#include "geometry/superGeometry2D.h"
#include "geometry/cuboidGeometry2D.h"
#include "geometry/superGeometry2D.h"
#include "communication/loadBalancer.h"
#include "functors/analytical/indicator/indicatorF2D.h"

namespace olb {


template <typename T, template<typename> class DESCRIPTOR> class FineCoupler2D;
template <typename T, template<typename> class DESCRIPTOR> class CoarseCoupler2D;

template <typename T, template<typename> class DESCRIPTOR>
class Grid2D {
private:
  std::unique_ptr<UnitConverter<T,DESCRIPTOR>>  _converter;
  std::unique_ptr<CuboidGeometry2D<T>>          _cuboids;
  std::unique_ptr<LoadBalancer<T>>              _balancer;
  std::unique_ptr<SuperGeometry2D<T>>           _geometry;
  std::unique_ptr<SuperLattice2D<T,DESCRIPTOR>> _lattice;

  std::vector<std::unique_ptr<Grid2D<T,DESCRIPTOR>>> _fineGrids;

  std::vector<std::unique_ptr<FineCoupler2D<T,DESCRIPTOR>>>   _fineCouplers;
  std::vector<std::unique_ptr<CoarseCoupler2D<T,DESCRIPTOR>>> _coarseCouplers;

public:
  static std::unique_ptr<Grid2D<T,DESCRIPTOR>> make(IndicatorF2D<T>& domainF, int resolution, T tau, int re);

  Grid2D(IndicatorF2D<T>& domainF, int resolution, T tau, int re);

  UnitConverter<T,DESCRIPTOR>& getConverter();
  CuboidGeometry2D<T>& getCuboidGeometry();
  LoadBalancer<T>& getLoadBalancer();
  SuperGeometry2D<T>& getSuperGeometry();
  SuperLattice2D<T,DESCRIPTOR>& getSuperLattice();

  void collideAndStream();

  FineCoupler2D<T,DESCRIPTOR>& addFineCoupling(
    Grid2D<T,DESCRIPTOR>& fineGrid, Vector<T,2> origin, Vector<T,2> extend);
  CoarseCoupler2D<T,DESCRIPTOR>& addCoarseCoupling(
    Grid2D<T,DESCRIPTOR>& fineGrid, Vector<T,2> origin, Vector<T,2> extend);

  Vector<T,2> alignOriginToGrid(Vector<T,2> physR) const;
  Vector<T,2> alignExtendToGrid(Vector<T,2> physR) const;

  Grid2D<T,DESCRIPTOR>& refine(IndicatorF2D<T>& domainF);
  Grid2D<T,DESCRIPTOR>& refine(Vector<T,2> origin, Vector<T,2> extend);

};


}

#endif