/*
  Copyright 2019 Equinor ASA

  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 BDABRIDGE_HEADER_INCLUDED
#define BDABRIDGE_HEADER_INCLUDED

#include <config.h>
#include "dune/istl/solver.hh" // for struct InverseOperatorResult

#include "dune/istl/bcrsmatrix.hh"
#include <opm/simulators/linalg/matrixblock.hh>

#if HAVE_CUDA
#include <opm/simulators/linalg/bda/cusparseSolverBackend.hpp>
#endif

namespace Opm
{

typedef Dune::InverseOperatorResult InverseOperatorResult;


class BdaBridge
{
private:
#if HAVE_CUDA
	std::unique_ptr<cusparseSolverBackend> backend;
#endif
	bool use_gpu;

public:
	BdaBridge(bool use_gpu, int linear_solver_verbosity, int maxit, double tolerance);

	~BdaBridge();

	template <class BridgeMatrix, class BridgeVector>
	void solve_system(BridgeMatrix *mat, BridgeVector &b, InverseOperatorResult &result);

	template <class BridgeVector>
	void get_result(BridgeVector &x);

}; // end class BdaBridge

}

#endif