///////////////////////////////////////////////////////////////////////////////
//
// File: IterativeElasticSystem.h
//
// For more information, please see: http://www.nektar.info
//
// The MIT License
//
// Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
// Department of Aeronautics, Imperial College London (UK), and Scientific
// Computing and Imaging Institute, University of Utah (USA).
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// Description: Linear elasticity equation system
//
///////////////////////////////////////////////////////////////////////////////

#ifndef NEKTAR_SOLVERS_LINEARELASTICSOLVER_EQUATIONSYSTEMS_ITERELASSYSTEM_H
#define NEKTAR_SOLVERS_LINEARELASTICSOLVER_EQUATIONSYSTEMS_ITERELASSYSTEM_H

#include <LinearElasticSolver/EquationSystems/LinearElasticSystem.h>
#include <SolverUtils/EquationSystem.h>

namespace Nektar
{

using namespace SolverUtils;

/**
 * @brief Class for iterative elastic system, in which linear elasticity is
 * applied in substeps to attain a large deformation.
 */
class IterativeElasticSystem : public LinearElasticSystem
{
public:
    /// Class may only be instantiated through the MemoryManager.
    friend class MemoryManager<IterativeElasticSystem>;

    /// Creates an instance of this class
    static EquationSystemSharedPtr create(
        const LibUtilities::SessionReaderSharedPtr &pSession,
        const SpatialDomains::MeshGraphSharedPtr &pGraph)
    {
        EquationSystemSharedPtr p =
            MemoryManager<IterativeElasticSystem>::AllocateSharedPtr(pSession,
                                                                     pGraph);
        p->InitObject();
        return p;
    }

    /// Name of class
    static std::string className;

protected:
    /// Number of steps to split deformation across.
    int m_numSteps;
    /// Flag determining whether to repeat boundary conditions.
    bool m_repeatBCs;
    /// Storage for boundary conditions.
    Array<OneD, Array<OneD, Array<OneD, NekDouble>>> m_savedBCs;
    /// Vector of boundary regions to deform.
    std::vector<int> m_toDeform;

    IterativeElasticSystem(const LibUtilities::SessionReaderSharedPtr &pSession,
                           const SpatialDomains::MeshGraphSharedPtr &pGraph);

    void v_InitObject(bool DeclareFields = true) override;
    void v_GenerateSummary(SolverUtils::SummaryList &s) override;
    void v_DoSolve() override;

    void WriteGeometry(const int i);
};

} // namespace Nektar

#endif
