///////////////////////////////////////////////////////////////////////////////
//
// File VelocityCorrectionScheme.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).
//
// License for the specific language governing rights and limitations under
// 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: Velocity Correction Scheme header 
//
///////////////////////////////////////////////////////////////////////////////

#ifndef NEKTAR_SOLVERS_VELOCITYCORRECTIONSCHEME_H
#define NEKTAR_SOLVERS_VELOCITYCORRECTIONSCHEME_H

#include <IncNavierStokesSolver/EquationSystems/IncNavierStokes.h>

namespace Nektar
{
    class VelocityCorrectionScheme: public IncNavierStokes
    {
    public:

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

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


        /// Constructor.
        VelocityCorrectionScheme(const LibUtilities::SessionReaderSharedPtr& pSession);

        virtual ~VelocityCorrectionScheme();

        virtual void v_InitObject();

        void SetUpPressureForcing(
                    const Array<OneD, const Array<OneD, NekDouble> > &fields,
                    Array<OneD, Array<OneD, NekDouble> > &Forcing,
                    const NekDouble aii_Dt)
        {
            v_SetUpPressureForcing( fields, Forcing, aii_Dt);
        }

        void SetUpViscousForcing(
                    const Array<OneD, const Array<OneD, NekDouble> > &inarray,
                    Array<OneD, Array<OneD, NekDouble> > &Forcing,
                    const NekDouble aii_Dt)
        {
            v_SetUpViscousForcing( inarray, Forcing, aii_Dt);
        }
        
        void SolvePressure( const Array<OneD, NekDouble>  &Forcing)
        {
            v_SolvePressure( Forcing);
        }
        
        void SolveViscous(
                    const Array<OneD, const Array<OneD, NekDouble> > &Forcing,
                    Array<OneD, Array<OneD, NekDouble> > &outarray,
                    const NekDouble aii_Dt)
        {
            v_SolveViscous( Forcing, outarray, aii_Dt);
        }

        void SolveUnsteadyStokesSystem(
                    const Array<OneD, const Array<OneD, NekDouble> > &inarray,
                    Array<OneD, Array<OneD, NekDouble> > &outarray,
                    const NekDouble time,
                    const NekDouble a_iixDt);

        void EvaluateAdvection_SetPressureBCs(
                    const Array<OneD, const Array<OneD, NekDouble> > &inarray,
                    Array<OneD, Array<OneD, NekDouble> > &outarray,
                    const NekDouble time)
        {
            v_EvaluateAdvection_SetPressureBCs( inarray, outarray, time);
        }

    protected:
        /// bool to identify if spectral vanishing viscosity is active.
        bool m_useHomo1DSpecVanVisc;
        /// bool to identify if spectral vanishing viscosity is active.
        bool m_useSpecVanVisc;
        /// cutt off ratio from which to start decayhing modes
        NekDouble m_sVVCutoffRatio;
        /// Diffusion coefficient of SVV modes
        NekDouble m_sVVDiffCoeff;

        /// Save aiiDt value to use as a trip to reset global matrix setup
        Array<OneD, NekDouble> m_saved_aii_Dt;

        /// Variable Coefficient map for the Laplacian which can be activated as part of SVV or otherwise
        StdRegions::VarCoeffMap m_varCoeffLap; 

        // Virtual functions
        virtual void v_GenerateSummary(SolverUtils::SummaryList& s);

        virtual void v_TransCoeffToPhys(void);

        virtual void v_TransPhysToCoeff(void);

        virtual void v_DoInitialise(void);

        virtual Array<OneD, bool> v_GetSystemSingularChecks();

        virtual int v_GetForceDimension();
        
        virtual void v_SetUpPressureForcing(
                    const Array<OneD, const Array<OneD, NekDouble> > &fields,
                    Array<OneD, Array<OneD, NekDouble> > &Forcing,
                    const NekDouble aii_Dt);
        
        virtual void v_SetUpViscousForcing(
                    const Array<OneD, const Array<OneD, NekDouble> > &inarray,
                    Array<OneD, Array<OneD, NekDouble> > &Forcing,
                    const NekDouble aii_Dt);
        
        virtual void v_SolvePressure( const Array<OneD, NekDouble>  &Forcing);
        
        virtual void v_SolveViscous(
                    const Array<OneD, const Array<OneD, NekDouble> > &Forcing,
                    Array<OneD, Array<OneD, NekDouble> > &outarray,
                    const NekDouble aii_Dt);
        
        virtual void v_EvaluateAdvection_SetPressureBCs(
                    const Array<OneD, const Array<OneD, NekDouble> > &inarray,
                    Array<OneD, Array<OneD, NekDouble> > &outarray,
                    const NekDouble time);
        
    private:
        
    };

    typedef boost::shared_ptr<VelocityCorrectionScheme>
                VelocityCorrectionSchemeSharedPtr;

} //end of namespace


#endif //VELOCITY_CORRECTION_SCHEME_H
