///////////////////////////////////////////////////////////////////////////////
//
// File: PointExp.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: Definition of a Point expansion
//
///////////////////////////////////////////////////////////////////////////////

#ifndef POINTEXP_H
#define POINTEXP_H

#include <LocalRegions/Expansion0D.h>
#include <LocalRegions/LocalRegionsDeclspec.h>
#include <SpatialDomains/PointGeom.h>
#include <StdRegions/StdPointExp.h>

namespace Nektar::LocalRegions
{
class PointExp : virtual public StdRegions::StdPointExp,
                 virtual public Expansion0D
{
public:
    LOCAL_REGIONS_EXPORT PointExp(SpatialDomains::Geometry0D *m_geom);
    LOCAL_REGIONS_EXPORT ~PointExp() override = default;

    inline const Array<OneD, const NekDouble> &GetCoeffs(void) const
    {
        return m_coeffs;
    }

    inline NekDouble GetCoeffs(int i) const
    {
        ASSERTL1(i == 0, "index out of range");

        return m_coeffs[i];
    }

    inline NekDouble GetPhys(int i) const
    {
        ASSERTL1(i == 0, "index out of range");

        return m_phys[i];
    }

    inline NekDouble GetCoeff(int i) const
    {
        ASSERTL1(i == 0, "index out of range");

        return m_coeffs[i];
    }

    inline Array<OneD, NekDouble> &UpdateCoeffs(void)
    {
        return (m_coeffs);
    }

    inline void SetCoeff(const NekDouble value)
    {
        m_coeffs[0] = value;
    }

    inline const Array<OneD, const NekDouble> &GetPhys(void) const
    {
        return m_phys;
    }

    inline Array<OneD, NekDouble> &UpdatePhys(void)
    {
        return (m_phys);
    }

    inline void SetPhys(const NekDouble value)
    {
        m_phys[0] = value;
    }

    inline void GetCoords(NekDouble &x, NekDouble &y, NekDouble &z)
    {
        auto v = static_cast<SpatialDomains::PointGeom *>(m_geom);
        v->GetCoords(x, y, z);
    }

    inline const SpatialDomains::PointGeom *GetGeom() const
    {
        return static_cast<SpatialDomains::PointGeom *>(m_geom);
    }

protected:
    Array<OneD, NekDouble>
        m_coeffs; //!< Array containing expansion coefficients
    Array<OneD, NekDouble>
        m_phys; //!< Array containing physical point which is likely to be the
                //!< same as the coefficient but is defined for consistency (It
                //!< is also used in Robin boundary conditions)

    void v_GetCoords(Array<OneD, NekDouble> &coords_0,
                     Array<OneD, NekDouble> &coords_1,
                     Array<OneD, NekDouble> &coords_2) override;

    void v_NormVectorIProductWRTBase(const Array<OneD, const NekDouble> &Fx,
                                     Array<OneD, NekDouble> &outarray) override;
};

typedef std::shared_ptr<PointExp> PointExpSharedPtr;
typedef std::vector<PointExpSharedPtr> PointExpVector;

const static Array<OneD, PointExpSharedPtr> NullPointExpSharedPtrArray{};
} // namespace Nektar::LocalRegions

#endif // POINTEXP_H
