///////////////////////////////////////////////////////////////////////////////
//
// File Laplace.cpp
//
// 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: Laplace solve routines 
//
///////////////////////////////////////////////////////////////////////////////

#include <ADRSolver/EquationSystems/Laplace.h>

using namespace std;

namespace Nektar
{
    string Laplace::className = GetEquationSystemFactory().
        RegisterCreatorFunction("Laplace", Laplace::create);

    Laplace::Laplace(
        const LibUtilities::SessionReaderSharedPtr& pSession,
        const SpatialDomains::MeshGraphSharedPtr& pGraph)
        : EquationSystem(pSession, pGraph),
          m_factors()
    {
        m_factors[StdRegions::eFactorLambda] = 0.0;
        m_factors[StdRegions::eFactorTau] = 1.0;
    }

    void Laplace::v_InitObject()
    {
        EquationSystem::v_InitObject();
    }

    Laplace::~Laplace()
    {

    }

    void Laplace::v_GenerateSummary(SolverUtils::SummaryList& s)
    {
        EquationSystem::SessionSummary(s);
        SolverUtils::AddSummaryItem(s, "Lambda",
                                    m_factors[StdRegions::eFactorLambda]);
    }

    void Laplace::v_DoSolve()
    {
        for(int i = 0; i < m_fields.num_elements(); ++i)
        {
            // Zero field so initial conditions are zero
            Vmath::Zero(m_fields[i]->GetNcoeffs(),
                        m_fields[i]->UpdateCoeffs(), 1);
            m_fields[i]->HelmSolve(m_fields[i]->GetPhys(),
                                   m_fields[i]->UpdateCoeffs(),
                                   NullFlagList,
                                   m_factors);
            m_fields[i]->SetPhysState(false);
        }
    }

    Array<OneD, bool> Laplace::v_GetSystemSingularChecks()
    {
        return Array<OneD, bool>(m_session->GetVariables().size(), true);
    }
}
