/*---------------------------------------------------------------------------*\
  ==  == ====== ====   ====    |
                    \\     ||  | Multiphase Code Repository by HZDR
  ======   //   ||  || ===//   | Website: https://doi.org/10.14278/rodare.767
  ||  ||  //    ||  // || \\   | License: GPL-3.0-or-later
  ==  == ====== ====   ==  ==  |
-------------------------------------------------------------------------------
License
    This file is part of the Multiphase Code Repository by HZDR.

    Copyright (C) 2025 by Helmholtz-Zentrum Dresden-Rossendorf e.V. (HZDR),
    Website: https://hzdr.de

    Multiphase Code Repository by HZDR is based on the free software for
    computational fluid dynamics (CFD) from the OpenFOAM Foundation.
    Copyright (C) 2025 by OpenFOAM Foundation, Website: https://openfoam.org

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    Multiphase Code Repository by HZDR is free software: you can redistribute
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\*---------------------------------------------------------------------------*/

#include "interfaceCompressionModel.H"
#include "phaseSystem.H"
#include "fvcGrad.H"

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
    defineTypeNameAndDebug(interfaceCompressionModel, 0);
    defineRunTimeSelectionTable(interfaceCompressionModel, dictionary);
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::interfaceCompressionModel::interfaceCompressionModel
(
    const dictionary& dict,
    const phaseInterface& interface,
    const bool registerObject
)
:
    regIOobject
    (
        IOobject
        (
            IOobject::groupName(typeName, interface.name()),
            interface.mesh().time().name(),
            interface.mesh(),
            IOobject::NO_READ,
            IOobject::NO_WRITE,
            registerObject
        )
    ),

    interface_(interface.phase1(), interface.phase2()),
    mesh_(interface.mesh())
{}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

Foam::interfaceCompressionModel::~interfaceCompressionModel()
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

Foam::tmp<Foam::surfaceScalarField> Foam::interfaceCompressionModel::phirc
(
    const phaseModel& phase
) const
{
    const surfaceScalarField phir
    (
        phase.phi() - interface_.otherPhase(phase).phi()
    );


    const surfaceScalarField phic
    (
        (mag(phase.fluid().phi()) + mag(phir))/mesh_.magSf()
    );

    const scalar sign(phase.name() == interface_.phase1().name() ? 1 : -1);

    return min(C()*phic, max(phic))*sign*interface_.nHatf();
}


bool Foam::interfaceCompressionModel::writeData(Ostream& os) const
{
    return os.good();
}


// ************************************************************************* //
