/*---------------------------------------------------------------------------*\
  ==  == ====== ====   ====    |
                    \\     ||  | 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

    If you are interested in which files are original OpenFOAM Foundation
    files, which OpenFOAM Foundation files were modified, and which files were
    newly created, see FILES.md.

    Multiphase Code Repository by HZDR is free software: you can redistribute
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    License, or (at your option) any later version.

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\*---------------------------------------------------------------------------*/

#include "morphologyTransfer.H"
#include "fvmSup.H"
#include "multiphaseEuler.H"
#include "addToRunTimeSelectionTable.H"

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

namespace Foam
{
namespace fv
{
    defineTypeNameAndDebug(morphologyTransfer, 0);
    addToRunTimeSelectionTable(fvModel, morphologyTransfer, dictionary);
}
}


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

void Foam::fv::morphologyTransfer::readCoeffs
(
    const dictionary& dict
)
{
    const dispersedPhaseInterface interface(phase1_, phase2_);

    morphologyTransferModel_.reset
    (
        morphologyTransferModel::New(dict, interface).ptr()
    );
}


void Foam::fv::morphologyTransfer::correctMDot() const
{
    mDot_ = morphologyTransferModel_->dmdtf();
}


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

Foam::fv::morphologyTransfer::morphologyTransfer
(
    const word& name,
    const word& modelType,
    const fvMesh& mesh,
    const dictionary& dict
)
:
    phaseChange(name, modelType, mesh, dict, NullObjectRef<wordList>()),
    solver_(mesh().lookupObject<solvers::multiphaseEuler>(solver::typeName)),
    fluid_(solver_.fluid),
    morphologyTransferModel_(nullptr),
    phase1_(fluid_.phases()[phaseNames().first()]),
    phase2_(fluid_.phases()[phaseNames().second()]),
    pressureEquationIndex_(-1),
    mDot_
    (
        IOobject
        (
            name + ":mDot",
            mesh.time().name(),
            mesh,
            IOobject::READ_IF_PRESENT,
            IOobject::AUTO_WRITE
        ),
        mesh,
        dimensionedScalar(dimDensity/dimTime, 0)
    )
{
    readCoeffs(coeffs(dict));
}


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

Foam::tmp<Foam::volScalarField::Internal>
Foam::fv::morphologyTransfer::mDot() const
{
    return mDot_;
}


void Foam::fv::morphologyTransfer::addSup
(
    const volScalarField& alpha,
    const volScalarField& rho,
    fvMatrix<scalar>& eqn
) const
{
    // Pressure equation (i.e., continuity, linearised in the pressure)
    if
    (
        (&alpha == &phase1_ || &alpha == &phase2_)
     && (&rho == &phase1_.rho() || &rho == &phase2_.rho())
     && &eqn.psi() == &solver_.p_rgh
    )
    {
        // Ensure that the source is up-to date if this is the first call in
        // this outer corrector
        if (pressureEquationIndex_ == 0) correctMDot();
        pressureEquationIndex_ ++;
    }

    massTransfer::addSup(alpha, rho, eqn);
}


void Foam::fv::morphologyTransfer::correct()
{
    Info<< type() << ": " << name() << endl << incrIndent;

    // Reset the p_rgh equation solution counter
    pressureEquationIndex_ = 0;

    // Correct the total phase change rate
    correctMDot();
    infoField("mDot", mDot_);

    Info<< decrIndent;
}


bool Foam::fv::morphologyTransfer::read(const dictionary& dict)
{
    if (phaseChange::read(dict))
    {
        readCoeffs(coeffs(dict));
        return true;
    }
    else
    {
        return false;
    }
}


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