/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2011-2021 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.

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

#include "readFields.H"
#include "volFields.H"
#include "surfaceFields.H"
#include "addToRunTimeSelectionTable.H"

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

namespace Foam
{
namespace functionObjects
{
    defineTypeNameAndDebug(readFields, 0);
    addToRunTimeSelectionTable(functionObject, readFields, dictionary);
}
}


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

Foam::functionObjects::readFields::readFields
(
    const word& name,
    const Time& runTime,
    const dictionary& dict
)
:
    fvMeshFunctionObject(name, runTime, dict),
    fields_()
{
    read(dict);
}


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

Foam::functionObjects::readFields::~readFields()
{}


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

bool Foam::functionObjects::readFields::read(const dictionary& dict)
{
    fvMeshFunctionObject::read(dict);

    dict.lookup("fields") >> fields_;

    return true;
}


Foam::wordList Foam::functionObjects::readFields::fields() const
{
    return fields_;
}


bool Foam::functionObjects::readFields::execute()
{
    // Clear out any previously loaded fields
    vsf_.clear();
    vvf_.clear();
    vSpheretf_.clear();
    vSymmtf_.clear();
    vtf_.clear();

    ssf_.clear();
    svf_.clear();
    sSpheretf_.clear();
    sSymmtf_.clear();
    stf_.clear();

    forAll(fields_, fieldi)
    {
        const word& fieldName = fields_[fieldi];

        // If necessary load field
        loadField<scalar>(fieldName, vsf_, ssf_);
        loadField<vector>(fieldName, vvf_, svf_);
        loadField<sphericalTensor>(fieldName, vSpheretf_, sSpheretf_);
        loadField<symmTensor>(fieldName, vSymmtf_, sSymmtf_);
        loadField<tensor>(fieldName, vtf_, stf_);
    }

    return true;
}


bool Foam::functionObjects::readFields::write()
{
    return true;
}


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