/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 2011-2022 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/>.

Class
    Foam::fvFieldReconstructor

Description
    Finite volume reconstructor for volume and surface fields.

SourceFiles
    fvFieldReconstructor.C
    fvFieldReconstructorReconstructFields.C

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

#ifndef fvFieldReconstructor_H
#define fvFieldReconstructor_H

#include "PtrList.H"
#include "surfaceFields.H"
#include "IOobjectList.H"
#include "fvPatchFieldMapper.H"
#include "setSizeFieldMapper.H"
#include "labelIOList.H"

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

namespace Foam
{

/*---------------------------------------------------------------------------*\
                    Class fvFieldReconstructor Declaration
\*---------------------------------------------------------------------------*/

class fvFieldReconstructor
{
    // Private Data

        //- Reconstructed mesh reference
        const fvMesh& completeMesh_;

        //- List of processor meshes
        const PtrList<fvMesh>& procMeshes_;

        //- List of processor face addressing lists
        const labelListList& faceProcAddressing_;

        //- List of processor cell addressing lists
        const labelListList& cellProcAddressing_;

        //- Boundary field of face addressing
        const PtrList<surfaceLabelField::Boundary>& faceProcAddressingBf_;

        //- Number of fields reconstructed
        label nReconstructed_;


    // Private Member Functions

        //- Convert a processor patch to the corresponding complete patch index
        label completePatchID(const label proci, const label procPatchi) const;

        //- ...
        template<class Type>
        static void rmapFaceToFace
        (
            Field<Type>& toField,
            const Field<Type>& fromField,
            const labelUList& addressing,
            const bool isFlux
        );


public:

        //- Mapper for sizing only - does not do any actual mapping.
        class fvPatchFieldReconstructor
        :
            public fvPatchFieldMapper,
            public setSizeFieldMapper
        {
        public:

            // Constructors

                //- Construct given size
                fvPatchFieldReconstructor(const label size)
                :
                    setSizeFieldMapper(size)
                {}
        };


    // Constructors

        //- Construct from components
        fvFieldReconstructor
        (
            const fvMesh& mesh,
            const PtrList<fvMesh>& procMeshes,
            const labelListList& faceProcAddressing,
            const labelListList& cellProcAddressing,
            const PtrList<surfaceLabelField::Boundary>& faceProcAddressingBf
        );

        //- Disallow default bitwise copy construction
        fvFieldReconstructor(const fvFieldReconstructor&) = delete;


    // Member Functions

        //- Return number of fields reconstructed
        label nReconstructed() const
        {
            return nReconstructed_;
        }

        //- Reconstruct volume internal field
        template<class Type>
        tmp<DimensionedField<Type, volMesh>>
        reconstructFvVolumeInternalField
        (
            const IOobject& fieldIoObject,
            const PtrList<DimensionedField<Type, volMesh>>& procFields
        ) const;

        //- Read and reconstruct volume internal field
        template<class Type>
        tmp<DimensionedField<Type, volMesh>>
        reconstructFvVolumeInternalField(const IOobject& fieldIoObject) const;


        //- Reconstruct volume field
        template<class Type>
        tmp<GeometricField<Type, fvPatchField, volMesh>>
        reconstructFvVolumeField
        (
            const IOobject& fieldIoObject,
            const PtrList<GeometricField<Type, fvPatchField, volMesh>>&
        ) const;

        //- Read and reconstruct volume field
        template<class Type>
        tmp<GeometricField<Type, fvPatchField, volMesh>>
        reconstructFvVolumeField(const IOobject& fieldIoObject) const;


        //- Reconstruct surface field
        template<class Type>
        tmp<GeometricField<Type, fvsPatchField, surfaceMesh>>
        reconstructFvSurfaceField
        (
            const IOobject& fieldIoObject,
            const PtrList<GeometricField<Type, fvsPatchField, surfaceMesh>>&
        ) const;

        //- Read and reconstruct surface field
        template<class Type>
        tmp<GeometricField<Type, fvsPatchField, surfaceMesh>>
        reconstructFvSurfaceField(const IOobject& fieldIoObject) const;

        //- Read, reconstruct and write all/selected volume internal fields
        template<class Type>
        void reconstructFvVolumeInternalFields
        (
            const IOobjectList& objects,
            const HashSet<word>& selectedFields
        );

        //- Read, reconstruct and write all/selected volume fields
        template<class Type>
        void reconstructFvVolumeFields
        (
            const IOobjectList& objects,
            const HashSet<word>& selectedFields
        );

        //- Read, reconstruct and write all/selected surface fields
        template<class Type>
        void reconstructFvSurfaceFields
        (
            const IOobjectList& objects,
            const HashSet<word>& selectedFields
        );


    // Member Operators

        //- Disallow default bitwise assignment
        void operator=(const fvFieldReconstructor&) = delete;
};


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

} // End namespace Foam

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

#ifdef NoRepository
    #include "fvFieldReconstructorReconstructFields.C"
#endif

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

#endif

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