/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2015 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::parFvFieldReconstructor

Description
    Finite volume reconstructor for volume and surface fields.

    Runs in parallel. Reconstructs from procMesh to baseMesh. baseMesh
    is non-zero cells on processor0 only.

SourceFiles
    parFvFieldReconstructor.C
    parFvFieldReconstructorReconstructFields.C

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

#ifndef parFvFieldReconstructor_H
#define parFvFieldReconstructor_H

#include "PtrList.H"
#include "fvMesh.H"

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

namespace Foam
{

class mapDistributePolyMesh;
class mapDistributeBase;
class IOobjectList;

/*---------------------------------------------------------------------------*\
                    Class parFvFieldReconstructor Declaration
\*---------------------------------------------------------------------------*/

class parFvFieldReconstructor
{
    // Private data

        //- Reconstructed mesh reference
        fvMesh& baseMesh_;

        //- Processor mesh reference
        const fvMesh& procMesh_;

        //- Distribution map reference
        const mapDistributePolyMesh& distMap_;

        //- Do I need to to write (usually master only)
        const bool isWriteProc_;

        //- Patch mappers
        PtrList<mapDistributeBase> patchFaceMaps_;


    // Private Member Functions

        //- Construct per-patch addressing
        void createPatchFaceMaps();

        //- No copy construct
        parFvFieldReconstructor(const parFvFieldReconstructor&) = delete;

        //- No copy assignment
        void operator=(const parFvFieldReconstructor&) = delete;


public:

    // Constructors

        //- Construct from components
        parFvFieldReconstructor
        (
            fvMesh& baseMesh,
            const fvMesh& procMesh,
            const mapDistributePolyMesh& distMap,
            const bool isWriteProc
        );


    // Member Functions

        //- Reconstruct volume internal field
        template<class Type>
        tmp<DimensionedField<Type, volMesh>>
        reconstructFvVolumeInternalField
        (
            const DimensionedField<Type, volMesh>&
        ) 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 GeometricField<Type, fvPatchField, volMesh>& fld
        ) 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 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 wordHashSet& selectedFields
        ) const;

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

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

        //- Helper: reconstruct and write mesh points
        //  (note: should be moved to something like processorMeshes class)
        void reconstructPoints();
};


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

} // End namespace Foam

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

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

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

#endif

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