/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2011-2018 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 "IOField.H"
#include "CompactIOField.H"
#include "Time.H"

// * * * * * * * * * * * * * * * Global Functions  * * * * * * * * * * * * * //

template<class Type>
Foam::tmp<Foam::IOField<Type>> Foam::reconstructLagrangianField
(
    const word& cloudName,
    const polyMesh& mesh,
    const PtrList<fvMesh>& meshes,
    const word& fieldName
)
{
    // Construct empty field on mesh
    tmp<IOField<Type>> tfield
    (
        new IOField<Type>
        (
            IOobject
            (
                fieldName,
                mesh.time().timeName(),
                cloud::prefix/cloudName,
                mesh,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            Field<Type>(0)
        )
    );
    Field<Type>& field = tfield.ref();

    forAll(meshes, i)
    {
        // Check object on local mesh
        IOobject localIOobject
        (
            fieldName,
            meshes[i].time().timeName(),
            cloud::prefix/cloudName,
            meshes[i],
            IOobject::MUST_READ,
            IOobject::NO_WRITE
        );

        if (localIOobject.typeHeaderOk<IOField<Type>>(true))
        {
            IOField<Type> fieldi(localIOobject);

            label offset = field.size();
            field.setSize(offset + fieldi.size());

            forAll(fieldi, j)
            {
                field[offset + j] = fieldi[j];
            }
        }
    }

    return tfield;
}


template<class Type>
Foam::tmp<Foam::CompactIOField<Foam::Field<Type>, Type>>
Foam::reconstructLagrangianFieldField
(
    const word& cloudName,
    const polyMesh& mesh,
    const PtrList<fvMesh>& meshes,
    const word& fieldName
)
{
    // Construct empty field on mesh
    tmp<CompactIOField<Field<Type>, Type >> tfield
    (
        new CompactIOField<Field<Type>, Type>
        (
            IOobject
            (
                fieldName,
                mesh.time().timeName(),
                cloud::prefix/cloudName,
                mesh,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            Field<Field<Type>>(0)
        )
    );
    Field<Field<Type>>& field = tfield.ref();

    forAll(meshes, i)
    {
        // Check object on local mesh
        IOobject localIOobject
        (
            fieldName,
            meshes[i].time().timeName(),
            cloud::prefix/cloudName,
            meshes[i],
            IOobject::MUST_READ,
            IOobject::NO_WRITE
        );

        if
        (
            localIOobject.typeHeaderOk<CompactIOField<Field<Type>, Type>>
            (
                false
            )
         || localIOobject.typeHeaderOk<IOField<Field<Type>>>(false)
        )
        {
            CompactIOField<Field<Type>, Type> fieldi(localIOobject);

            label offset = field.size();
            field.setSize(offset + fieldi.size());

            forAll(fieldi, j)
            {
                field[offset + j] = fieldi[j];
            }
        }
    }

    return tfield;
}



template<class Type>
void Foam::reconstructLagrangianFields
(
    const word& cloudName,
    const polyMesh& mesh,
    const PtrList<fvMesh>& meshes,
    const IOobjectList& objects,
    const HashSet<word>& selectedFields
)
{
    const word fieldClassName(IOField<Type>::typeName);

    IOobjectList fields = objects.lookupClass(fieldClassName);

    if (fields.size())
    {
        Info<< "    Reconstructing lagrangian "
            << fieldClassName << "s\n" << endl;

        forAllConstIter(IOobjectList, fields, fieldIter)
        {
            if
            (
                selectedFields.empty()
             || selectedFields.found(fieldIter()->name())
            )
            {
                Info<< "        " << fieldIter()->name() << endl;
                reconstructLagrangianField<Type>
                (
                    cloudName,
                    mesh,
                    meshes,
                    fieldIter()->name()
                )().write();
            }
        }

        Info<< endl;
    }
}


template<class Type>
void Foam::reconstructLagrangianFieldFields
(
    const word& cloudName,
    const polyMesh& mesh,
    const PtrList<fvMesh>& meshes,
    const IOobjectList& objects,
    const HashSet<word>& selectedFields
)
{
    {
        const word fieldClassName(CompactIOField<Field<Type>, Type>::typeName);

        IOobjectList fields = objects.lookupClass(fieldClassName);

        if (fields.size())
        {
            Info<< "    Reconstructing lagrangian "
                << fieldClassName << "s\n" << endl;

            forAllConstIter(IOobjectList, fields, fieldIter)
            {
                if
                (
                    selectedFields.empty()
                 || selectedFields.found(fieldIter()->name())
                )
                {
                    Info<< "        " << fieldIter()->name() << endl;
                    reconstructLagrangianFieldField<Type>
                    (
                        cloudName,
                        mesh,
                        meshes,
                        fieldIter()->name()
                    )().write();
                }
            }

            Info<< endl;
        }
    }

    {
        const word fieldClassName(IOField<Field<Type>>::typeName);

        IOobjectList fields = objects.lookupClass(fieldClassName);

        if (fields.size())
        {
            Info<< "    Reconstructing lagrangian "
                << fieldClassName << "s\n" << endl;

            forAllConstIter(IOobjectList, fields, fieldIter)
            {
                if
                (
                    selectedFields.empty()
                 || selectedFields.found(fieldIter()->name())
                )
                {
                    Info<< "        " << fieldIter()->name() << endl;
                    reconstructLagrangianFieldField<Type>
                    (
                        cloudName,
                        mesh,
                        meshes,
                        fieldIter()->name()
                    )().write();
                }
            }

            Info<< endl;
        }
    }
}


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