/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2016-2019 OpenCFD Ltd.
     \\/     M anipulation  |
-------------------------------------------------------------------------------
                            | Copyright (C) 2012-2016 OpenFOAM Foundation
-------------------------------------------------------------------------------
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 "codedFixedValuePointPatchField.H"
#include "addToRunTimeSelectionTable.H"
#include "pointPatchFieldMapper.H"
#include "pointFields.H"
#include "dynamicCode.H"

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

template<class Type>
const Foam::IOdictionary& Foam::codedFixedValuePointPatchField<Type>::dict()
const
{
    const objectRegistry& obr = this->db();

    const IOdictionary* dictptr = obr.cfindObject<IOdictionary>("codeDict");
    if (dictptr)
    {
        return *dictptr;
    }

    return obr.store
    (
        new IOdictionary
        (
            IOobject
            (
                "codeDict",
                this->db().time().system(),
                this->db(),
                IOobject::MUST_READ_IF_MODIFIED,
                IOobject::NO_WRITE
            )
        )
    );
}


template<class Type>
Foam::dlLibraryTable& Foam::codedFixedValuePointPatchField<Type>::libs() const
{
    return const_cast<dlLibraryTable&>(this->db().time().libs());
}


template<class Type>
void Foam::codedFixedValuePointPatchField<Type>::prepare
(
    dynamicCode& dynCode,
    const dynamicCodeContext& context
) const
{
    // Take no chances - typeName must be identical to name_
    dynCode.setFilterVariable("typeName", name_);

    // Set TemplateType and FieldType filter variables
    dynCode.setFieldTemplates<Type>();

    // Compile filtered C template
    dynCode.addCompileFile(codeTemplateC);

    // Copy filtered H template
    dynCode.addCopyFile(codeTemplateH);

    // Debugging: make verbose
    // dynCode.setFilterVariable("verbose", "true");
    // DetailInfo
    //     <<"compile " << name_ << " sha1: "
    //     << context.sha1() << endl;

    // Define Make/options
    dynCode.setMakeOptions
    (
        "EXE_INC = -g \\\n"
        "-I$(LIB_SRC)/finiteVolume/lnInclude \\\n"
      + context.options()
      + "\n\nLIB_LIBS = \\\n"
        "    -lOpenFOAM \\\n"
        "    -lfiniteVolume \\\n"
      + context.libs()
    );
}


template<class Type>
const Foam::dictionary& Foam::codedFixedValuePointPatchField<Type>::codeDict()
const
{
    // Use system/codeDict or in-line
    return
    (
        dict_.found("code")
      ? dict_
      : this->dict().subDict(name_)
    );
}


template<class Type>
Foam::string Foam::codedFixedValuePointPatchField<Type>::description() const
{
    return
        "patch "
      + this->patch().name()
      + " on field "
      + this->internalField().name();
}


template<class Type>
void Foam::codedFixedValuePointPatchField<Type>::clearRedirect() const
{
    // Remove instantiation of pointPatchField provided by library
    redirectPatchFieldPtr_.clear();
}


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

template<class Type>
Foam::codedFixedValuePointPatchField<Type>::codedFixedValuePointPatchField
(
    const pointPatch& p,
    const DimensionedField<Type, pointMesh>& iF
)
:
    fixedValuePointPatchField<Type>(p, iF),
    codedBase(),
    redirectPatchFieldPtr_()
{}


template<class Type>
Foam::codedFixedValuePointPatchField<Type>::codedFixedValuePointPatchField
(
    const codedFixedValuePointPatchField<Type>& ptf,
    const pointPatch& p,
    const DimensionedField<Type, pointMesh>& iF,
    const pointPatchFieldMapper& mapper
)
:
    fixedValuePointPatchField<Type>(ptf, p, iF, mapper),
    codedBase(),
    dict_(ptf.dict_),
    name_(ptf.name_),
    redirectPatchFieldPtr_()
{}


template<class Type>
Foam::codedFixedValuePointPatchField<Type>::codedFixedValuePointPatchField
(
    const pointPatch& p,
    const DimensionedField<Type, pointMesh>& iF,
    const dictionary& dict,
    const bool valueRequired
)
:
    fixedValuePointPatchField<Type>(p, iF, dict, valueRequired),
    codedBase(),
    dict_(dict),
    name_(dict.getCompat<word>("name", {{"redirectType", 1706}})),
    redirectPatchFieldPtr_()
{
    updateLibrary(name_);
}


template<class Type>
Foam::codedFixedValuePointPatchField<Type>::codedFixedValuePointPatchField
(
    const codedFixedValuePointPatchField<Type>& ptf
)
:
    fixedValuePointPatchField<Type>(ptf),
    codedBase(),
    dict_(ptf.dict_),
    name_(ptf.name_),
    redirectPatchFieldPtr_()
{}


template<class Type>
Foam::codedFixedValuePointPatchField<Type>::codedFixedValuePointPatchField
(
    const codedFixedValuePointPatchField<Type>& ptf,
    const DimensionedField<Type, pointMesh>& iF
)
:
    fixedValuePointPatchField<Type>(ptf, iF),
    codedBase(),
    dict_(ptf.dict_),
    name_(ptf.name_),
    redirectPatchFieldPtr_()
{}


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

template<class Type>
const Foam::pointPatchField<Type>&
Foam::codedFixedValuePointPatchField<Type>::redirectPatchField() const
{
    if (!redirectPatchFieldPtr_.valid())
    {
        // Construct a patch
        // Make sure to construct the patchfield with up-to-date value

        OStringStream os;
        os.writeEntry("type", name_);
        static_cast<const Field<Type>&>(*this).writeEntry("value", os);
        IStringStream is(os.str());
        dictionary dict(is);

        redirectPatchFieldPtr_.reset
        (
            pointPatchField<Type>::New
            (
                this->patch(),
                this->internalField(),
                dict
            ).ptr()
        );
    }
    return *redirectPatchFieldPtr_;
}


template<class Type>
void Foam::codedFixedValuePointPatchField<Type>::updateCoeffs()
{
    if (this->updated())
    {
        return;
    }

    // Make sure library containing user-defined pointPatchField is up-to-date
    updateLibrary(name_);

    const pointPatchField<Type>& fvp = redirectPatchField();

    const_cast<pointPatchField<Type>&>(fvp).updateCoeffs();

    // Copy through value
    this->operator==(fvp);

    fixedValuePointPatchField<Type>::updateCoeffs();
}


template<class Type>
void Foam::codedFixedValuePointPatchField<Type>::evaluate
(
    const Pstream::commsTypes commsType
)
{
    // Make sure library containing user-defined pointPatchField is up-to-date
    updateLibrary(name_);

    const pointPatchField<Type>& fvp = redirectPatchField();

    const_cast<pointPatchField<Type>&>(fvp).evaluate(commsType);

    fixedValuePointPatchField<Type>::evaluate(commsType);
}


template<class Type>
void Foam::codedFixedValuePointPatchField<Type>::write(Ostream& os) const
{
    fixedValuePointPatchField<Type>::write(os);
    os.writeEntry("name", name_);

    codedBase::writeCodeDict(os, dict_);
}


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