/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
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    Copyright (C) 2022-2023 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

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    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.

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

Foam::fileName Foam::coordSetWriters::ensightWriter::writeUncollated
(
    const bool writeTracks
)
{
    return fileName::null;
}


template<class Type>
Foam::fileName Foam::coordSetWriters::ensightWriter::writeUncollated
(
    const word& fieldName,
    const UPtrList<const Field<Type>>& fieldPtrs,
    elemOutputType elemOutput
)
{
    checkOpen();

    const ensight::FileName baseName(outputPath_.name());
    const ensight::VarName  varName(fieldName);


    // Uncollated
    // ==========
    // CaseFile:  rootdir/time/<field>/NAME.case
    // Geometry:  rootdir/time/<field>/NAME.<index>.mesh
    // Field:     rootdir/time/<field>/NAME.<index>.<field>

    // Variable name as sub-directory for results. Eg,
    // - VAR1/NAME1.case
    // - VAR1/NAME1.00000000.mesh
    // - VAR1/NAME1.00000001.VAR1
    // and
    // - VAR2/NAME1.case
    // - VAR2/NAME1.00000000.mesh
    // - VAR2/NAME1.00000001.VAR2


    fileName outputDir;
    if (useTimeDir() && !timeName().empty())
    {
        // Splice in time-directory
        outputDir = outputPath_.path() / timeName();
    }
    else
    {
        outputDir = outputPath_.path();
    }

    const fileName baseDir = outputDir / varName;
    const word   timeDir = timeName();
    const scalar timeValue = currTime_.value();

    const fileName outputFile = baseDir / baseName + ".case";

    if (verbose_)
    {
        Info<< "Writing case file to " << outputFile << endl;
    }

    merge();

    {
        if (!Foam::isDir(outputFile.path()))
        {
            Foam::mkDir(outputFile.path());
        }

        // Two-argument form for path-name to avoid validating base-dir
        ensightGeoFile osGeom
        (
            baseDir,
            baseName + ".00000000.mesh",
            caseOpts_.format()
        );
        ensightFile osField
        (
            baseDir,
            baseName + ".00000000." + varName,
            caseOpts_.format()
        );

        osGeom.beginGeometry();
        writeGeometry(osGeom, elemOutput);

        // Write field (serial only)
        writeTrackField<Type>(osField, fieldPtrs);


        // Update case file
        {
            OFstream osCase
            (
                IOstreamOption::ATOMIC,
                outputFile,
                IOstreamOption::ASCII
            );
            ensightCase::setTimeFormat(osCase, caseOpts_);  // time-format

            osCase
                << "FORMAT" << nl
                << "type: ensight gold" << nl
                << nl
                << "GEOMETRY" << nl
                << "model:  1   " << osGeom.name().name() << nl
                << nl
                << "VARIABLE" << nl
                << ensightPTraits<Type>::typeName
                <<
                (
                    true  // this->isPointData()
                  ? " per node:    1  "  // time-set 1
                  : " per element: 1  "  // time-set 1
                )
                << setw(15) << varName << ' '
                << baseName.c_str() << ".********."
                << ensight::FileName(varName).c_str() << nl;

            osCase
                << nl
                << "TIME" << nl;

            ensightCase::printTimeset(osCase, 1, timeValue);
            osCase << "# end" << nl;
        }
    }

    wroteGeom_ = true;
    return outputFile;
}


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