/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  12
     \\/     M anipulation  |
-------------------------------------------------------------------------------
Description
    Prints data to a log file

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

libs     ("libutilityFunctionObjects.so");
type     coded;

// Write at the end of every time step but not time zero
executeAtStart  no;
writeControl    timeStep;
writeInterval   1;

// Parameters, which can be read from other files using macro expansions, e.g.
// magU  ${${FOAM_CASE}/0/U!Uinlet};
rho  1.2;

codeInclude
#{
    // Header files for classes and functions
    #include "OFstream.H"
    #include "OSspecific.H"
    #include "fvc.H"
#};

// Header file paths for Make/options, e.g. for momentum transport models
// Example:
// -I$(LIB_SRC)/MomentumTransportModels/incompressible/lnInclude
codeOptions
#{
#};

// Linked libraries for Make/options, e.g. for momentum transport models
// Not usually required since libraries are already linked to the solver
// Example:
// -lincompressibleMomentumTransportModels
codeLibs
#{
#};

codeData
#{
    autoPtr<OFstream> file;
    autoPtr<scalar> rho;
#};

codeRead
#{
    fileName dir
    (
        mesh().time().globalPath()/
        "postProcessing"/
        mesh().time().name()/
        name()
    );

    mkDir(dir);
    file = new OFstream(dir/"data");

    // Print a short file header
    file()<< "#time" << tab << "KE" << endl;

    rho = new scalar($rho);
#};

codeWrite
#{
    const volVectorField& U = mesh().lookupObject<volVectorField>("U");

    scalar KE = 0.5*rho*fvc::domainIntegrate(magSqr(U)).value();

    // Print time-value data in two columns
    file()<< mesh().time().userTimeValue() << tab << KE << endl;
#};

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