Name:           openfoam
Version:        13
Release:        1%{?dist}
Summary:        Open source CFD (Computational Fluid Dynamics) toolbox

License:        GPL-3.0-or-later
URL:            https://openfoam.org/
Source0:        https://github.com/OpenFOAM/OpenFOAM-%{version}/archive/refs/tags/version-%{version}.tar.gz#/OpenFOAM-%{version}.tar.gz
Source1:        https://github.com/OpenFOAM/ThirdParty-%{version}/archive/refs/tags/version-%{version}.tar.gz#/ThirdParty-%{version}.tar.gz

BuildRequires:  gcc-c++
BuildRequires:  cmake
BuildRequires:  flex
BuildRequires:  zlib-devel
BuildRequires:  openmpi-devel
BuildRequires:  boost-devel
BuildRequires:  CGAL-devel
BuildRequires:  fftw-devel
BuildRequires:  scotch-devel
BuildRequires:  metis-devel
BuildRequires:  readline-devel
BuildRequires:  ncurses-devel

Requires:       openmpi
Requires:       environment-modules

# Filter private libraries
%global __provides_exclude_from ^%{_libdir}/openfoam/.*\\.so.*$
%global __requires_exclude ^(libOpenFOAM|libfiniteVolume|libmeshTools|libtriSurface|libfileFormats|libgenericPatchFields|liblagrangian|libconversion|libsampling|libsurfMesh).*\\.so.*$

%description
OpenFOAM is a free, open source CFD software package developed by
OpenFOAM Foundation. It has a large user base across most areas of
engineering and science, from both commercial and academic organisations.
OpenFOAM has an extensive range of features to solve anything from complex
fluid flows involving chemical reactions, turbulence and heat transfer,
to solid dynamics and electromagnetics.

%prep
%setup -q -n OpenFOAM-%{version}-version-%{version} -a 1
# Move ThirdParty to expected location
mv ThirdParty-%{version}-version-%{version} ../ThirdParty-%{version}

%build
# Source OpenFOAM environment
export FOAM_INST_DIR=$(cd .. && pwd)
export WM_PROJECT_DIR=$(pwd)

# Configure for system installation
sed -i "s|WM_PROJECT_INST_DIR=\$FOAM_INST_DIR|WM_PROJECT_INST_DIR=%{_libdir}|" etc/bashrc
sed -i "s|export WM_PROJECT_USER_DIR=.*|export WM_PROJECT_USER_DIR=\$HOME/OpenFOAM/\$USER-\$WM_PROJECT_VERSION|" etc/bashrc

# Use system MPI
sed -i "s|export WM_MPLIB=SYSTEMOPENMPI|export WM_MPLIB=OPENMPI|" etc/config.sh/mpi || true
sed -i "s|WM_MPLIB=SYSTEMOPENMPI|WM_MPLIB=OPENMPI|" etc/bashrc || true

# Set compiler flags
export FOAM_EXTRA_CFLAGS="%{optflags}"
export FOAM_EXTRA_CXXFLAGS="%{optflags}"

# Set number of build processes
export WM_NCOMPPROCS="%{?_smp_mflags}"

# Load MPI module
%_openmpi_load

# Source the environment
source etc/bashrc

# Build OpenFOAM
./Allwmake -j -s -q 2>&1 | tee build.log || ./Allwmake -j 2>&1 | tee build-verbose.log

%_openmpi_unload

%install
# Create installation directory
install -dm 0755 %{buildroot}%{_libdir}/openfoam-%{version}

# Copy the built files
cp -a platforms %{buildroot}%{_libdir}/openfoam-%{version}/
cp -a etc %{buildroot}%{_libdir}/openfoam-%{version}/
cp -a bin %{buildroot}%{_libdir}/openfoam-%{version}/
cp -a applications %{buildroot}%{_libdir}/openfoam-%{version}/
cp -a tutorials %{buildroot}%{_libdir}/openfoam-%{version}/

# Create environment module file
install -dm 0755 %{buildroot}%{_datadir}/modulefiles/openfoam
cat > %{buildroot}%{_datadir}/modulefiles/openfoam/%{version} <<'EOF'
#%%Module1.0
proc ModulesHelp { } {
    puts stderr "OpenFOAM %{version} - CFD Toolbox"
}

module-whatis "OpenFOAM %{version} - Open source CFD toolbox"

module load mpi/openmpi-%{_arch}

setenv FOAM_INST_DIR %{_libdir}
setenv WM_PROJECT_DIR %{_libdir}/openfoam-%{version}
setenv WM_PROJECT OpenFOAM
setenv WM_PROJECT_VERSION %{version}

prepend-path PATH %{_libdir}/openfoam-%{version}/platforms/linux64GccDPInt32Opt/bin
prepend-path LD_LIBRARY_PATH %{_libdir}/openfoam-%{version}/platforms/linux64GccDPInt32Opt/lib
EOF

# Create wrapper script
install -dm 0755 %{buildroot}%{_sysconfdir}/profile.d
cat > %{buildroot}%{_sysconfdir}/profile.d/openfoam-%{version}.sh <<'EOF'
#!/bin/bash
# OpenFOAM %{version} environment setup
export FOAM_INST_DIR=%{_libdir}
export WM_PROJECT_DIR=%{_libdir}/openfoam-%{version}

if [ -f $WM_PROJECT_DIR/etc/bashrc ]; then
    source $WM_PROJECT_DIR/etc/bashrc
fi
EOF

%files
%doc README.md
%license COPYING
%config(noreplace) %{_sysconfdir}/profile.d/openfoam-%{version}.sh
%{_libdir}/openfoam-%{version}/
%{_datadir}/modulefiles/openfoam/%{version}

%changelog
* Mon Oct 27 2025 Your Name <your.email@example.com> - 13-1
- Initial OpenFOAM 13 package for COPR