# Maintainer: Norbert Weber <norbert.weber_at_hzdr.de>
# Contributor: Carlos Aznarán <caznaranl@uni.pe>
# Contributor: Marc Olesen
# Contributor: Xwang <xwaang1976@gmail.com>
# Contributor: George Eleftheriou <eleftg>
# Contributor: Andrew Fischer <andrew_at_apastron.co>
# Contributor: <gucong43216@gmail.com>

# Installs as (for example)
# /opt/OpenFOAM/OpenFOAM-v2312

_distname=OpenFOAM
pkgname=${_distname,,}-com
pkgver=v2312
_dist=${_distname}-${pkgver}
pkgrel=1
pkgdesc="The open source CFD toolbox (www.openfoam.com)"
arch=(i686 x86_64)
url="https://www.${pkgname//-/.}"
license=(GPL-3.0-or-later)
install="${pkgname}.install"
depends=(cgal fftw boost openmpi paraview scotch parmetis-git kahip) # petsc hypre
source=(https://dl.${pkgname//-/.}/source/${pkgver}/${_dist}.tgz)
md5sums=('da71a03f29bf731152a071eaafc056d9')

prepare() {
  if [ -n "$WM_PROJECT_DIR" ]; then
    echo
    echo -e "\e[1m\e[5m\e[31mPlease make sure that no OpenFOAM version is sourced in bashrc.\e[0m"
    echo
    return 1
  fi

  projectDir="${srcdir}/${_dist}"

  # Generate and install the system preferences file
  echo "# Preferences for arch-linux
export WM_COMPILER_TYPE=system
export WM_MPLIB=SYSTEMOPENMPI
# End" \
    >"${projectDir}"/etc/prefs.sh

  # Configure components.
  # Use system values for boost/cgal, fftw, kahip, metis, paraview, scotch
  # -petsc petsc-system -hypre hypre-system -mpfr mpfr-system -gmp gmp-system

  "${projectDir}"/bin/tools/foamConfigurePaths \
    -adios adios-system \
    -boost boost-system \
    -cgal cgal-system \
    -fftw fftw-system \
    -kahip kahip-system \
    -metis metis-system \
    -paraview paraview-system \
    -scotch scotch-system \
    ;
}

build() {
  if [ -n "$WM_PROJECT_DIR" ]; then
    echo
    echo -e "\e[1m\e[5m\e[31mPlease make sure that no OpenFOAM version is sourced in bashrc.\e[0m"
    echo
    return 1
  fi

  projectDir="${srcdir}/${_dist}"
  [ -f "$projectDir/etc/bashrc" ] || {
    echo "No $projectDir/etc/bashrc found"
    return 1
  }

  # Avoid external influence on the environment
  export FOAM_CONFIG_MODE="o"
  unset FOAM_SETTINGS

  set +e # Turn errexit off

  source "$projectDir"/etc/bashrc '' ||
    echo "Ignore spurious sourcing error"

  # it seems, the bashrc file destroys 'projectDir'
  projectDir="${srcdir}/${_dist}"

  set -e # Turn errexit back on
  cd "$projectDir" || exit

  # Dummy application for testing
  #./applications/test/00-dummy/Allwmake

  ./Allwmake -j -log=log.build

  # Check log for this type of content:
  #
  #   api   = 2006
  #   patch = 1
  #   bin   = 283 entries
  #   lib   = 139 entries

  [ -f log.build ] || {
    echo "No log.build file - build failed entirely"
    exit 1
  }

  bins="$(cat log.build | sed -ne 's/.*bin *= *\([0-9][0-9]*\).*/\1/p;' | sed -ne '$p')"
  libs="$(cat log.build | sed -ne 's/.*lib *= *\([0-9][0-9]*\).*/\1/p;' | sed -ne '$p')"

  if [ "${bins:=0}" = 0 ] || [ "${libs:=0}" = 0 ]; then
    echo
    echo "Build failed with $bins executables and $libs libraries"
    echo "Check the log.build file"
    echo
    exit 1
  fi

  # Remove intermediate build artifacts
  rm -rf "${projectDir}/build"
}

package() {
  cd ${srcdir}

  # Installation directories
  parentDir="${pkgdir}/opt/${_distname}"
  projectDir="${parentDir}/${_dist}"

  # Create destination directories
  install -d "${parentDir}" "${pkgdir}"/etc/profile.d || return 1

  # Copy package to pkgdir
  cp -r "${srcdir}/${_dist}" "${parentDir}" || return 1

  # Permission fixes - for system-wide install and use
  chmod -R go+r "${pkgdir}"/opt
  chmod -R 755 "${projectDir}"/bin
  chmod -R 755 "${projectDir}"/etc

  [ -e "${projectDir}"/ThirdParty ] ||
    echo "system dependencies" >|"${projectDir}"/ThirdParty

  # create aliases
  echo "alias of='source /opt/${_distname}/${_dist}/etc/bashrc'" >>"${pkgdir}/etc/profile.d/${pkgname}.sh"
  echo "alias paraFoam='paraFoam -builtin'" >>"${pkgdir}/etc/profile.d/${pkgname}.sh"
}