#---------------------------------*- sh -*-------------------------------------
# =========                 |
# \\      /  F ield         | foam-extend: Open Source CFD
#  \\    /   O peration     |
#   \\  /    A nd           | For copyright notice see file Copyright
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
# License
#     This file is part of foam-extend.
#
#     foam-extend 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.
#
#     foam-extend 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 foam-extend.  If not, see <http://www.gnu.org/licenses/>.
#
# File
#     makeThirdPartyFunctionsForRPM
#
# Description
#     Functions for managing the third-party packages with RPM
#
#------------------------------------------------------------------------------

# define the build and the system architecture type
buildBase=$WM_THIRD_PARTY_DIR/rpmBuild
architecture=`rpm --eval "%{_target_cpu}"`

RPM_CMD='rpm'
RPM_CMD_XTRA_OPTIONS=''

# Adjust the rpm command options on Ubuntu/Debian based systems
${RPM_CMD} --force-debian >& /dev/null

RETVAL=$?
[ $RETVAL -eq 0 ] && RPM_CMD_XTRA_OPTIONS="--force-debian" #Success : Debian system

echo ""
echo "This system rpm command: ${RPM_CMD} ${RPM_CMD_XTRA_OPTIONS}"
echo ""

#
# Download/Build/Uninstall/Install a package
#
rpm_make()
{
    # Avoid word splitting on 'space'
    IFS=$'\n'

    # sort arguments
    _PACKAGE=''
    _SPECFILE=''
    _PACKAGE_URL=''
    _ADDITIONALFLAGS=''
    _RPMFILENAME=''

    while getopts p:s:u:f:n:a: flags
      do
      case $flags in
	  p)  _PACKAGE=$OPTARG
	      ;;
	  u)  _PACKAGE_URL=$OPTARG
	      ;;
	  s)  _SPECFILE=$OPTARG
	      ;;
	  f)  _ADDITIONALFLAGS=$OPTARG
	      ;;
	  n)  _RPMFILENAME=$OPTARG
	      ;;
	  a)  architecture=$OPTARG
	      ;;
      esac
    done

    echo "Package name      : $_PACKAGE"
    echo "Package URL       : $_PACKAGE_URL"
    echo "RPM spec file name: $_SPECFILE"
    echo "Additional flags  : $_ADDITIONALFLAGS"

    # Shift options
    shift `expr $OPTIND - 1`

    # Make sure the ThirdParty environment is up-to-date
    echo "Updating the ThirdParty environment variables before building package $_PACKAGE"
    . $WM_PROJECT_DIR/etc/settings.sh

    if [ "$_RPMFILENAME" = "" ]; then
	rpmName=$_PACKAGE-$WM_OPTIONS.$architecture
    else
	# Filename for the RPM was overridden from the command line
	rpmName=$_RPMFILENAME
    fi

    rpmFile=$buildBase/RPMS/$architecture/$rpmName.rpm

    echo "RPM file name     : $rpmFile"

    # We check immediatly if the RPM binary package is available in the local RPMs vault.
    # If so, we basically uninstall/reinstall the package. This is handy for installation
    # on machines with no Internet access, so without downloading capabilities. If one wants to
    # force the recompilation of a given package, just make sure to move the corresponding RPM
    # binary package away from the local RPM vault.
    #
    if [ ! -e "$rpmFile" ]; then
        #
        # The package's RPM is absent. We build from the package source tarball
        #
	cd $buildBase

        #
        # Do we need to download the package using the supplied URL
	if [ -n "$_PACKAGE_URL" ]; then
            packageTarBall=`basename $_PACKAGE_URL`

            if [ ! -e "SOURCES/$packageTarBall" ]; then
		echo "Download $packageTarBall from : $_PACKAGE_URL"
		( cd SOURCES; wget --no-check-certificate $_PACKAGE_URL )
            fi
	fi

        echo "Making package $_PACKAGE using RPM."
	rpm_build ${_PACKAGE} ${_SPECFILE} ${_ADDITIONALFLAGS} "$@"
    fi

    # Install RPM package if not done already
    if [ "$architecture" = "noarch" ]; then
	installDir=$WM_THIRD_PARTY_DIR/packages/$_PACKAGE/platforms/noarch
    else
	installDir=$WM_THIRD_PARTY_DIR/packages/$_PACKAGE/platforms/$WM_OPTIONS
    fi

    if [ ! -e "$installDir" ]; then
        echo "Installing package: $_PACKAGE"
        rpm_uninstall $_PACKAGE $rpmName
        rpm_install   $_PACKAGE $rpmName $rpmFile
    else
        echo "Package $_PACKAGE is already installed"
    fi

    unset _PACKAGE
    unset _SPECFILE
    unset _PACKAGE_URL
    unset _ADDITIONALFLAGS
    unset _RPMFILENAME

    echo "Done installing package $_PACKAGE"
    echo ""
}

#
# Build a RPM file using the package SPEC file
#
rpm_build()
{
    package="$1"
    specFile="$2"
    shift 2

    cd $buildBase

    [ -e ./SPECS/$specFile ] || {
        echo "rpm_build: Error: missing SPEC file for package $package. Aborting."
        exit -1
    }

    #Build RPM package
    echo "Building package $package using SPEC file : $specFile. Optional args: $@"
    #rpmbuild --define "_topdir $buildBase" --dbpath $buildBase/rpmDB --clean -bb ./SPECS/$specFile "$@"
    #
    # Let's keep the compilation directory alive for now in order to facilitate postmortems of failed compilations
    rpmbuild --define "_topdir $buildBase" --dbpath $buildBase/rpmDB -bb ./SPECS/$specFile "$@"
}

#
# Uninstall a package using its RPM
#
rpm_uninstall()
{
    package="$1"
    rpmName="$2"

    cd $buildBase

    echo "  Uninstalling $package using RPM: $rpmName"
    ${RPM_CMD} ${RPM_CMD_XTRA_OPTIONS} -e $rpmName --dbpath $buildBase/rpmDB --norepackage >& /dev/null

    # Note: rpm will rant when uninstalling packages with an error message
    #       starting with "error: LOOP:"
    #       Googling about this problem shows that this error is benign, and
    #       is related to the list of the files included in the RPM, and the
    #       syntax used in the SPEC file. Need to revisit later... MB
}

#
# Install a package using its relocatable RPM
#
rpm_install()
{
    package="$1";
    rpmName="$2";
    rpmFile="$3";

    echo "  Installing $package using RPM file: $rpmFile";
    ${RPM_CMD} ${RPM_CMD_XTRA_OPTIONS} -ivh              \
	$rpmFile          \
	--dbpath $buildBase/rpmDB --force --nodeps;
}

#
# Populate the local RPM vault with comand-line supplied list of RPMs
#
rpm_makeRPMvault()
{
    rpmVault=$buildBase/RPMS/$architecture

    if [ ! -e $rpmVault ]; then
	echo ""
	echo "Making directory for RPM-files $rpmVault"
	echo ""

	mkdir -p $rpmVault
    fi
}

#
# Populate the local RPM vault with comand-line supplied list of RPMs
#
rpm_populateRPMvault()
{
    rpmVault=$buildBase/RPMS/$architecture

    echo " Local RPM vault location: $rpmVault"
    echo ""
    echo " Moving the following RPMs to the local RPM vault: `echo $@`"

    mv $@ $rpmVault

    echo ""
    echo " Current content of the local RPM vault:"
    ls -axlt $rpmVault
    echo ""

}
#
# Remove an installed package
#
uninstallPackage()
{
    pkg="$1";
    if [ -d $WM_THIRD_PARTY_DIR/packages/${pkg} ]; then
	set -x
	rm -f  $WM_THIRD_PARTY_DIR/rpmBuild/RPMS/$architecture/${pkg}*.rpm
	rm -f  $WM_THIRD_PARTY_DIR/rpmBuild/TGZS/$architecture/${pkg}.tgz
	rm -rf $WM_THIRD_PARTY_DIR/rpmBuild/BUILD/${pkg}*
	rm -rf $WM_THIRD_PARTY_DIR/packages/$pkg
	set +x
    else
	echo "Package ${pkg} is already removed."
    fi
}

# ----------------------------------------------------------------- end-of-file