#!/bin/sh

IMG=$1
PKGLISTFILE=$2

if ! [ $# -eq 2 ]; then
echo "usage $0 <img_file_name> <package_list>"
exit
fi


if [ -f $IMG ]; then
        echo "-> Image file already exists, assuming *update*..."
        mount -o loop,offset=$((63*512)) $IMG mnt || exit 1
        INSTALLDIR=`pwd`/mnt/
else

        echo "-> Initializing empty image with part table and filesystems..."
        tar kOxf clean_images/clean-starter.img.tar > $IMG

        touch $IMG || exit 1

        mkdir -p mnt
        mount -o loop,offset=$((63*512)) $IMG mnt || exit 1

        INSTALLDIR=`pwd`/mnt/

        echo "-> Initializing RPM database..."
        rpm --initdb --root=$INSTALLDIR
        rpm --import --root=$INSTALLDIR keys/*

        echo "-> Installing core RPM packages..."
        rpm -i --root=$INSTALLDIR base_rpms/setup-*.rpm
        rpm -i --root=$INSTALLDIR base_rpms/filesystem-*.rpm
        rpm -i --root=$INSTALLDIR base_rpms/fedora-release-*.rpm

        cp clean_images/network $INSTALLDIR/etc/sysconfig
        cp clean_images/resolv.conf $INSTALLDIR/etc

fi

PKGGROUPS=$(cat $PKGLISTFILE)
echo "-> Installing package groups..."
yum install -y --installroot=$INSTALLDIR $PKGGROUPS

umount mnt