#!/bin/bash
#
# DEPRECATED: Use builddeb-genesis-base for native Ubuntu builds.
# This script converts an EL-built RPM to .deb via alien.
# Kept for backward compatibility only.
#

# xCAT-genesis-base-x86_64-2.13.10-snap201801090246.noarch.rpm
RPM_PACKAGE="$1"
if [ -z "${RPM_PACKAGE}" ]
then
	echo "Usage: ${0##*/} /path/to/xCAT-genesis-base.rpm"
	exit 0
fi

set -x

[ -n "${RPM_PACKAGE}" ] || exit 1
[ -f "${RPM_PACKAGE}" ] || exit 1

umask 0022

EXTRACT_DIR="${RPM_PACKAGE##*/}"
EXTRACT_DIR="${EXTRACT_DIR%%-snap*}"

rm -rf "${EXTRACT_DIR}"
rm -rf "${EXTRACT_DIR}.orig"
alien -d -g -c -k "${RPM_PACKAGE}" || exit 1

PACKAGE_ARCH="${EXTRACT_DIR%-*}"
PACKAGE_ARCH="${PACKAGE_ARCH##*-}"

# The rpm carries the Genesis target architecture, the deb must carry the Debian architecture.
# alien copies the rpm name into the deb and writes "_" as "-", so x86_64 arrives as x86-64.
case "${PACKAGE_ARCH}" in
x86_64)
	ALIEN_ARCH="x86-64" ; DEB_ARCH="amd64" ;;
ppc64|ppc64le)
	ALIEN_ARCH="${PACKAGE_ARCH}" ; DEB_ARCH="ppc64el" ;;
*)
	ALIEN_ARCH="${PACKAGE_ARCH}" ; DEB_ARCH="${PACKAGE_ARCH}" ;;
esac

if [[ "${DEB_ARCH}" != "${PACKAGE_ARCH}" ]]
then
	rm -rf "${EXTRACT_DIR//${PACKAGE_ARCH}/${DEB_ARCH}}"
	mv "${EXTRACT_DIR}" "${EXTRACT_DIR//${PACKAGE_ARCH}/${DEB_ARCH}}"
	EXTRACT_DIR="${EXTRACT_DIR//${PACKAGE_ARCH}/${DEB_ARCH}}"

	sed -i -e "s/${ALIEN_ARCH}/${DEB_ARCH}/g" "${EXTRACT_DIR}/debian/control"
	sed -i -e "s/${ALIEN_ARCH}/${DEB_ARCH}/g" "${EXTRACT_DIR}/debian/changelog"
fi

# The Genesis debs carry the architecture in the package name, so the packages an upgrade has
# to displace carry it too. 2.19 renames the ppc64 debs to ppc64el; dpkg keeps the old package,
# and its copy of the same files, unless the new one replaces it by name.
case "${DEB_ARCH}" in
ppc64el)
	SUPERSEDED="xcat-genesis-ppc64, xcat-genesis-base-ppc64" ;;
*)
	SUPERSEDED="xcat-genesis-${DEB_ARCH}" ;;
esac

sed -i -e "/^Description:/i Replaces: ${SUPERSEDED}" \
	-e "/^Description:/i Breaks: ${SUPERSEDED}, xcat-genesis-scripts-${DEB_ARCH} (<< 2.13.10)" \
	"${EXTRACT_DIR}/debian/control"

cat >"${EXTRACT_DIR}/debian/preinst" <<EOF
#!/bin/bash

[ -d /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/bin ] &&
	rm -rf /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/bin
[ -d /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/sbin ] &&
	rm -rf /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/sbin
[ -d /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/lib ] &&
	rm -rf /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/lib
[ -d /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/lib64 ] &&
	rm -rf /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/lib64
[ -d /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/var/run ] &&
	rm -rf /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/var/run

exit 0
EOF

chmod 0755 "${EXTRACT_DIR}/debian/preinst"

( cd "${EXTRACT_DIR}" && debian/rules binary )
