#!/bin/sh -eu
BUILD_DISTURL=

# To get BUILD_DISTURL
test -f /.buildenv && . /.buildenv

top_dir="/usr/src/packages"
img_dir="${top_dir}/KIWI"
build_dir="/usr/lib/build"
spec_in="${build_dir}/image.spec.in"
arch="$(uname -m)"

log() {
	echo "[tik-img-to-rpm] $@"
}

log "Check for tik-osimage-*.raw.xz in KIWI output directory"
if ! ls ${img_dir}/tik-osimage-*.raw.xz; then
	log "No tik-osimage found" && exit 0
fi

log "tik-osimage-* found: Creating RPM from any tik-osimage-*.raw.xz images"

for f in ${img_dir}/*.raw.xz; do
	base_f=$(echo ${f} | awk -F '.raw.xz' '{print $1}' | awk -F "${img_dir}/" '{print $2}')
	image=${base_f}.raw.xz
	json_f=${img_dir}/${base_f}.cdx.json
	log "[${base_f}] Parsing ${json_f} to populate variables for RPM .spec"
	pkg_version=$(jq '.components[] | select(.name | endswith("-release")) | .version' ${json_f} | tr -d '"' | cut -f 1 -d '-')
	pkg_release=$(jq '.components[] | select(.name | endswith("-release")) | .version' ${json_f} | tr -d '"' | cut -f 2 -d '-')
	pkg_name=$(echo ${base_f} | awk -F ".${arch}" '{print $1}')
	os_name=$(echo ${pkg_name} | awk -F 'tik-osimage-' '{print $2}')
	
	cd ${build_dir}
	sed -e "s@__PKG_NAME__@${pkg_name}@g" \
	-e "s@__VERSION__@${pkg_version}@g" \
	-e "s@__RELEASE__@${pkg_release}@g" \
	-e "s@__SOURCE0__@${image}@g" \
	-e "s@__OS_NAME__@${os_name}@g" \
	< ${spec_in} \
	> ${build_dir}/image.spec
	
	cp /.build-changelog ${build_dir}/image.changes
	${build_dir}/changelog2spec --target rpm --file ${build_dir}/image.changes >> ${build_dir}/image.spec

	# Local builds have the file already in place, that's not true on IBS
	if [ ! -f ${top_dir}/SOURCES/${image} ]; then
  		ln ${f} ${top_dir}/SOURCES
	fi
	
	# Make sure /usr/src/packages/* dirs exist
	if [ ! -f ${top_dir}/BUILD ]; then
	  log "Create BUILD dir"
	  mkdir -p ${top_dir}/BUILD
	fi

	if [ ! -f ${top_dir}/SRPMS ]; then
	  log "Create SRPMS dir"
	  mkdir -p ${top_dir}/SRPMS
	fi

	if [ ! -f ${top_dir}/RPMS/${arch} ]; then
	  log "Create ARCH RPMS dir"
	  mkdir -p ${top_dir}/RPMS/${arch}
	fi
	
	log "Starting build"
	
	if [ -z "$BUILD_DISTURL" ]; then
  		rpmbuild --target ${arch} -ba ${build_dir}/image.spec
	else
		rpmbuild --target ${arch} -ba --define "disturl $BUILD_DISTURL" ${build_dir}/image.spec
	fi

	# required for the BS to find the rpm, because it is
	# a "non-standard result file for KIWI"
	mkdir -p ${top_dir}/OTHER
	mv ${top_dir}/RPMS/${arch}/${pkg_name}-${pkg_version}-${pkg_release}.${arch}.rpm ${top_dir}/OTHER/
	mv ${top_dir}/SRPMS/${pkg_name}-${pkg_version}-${pkg_release}.src.rpm ${top_dir}/OTHER/
done