#!/bin/sh
set -e -u

distribution="$(dpkg-parsechangelog -S Distribution)"
urgency="$(dpkg-parsechangelog -S Urgency)"
date="$(dpkg-parsechangelog -S Date)"
version_binary="$(dpkg-parsechangelog -S Version)"
version_mangled="$(dpkg-parsechangelog -S Version | tr '-' '+')"
pkg_name="shim-helpers-${DEB_HOST_ARCH}-signed-template"
final_pkg_name="${pkg_name%-template}"

subst () {
	sed \
		-e "s/@efi@/${EFI_ARCH}/g" \
		-e "s/@arch@/${DEB_HOST_ARCH}/g" \
		-e "s/@version_binary@/${version_binary}/g" \
		-e "s/@version_mangled@/${version_mangled}/g" \
		-e "s/@distribution@/${distribution}/g" \
		-e "s/@urgency@/${urgency}/g" \
		-e "s/@date@/${date}/g" \
		-e "s/@final_pkg_name@/${final_pkg_name}/g" \
		"$@"
}

template='./debian/signing-template'
pkg_dir="debian/${pkg_name}/usr/share/code-signing/${pkg_name}"
pkg_deb="${pkg_dir}/source-template/debian"

install -o 0 -g 0 -m 0755 -d "${pkg_dir}"
subst < ./debian/signing-template.json.in > "${pkg_dir}/files.json"

find "${template}" -type f -printf '%P\n' |
while read path
do
	src="${template}/${path}"
	dst=$(echo "${pkg_deb}/${path}" | subst)

	install -o 0 -g 0 -m 0755 -d "${dst%/*}"
	subst < "${src}" > "${dst%.in}"
	chmod --reference="${src}" "${dst%.in}"
done

exit 0