#!/bin/sh -e
#
# 2018 Ľubomír Kučera <lubomir.kucera.jr at gmail.com>
#
# This file is part of cdist.
#
# cdist 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.
#
# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
#

stack="${__object_id:?}"
state=$(cat "${__object:?}/parameter/state")

case "${state}" in
	absent)
		stack_exists=$(cat "${__object:?}/explorer/stack-exists")

		if [ "${stack_exists}" -ne 1 ]; then
			exit 0
		fi

		echo "docker stack rm ${stack}"
	;;
	present)
		compose_file=$(cat "${__object}/parameter/compose-file")

		if [ -z "${compose_file}" ]; then
			exit 0
		fi

		if [ "${compose_file}" = "-" ]; then
			compose_file="${__object}/stdin"
		fi

		cat <<-EOF
		compose_file="\$(mktemp cdist.XXXXXXXXXX)"

		base64 -d > "\${compose_file}" << eof
		$(base64 "${compose_file}")
		eof

		docker stack deploy --compose-file "\${compose_file}" \
			--prune --with-registry-auth ${stack}

		rm "\${compose_file}"
		EOF
	;;
	*)
		echo "Unsupported state: ${state}" >&2

		exit 1
	;;
esac