#!/bin/sh -e
#
# 2020 Dennis Camera (dennis.camera@ssrq-sds-fds.ch)
#
# 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/>.
#


os=$(cat "${__global:?}/explorer/os")

case $os
in
	(debian)
		os_major=$(grep -o '^[0-9][0-9]*' "${__global:?}/explorer/os_version")
		test "${os_major}" -ge 7 \
			|| die 'Debian versions older than 7 (wheezy) are not supported'

		impl_type=ifupdown.d
		;;
	(devuan)
		impl_type=ifupdown.d
		;;
	(centos|redhat|scientific|suse)
		impl_type=ifcfg
		;;
	(*)
		printf "Your operating system (%s) is currently not supported by this type (%s)\n" "${os}" "${__type##*/}" >&2
		printf "Please contribute an implementation for it if you can.\n" >&2
		exit 1
		;;
esac

# Hand over to backend-specific implementation
manifest_file="${__type:?}/files/backends/${impl_type}/manifest"
test -x "${manifest_file}" || {
	printf 'Unknown type: %s\n' "${impl_type}" >&2
	exit 1
}

# Run backend-specific script
exec "${manifest_file}"