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#!/bin/sh

# Copyright (C) 2014-2021 Daniel Baumann <daniel.baumann@open-infrastructure.net>
#
# SPDX-License-Identifier: GPL-3.0+
#
# This program 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.
#
# This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.

set -e

PROJECT="open-infrastructure"
SOFTWARE="compute-tools"
PROGRAM="container"
COMMAND="$(basename ${0})"

HOOKS="/etc/${SOFTWARE}/hooks"

Parameters ()
{
	GETOPT_LONGOPTIONS="name:,full-upgrade,autoremove,purge,yes,"
	GETOPT_OPTIONS="n:,f,r,p,y,"

	PARAMETERS="$(getopt --longoptions ${GETOPT_LONGOPTIONS} --name=${COMMAND} --options ${GETOPT_OPTIONS} --shell sh -- ${@})"

	if [ "${?}" != "0" ]
	then
		echo "'${COMMAND}': getopt exit" >&2
		exit 1
	fi

	eval set -- "${PARAMETERS}"

	while true
	do
		case "${1}" in
			-n|--name)
				NAME="${2}"
				shift 2
				;;

			-f|--full-upgrade)
				FULL_UPGRADE="true"
				shift 1
				;;

			-r|--autoremove)
				AUTOREMOVE="true"
				shift 1
				;;

			-p|--purge)
				PURGE="--purge"
				shift 1
				;;

			-y|--yes)
				YES="-y"
				shift 1
				;;

			--)
				shift 1
				break
				;;

			*)
				echo "'${COMMAND}': getopt error" >&2
				exit 1
				;;
		esac
	done
}

Usage ()
{
	echo "Usage: ${PROGRAM} ${COMMAND} -n|--name NAME [-f|--full-upgrade] [-r|--autoremove] [-p|--purge] [-y|--yes]" >&2
	echo
	echo "See ${COMMAND}(1), ${PROGRAM}(1) and ${PROJECT}(7) for more information."

	exit 1
}

Parameters "${@}"

case "${NAME}" in
	ALL)
		NAMES="$(container list --started --format shell)"
		;;

	*)
		NAMES="${NAME}"
		;;
esac

# Pre hooks
for FILE in "${HOOKS}/pre-${COMMAND}".* "${HOOKS}/${NAME}.pre-${COMMAND}"
do
	if [ -x "${FILE}" ]
	then
		"${FILE}"
	fi
done

# Run
for NAME in ${NAMES}
do
	echo "################################################################################"
	echo "Updating ${NAME}"
	echo "################################################################################"

	case "${FULL_UPGRADE}" in
		true)
			container run -n ${NAME} -- "apt update && apt ${YES} full-upgrade"
			;;

		*)
			container run -n ${NAME} -- "apt update && apt ${YES} upgrade"
			;;
	esac

	case "${AUTOREMOVE}" in
		true)
			container run -n ${NAME} -- "apt ${YES} autoremove ${PURGE}"
			;;
	esac

	echo "'${NAME}': container updated."
done

# Post hooks
for FILE in "${HOOKS}/post-${COMMAND}".* "${HOOKS}/${NAME}.post-${COMMAND}"
do
	if [ -x "${FILE}" ]
	then
		"${FILE}"
	fi
done