#!/bin/bash
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2010  Michael Tremer & Christian Schmidt                      #
#                                                                             #
# 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 <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################

service_start() {
	local name=${1}
	assert isset name

	# Don't start anything if this is already running
	if service_is_active "${name}"; then
		return ${EXIT_OK}
	fi

	systemctl start "${name}"

	# Check, if the service was successfully started and
	# return a proper exit code.
	service_is_active "${name}"
	local ret=$?

	log INFO "Started service '${name}', code=${ret}."

	return ${ret}
}

service_stop() {
	local name="${1}"
	assert isset name

	systemctl stop "${name}"
}

service_restart() {
	local name="${1}"
	assert isset name

	systemctl restart "${name}"
}

service_reload() {
	local name="${1}"
	assert isset name

	if service_status "${name}"; then
		systemctl reload "${name}"
		return $?
	else
		log WARNING "Cannot reload service '${name}' which is currently not running."
	fi
}

service_status() {
	local name="${1}"
	assert isset name

	systemctl status "${name}" >/dev/null 2>&1
	return $?
}

# This function calls the "enable" command from systemd,
# to mark services to be automatically started during
# boot up.
service_enable() {
	local name="${1}"
	assert isset name

	systemctl enable "${name}" >/dev/null 2>&1
}

# This function calls the "disable" command of systemd,
# to drop the autostart ability of the service during the
# boot up.
service_disable() {
	local name="${1}"
	assert isset name

	systemctl disable "${name}" >/dev/null 2>&1
}

# This function uses the systemd command "is-enabled" to check,
# if a service has been enabled or not.
service_is_enabled() {
	local name="${1}"
	assert isset name

	systemctl is-enabled "${name}" >/dev/null 2>&1
	return $?
}

service_is_active() {
	local name="${1}"
	assert isset name

	systemctl is-active "${name}" >/dev/null 2>&1
	return $?
}

service_get_exitcode() {
	local name=${1}
	assert isset name

	local output=$(systemctl show "${name}" --property="ExecMainStatus")
	cli_get_val "${output}"
}