#!/sbin/openrc-run
# Copyright 2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

description="Prometheus exporter for FRITZ!Box Smart Home"

EXPORTER_FLAGS=${EXPORTER_FLAGS:-""}
EXPORTER_USER=${EXPORTER_USER:-"fritzbox_smarthome_exporter"}
EXPORTER_GROUP=${EXPORTER_GROUP:-"fritzbox_smarthome_exporter"}
EXPORTER_PIDFILE=${EXPORTER_PIDFILE:-"/run/${RC_SVCNAME}.pid"}
EXPORTER_SSDARGS=${EXPORTER_SSDARGS:-"--wait 1000"}
EXPORTER_TERMTIMEOUT=${EXPORTER_TERMTIMEOUT:-"TERM/60/KILL/5"}

command="/usr/bin/fritzbox_smarthome_exporter"
command_args="${EXPORTER_FLAGS}"
command_background="true"
start_stop_daemon_args="${EXPORTER_SSDARGS}"
start_stop_daemon_args="${start_stop_daemon_args} --user ${EXPORTER_USER}"
start_stop_daemon_args="${start_stop_daemon_args} --group ${EXPORTER_GROUP}"

start_stop_daemon_args="${start_stop_daemon_args} --stdout /var/log/fritzbox_smarthome_exporter/${RC_SVCNAME}.log"
start_stop_daemon_args="${start_stop_daemon_args} --stderr /var/log/fritzbox_smarthome_exporter/${RC_SVCNAME}.log"

getconfig() {
	local key="$1"
	local value_default="$2"
	local value=

	if service_started; then
		value="$(service_get_value "${key}")"
	fi

	if [ -z "${value}" ]; then
		# Value not explicitly set
		echo "${value_default}"
	else
		echo "${value}"
	fi
}

pidfile="$(getconfig pidfile ${EXPORTER_PIDFILE})"
retry="$(getconfig retry ${EXPORTER_TERMTIMEOUT})"

depend() {
	after net
	use dns
}

start_pre() {
	if [ -n "${FRITZBOX_USERNAME}" ] && [ -n "${FRITZBOX_PASSWORD}" ] ; then
		export USERNAME="${FRITZBOX_USERNAME}"
		export PASSWORD="${FRITZBOX_PASSWORD}"
	fi
}

start_post() {
	service_set_value retry "${EXPORTER_TERMTIMEOUT}"
}