#!/bin/sh /etc/rc.common

START=60
STOP=50

USE_PROCD=1

vnstat_option() {
	sed -ne "s/^[[:space:]]*$1[[:space:]]*['\"]\([^'\"]*\)['\"].*/\1/p" \
		/etc/vnstat.conf
}

init_database() {
	local lib database_count

	lib="$(vnstat_option DatabaseDir)"
	[ -n "$lib" ] || lib="/var/lib/vnstat"

	database_count="$(ls "$lib" 2>/dev/null | wc -l)"

	# only init database when folder is empty, as it would prevent import of legacy databases
	if [ "$database_count" -eq "0" ]; then
		/usr/sbin/vnstatd --initdb >/dev/null
	else
		# if vnstat.db doesn't exist, there are legacy databases to import
		[ ! -f "$lib/vnstat.db" ] && echo -n "1"
	fi
}

init_ifaces() {
	local cfg="$1"

	init_iface() {
		local ifn="$1"

		/usr/bin/vnstat --add -i "$ifn" >/dev/null
	}

	config_list_foreach "$cfg" interface init_iface
}

start_service() {
	local options needs_import

	needs_import="$(init_database)"

	# --noadd would prevent import of legacy databases
	[ -z "$needs_import" ] && options="--noadd --noexit"

	config_load vnstat
	config_foreach init_ifaces vnstat

	procd_open_instance
	procd_set_param stdout 1
	procd_set_param stderr 1
	procd_set_param command /usr/sbin/vnstatd --nodaemon $options
	procd_set_param file /etc/vnstat.conf
	procd_set_param respawn
	procd_close_instance
}

reload_service() {
	config_load vnstat
	config_foreach init_ifaces vnstat

	procd_send_signal vnstat
}

service_triggers() {
	procd_add_reload_trigger vnstat
}