#!/bin/sh

# openvpn settings
SERVER="192.168.100.199"
PORT="1194"

# helpers
CLI="/usr/local/sbin/cli"
LOG="/usr/bin/logger -p local1.notice -t maintenance"

#some variables
OpenVPNConfFile=/etc/openvpn/tunnel0.conf
remoteLine="$(grep '^remote' "$OpenVPNConfFile")"
currentIP=$(echo "$remoteLine" | cut -d' ' -f 2)
currentPort=$(echo "$remoteLine" | cut -d' ' -f 3)

$LOG "running"

# make bottom led blinking in red
# echo "timer" > "/sys/class/leds/ind4:red/trigger"
# echo "500"   > "/sys/class/leds/ind4:red/delay_on"
# echo "500"   > "/sys/class/leds/ind4:red/delay_off"




# turn on solid red for bottom led (labelled IN2)
echo "1" > "/sys/class/leds/ind4:red/brightness"
echo "1" > "/sys/class/leds/ind4:green/brightness"

if [ $SERVER = $currentIP -a $PORT = $currentPort ]
then
	$LOG "openvpn is the same as the config on the usb. exiting..."
	echo "0" > "/sys/class/leds/ind4:red/brightness"
        echo "0" > "/sys/class/leds/ind4:green/brightness"
	exit 0
	
else


	# reconfigure openvpn
	$LOG "changing openvpn config (server=$SERVER, port=$PORT)"

	# $CLI set "openvpn.tunnel.0.server=$SERVER" "openvpn.tunnel.0.port=$PORT" || $LOG "unable to change config"

	sed -i "s/^remote.*/remote $SERVER $PORT/g" /etc/openvpn/tunnel0.conf

	# wait a bit
	sleep 3

	# restart openvpn
	$CLI restart "openvpn"

	# turn off bottom led again
	sleep 3
	echo "0" > "/sys/class/leds/ind4:red/brightness"
	echo "0" > "/sys/class/leds/ind4:green/brightness"

	$LOG "finished"

	exit 0

fi