#!/bin/bash

ZM_DEV1=192.168.xxx.xxx
ZM_DEV2=192.168.xxx.xxx
ZM_SENTRYFILE="/dev/shm/zmsentry"
ZM_HOMESTATE="YourHomeState"
ZM_AWAYSTATE="YourAwayState"

if [ ! -f $ZM_SENTRYFILE ]
then
	touch $ZM_SENTRYFILE
	ZM_STATE=""
else
	ZM_STATE=`cat $ZM_SENTRYFILE`
fi

function set_home() {
	if [ "$ZM_STATE" == "$ZM_HOMESTATE" ]
	then
		logger "[ZM SENTRY] State $ZM_STATE already set, do nothing..."
	else
		/usr/bin/zmpkg.pl $ZM_HOMESTATE
		logger "[ZM SENTRY] Switched ZoneMinder to $ZM_HOMESTATE mode"
		echo $ZM_HOMESTATE > $ZM_SENTRYFILE
	fi
}

function set_away() {
	if [ "$ZM_STATE" == "$ZM_AWAYSTATE" ]
	then
		logger "[ZM SENTRY] State $ZM_STATE already set, do nothing..."
	else
		/usr/bin/zmpkg.pl $ZM_AWAYSTATE
		logger "[ZM SENTRY] Switched ZoneMinder to $ZM_AWAYSTATE mode"
		echo $ZM_AWAYSTATE > $ZM_SENTRYFILE
	fi
}

logger "[ZM SENTRY] ZoneMinder Sentry checking devices"
ping -c 1 -W 2 $ZM_DEV1
if [ $? -eq 0 ]
then
	logger "[ZM SENTRY] Found Device 1"
	set_home
	exit 0
else
	ping -c 1 -W 2 $ZM_DEV2
	if [ $? -eq 0 ]
	then
		logger "[ZM SENTRY] Found Device 2"
		set_home
		exit 0
	else
		logger "[ZM SENTRY] No devices found"
		set_away
		exit 0
	fi
fi
exit 0