#!/bin/bash
#Variablen
while [ true ] ; do
supernode_off () {
    $BATCTL gw off
	/usr/sbin/service bird6 stop
	/usr/sbin/service bird stop
	/usr/sbin/service tunneldigger stop
	/usr/sbin/service radvd stop
	echo "Active Supernode is running"
}

supernode_on () {
	$BATCTL gw server 100Mbit/100Mbit
    /usr/sbin/service bird6 start
    /usr/sbin/service bird start
    /usr/sbin/service tunneldigger start
    /usr/sbin/service radvd start
	}

supernode_fail () {
	$BATCTL gw off
	/usr/sbin/service bird6 restart
	/usr/sbin/service bird restart
	/usr/sbin/service tunneldigger restart
	/usr/sbin/service radvd restart
	echo "Supernode nicht pingbar"	
}

iam=$(/bin/hostname)
BATCTL=/usr/local/sbin/batctl
SN1=troisdorf5
SN2=troisdorf6
if [ $iam == troisdorf5 ]
then
	my_SN_IP=185.66.193.105
	other_SN_IP=185.66.193.106
else
	my_SN_IP=185.66.193.106
	other_SN_IP=185.66.193.105
fi
#Auf 1 setzen um Lastverteilung 1/2 Monat einzuschalten
loadbalance=1
#Default Supernode if loadbalance=0
active_SN=$SN2
day=$(date +%d)
if [ $loadbalance == 1 ] 
then
	if [ $day -gt 15 ] 
	then
		active_SN=$SN1
	fi
fi
#Check other Supernode
if [ $iam != $active_SN ] 
then
	ping -q -c5 $other_SN_IP -I eth0 > /dev/null
	if [ $? -eq 0 ] 
	then
    	supernode_off
	else
		supernode_on
		echo "First Supernode not running!"
		curl -X POST --data-urlencode 'payload={"text": "Aktiver Supernode nicht pingbar. {{ sn_hostname }} eingeschaltet", "channel": "#technik", "username": "{{ sn_hostname }}", "icon_emoji": ":warning:"}' https://hooks.slack.com/services/{{ slack_token }}
		sleep 900
	fi
else
	# Check this Supernode
	ping -q -c5 $my_SN_IP -I eth0 > /dev/null
	if [ $? -eq 0 ] 
	then
	    echo "Supernode ok"
		supernode_on
	else
		echo "Supernode nicht pingbar"
		supernode_fail
		curl -X POST --data-urlencode 'payload={"text": "{{ sn_hostname }} nicht pingbar. services auf {{ sn_hostname }} neu gestartet", "channel": "#technik", "username": "{{ sn_hostname }}", "icon_emoji": ":warning:"}' https://hooks.slack.com/services/{{ slack_token }}
	fi
fi
sleep 60
done