#! /bin/bash

SUBDOMAIN=""
DOMAIN=""
PORT=""
FILENAME="/etc/haproxy/haproxy.cfg"

usage(){
cat << EOF
usage: update-ipv6 [OPTIONS] -s subdomain [-d domain_name] -p port

Description

haproxy-util allows to add and modify redirection rules on haproxy 	
Options:
 TBD
EOF
exit 1
  
}

if [[ $# -lt 4 ]] ; 
then
  usage
fi

while [[ ! -z "$1" ]]; do
	case $1 in
		-s) 
			SUBDOMAIN=$2
			shift 2;;
		-d) 
			DOMAIN=$2
			shift 2;;
		-p)	
			PORT=$2
			shift 2;;
		*)
			echo $option
			usage;;
	esac
done

if [[ -z "$SUBDOMAIN" ]] ; 
then
  usage
fi

#if [[ -z "$DOMAIN" ]] ; 
#then
  #usage
#fi

if [[ -z "$PORT" ]] ; 
then
  usage
fi

if [[ -n $(grep " $SUBDOMAIN" $FILENAME) ]] ;
then 
	echo "ERROR: Subdomain already on use"
	exit 1
fi

if [[ -n $(grep "$PORT" $FILENAME) ]] ;
then 
	echo "Error: Port already on use"
	exit 1
fi


servername=$SUBDOMAIN"_server"
                sudo sed -i "s/#ACL Definition/#ACL Definition\n\tacl host_$SUBDOMAIN    hdr_beg(host) -i $SUBDOMAIN/" $FILENAME 
                sudo sed -i "s/#USE_BACKEND Definition/#USE_BACKEND Definition\n\tuse_backend $SUBDOMAIN  if host_$SUBDOMAIN/" $FILENAME 
                sudo sed -i "s/#BACKEND Definition/#BACKEND Definition\nbackend $SUBDOMAIN\n\toption forwardfor\n\tserver $servername localhost:$PORT/" $FILENAME 
		sudo systemctl restart haproxy
	


		


        #ACL Definition
        #USE_BACKEND Definition




#BACKED Definition