#!/bin/bash

CONFIG=/etc/nginx/sites-available/$1
DOMAIN=$2

IP=$(dig $DOMAIN +short)
IP_OLD=$(grep -A0 '#DYNAMIC' $CONFIG | awk '{print $2}' | cut -f1 -d ';')

if [ "$IP" != "$IP_OLD" ]
then
	NGINX_STATUS=$(nginx -t 2>&1 | tail -n 1 | awk '{print $7}')
	if [ "$NGINX_STATUS" = "successful" ]
	then
		sed -i "s/$IP_OLD/$IP/" $CONFIG
		systemctl restart nginx
	else
		echo nginx test failed
	fi
else
	echo IP IS SAME
fi