#!/bin/bash
ip_4=$(curl -m 120 -w '\n' -sfL 'api{4}.ipify.org')
#echo $ip_4
	ping -c1 $ip_4 &>"/dev/null"

	if [[ "${?}" -ne 0 ]]; then
		echo "$ip_4 offline. Take action?"
		IPV4_ADDRESS=$(dig whoami.cloudflare ch txt @1.1.1.1 +short | awk -F'"' '{print $2}')
		#echo $IPV4_ADDRESS
		ping -c1 $IPV4_ADDRESS &>"/dev/null"

		if [[ "${?}" -ne 0 ]]; then
			echo "$IPV4_ADDRESS offline. Take action?"
		elif [[ "${#args[@]}" -eq 0 ]]; then
			#echo "$IPV4_ADDRESS online"
			IPV4_ADD=$IPV4_ADDRESS
		fi
	elif [[ "${#args[@]}" -eq 0 ]]; then
		#echo "ip_4 online $ip_4"
		IPV4_ADD=$ip_4
	fi

	if [[ -n "${IPV4_ADD}" ]]; then
		#echo $IPV4_ADD

		if : >/dev/tcp/8.8.8.8/53; then
			#echo "$DATE wee are on internet"
			FREEDNS_DOMAIN_0=doorbell.doordk.com
			FREEDNS_DOMAINHASHKEY_0=NEp1d2VnZTRsbXNaRzB5dkdIb0tEZ0IxOjIwNjQzODQ5
			registered_ip_0=$(host -t A doorbell.doordk.com  | awk '{print $4}' | cut -d/ -f1)
            #registered_ip_0=$(ping -qn -c 1 $FREEDNS_DOMAIN_0 | head -n 1 | grep -o '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}')
			#registered_ip_0=$(curl --silent "https://freedns.afraid.org/dynamic/update.php?$FREEDNS_DOMAINHASHKEY_0"  | grep -o '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}')
			UPDATE_URL_0="http://freedns.afraid.org/dynamic/update.php?$FREEDNS_DOMAINHASHKEY_0&address=$IPV4_ADD"
			#echo "$DATE wee  are on internet IPv4 $IPV4_ADD. Freedns reg ip addresse: $registered_ip_0"
			#

			if [ "$IPV4_ADD" != "$registered_ip_0" ]; then
				echo "$DATE $FREEDNS_DOMAIN_0 Update from $registered_ip_0 to $IPV4_ADD"
				wget -q --read-timeout=0.0 --waitretry=5 --tries=400 --background $UPDATE_URL_0
			fi
		else
			echo "$DATE IPV4 wee are NOT on internet. Take action?"
		fi
	fi