#!/bin/bash

targetHostname="$1"
timeOut="$2"

if test -z "$targetHostname" ; then 
	echo "ERROR: No hostname given."
	echo "Usage: $0 fqdn timeOutSeconds"
	exit -1
fi

if test -z "$timeOut" ; then 
	timeOut=60
fi

for seconds in $(seq $timeOut -1 1) ; do
	systemd-resolve --flush-caches
	if host "$targetHostname" 1>/dev/null 2>&1 ; then
		if ping -c1 -w1 "$targetHostname" 1>/dev/null 2>&1 ; then
			break
		else
			#echo "${seconds}s left"
			continue
		fi
	else
		#echo "${seconds}s left"
		sleep 1
	fi
done

if test $seconds -gt 1 ; then
	true
else
	false
fi