#!/bin/bash

## Temp files
#############
DCTIMES_TEMPFILE="$(mktemp /tmp/debconftemp.XXXXXXX)"

## Global Variables
###################
DOMAIN="" # AD Domain Name
DCLIST="" # Ordered DC list for AD by time access
DOMAINJOIN_CLI="/opt/pbis/bin/domainjoin-cli"
GET_DCLIST="/opt/pbis/bin/get-dc-list"

order_ping_to_dccontrollers(){
	if [ -x $GET_DCLIST ];
	then
		RESULT=$($GET_DCLIST $DOMAIN | grep ^DC | cut -d\' -f4)
		for x in $RESULT;
		do
			PINGRESULT=$(ping -c2 $x -i0.25 -q | grep ^rtt | cut -d/ -f6)
			if [ -n $PINGRESULT ];
			then
				echo $PINGRESULT\t$x >> $DCTIMES_TEMPFILE 
			fi
		done
		RESULT=$(sort -n -t\t $DCTIMES_TEMPFILE | cut -d\t -f2)
		for x in $RESULT;
		do
			DCLIST=$DCLIST' '$x
		done
	fi

}

test_domain_status(){
	# Domain member?
        if [ -x $DOMAINJOIN_CLI ];
	then
		RESULT=$($DOMAINJOIN_CLI query | grep ^Domain | cut -d= -f 2)
		if [ -n $RESULT ];
		then
			# Computer domain member
			DOMAIN=$RESULT
			order_ping_to_dccontrollers
		fi
	fi
			
}

test_domain_status
if [ -n $DOMAIN ];
then
        # CREATE THE TOKEN #
        ####################

        mkdir -p /usr/share/lliurex-gva/
        touch /usr/share/lliurex-gva/joined
        date > /usr/share/lliurex-gva/joined

	if [ -n "$DCLIST" ];
	then
		ntpdate $DCLIST
	fi
else

    [ ! -f /usr/share/lliurex-gva/joined ] || rm -f /usr/share/lliurex-gva/joined

fi

rm -f $DCTIMES_TEMPFILE

exit 0