#!/bin/bash -e

TIMEOUT=20
PIDFILE=/var/run/autox.pid

if [ -z "$1" ]; then
	echo "Usage: $0 <username>" 1>&2
	exit 1
fi

echo $$ > $PIDFILE
trap "rm -f $PIDFILE; killall -9 startx" 0
fails=0
  
while true; do
	start_time=`date "+%s"`
	openvt -w -- su -c startx $1
	end_time=`date "+%s"`

	timediff=$((end_time-start_time))
	if [ $timediff -lt $TIMEOUT ]; then
		fails=$((fails+1))
	else
		fails=0
	fi

	if [ $fails -gt 2 ]; then
		echo "Unable to start X, giving up."
		exit 1
	fi
done

exit 0