#!/bin/bash

# Check we have an input
if [ $# -eq 0 ]; then
	# No inputs given, display help ($0 is the scripts name)
	echo "Usage $0 delay"
	echo "e.g. $0 10 will time 10s then flash red"
else
	# Set on (green) and wait
	echo "020" > /dev/ledborg
	sleep $1

	# Flash red until user presses a key
	echo "Time's up!"
	echo "Press any key to finish"
	key=""
	while [ "$key" = "" ]; do
		# Set red and wait for 1 keypress (1 second timeout)
		echo "200" > /dev/ledborg
		read -n 1 -t 1 key

		# If no key was pressed set off and wait for 1 keypress (1 second timeout)
		if [ "$key" = "" ]; then
			echo "000" > /dev/ledborg
			read -n 1 -t 1 key
		fi
	done

	# Set off (we are now done)
	echo "000" > /dev/ledborg
fi