#! /bin/sh
# Checks the battery, sends a notification depending on the level

notify() { \
	for x in /sys/class/power_supply/BAT?/capacity;
	do
	case "$(cat "$x")" in
		1[0-9])	notify-send -u "normal" "Battery is running low ($(cat "$x")%)" "Please plug your computer to a power source" ;;
		[0-9])	notify-send -u "critical" "Battery is dangerously low ($(cat "$x")%)" "Please plug your computer to a power source - <b>NOW!</b>" ;;
	esac
	done
	}

update() { \
	# We want the notification to be sent every 2 mins
	# But only if the computer is unplugged
	if [ "$(cat /sys/class/power_supply/AC/online)" = 0 ]; then
		notify && refbar
	fi
	wait
	}

while :; do
	update
	# Sleep for two minutes before sending another notification
	sleep 120 &
	wait
done