#!/bin/sh

# sometimes AC or Battery driver is broken. First be sure in Battery driver [health]
ac=false
for i in /sys/class/power_supply/*; do
	[ -e "$i/online" ] && [ "$(cat "$i/online")" = 1 ] && ac=true
	[ -e "$i/present" ] && [ "$(cat "$i/present")" = 1 -a "$(cat "$i/type")" = Battery -a "$(cat "$i/capacity")" != 0 ] || continue
	case "$(cat "$i/status")" in
	Discharging|Critical)exit 0;;
	Unknown|Charging|Full)exit 1;;
	esac
done
$ac && exit 1
grep -sq "state:.*off-line" /proc/acpi/ac_adapter/*/state || grep -sq "AC Power.*: 0" /proc/pmu/info