dotfiles/hm/desktop/batteryNotify.sh

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BATT="/sys/class/power_supply/BAT0"
LOW=10
CRIT=3
LASTSTATE="$HOME/.cache/batteryState"
function setState() { # state [...notify-send arguments]
state="$1"
last="$(cat "$LASTSTATE" 2> /dev/null)"
shift
echo "Battery state: $state"
if [ "$state" != "$last" ]
then
notify-send "$@"
echo "$state" > "$LASTSTATE"
fi
}
function computeState() {
acpiStatus="$(cat "$BATT/status")"
acpiCapacity="$(cat "$BATT/capacity")"
if [ "$acpiStatus" == "Discharging" ]
then
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if [ "$acpiCapacity" -le $CRIT ]
then
setState "CRIT" -u critical -i battery-caution "Battery level is critical" "$acpiCapacity %"
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elif [ "$acpiCapacity" -le $LOW ]
then
setState "LOW" -u critical -i battery-low "Battery level is low" "$acpiCapacity %"
else
setState "DISCHARGING" -i battery-good "Battery is discharging" "$acpiCapacity %"
fi
elif [ "$acpiStatus" == "Charging" ]
then
setState "CHARGING" -u normal -i battery-good-charging "Battery is charging" "$acpiCapacity %"
elif [ "$acpiStatus" == "Full" ]
then
setState "FULL" -u low -i battery-full-charged "Battery is full" "$acpiCapacity %"
fi
}
if [ "$1" == "-d" ]
then
while true
do
computeState
sleep 10
done
else
computeState
fi