dotfiles/i3/battery.sh
2018-05-29 12:26:09 +02:00

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#!/bin/bash
# Legacy battery monitor. I'm writing a better one, I should publish it some
# time.
level_critical=5
level_low=10
level_low_max_backlight=8
notif(){
notify-send -a "Battery" "$@"
}
lower_backlight() {
[ $(xbacklight -get) -le $level_low_max_backlight ] || xbacklight -set $(level_low_max_backlight)
}
while true; do
now=$(cat /sys/class/power_supply/BAT0/energy_now 2>/dev/null)
full=$(cat /sys/class/power_supply/BAT0/energy_full 2>/dev/null)
if [ ! -z $now ] && [ ! -z $full ]; then
percentage=$(( 100 * now / full ))
echo "Current level: $percentage"
if [[ "$(cat /sys/class/power_supply/BAT0/status 2>/dev/null)" != "Charging" ]]; then
if [ $percentage -lt $level_critical ]; then
notif -u "critical" "Power level critical" "Less than $percentage% remaining."
lower_backlight
elif [ $percentage -lt $level_low ]; then
notif -t 59000 -u "critical" "Power supplies running low" "Less than $percentage% remaining."
lower_backlight
fi
else
if [ $percentage -ge 98 ]; then
notif -t 10000 -u low "Fully charged" "Unplug charger."
fi
fi
fi
sleep '1m'
done