autosusp

#!/bin/bash

#set -x

dir=/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:19/PNP0C09:01/PNP0C0A:03/power_supply/BAT0
full=$(cat $dir/energy_full)
now=$(cat $dir/energy_now)
status=$(cat $dir/status)
percent=$((100 * now / full))
alarm_threshold=10
action_threshold=5
action_command=s2ram

case $status in
    Charging)
        ;;
    Discharging)
        if [[ -n $1 ]]; then
            alarm_threshold=$1
        fi

        if [[ -n $2 ]]; then
            action_threshold=$2
        fi

        if [[ -n $3 ]]; then
            action_command=$3
        fi

        if [[ $alarm_threshold -ge $percent ]]; then
            notify-send -u critical -t 10000 -- "WARNING: Battery charge is LOW"
            ffplay -f lavfi -i "sine=frequency=440:duration=500ms" -ac 2 -autoexit -nodisp
            espeak -v en-us "warning. Battery charge is low"
            ffplay -f lavfi -i "sine=frequency=440:duration=500ms" -ac 2 -autoexit -nodisp
        fi

        if [[ $action_threshold -ge $percent ]]; then
            $(sudo $action_command)
        fi
        ;;
esac