#!/usr/bin/env bash
level() {
    busctl --system get-property org.freedesktop.UPower /org/freedesktop/UPower/devices/battery_BAT0 org.freedesktop.UPower.Device Percentage | sed "s/d //"
}

icon-name() {
    busctl --system get-property org.freedesktop.UPower /org/freedesktop/UPower/devices/battery_BAT0 org.freedesktop.UPower.Device IconName | sed -E "s/(s )|\"//g"
}

if [ "$1" = "check" ]; then
    echo $(level)%
    exit
fi

while true; do
    icon_name=$(icon-name)
    if echo $icon_name | grep -qv charging && echo $icon_name | grep -q caution; then
        ffplay /usr/share/sounds/freedesktop/stereo/dialog-warning.oga -autoexit -nodisp -hide_banner -v -8 >&- 2>&-
    fi
    sleep 30
done