#!/bin/sh

print_status() {
    volume_info=$(wpctl get-volume @DEFAULT_AUDIO_SINK@ 2>/dev/null)
    volume=$(printf '%s' "$volume_info" | awk '{printf "%d%%", $2 * 100}')
    printf '%s' "$volume_info" | grep -q MUTED && volume="muted"

    brightness=$(brightnessctl -m 2>/dev/null | awk -F, '{print $4}')

    battery_device=$(upower -e 2>/dev/null | grep -m 1 battery)
    if [ -n "$battery_device" ]; then
        battery=$(upower -i "$battery_device" 2>/dev/null | awk '
            /state/ { state=$2 }
            /percentage/ { percentage=$2 }
            END {
                if (percentage != "") {
                    printf "%s", percentage
                    if (state != "") printf " %s", state
                }
            }
        ')
    fi

    printf 'VOL %s | BRI %s | BAT %s | %s\n' "${volume:-n/a}" "${brightness:-n/a}" "${battery:-n/a}" "$(date +'%Y-%m-%d %H:%M:%S')"
}

trap print_status USR1

print_status
while :; do
    sleep 60 &
    wait $!
    print_status
done