helm/os/arch/bin/vol

#!/usr/bin/env bash

if (($# == 0)); then
    data=$(amixer get Master)
    vol=$(echo "$data" | sed -n 's/^.*\[\([0-9]\+\)%.*$/\1/p' | uniq)
    state=$(echo "$data" | grep '\[on\]')
    [[ $state ]] && echo $vol || echo 0
    exit
fi

case $1 in
    [0-9]*) amixer set Master $1 ;;
    [+-])   amixer set Master 10%$1 ;;
    *mute)  amixer set Master $1 ;;
    toggle) amixer set Master toggle ;;
    *)  >&2 echo "Invalid command"
        exit 1
        ;;
esac

killall -9 -q osd_cat &>/dev/null
osd_cat --font="10x20" --delay=2 --color=white --align=center --pos=bottom --barmode=percentage --percentage $($0) &

# Report to lemonbar, if active
$HOME/.config/panel/panel-notify :volume