#!/usr/bin/env bash
export LC_ALL=POSIX LANG=POSIX; . "${HOME}/.owl4ce_var"

type -p amixer &>/dev/null || exec echo 'Install alsa-utils!'

VOLUME="$(amixer get Master | grep -oP '\[\K[^%\]]+' | sed 1q)"

icon()
{
    if [ "$VOLUME" -eq 0 ]; then
        icon=''
    elif [ "$VOLUME" -lt 30 ]; then
        icon=''
    elif [ "$VOLUME" -lt 70 ]; then
        icon=''
    else
        icon=''
    fi
    exec echo "$icon"
}

case ${1} in
    percent) if amixer get Master | grep -Fqo 'off'; then
                 exec echo 'Muted'
             else
                 exec echo "${VOLUME}%"
             fi
    ;;
    icon)    if amixer get Master | grep -Fqo 'off'; then
                 exec echo ""
             else
                 icon
             fi
    ;;
    up)      amixer set Master on -q
             exec amixer sset Master "${AUDIO_STEPS:-5}%+" -q
    ;;
    down)    amixer set Master on -q
             exec amixer sset Master "${AUDIO_STEPS:-5}%-" -q
    ;;
    mute)    exec amixer set Master 1+ toggle -q
    ;;
esac

exit ${?}