#!/bin/bash

FUNCTIONS=$HOME/bin/functions.sh
[ -e $FUNCTIONS ] || exit 1
. $FUNCTIONS

LED=/sys/class/leds/0003:17EF:6009.0004:amber:mute/brightness

function increase_volume()
{
  mute amixer sset Master 10%+
}

function decrease_volume()
{
  mute amixer sset Master 10%-
}

function toggle_volume()
{
  state=$(amixer sget Master | grep -o '\[o[n|f]*\]' | head -n 1)
  case "$state" in
    "[on]")
      mute amixer sset Master mute
      mute amixer sset Headphone mute
      mute amixer sset Speaker mute
      echo 1 > $LED
    ;;
    "[off]")
      mute amixer sset Master unmute
      mute amixer sset Headphone unmute
      mute amixer sset Speaker unmute
      echo 0 > $LED
    ;;
  esac
}

case "$1" in
  increase)
    increase_volume
    ;;
  decrease)
    decrease_volume
    ;;
  toggle)
    toggle_volume
    ;;
  *)
    ;;
esac