#!/bin/bash

if [ "$#" -eq 0 ]
then
	echo "Requires a command. Run with 'help' for a list of commands."
	exit 1
fi
if [ "$#" -gt 1 ]
then
	echo "Too many arguments. Run with 'help' for a list of commands."
	exit 1
fi

case $1 in
	"mute")
		pactl set-sink-mute 0 toggle
		pactl list sinks | awk '/Mute/ { if ($2 == "no") print "VOL"; else print "MUT"; }'
		;;
	"vol-up")
		pactl set-sink-volume 0 +5%
		pactl list sinks | grep '^[[:space:]]Volume:' | head -n $(( $SINK + 1  )) | tail -n 1 | sed -e 's,.* \([0-9][0-9]*\)%.*,\1,'
		;;
	"vol-down")
		pactl set-sink-volume 0 -5%
		pactl list sinks | grep '^[[:space:]]Volume:' | head -n $(( $SINK + 1  )) | tail -n 1 | sed -e 's,.* \([0-9][0-9]*\)%.*,\1,'
		;;
	"reset")
		pactl set-sink-volume 0 50%
		pactl list sinks | grep '^[[:space:]]Volume:' | head -n $(( $SINK + 1  )) | tail -n 1 | sed -e 's,.* \([0-9][0-9]*\)%.*,\1,'
		;;
	"help")
		echo "USAGE: audio-control <command>

Commands:
	mute          toggle mute
	vol-up        raise the volume
	vol-down      lower the volume
	reset         reset volume (to round number)
	toggle-port   toggle the output port
	help          show this help information";;
	*)
		echo "Invalid command. Run with 'help' for a list of commands."
		exit 1;;
esac