#!/bin/sh

COMMAND="${1:-help}"
NUM="${2:-5}"

# Uncomment the following line to use Pulseaudio.
# PULSE=true

if [ "$PULSE" ]; then
	toggle() { pulsemixer --toggle-mute ;}
	mute() { pulsemixer --mute ;}
	up() { pulsemixer --change-volume +"$NUM" ;}
	down() { pulsemixer --change-volume -"$NUM" ;}
	control() { pulsemixer ;}
else
	toggle() { amixer sset Master toggle ;}
	mute() { amixer sset Master mute ;}
	up() { amixer sset Master "$NUM"%+ ;}
	down() { amixer sset Master "$NUM"%- ;}
	control() { alsamixer ;}
fi

help() {
	echo "usage: lmc <command> [<num>]"
	echo "commands:"
	sed -n 's/^\s*\(\S*\)().*/- \1/p' "$0" | sort -u
}

type "$COMMAND" | grep function >/dev/null && "$COMMAND" \
	|| echo "lmc: command not defined: $COMMAND" >&2