#!/bin/bash

# listen to acpi events and handle them
# for now assumes user is in x env and has notification system
# a bit of a hello world

coproc acpi_listen
trap 'kill $COPROC_PID' EXIT

while read -u ${COPROC[0]} -a event; do
    if [ "${event[0]}" = 'button/mute' ]
    then
    amixer set Master toggle
        sound_state=$(amixer get Master | grep -oE "\[on\]|\[off\]")
    case $sound_state in
        "[on]")
        notify-send "Sound is on."
        ;;
        "[off]")
        notify-send "Sound is off."
        ;;
        *)
        notify-send "Master Channel entered unkown state."
        ;;
    esac
    fi
    if [ "${event[0]} = 'button/volumedown'" ]
    then
    amixer sset Master 5%- ummute
    volume=$(amixer get Master | grep Mono | cut -c22-24)
    notify-send "Sound: $volume"
    fi
    if [ "${event[0]} = 'button/volumeup'" ]
    then
    amixer sset Master 5%+ ummute
    volume=$(amixer get Master | grep Mono | cut -c22-24)
    notify-send "Sound: $volume"
    fi
done