#!/bin/sh

if pacmd dump | grep -v monitor | grep -q '^set-source-mute .* no$'; then
  mute=yes
else
  mute=no
fi

pacmd dump | sed "/monitor/d;/^set-source-mute /!d;s/ \(no\|yes\)$/ $mute/" | pacmd

if [ "$mute" = "yes" ]; then
  notify-send -u normal -t 1000 muted
else
  notify-send -u critical -t 1000 UNMUTED
fi