#!/bin/sh

set_output() {
  sel_sink=$(printf "$sinks" | dmenu -l 10 -i -p "sink")
  pactl set-default-sink $(pactl list sinks | grep -B 1 "$sel_sink" | awk -F':' '/Name:/ {print $2}')
  kill -46 $(pidof dwmblocks)
}

set_input() {
  sel_source=$(printf "$sources" | dmenu -l 10 -i -p "source")
  pactl set-default-source $(pactl list sources | grep -B 1 "$sel_source" | awk -F':' '/Name:/ {print $2}')
  kill -46 $(pidof dwmblocks)
}

sinks=$(pactl list sinks | awk -F':' '/Description:/ {print $2}')
sources=$(pactl list sources | grep -v 'Monitor of ' | awk -F':' '/Description:/ {print $2}')
[ "$(echo "$sinks" | wc -l)" -lt 2 ] &&
  { notify-send "🔊 Nothing to switch to."; exit; }

chosen=$(printf "output\\ninput" | dmenu -i -p "change")
case "$chosen" in
  output) set_output ;;
  input)  set_input ;;
  *)      exit 1 ;;
esac