Pipewire default sink (output) switching (Pulseaudio pactl)

pipewire-out-default-switch.sh

#! /usr/bin/env sh

# Removing pulseaudio means removing pacmd, so this is an attempt at switching the default via pactl instead.
# It successfully sets the default - BUT it appears my programs don't go to that default for some reason?

# Unlike the other scripts where sinks are specified, this just switches between whatever sinks exist.
# Sinks can be specified by name or index. Index changes sometimes when you disconnect and reconnect, restart or whatever, so names are better.
# Annoyingly the command used to switch audio over to a new sink cannot take a name as its argument, otherwise I'd only need the name here.

# TODO: Trigger a zenity or dmenu dialog with entr that asks whether to switch monitor and/or sound to hdmi? Could do
# the same for mounting.

# Names, which unlike indexes, are persistent

get_all_sinks() {
  pactl list short sinks | cut -f 2
}

get_default_sink() {
  #pw-play --list-targets | grep \* | tail -n 1 | cut -d' ' -f 2 | cut -d : -f 1
  pactl info | grep 'Default Sink' | cut -d':' -f 2
}

DEF_SINK=$(get_default_sink)
for SINK in $(get_all_sinks) ; do
  [ -z "$FIRST" ] && FIRST=$SINK # Save the first index in case the current default is the last in the list
  # get_default_sink currently returns the index with a leading space
  if [ " $SINK" = "$DEF_SINK" ]; then
    NEXT=1;
  # Subsequent pass, don't need continue above
  elif [ -n "$NEXT"  ]; then
    NEW_DEFAULT_SINK=$SINK
    break
  fi
done

# Don't particularly like this method of making it circular, but...
[ -z "$NEW_DEFAULT_SINK" ] && NEW_DEFAULT_SINK=$FIRST;

# Set default sink for new audio playback
pactl set-default-sink "$NEW_DEFAULT_SINK"

#SCRIPT_DIR=$(dirname "$(readlink -f "$0")")

#notify-send --expire-time 1350 "Switched default output sink to: $($SCRIPT_DIR/print-default-sink.sh)"

# Switch all currently running audio streams over to the newly selected sink, via the script I found
# TODO: I think the below might need the index, not the name!:
# "$SCRIPT_DIR"/pipe-out-sink-switch-realtime.sh $NEW_DEFAULT_SINK