#!/bin/bash
# pw-mute-active-window: 2024 Christian Birchinger <cbirchinger@netswarm.net>
#
# Mute the active (X11) window applications incl. terminal programs with Pipewire.
# Mostly usefull as a global hotkey. The initial idea was to do this for sink
# switching, but wpcli or similar tools don't have this option for PIDs, so more
# manual pw-dump and json magic would be required.
#

function getpids() {
	echo "${wpid}"
	cpids=$(pgrep -P "$1" | xargs)
	for cpid in ${cpids};	do
		echo "$cpid"
		${FUNCNAME[0]} "${cpid}"
	done
}

wid=$(xdotool getwindowfocus)
wprop=$(xprop -id "${wid}")
wpid=$(grep '^_NET_WM_PID' <<< "${wprop}" | grep -oE '[[:digit:]]*$')

mapfile -t pids <<< "$(getpids "${wpid}")"

for p in "${pids[@]}"; do
	wpctl set-mute --pid "${p}" toggle
done