#!/bin/sh

# See https://superuser.com/questions/1675877/how-to-create-a-new-pipewire-virtual-device-that-to-combines-an-real-input-and-o

declare -A mapping
declare -A mappingDetach

# Map various audio outputs to be inputs to other sinks:
#
# Loopback Monitor   -\
#                      -> Combined Sink/Source -> Virtual Microphone -> Voice software
# rnnoise mic output -/
mapping+=(
	# Link loopback and mic to combined sink
	["loopback:monitor_FL"]="mixed-mic:input_FL"
	["loopback:monitor_FR"]="mixed-mic:input_FR"

	#["output\.filter-chain.*:capture_1"]="mixed-mic:input_FL"
	#["output\.filter-chain.*:capture_2"]="mixed-mic:input_FR"
	["output\.rnnoise_source:capture_1"]="mixed-mic:input_FL"
	["output\.rnnoise_source:capture_2"]="mixed-mic:input_FR"
	# Link combined sink to virtual mic
	#["combined-sink:monitor_FL"]="mixed-mic:input_FL"
	#["combined-sink:monitor_FR"]="mixed-mic:input_FR"
)

mappingDetach+=(
	["output\.rnnoise_source:capture_1"]="mixed-mic:input_FL"
	["output\.rnnoise_source:capture_2"]="mixed-mic:input_FR"
)

completed=false
tries=0

if [[ "$1" == "--disconnect" ]] || [[ "$1" == "-d" ]]; then
	for key in ${!mapping[@]}; do
		value=${mapping[${key}]}

		tmp=$(pw-link -o | grep -e ${key}) || break
		output=$(echo $tmp | head -n1)

		tmp=$(pw-link -i | grep -e ${value}) || break
		input=$(echo $tmp | head -n1)

		pw-link -d ${key} ${input} &> /dev/null
	done
	exit
fi

while not $completed && [ "$tries" -lt "20" ]; do
	for key in ${!mapping[@]}; do
		completed=false
		value=${mapping[${key}]}

		# Check if the outpts and inputs exist before trying to link them, otherwise causes issues.
		tmp=$(pw-link -o | grep -e ${key}) || break
		output=$(echo $tmp | head -n1)

		tmp=$(pw-link -i | grep -e ${value}) || break
		input=$(echo $tmp | head -n1)

		if [[ "$1" == "--disconnect-all" ]] || [[ "$1" == "-da" ]]; then
			pw-link -d ${output} ${input} &> /dev/null
		else
			pw-link ${output} ${input} &> /dev/null
		fi
		completed=true
	done
	sleep 1
	tries=$((tries+1))
done