#!/usr/bin/env bash
# @Author: iago

state=waiting_for_sunshine
sleep_time=1

default_device="alsa_output.usb-C-Media_Electronics_Inc._USB_Audio_Device-00.analog-stereo"
default_device_fl=":monitor_FL"
default_device_fr=":monitor_FR"
obs_device="OBS: audioOutput_Discordless"
obs_device_fl=":monitor_FL"
obs_device_fr=":monitor_FR"
sunshine_device="sunshine"
sunshine_device_fl=":input_FL"
sunshine_device_fr=":input_FR"

is_sunshine_transmitting() {
  pw-link -l | grep sunshine >/dev/null
}

do_device_setup() {
  # trocar dispositivo padrão
  pactl set-default-sink "$default_device"
  sleep 3
  # conectar dispositivo virtual do OBS
  pw-link "$obs_device$obs_device_fl" "$sunshine_device$sunshine_device_fl"
  pw-link "$obs_device$obs_device_fr" "$sunshine_device$sunshine_device_fr"
  # talvez desconectar a saída do seu fone do sunshine?
  sleep 5
  pw-link -d "$default_device$default_device_fl" "$sunshine_device$sunshine_device_fl"
  pw-link -d "$default_device$default_device_fr" "$sunshine_device$sunshine_device_fr"
}

while true; do
  if [ "$state" = "waiting_for_sunshine" ]; then
    if is_sunshine_transmitting; then
      state=do_sunshine_setup
    fi
  elif [ "$state" = "do_sunshine_setup" ]; then
    do_device_setup
    state=sunshine_running
  elif [ "$state" = "sunshine_running" ]; then
    if ! is_sunshine_transmitting; then
      state=sunshine_not_transmitting
    fi
  elif [ "$state" = "sunshine_not_transmitting" ]; then
    state=waiting_for_sunshine
  fi
  sleep "$sleep_time"
done