#/bin/sh


list_of_sinks_to_toggle=("alsa_output.usb-HP__Inc_HyperX_Cloud_Alpha_Wireless_00000001-00.analog-stereo"
                         "bluez_output.90_F2_60_64_1E_12.1")

get_current_sink() {
 pactl get-default-sink
}

is_bluetooth_speaker_connected() {
  pactl list sinks | grep "Name:" | awk -F ' ' '{print $2}' | grep --color=never "bluez_output.90_F2_60_64_1E_12.1"
}

pre_change_command() {
  if [ $1 == "bluez_output.90_F2_60_64_1E_12.1" ]
  then
    if [ -z $(is_bluetooth_speaker_connected) ]
    then
      notify-send "Speaker Toggler" "Connecting bluetooth speakers"
      bluetoothctl connect 90:F2:60:64:1E:12 > /dev/null 2>&1 
      status=$?
      if [ $? -ne 0 ]
      then
        notify-send "Speaker Toggler" "Could not connect bluetooth speaker\nMaybe it is not turned on?"
        exit 1
      fi
      while [ -z $(is_bluetooth_speaker_connected) ]
      do
        sleep 0.05
      done
    fi
  fi
}

current_sink=$(get_current_sink)

index=-1;
for i in "${!list_of_sinks_to_toggle[@]}" 
do
  if [ "${list_of_sinks_to_toggle[$i]}" == "$current_sink" ]
  then
    index=$i
  fi
done

if [ $index == -1 ]
then
  echo "err: current sink not found in cycle"
fi

next_index=$(((index + 1) % ${#list_of_sinks_to_toggle[@]} ))

next_sink=${list_of_sinks_to_toggle[$next_index]}
pre_change_command $next_sink 
pactl set-default-sink $next_sink