#!/bin/bash

SINKS=$(pacmd list-sinks)
DEVICE="bluez_card.04_52_C7_C0_ED_BE"
IFS=$'\r'

case $(echo "$SINKS" | grep 'bluetooth.protocol' | awk '{print $3}') in
        "\"a2dp_sink\"") pacmd set-card-profile $DEVICE headset_head_unit 1>/dev/null 2>&1
                ;;  
        "\"headset_head_unit\"") pacmd set-card-profile $DEVICE a2dp_sink 1>/dev/null 2>&1
                ;;  
esac