Configures bluetooth headphones with PulseAudio

bluset.sh

#!/usr/bin/env bash
# A simple script to enable A2DP mode on bluetooth headphones with PulseAudio

# MAC address of the target bluetooth device
device_mac="57:D3:98:0A:26:05"

echo "Setting up bluetooth headphones. You will be prompted for password if required."

echo "Restarting bluetooth service..."
sudo systemctl restart bluetooth

sleep 1

echo "Attempting to reconnect device..."

try_connect=$(
{
sleep 2
echo connect "$device_mac"
sleep 5
echo quit
} | bluetoothctl
)

sleep 1

try_connect=${try_connect,,}

if [[ "$try_connect" = *"connection successful"* ]]; then
    echo "Connection successful!"

    echo "Identifying regisered audio device..."

    translated_mac=$(echo "$device_mac" | tr ":" "_")
    device_index=$(pactl list cards short | grep -i "$translated_mac" | cut -d $'\t' -f 1)

    if [[ "$device_index" != "" ]]; then
        echo "Audio device found."

        echo "Updating device audio profile to A2DP..."
        pactl set-card-profile $device_index a2dp_sink

        if [ $? = 0 ]; then
            echo "Audio profile updated successfully!"

            echo "Identifying new output device..."
            sink_index=$(pactl list sinks short | grep -i "$translated_mac" | cut -d $'\t' -f 1)

            if [[ "$sink_index" != "" ]]; then
                echo "Output device found."

                echo "Setting to device for output..."
                pactl set-default-sink "$sink_index"

                if [ $? = 0 ]; then
                    echo "Output device set successfully!"
                else
                    echo "Failed to set as output device!"
                fi
            else
                echo "Device not registered as output device!"
            fi
        else
            echo "Failed to update audio profile..."
        fi
    else
        echo "Device not regiserted as audio device!"
    fi
else
    echo "Failed to connect device!"
    if [[ "$try_connect" != *"$device_mac"* ]]; then
        echo "Device not found!"
    fi
fi