Auto pause players when bluetooth headphones disconnect

bluepause.py

#!/usr/bin/env python3
import dbus
from dbus.mainloop.glib import DBusGMainLoop
import gi.repository.GLib as glib
import os


def device_removed_callback(object_, interfaces):
    if interfaces[-1] != "org.bluez.MediaPlayer1":
        return
    # You would filter that 'device' is your Bluetooth headphone
    print(f"Device removed ({object_}).")
    # Pause audio playback using playerctl or pactl
    os.system("playerctl --all-players pause")
    # or call a DBus method to pause audio on the player


# Setting up the main loop
DBusGMainLoop(set_as_default=True)
bus = dbus.SystemBus()

# Connect to the signal you're interested in
bus.add_signal_receiver(
    device_removed_callback,
    bus_name="org.bluez",
    path="/",
    dbus_interface="org.freedesktop.DBus.ObjectManager",
    signal_name="InterfacesRemoved",
)

# Run the main loop
loop = glib.MainLoop()
loop.run()