#!/usr/bin/python3

import sys
import dbus

bus = dbus.SystemBus()

manager = dbus.Interface(bus.get_object('org.ofono', '/'),
						'org.ofono.Manager')

if (len(sys.argv) == 1):
	modem = None
	modems = manager.GetModems()
	for path, properties in modems:
		if "org.ofono.VoiceCallManager" in properties["Interfaces"]:
			modem = path
			break
	if (modem is None):
		exit(2)
elif (len(sys.argv) == 2):
	modem = sys.argv[1]
else:
	print("Usage: %s [modem]" % (sys.argv[0]))
	exit(1)

modemapi = dbus.Interface(bus.get_object('org.ofono', modem), 'org.ofono.Modem')
properties = modemapi.GetProperties()

if "org.ofono.VoiceCallManager" not in properties["Interfaces"]:
	print("org.ofono.VoiceCallManager not found")
	exit(2)

print("[ %s ]" % (modem))

mgr = dbus.Interface(bus.get_object('org.ofono', modem),
			'org.ofono.VoiceCallManager')

mgr.ReleaseAndSwap()