import avahi
import dbus

__all__ = ["ZeroconfService"]

class ZeroconfService(object):
	def __init__(self, name, port, stype="_http._tcp", domain="", host="", text=""):
		self.name = name
		self.stype = stype
		self.domain = domain
		self.host = host
		self.port = port
		self.text = text

	def publish(self):
		bus = dbus.SystemBus()
		server = dbus.Interface(bus.get_object(avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER), avahi.DBUS_INTERFACE_SERVER)

		g = dbus.Interface(bus.get_object(avahi.DBUS_NAME, server.EntryGroupNew()), avahi.DBUS_INTERFACE_ENTRY_GROUP)
		g.AddService(avahi.IF_UNSPEC, avahi.PROTO_UNSPEC, dbus.UInt32(0), self.name, self.stype, self.domain, self.host, dbus.UInt16(self.port), self.text)

		g.Commit()
		self.group = g

	def unpublish(self):
		if self.group is not None:
			self.group.Reset()