# Slixmpp: The Slick XMPP Library
# Copyright (C) 2013 Nathanael C. Fritz, Lance J.T. Stout
# This file is part of Slixmpp.
# See the file LICENSE for copying permission.
import logging

from slixmpp import Iq, Message
from slixmpp.plugins import BasePlugin
from slixmpp.xmlstream.handler import Callback
from slixmpp.xmlstream.matcher import StanzaPath
from slixmpp.xmlstream import register_stanza_plugin, JID
from slixmpp.plugins.xep_0020 import stanza, FeatureNegotiation
from slixmpp.plugins.xep_0004 import Form


log = logging.getLogger(__name__)


class XEP_0020(BasePlugin):

    name = 'xep_0020'
    description = 'XEP-0020: Feature Negotiation'
    dependencies = {'xep_0004', 'xep_0030'}
    stanza = stanza

    def plugin_init(self):
        self.xmpp['xep_0030'].add_feature(FeatureNegotiation.namespace)

        register_stanza_plugin(FeatureNegotiation, Form)

        register_stanza_plugin(Iq, FeatureNegotiation)
        register_stanza_plugin(Message, FeatureNegotiation)