"""
    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)