"""
    SleekXMPP: The Sleek XMPP Library
    Copyright (C) 2011  Nathanael C. Fritz
    This file is part of SleekXMPP.

    See the file LICENSE for copying permission.
"""

import logging

from sleekxmpp.stanza import Iq, StreamFeatures
from sleekxmpp.xmlstream import register_stanza_plugin
from sleekxmpp.plugins.base import base_plugin

from sleekxmpp.features.feature_session import stanza


log = logging.getLogger(__name__)


class feature_session(base_plugin):

    def plugin_init(self):
        self.name = 'Start Session'
        self.rfc = '3920'
        self.description = 'Start Session Stream Feature'
        self.stanza = stanza

        self.xmpp.register_feature('session',
                self._handle_start_session,
                restart=False,
                order=10001)

        register_stanza_plugin(Iq, stanza.Session)
        register_stanza_plugin(StreamFeatures, stanza.Session)

    def _handle_start_session(self, features):
        """
        Handle the start of the session.

        Arguments:
            feature -- The stream features element.
        """
        iq = self.xmpp.Iq()
        iq['type'] = 'set'
        iq.enable('session')
        iq.send(now=True)

        self.xmpp.features.add('session')

        log.debug("Established Session")
        self.xmpp.sessionstarted = True
        self.xmpp.session_started_event.set()
        self.xmpp.event("session_start")