"""
    Slixmpp: The Slick XMPP Library
    Copyright (C) 2012 Nathanael C. Fritz, Lance J.T. Stout
    This file is part of Slixmpp.

    See the file LICENSE for copying permissio
"""

import logging

import slixmpp
from slixmpp.stanza import Message
from slixmpp.xmlstream.handler import Callback
from slixmpp.xmlstream.matcher import StanzaPath
from slixmpp.xmlstream import register_stanza_plugin
from slixmpp.plugins import BasePlugin
from slixmpp.plugins.xep_0308 import stanza, Replace


log = logging.getLogger(__name__)


class XEP_0308(BasePlugin):

    """
    XEP-0308 Last Message Correction
    """

    name = 'xep_0308'
    description = 'XEP-0308: Last Message Correction'
    dependencies = set(['xep_0030'])
    stanza = stanza

    def plugin_init(self):
        self.xmpp.register_handler(
            Callback('Message Correction',
                     StanzaPath('message/replace'),
                     self._handle_correction))

        register_stanza_plugin(Message, Replace)

        self.xmpp.use_message_ids = True

    def plugin_end(self):
        self.xmpp.remove_handler('Message Correction')
        self.xmpp.plugin['xep_0030'].del_feature(feature=Replace.namespace)

    def session_bind(self, jid):
        self.xmpp.plugin['xep_0030'].add_feature(Replace.namespace)

    def _handle_correction(self, msg):
        self.xmpp.event('message_correction', msg)