"""
    Slixmpp: The Slick XMPP Library
    Copyright (C) 2011 Nathanael C. Fritz, Lance J.T. Stout
    This file is part of Slixmpp.

    See the file LICENSE for copying permission.
"""

from slixmpp import Message
from slixmpp.xmlstream import register_stanza_plugin
from slixmpp.xmlstream.handler import Callback
from slixmpp.xmlstream.matcher import StanzaPath
from slixmpp.plugins import BasePlugin
from slixmpp.plugins.xep_0004 import stanza
from slixmpp.plugins.xep_0004.stanza import Form, FormField, FieldOption


class XEP_0004(BasePlugin):

    """
    XEP-0004: Data Forms
    """

    name = 'xep_0004'
    description = 'XEP-0004: Data Forms'
    dependencies = set(['xep_0030'])
    stanza = stanza

    def plugin_init(self):
        self.xmpp.register_handler(
            Callback('Data Form',
                 StanzaPath('message/form'),
                 self.handle_form))

        register_stanza_plugin(FormField, FieldOption, iterable=True)
        register_stanza_plugin(Form, FormField, iterable=True)
        register_stanza_plugin(Message, Form)

    def plugin_end(self):
        self.xmpp.remove_handler('Data Form')
        self.xmpp['xep_0030'].del_feature(feature='jabber:x:data')

    def session_bind(self, jid):
        self.xmpp['xep_0030'].add_feature('jabber:x:data')

    def make_form(self, ftype='form', title='', instructions=''):
        f = Form()
        f['type'] = ftype
        f['title'] = title
        f['instructions'] = instructions
        return f

    def handle_form(self, message):
        self.xmpp.event("message_xform", message)

    def build_form(self, xml):
        return Form(xml=xml)