# Copyright (C) 2006 Tomasz Melcer <liori AT exroot.org>
# Copyright (C) 2006-2014 Yann Leboulanger <asterix AT lagaule.org>
# Copyright (C) 2007 Jean-Marie Traissard <jim AT lapin.org>
# Copyright (C) 2008 Stephan Erb <steve-e AT h3c.de>
# Copyright (C) 2018 Philipp Hörist <philipp AT hoerist.com>
#
# This file is part of Gajim.
#
# Gajim is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published
# by the Free Software Foundation; version 3 only.
#
# Gajim is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Gajim.  If not, see <http://www.gnu.org/licenses/>.

# XEP-0060: Publish-Subscribe

import nbxmpp
from nbxmpp.namespaces import Namespace

from gajim.common import app
from gajim.common.modules.base import BaseModule


class PubSub(BaseModule):

    _nbxmpp_extends = 'PubSub'
    _nbxmpp_methods = [
        'publish',
        'delete',
        'set_node_configuration',
        'get_node_configuration',
        'get_access_model',
    ]

    def __init__(self, con):
        BaseModule.__init__(self, con)

        self.publish_options = False

    def pass_disco(self, info):
        if Namespace.PUBSUB_PUBLISH_OPTIONS in info.features:
            self._log.info('Discovered Pubsub publish options: %s', info.jid)
            self.publish_options = True

    def send_pb_subscription_query(self, jid, cb, **kwargs):
        if not app.account_is_available(self._account):
            return

        query = nbxmpp.Iq('get', to=jid)
        pb = query.addChild('pubsub', namespace=Namespace.PUBSUB)
        pb.addChild('subscriptions')

        self._con.connection.SendAndCallForResponse(query, cb, kwargs)

    def send_pb_subscribe(self, jid, node, cb, **kwargs):
        if not app.account_is_available(self._account):
            return

        our_jid = app.get_jid_from_account(self._account)
        query = nbxmpp.Iq('set', to=jid)
        pb = query.addChild('pubsub', namespace=Namespace.PUBSUB)
        pb.addChild('subscribe', {'node': node, 'jid': our_jid})

        self._con.connection.SendAndCallForResponse(query, cb, kwargs)

    def send_pb_unsubscribe(self, jid, node, cb, **kwargs):
        if not app.account_is_available(self._account):
            return

        our_jid = app.get_jid_from_account(self._account)
        query = nbxmpp.Iq('set', to=jid)
        pb = query.addChild('pubsub', namespace=Namespace.PUBSUB)
        pb.addChild('unsubscribe', {'node': node, 'jid': our_jid})

        self._con.connection.SendAndCallForResponse(query, cb, kwargs)


def get_instance(*args, **kwargs):
    return PubSub(*args, **kwargs), 'PubSub'