File: mood.py

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# Copyright (C) 2018 Philipp Hörist <philipp AT hoerist.com>
#
# This file is part of nbxmpp.
#
# This program 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; either version 3
# of the License, or (at your option) any later version.
#
# This program 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 this program; If not, see <http://www.gnu.org/licenses/>.

from nbxmpp.namespaces import Namespace
from nbxmpp.protocol import Node
from nbxmpp.protocol import NodeProcessed
from nbxmpp.structs import StanzaHandler
from nbxmpp.structs import MoodData
from nbxmpp.const import MOODS
from nbxmpp.modules.base import BaseModule
from nbxmpp.modules.util import finalize
from nbxmpp.task import iq_request_task


class Mood(BaseModule):

    _depends = {
        'publish': 'PubSub'
    }

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

        self._client = client
        self.handlers = [
            StanzaHandler(name='message',
                          callback=self._process_pubsub_mood,
                          ns=Namespace.PUBSUB_EVENT,
                          priority=16),
        ]

    def _process_pubsub_mood(self, _client, stanza, properties):
        if not properties.is_pubsub_event:
            return

        if properties.pubsub_event.node != Namespace.MOOD:
            return

        item = properties.pubsub_event.item
        if item is None:
            # Retract, Deleted or Purged
            return

        mood_node = item.getTag('mood', namespace=Namespace.MOOD)
        if not mood_node.getChildren():
            self._log.info('Received mood: %s - removed mood', properties.jid)
            return

        mood, text = None, None
        for child in mood_node.getChildren():
            name = child.getName().strip()
            if name == 'text':
                text = child.getData()
            elif name in MOODS:
                mood = name

        if mood is None and mood_node.getPayload():
            self._log.warning('No valid mood value found')
            self._log.warning(stanza)
            raise NodeProcessed

        data = MoodData(mood, text)
        pubsub_event = properties.pubsub_event._replace(data=data)
        self._log.info('Received mood: %s - %s', properties.jid, data)

        properties.pubsub_event = pubsub_event

    @iq_request_task
    def set_mood(self, data):
        task = yield

        item = Node('mood', {'xmlns': Namespace.MOOD})
        if data is not None and data.mood:
            item.addChild(data.mood)

            if data.text:
                item.addChild('text', payload=data.text)

        result = yield self.publish(Namespace.MOOD, item, id_='current')

        yield finalize(task, result)