# Slixmpp: The Slick XMPP Library
# Copyright (C) 2013 Nathanael C. Fritz, Lance J.T. Stout
# This file is part of slixmpp.
# See the file LICENSE for copying permission.
from slixmpp.stanza import Iq
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.google.settings import stanza


class GoogleSettings(BasePlugin):

    """
    Google: Gmail Notifications

    Also see <https://developers.google.com/talk/jep_extensions/usersettings>.
    """

    name = 'google_settings'
    description = 'Google: User Settings'
    dependencies = set()
    stanza = stanza

    def plugin_init(self):
        register_stanza_plugin(Iq, stanza.UserSettings)

        self.xmpp.register_handler(
                Callback('Google Settings',
                    StanzaPath('iq@type=set/google_settings'),
                    self._handle_settings_change))

    def plugin_end(self):
        self.xmpp.remove_handler('Google Settings')

    def get(self, timeout=None, callback=None):
        iq = self.xmpp.Iq()
        iq['type'] = 'get'
        iq.enable('google_settings')
        return iq.send(timeout=timeout, callback=callback)

    def update(self, settings, timeout=None, callback=None):
        iq = self.xmpp.Iq()
        iq['type'] = 'set'
        iq.enable('google_settings')

        for setting, value in settings.items():
            iq['google_settings'][setting] = value

        return iq.send(timeout=timeout, callback=callback)

    def _handle_settings_change(self, iq):
        reply = self.xmpp.Iq()
        reply['type'] = 'result'
        reply['id'] = iq['id']
        reply['to'] = iq['from']
        reply.send()
        self.xmpp.event('google_settings_change', iq)