# Slixmpp: The Slick XMPP Library
# Copyright (C) 2011  Nathanael C. Fritz
# This file is part of Slixmpp.
# See the file LICENSE for copying permission.
import datetime as dt

from slixmpp import Message
from slixmpp.xmlstream import register_stanza_plugin, ElementBase, ET, JID
from slixmpp.plugins.xep_0004 import Form
from slixmpp.plugins import xep_0082


class Event(ElementBase):
    namespace = 'http://jabber.org/protocol/pubsub#event'
    name = 'event'
    plugin_attrib = 'pubsub_event'
    interfaces = set()


class EventItem(ElementBase):
    namespace = 'http://jabber.org/protocol/pubsub#event'
    name = 'item'
    plugin_attrib = name
    interfaces = {'id', 'payload', 'node', 'publisher'}

    def set_payload(self, value):
        self.xml.append(value)

    def get_payload(self):
        children = list(self.xml)
        if len(children) > 0:
            return children[0]

    def del_payload(self):
        for child in self.xml:
            self.xml.remove(child)


class EventRetract(ElementBase):
    namespace = 'http://jabber.org/protocol/pubsub#event'
    name = 'retract'
    plugin_attrib = name
    interfaces = {'id'}


class EventItems(ElementBase):
    namespace = 'http://jabber.org/protocol/pubsub#event'
    name = 'items'
    plugin_attrib = name
    interfaces = {'node'}


class EventCollection(ElementBase):
    namespace = 'http://jabber.org/protocol/pubsub#event'
    name = 'collection'
    plugin_attrib = name
    interfaces = {'node'}


class EventAssociate(ElementBase):
    namespace = 'http://jabber.org/protocol/pubsub#event'
    name = 'associate'
    plugin_attrib = name
    interfaces = {'node'}


class EventDisassociate(ElementBase):
    namespace = 'http://jabber.org/protocol/pubsub#event'
    name = 'disassociate'
    plugin_attrib = name
    interfaces = {'node'}


class EventConfiguration(ElementBase):
    namespace = 'http://jabber.org/protocol/pubsub#event'
    name = 'configuration'
    plugin_attrib = name
    interfaces = {'node'}


class EventPurge(ElementBase):
    namespace = 'http://jabber.org/protocol/pubsub#event'
    name = 'purge'
    plugin_attrib = name
    interfaces = {'node'}


class EventDelete(ElementBase):
    namespace = 'http://jabber.org/protocol/pubsub#event'
    name = 'delete'
    plugin_attrib = name
    interfaces = {'node', 'redirect'}

    def set_redirect(self, uri):
        del self['redirect']
        redirect = ET.Element('{%s}redirect' % self.namespace)
        redirect.attrib['uri'] = uri
        self.xml.append(redirect)

    def get_redirect(self):
        redirect = self.xml.find('{%s}redirect' % self.namespace)
        if redirect is not None:
            return redirect.attrib.get('uri', '')
        return ''

    def del_redirect(self):
        redirect = self.xml.find('{%s}redirect' % self.namespace)
        if redirect is not None:
            self.xml.remove(redirect)


class EventSubscription(ElementBase):
    namespace = 'http://jabber.org/protocol/pubsub#event'
    name = 'subscription'
    plugin_attrib = name
    interfaces = {'node', 'expiry', 'jid', 'subid', 'subscription'}

    def get_expiry(self):
        expiry = self._get_attr('expiry')
        if expiry.lower() == 'presence':
            return expiry
        return xep_0082.parse(expiry)

    def set_expiry(self, value):
        if isinstance(value, dt.datetime):
            value = xep_0082.format_datetime(value)
        self._set_attr('expiry', value)

    def set_jid(self, value):
        self._set_attr('jid', str(value))

    def get_jid(self):
        return JID(self._get_attr('jid'))


register_stanza_plugin(Message, Event)
register_stanza_plugin(Event, EventCollection)
register_stanza_plugin(Event, EventConfiguration)
register_stanza_plugin(Event, EventPurge)
register_stanza_plugin(Event, EventDelete)
register_stanza_plugin(Event, EventItems)
register_stanza_plugin(Event, EventSubscription)
register_stanza_plugin(EventCollection, EventAssociate)
register_stanza_plugin(EventCollection, EventDisassociate)
register_stanza_plugin(EventConfiguration, Form)
register_stanza_plugin(EventItems, EventItem, iterable=True)
register_stanza_plugin(EventItems, EventRetract, iterable=True)