# 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-0172: User Nickname

import logging

import nbxmpp

from gajim.common import app
from gajim.common.const import PEPEventType
from gajim.common.exceptions import StanzaMalformed
from gajim.common.modules.pep import AbstractPEPModule, AbstractPEPData

log = logging.getLogger('gajim.c.m.user_nickname')


class UserNicknameData(AbstractPEPData):

    type_ = PEPEventType.NICKNAME

    def __init__(self, nickname):
        self._pep_specific_data = nickname

    def get_nick(self):
        return self._pep_specific_data or ''


class UserNickname(AbstractPEPModule):

    name = 'nick'
    namespace = nbxmpp.NS_NICK
    pep_class = UserNicknameData
    store_publish = True
    _log = log

    def __init__(self, con):
        AbstractPEPModule.__init__(self, con, con.name)

        self.handlers = []

    def _extract_info(self, item):
        nick = ''
        child = item.getTag('nick', namespace=nbxmpp.NS_NICK)
        if child is None:
            raise StanzaMalformed('No nick node')
        nick = child.getData()

        return nick or None

    def _build_node(self, data):
        item = nbxmpp.Node('nick', {'xmlns': nbxmpp.NS_NICK})
        if data is None:
            return
        item.addData(data)
        return item

    def _update_contacts(self, jid, user_pep):
        for contact in app.contacts.get_contacts(self._account, str(jid)):
            contact.contact_name = user_pep.get_nick()

        if jid == self._con.get_own_jid().getStripped():
            if user_pep:
                app.nicks[self._account] = user_pep.get_nick()
            else:
                app.nicks[self._account] = app.config.get_per(
                    'accounts', self._account, 'name')