# Copyright (C) 2019 Philipp Hörist <philipp AT hoerist.com>
# Copyright (C) 2019 Pavel R. <pd at narayana dot im>

# This file is part of Gajim OTR Plugin.
#
# Gajim OTR Plugin 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.
#
# This software 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 can always obtain full license text at <http://www.gnu.org/licenses/>.

# TODO: OTR state notifications
# TODO: Fingerprints authentication GUI
# TODO: SMP authentication GUI

import logging
import os
import nbxmpp
from gajim.common import app
from gajim.common.connection_handlers_events import MessageOutgoingEvent
from gajim.plugins import GajimPlugin
from gajim.plugins.plugins_i18n import _
from otrplugin.modules import otr

log = logging.getLogger('gajim.p.otrplugin')

class OTRPlugin(GajimPlugin):
    def init(self):
        self.description = _('Provides Off-the-Record encryption for tet messages')
        self.encryption_name = otr.ENCRYPTION_NAME
        self.modules = [otr]
        self.gui_extension_points = {
            'encrypt' + self.encryption_name: (self.encrypt_message, None),
            'encryption_state' + self.encryption_name: (self.encryption_state, None),
        } 
        self.activatable = not otr.ERROR
        self.available_text = otr.ERROR
        return

    def activate(self):
        pass

    def deactivate(self):
        pass

    @staticmethod
    def activate_encryption(chat_control):
        return True

    @staticmethod
    def encryption_state(chat_control, state):
        state['visible'] = True
        state['authenticated'] = False
        
    def encrypt_message(self, conn, event, callback):
        if not event.message: return
        otr = app.connections[event.account].get_module('OTR')
        otr.encrypt_message(event, callback)
    
    # if not set, gajim will not allow us to send file with OTR encryption enabled
    def encrypt_file(self, file, account, callback):
        callback(file)