# -*- coding: utf-8 -*-

# Copyright (C) 2013-2014 Avencall
#
# 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 xivo_dao.alchemy.user_line import UserLine

from xivo_dao.helpers.db_manager import Session
from xivo_dao.resources.user_line.persistor import Persistor


def persistor():
    return Persistor(Session, 'LineExtension', 'extension_id')


def get_by(**criteria):
    return persistor().get_by(**criteria)


def find_all_by(**criteria):
    return persistor().find_all_by(**criteria)


def associate(line, extension):
    return persistor().associate_line_extension(line, extension)


def dissociate(line, extension):
    return persistor().dissociate_line_extension(line, extension)


def find_all_by_line_id(line_id):
    return (Session.query(UserLine.line_id,
                          UserLine.extension_id)
            .filter(UserLine.line_id == line_id)
            .filter(UserLine.extension_id != None)  # noqa
            .distinct()
            .all())


def find_by_line_id(line_id):
    return persistor().find_by(line_id=line_id)


def find_by_extension_id(extension_id):
    return persistor().find_by(extension_id=extension_id)
