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

# Copyright (C) 2015-2016 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 contextlib import contextmanager

from xivo_dao.helpers import db_manager
from xivo_dao.helpers.db_manager import daosession


@contextmanager
def flush_session(session):
    try:
        yield
        session.flush()
    except Exception:
        session.rollback()
        raise


@daosession
def get_dao_session(session):
    return session


@contextmanager
def session_scope():
    session = db_manager.Session()
    try:
        yield session
        session.commit()
    except:
        session.rollback()
        raise
    finally:
        db_manager.Session.remove()
