#!/usr/bin/env python
# encoding: utf-8
# (c) Johannes Fürmann <johannes@weltraumpflege.org>
# http://weltraumpflege.org/~johannes
# This file is part of cryptoparty.in.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from flask import g
from sqlalchemy import create_engine
from sqlalchemy.orm import scoped_session, sessionmaker
from sqlalchemy.ext.declarative import declarative_base

from cryptoparty import app

engine = create_engine(app.config['DATABASE_URI'])
db_session = scoped_session(sessionmaker(autocommit=False,
                                         autoflush=False,
                                         bind=engine))
Base = declarative_base()
Base.query = db_session.query_property()


def init_db():
    # import all modules here that might define models so that
    # they will be registered properly on the metadata.  Otherwise
    # you will have to import them first before calling init_db()
    import cryptoparty.model
    Base.metadata.create_all(bind=engine)


from cryptoparty import app

@app.before_request
def create_db_session():
    g.db = db_session()


@app.teardown_request
def teardown_db_session(exc):
    g.db.close()
    g.db = None
