from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, scoped_session
from app.config import Config

engine = create_engine(Config.SQLALCHEMY_DATABASE_URI, pool_pre_ping=True)
Session = scoped_session(sessionmaker(bind=engine))


def get_db_session():
    return Session()


def close_db_session(exception=None):
    Session.remove()