import os

import re

from sqlalchemy import create_engine

from sqlalchemy.ext.declarative import declarative_base

from sqlalchemy.orm import scoped_session, sessionmaker

from config import DATABASE_URL as db

if db and db.startswith("postgres://"):

    app = db.replace("postgres://", "postgresql://", 1)

BASE = declarative_base()

def start() -> scoped_session:

    engine = create_engine(app)

    BASE.metadata.bind = engine

    BASE.metadata.create_all(engine)

    return scoped_session(sessionmaker(bind=engine, autoflush=False))

SESSION = start()