from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, declarative_base
import os

DATABASE_URL = os.getenv(
    "DATABASE_URL", "postgresql://user:password@db:5432/mydatabase"
)

engine = create_engine(DATABASE_URL)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
Base = declarative_base()