import os

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

DATABASE_URL = os.environ.get("DATABASE_URL") or "sqlite:///./dev.db"

engine = create_engine(
    DATABASE_URL, connect_args={"check_same_thread": False} if DATABASE_URL.startswith("sqlite") else {}
)
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False)
Base = declarative_base()


def get_session():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()