from sqlalchemy import create_engine, text
from sqlalchemy.orm import DeclarativeBase, sessionmaker

DATABASE_URL = "sqlite:///./data/cellar.db"

engine = create_engine(DATABASE_URL, connect_args={"check_same_thread": False})
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)


class Base(DeclarativeBase):
    pass


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


def migrate():
    with engine.connect() as conn:
        try:
            conn.execute(text("ALTER TABLE users ADD COLUMN token_version INTEGER NOT NULL DEFAULT 0"))
            conn.commit()
        except Exception:
            pass  # Column already exists