from sqlalchemy.engine.create import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm.session import sessionmaker

# SQLite数据库URL
SQLALCHEMY_DATABASE_URL = "sqlite:///./document_management.db"

# 创建数据库引擎
engine = create_engine(
    SQLALCHEMY_DATABASE_URL, 
    connect_args={"check_same_thread": False}
)

# 创建SessionLocal类
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

# 创建Base类
Base = declarative_base()