"""
数据库配置 - SQLite
"""
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
import os

# 数据库路径
BASE_DIR = os.path.dirname(os.path.abspath(__file__))
DATABASE_URL = f"sqlite:///{os.path.join(BASE_DIR, 'blog.db')}"

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

Base = declarative_base()

# 依赖注入
def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()