from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from app.config import settings

# SQLAlchemy 엔진 생성
engine = create_engine(
    settings.DATABASE_URL,
    connect_args={"check_same_thread": False} if "sqlite" in settings.DATABASE_URL else {},
    echo=settings.DEBUG
)

# 세션 팩토리
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

# Base 클래스
Base = declarative_base()

# DB 세션 의존성
def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()