from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from enterprise_ai.core.config import DATABASE_URL

engine= create_engine(
    DATABASE_URL,
    pool_pre_ping=True,
    pool_size=10,
    max_overflow=20,
    pool_recycle=1800
)

SessionLocal= sessionmaker(
    autocommit=False,
    autoflush=False,
    bind=engine
)

def get_db():
    db = SessionLocal()
    try:
        yield db
    except Exception:
        db.rollback()
        raise
    finally:
        db.close()