import os
from sqlalchemy import create_engine
# MODIFICA: La best practice moderna è usare DeclarativeBase
from sqlalchemy.orm import sessionmaker, DeclarativeBase
from dotenv import load_dotenv

load_dotenv()

DATABASE_URL = os.getenv("DATABASE_URL")

engine = create_engine(DATABASE_URL)

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

# Assicurati che Base sia definito così
class Base(DeclarativeBase):
    pass

# Dependency per ottenere una sessione DB per ogni richiesta
def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()