from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession
from sqlalchemy.orm import sessionmaker, declarative_base
import os
from dotenv import load_dotenv


load_dotenv()  # загрузить .env при старте


DATABASE_URL = os.getenv("DATABASE_URL", "sqlite+aiosqlite:///./test.db")


engine = create_async_engine(DATABASE_URL, echo=False, future=True)
AsyncSessionLocal = sessionmaker(bind=engine, class_=AsyncSession, expire_on_commit=False)


Base = declarative_base()


# Для удобства: зависимость (async) для получения сессии
async def get_db():
   async with AsyncSessionLocal() as session:
       yield session