from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine, AsyncSession
from sqlalchemy.orm import DeclarativeBase

from backend.app.core.config import settings

engine = create_async_engine(settings.DATABASE_URL, echo=settings.DEBUG)

async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)


class Base(DeclarativeBase):
    pass


async def get_session() -> AsyncSession:
    async with async_session() as session:
        yield session