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

from src.config import settings

engine = create_async_engine(
    settings.DATABASE_URL,
    pool_size=10,
    max_overflow=20,
    echo=settings.DEBUG,
)

AsyncSessionLocal = async_sessionmaker(engine, expire_on_commit=False)


class Base(DeclarativeBase):
    pass


async def get_db() -> AsyncSession:
    async with AsyncSessionLocal() as session:
        yield session