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

from config import settings

engine = create_async_engine(
    settings.DATABASE_URL,
    pool_size=10,
    max_overflow=20,
    pool_pre_ping=True,
    echo=settings.DEBUG,
)
AsyncSessionLocal = async_sessionmaker(engine, expire_on_commit=False, class_=AsyncSession)


class Base(DeclarativeBase):
    pass


async def get_db():
    async with AsyncSessionLocal() as session:
        yield session