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

DATABASE_URL = "postgresql+asyncpg://postgres:postgres@db:5432/packlist"

engine = create_async_engine(DATABASE_URL)
SessionLocal = sessionmaker(
    bind=engine, class_=AsyncSession, expire_on_commit=False
)
Base = declarative_base()

async def get_db():
    async with SessionLocal() as db:
        yield db