app_faturas/app/database.py

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

load_dotenv()

DATABASE_URL = os.getenv("DATABASE_URL")

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

@asynccontextmanager
async def get_session():
    async with AsyncSessionLocal() as session:
        yield session