from __future__ import annotations

from collections.abc import Generator

from sqlalchemy import create_engine
from sqlalchemy.orm import DeclarativeBase, sessionmaker

from app.config import settings


class Base(DeclarativeBase):
    pass


engine = create_engine(settings.database_url, **settings.database_engine_kwargs)
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False)


def get_db() -> Generator:
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()