from collections.abc import Generator
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, Session
from app.core.config import get_settings


settings = get_settings()

engine = create_engine(settings.database_url, pool_pre_ping=True, pool_size=10, max_overflow=20)
SessionLocal = sessionmaker(bind=engine, autocommit=False, autoflush=False, expire_on_commit=False, class_=Session)


def get_db() -> Generator[Session, None, None]:
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()