from collections.abc import Iterator

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

from app.config import settings

connect_args = (
    {"check_same_thread": False} if settings.database_url.startswith("sqlite") else {}
)

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


def get_db() -> Iterator[Session]:
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()