from collections.abc import Generator
from pathlib import Path

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

from app.config import settings

if settings.sqlite_file_path:
    Path(settings.sqlite_file_path).parent.mkdir(parents=True, exist_ok=True)

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

SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)


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