from __future__ import annotations

from pathlib import Path
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, declarative_base

from fastapi_demo.app.core.config import settings

# sorgt dafür, dass ./data existiert (für sqlite datei)
Path("data").mkdir(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)
Base = declarative_base()


def dispose_engine() -> None:
    engine.dispose()