from fastapi import FastAPI

from app.config import Settings, get_settings


def create_app(settings: Settings | None = None) -> FastAPI:
    resolved = settings or get_settings()
    resolved.data_dir.mkdir(parents=True, exist_ok=True)
    resolved.tokens_dir.mkdir(parents=True, exist_ok=True)
    resolved.activities_dir.mkdir(parents=True, exist_ok=True)

    app = FastAPI(title="MyWhoosh Garmin Sync")
    app.state.settings = resolved

    @app.get("/healthz")
    def healthz() -> dict[str, str]:
        return {"status": "ok"}

    return app


app = create_app()