// The step-up broker. `request()` in api.ts lives outside React, so it cannot
// render a dialog itself; instead it calls back into whatever prompt the
// StepUpModal registered when it mounted inside the (app) layout.

type Prompt = (methods: string[]) => Promise<void>;

let prompt: Prompt | null = null;

// The provider registers the real prompt at mount. Before that, or outside the
// app shell, step-up simply fails rather than hanging forever.
export function registerStepUpPrompt(fn: Prompt | null) {
    prompt = fn;
}

export async function requestStepUp(methods: string[]): Promise<void> {
    if (!prompt) throw new Error("re-authentication is required");
    return prompt(methods);
}