import type { HomeOnboardingShell as HomeOnboardingShellComponent } from "@/components/home-onboarding-shell";

type Shell = typeof HomeOnboardingShellComponent;

let loaded: Shell | null = null;
let loading: Promise<Shell> | null = null;

/** One import per tab; a failed chunk can be retried. */
export function loadHomeOnboardingShell(): Promise<Shell> {
  loading ??= import("@/components/home-onboarding-shell").then((module) => {
    loaded = module.HomeOnboardingShell;
    return loaded;
  }, (error: unknown) => {
    loading = null;
    throw error;
  });
  return loading;
}

export function loadedHomeOnboardingShell(): Shell | null {
  return loaded;
}

/** Cold boot, before reveal, when the profile is incomplete (home-bootstrap-run.ts). */
export function preloadHomeOnboardingShell(): Promise<void> {
  return loadHomeOnboardingShell().then(() => undefined, () => undefined);
}