import { userManager } from './oidc';

const KEY = 'pm.returnUrl';
let redirecting = false;

export function saveReturnUrl(path: string): void {
  if (path === '/login' || path.startsWith('/auth/callback')) return;
  sessionStorage.setItem(KEY, path);
}

export function consumeReturnUrl(): string {
  const v = sessionStorage.getItem(KEY) ?? '/';
  sessionStorage.removeItem(KEY);
  return v;
}

export async function triggerLoginRedirect(): Promise<void> {
  if (redirecting) return;
  redirecting = true;
  saveReturnUrl(window.location.pathname + window.location.search);
  try {
    await userManager.removeUser();
  } catch (err) {
    console.error('OIDC: removeUser before redirect failed', err);
  }
  await userManager.signinRedirect();
}