// Onboarding wizard visibility, kept stable across the OAuth redirect round-trip.
//
// Granting a YouTube scope navigates away to Google's consent screen and back, which
// fully reloads the SPA — so we can't hold the wizard's progress in React state. Instead
// we derive the current step from the granted scopes (me.can_read / me.can_write) and use
// two storage flags to decide whether to auto-open:
//
//   ONBOARD_ACTIVE (sessionStorage)   — set while the user is mid-flow (e.g. just clicked
//                                       "Connect"); makes the wizard reopen after the
//                                       redirect so they land on the next step.
//   ONBOARD_DISMISSED (localStorage)  — set when the user skips the essential read step;
//                                       suppresses the auto-popup on future logins (they
//                                       can still reopen it from Settings → Account).

export const ONBOARD_ACTIVE = "siftlode.onboarding.active";
export const ONBOARD_DISMISSED = "siftlode.onboarding.dismissed";

export function shouldAutoOpenOnboarding(me: {
  can_read: boolean;
  is_demo?: boolean;
  google_enabled?: boolean;
}): boolean {
  // The shared demo account can never connect YouTube, so never nudge it to.
  if (me.is_demo) return false;
  // YouTube connect needs Google OAuth configured on this instance. A self-host instance may run
  // email+password only — then there's nothing to connect, so don't nudge.
  if (me.google_enabled === false) return false;
  if (sessionStorage.getItem(ONBOARD_ACTIVE)) return true;
  return !me.can_read && !localStorage.getItem(ONBOARD_DISMISSED);
}

/** Mark a grant as in progress, then send the user to Google's consent screen. */
export function beginGrant(access: "read" | "write"): void {
  sessionStorage.setItem(ONBOARD_ACTIVE, "1");
  window.location.href = `/auth/upgrade?access=${access}`;
}

/** Leave the wizard. `dismiss` suppresses the future auto-popup (used when read is skipped). */
export function endOnboarding(dismiss: boolean): void {
  sessionStorage.removeItem(ONBOARD_ACTIVE);
  if (dismiss) localStorage.setItem(ONBOARD_DISMISSED, "1");
}