// @vitest-environment jsdom
//
// ONE test, ONE file, for the same reason CommandPalette.ordering.dom.test.tsx has its own: it
// ASSERTS on a reconcile issuing a REAL, unstubbed programmatic history.back(), and history.ts's
// overlay bookkeeping is module-global. history.dom.test.ts keeps its shared state clean by never
// leaving a real back() in flight — its layers close by a genuine Back, a stubbed back(), or a
// consumed burial mark — and this test would break that.
import { describe, it, expect, vi } from "vitest";
import { renderHook, act } from "@testing-library/react";
import { navigateOverOverlays, useBackToClose } from "./history";

const settle = () =>
  act(async () => {
    await Promise.resolve();
  });

describe("navigateOverOverlays · burying a navigation that never happened", () => {
  // The round-2 defect. `navigateOverOverlays` marked every live overlay entry buried BEFORE it knew
  // whether the navigation pushed anything, and `setPage` early-returns when the requested page is
  // already current. Home is the default landing page, so Shift+W pressed while already on Home with
  // the player open buried the player's entry under a push that never happened: its unmount then
  // consumed the mark instead of reclaiming the entry with history.back(), leaving an orphan. The
  // user's next browser Back popped onto an identical `sfPage` with an empty overlay stack — a press
  // that changed nothing on screen, one more per play → Shift+W → close cycle.
  it("leaves the overlay's entry reclaimable when the navigation reports it pushed nothing", async () => {
    const overlay = renderHook(() => useBackToClose(() => {}));
    await settle();
    const back = vi.spyOn(window.history, "back");
    try {
      // What `setPage` returns from its early return: asked for the page we are already on.
      const navigate = vi.fn(() => false);
      act(() => navigateOverOverlays(navigate));
      expect(navigate).toHaveBeenCalledTimes(1);

      overlay.unmount();
      await settle();
      // Nothing was pushed over it, so the entry is still ours — reclaimed, not silently orphaned.
      expect(back).toHaveBeenCalledTimes(1);
    } finally {
      back.mockRestore();
    }
  });
});