import { expect, test } from "@playwright/test";

test("M8-14 Worker restart restores the OPFS manifest without trusting resident pages", async ({ page }) => {
  await page.goto("/");
  const run = (action: "prepare" | "reopen", state?: unknown): Promise<any> => page.evaluate(({ action, state }) => new Promise<any>((resolve, reject) => {
    const worker = new Worker("/src/workers/nanovdb-opfs-restart-test.worker.ts", { type: "module" });
    worker.onmessage = (event) => { worker.terminate(); event.data.error ? reject(new Error(event.data.error)) : resolve(event.data); };
    worker.onerror = (event) => { worker.terminate(); reject(new Error(event.message)); };
    worker.postMessage({ action, state });
  }), { action, state });
  const prepared = await run("prepare");
  const reopened = await run("reopen", {
    projectId: prepared.projectId,
    bundleSha256: prepared.bundleSha256,
    claimedResidentPages: prepared.claimedResidentPages,
  });
  expect(prepared.residentBeforeRestart).toEqual([0]);
  expect(reopened.manifestSha256).toBe(prepared.bundleSha256);
  expect(reopened.claimedResidentPages).toEqual([0]);
  expect(reopened.residentBeforeRestore).toEqual([]);
  expect(reopened.residentAfterRestore).toEqual([0]);
  expect(reopened.pageBytes).toBe(64 * 1024);
  expect(reopened.tamperedError).toContain("NANOVDB_HASH_MISMATCH");
  expect(reopened.residentAfterTamperedRestore).toEqual([]);
});