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

test("M8-02 through M8-10 gates, pins and bounded redraws manifest-backed page faults", async ({ page }) => {
  test.setTimeout(90_000);
  await page.goto("/");
  const result = await page.evaluate(() => new Promise<any>((resolve, reject) => {
    const worker = new Worker("/src/workers/nanovdb-page-feedback-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({});
  }));

  expect(result.leafByteOffset).toBeGreaterThan(0);
  expect(result.leafPageId).toBeGreaterThan(0);
  expect(result.leafPageId).toBeLessThan(result.pageCount);
  expect(result.manifestPageBytes).toBe(4 * 1024 * 1024);
  expect(result.leafSampleCount).toBe(256);
  expect(result.leafSamplesFallback).toBe(true);
  expect(result.leafResult).toEqual({
    schemaVersion: 1,
    renderRevision: 17,
    attemptedCount: 1,
    gpuStoredCount: 1,
    uniqueCount: 1,
    pageIds: [result.leafPageId],
    status: "READY",
    errorCode: null,
  });
  expect(result.leafGuard).toEqual(result.guardWords);
  expect(result.staleDispatch).toEqual({
    schemaVersion: 1,
    renderRevision: 17,
    currentRenderRevision: 18,
    status: "STALE",
    requestedPageIds: [],
    requestedCount: 0,
    errorCode: "REVISION_CONFLICT",
  });
  expect(result.stalePageIoCount).toBe(0);
  expect(result.currentDispatch).toEqual({
    schemaVersion: 1,
    renderRevision: 17,
    currentRenderRevision: 17,
    status: "ACCEPTED",
    requestedPageIds: [result.leafPageId],
    requestedCount: 1,
    errorCode: null,
  });
  expect(result.pageIoRequests).toEqual([{ pageId: result.leafPageId, renderRevision: 17 }]);
  expect(result.manifestFeedbackResult).toEqual({
    schemaVersion: 1,
    renderRevision: 19,
    attemptedCount: 1,
    gpuStoredCount: 1,
    uniqueCount: 1,
    pageIds: [0],
    status: "READY",
    errorCode: null,
  });
  expect(result.manifestWordsZero).toBe(true);
  expect(result.manifestStaleDispatch).toEqual({
    schemaVersion: 1,
    renderRevision: 19,
    currentRenderRevision: 20,
    status: "STALE",
    requestedPageIds: [],
    requestedCount: 0,
    errorCode: "REVISION_CONFLICT",
  });
  expect(result.staleManifestRangeCount).toBe(0);
  expect(result.manifestDispatch).toEqual({
    schemaVersion: 1,
    renderRevision: 19,
    currentRenderRevision: 19,
    status: "ACCEPTED",
    requestedPageIds: [0],
    requestedCount: 1,
    errorCode: null,
  });
  expect(result.manifestPageIoRequests).toEqual([{ pageId: 0, renderRevision: 19 }]);
  expect(result.manifestRanges.length).toBeGreaterThan(0);
  expect(result.manifestRanges).toEqual(result.declaredManifestRanges);
  expect(result.manifestRanges.every((range: { sha256: string }) => /^[a-f0-9]{64}$/.test(range.sha256))).toBe(true);
  expect(result.manifestPageMatchesPayload).toBe(true);
  expect(result.coalesced.rangeCalls).toBe(1);
  expect(result.coalesced.underlyingAborts).toBe(0);
  expect(result.coalesced.beforeCancel).toEqual({ pendingPages: 1, subscribers: 2, pageIds: [0] });
  expect(result.coalesced.afterFirstCancel).toEqual({ pendingPages: 1, subscribers: 1, pageIds: [0] });
  expect(result.coalesced.afterResolve).toEqual({ pendingPages: 0, subscribers: 0, pageIds: [] });
  expect(result.coalesced.outcomes[0]).toEqual({ status: "REJECTED", name: "AbortError" });
  expect(result.coalesced.outcomes[1].status).toBe("RESOLVED");
  expect(result.coalesced.consumers).toEqual(["second:0"]);
  expect(result.lastCancel.rangeCalls).toBe(1);
  expect(result.lastCancel.underlyingAborts).toBe(1);
  expect(result.lastCancel.afterFirst).toEqual({
    stats: { pendingPages: 1, subscribers: 1, pageIds: [0] },
    underlyingAborts: 0,
  });
  expect(result.lastCancel.afterLast).toEqual({ pendingPages: 0, subscribers: 0, pageIds: [] });
  expect(result.lastCancel.outcomes).toEqual([
    { status: "REJECTED", name: "AbortError" },
    { status: "REJECTED", name: "AbortError" },
  ]);
  expect(result.tamperedPage).toEqual({
    rangeCalls: 1,
    residentWrites: 0,
    errorCode: "NANOVDB_HASH_MISMATCH",
    errorMessage: expect.stringContaining("NANOVDB_HASH_MISMATCH"),
    cache: {
      residentPageCount: 0,
      residentBytes: 0,
      residentVirtualPages: [],
      coordinator: { pendingPages: 0, subscribers: 0, pageIds: [] },
    },
  });
  expect(result.framePin).toEqual({
    pinnedPage0: true,
    pinnedMissingPage: false,
    afterPinnedEviction: {
      residentVirtualPages: [0, 2],
      evictionCount: 1,
      page0: true,
      page1: false,
      page2: true,
    },
    allPinnedError: expect.stringContaining("NANOVDB_GPU_BUDGET_EXCEEDED: all resident NanoVDB pages are pinned"),
    afterAllPinned: {
      residentVirtualPages: [0, 2],
      evictionCount: 1,
      page3: false,
    },
    afterNextFrame: {
      residentVirtualPages: [2, 3],
      evictionCount: 2,
      page0: false,
      page2: true,
      page3: true,
    },
    pageTable: [0xffffffff, 0xffffffff, 1, 0],
  });
  expect(result.progressiveRedraw).toEqual({
    firstUpload: { pageId: 0, redrawScheduled: true },
    secondUpload: { pageId: 1, redrawScheduled: false },
    failedUpload: expect.stringContaining("NANOVDB_STREAM_INCOMPLETE"),
    beforeFirst: {
      queuedFrames: 1,
      callbacks: 0,
      stats: { pending: true, scheduledCount: 1, redrawCount: 0, maxRedraws: 32, capped: false, errorCode: null },
    },
    afterFirst: {
      queuedFrames: 0,
      callbacks: 1,
      stats: { pending: false, scheduledCount: 1, redrawCount: 1, maxRedraws: 32, capped: false, errorCode: null },
    },
    thirdUpload: { pageId: 2, redrawScheduled: true },
    beforeSecond: {
      queuedFrames: 1,
      callbacks: 1,
      stats: { pending: true, scheduledCount: 2, redrawCount: 1, maxRedraws: 32, capped: false, errorCode: null },
    },
    afterSecond: {
      queuedFrames: 0,
      callbacks: 2,
      stats: { pending: false, scheduledCount: 2, redrawCount: 2, maxRedraws: 32, capped: false, errorCode: null },
    },
  });

  expect(result.progressiveRedrawCap).toEqual({
    cappedRedraw: {
      uploads: [
        { pageId: 0, redrawScheduled: true },
        { pageId: 0, redrawScheduled: true },
        { pageId: 0, redrawScheduled: false },
        { pageId: 0, redrawScheduled: false },
      ],
      callbacks: 2,
      queuedFrames: 0,
      stats: { pending: false, scheduledCount: 2, redrawCount: 2, maxRedraws: 2, capped: true, errorCode: "NANOVDB_PROGRESSIVE_REDRAW_LIMIT" },
    },
    afterCappedReset: { pending: false, scheduledCount: 0, redrawCount: 0, maxRedraws: 2, capped: false, errorCode: null },
  });

  expect(result.missingWordsZero).toBe(true);
  expect(result.overflowResult.status).toBe("OVERFLOW");
  expect(result.overflowResult.renderRevision).toBe(18);
  expect(result.overflowResult.errorCode).toBe("NANOVDB_PAGE_FEEDBACK_OVERFLOW");
  expect(result.overflowResult.attemptedCount).toBeGreaterThan(2);
  expect(result.overflowResult.gpuStoredCount).toBe(2);
  expect(result.overflowResult.uniqueCount).toBe(2);
  expect(new Set(result.overflowResult.pageIds).size).toBe(2);
  expect(result.overflowResult.pageIds).toEqual([...result.overflowResult.pageIds].sort((left, right) => left - right));
  expect(result.overflowResult.pageIds.every((pageId: number) => result.missingPageIds.includes(pageId))).toBe(true);
  expect(result.overflowGuard).toEqual(result.guardWords);
});