// 验收 `pnpm build --sim`：把产出的自包含包用 file:// 直接打开，确认
//   ① 骨架真的画出来了（canvas 出现且有非空像素）
//   ② 0 网络请求失败、0 异常、0 控制台报错
//   ③ 模拟器面板在，且明确标着"模拟环境"
//   ④ 音频能播（data: URL 内联）
//   ⑤ 全程没有任何 http(s) 请求（"自包含"的硬定义）
//
// 用法：node tools/checks/verify-sim-page.mts [分发目录名]
import { withPage, sleep } from "../cdp.mjs";
import { existsSync, statSync } from "node:fs";
import { resolve } from "node:path";

const dirName = process.argv[2] ?? "single-hsr-kv37";
const pageAbs = resolve("dist/releases", dirName, "sim/index.html");
if (!existsSync(pageAbs)) {
  console.error(`找不到 ${pageAbs}（先跑 node tools/build.ts --single kv37 --sim）`);
  process.exit(1);
}
const fileUrl = "file:///" + pageAbs.replace(/\\/g, "/");

let failures = 0;
const check = (ok: unknown, label: string, detail?: unknown) => {
  if (!ok) failures++;
  console.log(`  ${ok ? "✓" : "✗"} ${label}${detail !== undefined ? `  → ${String(detail)}` : ""}`);
};

console.log(`自包含包：${pageAbs}`);
console.log(`体积：${(statSync(pageAbs).size / 1024 / 1024).toFixed(1)} MB\n`);

await withPage({ width: 1920, height: 1080 }, async ({ send, evaluate, consoleLines, exceptions }) => {
  const rawSend = send;

  await rawSend("Page.navigate", { url: fileUrl });
  const deadline = Date.now() + 45000;
  let ready = false;
  while (Date.now() < deadline) {
    const canvasCount = await evaluate('document.querySelectorAll("#spine-container canvas").length');
    if (canvasCount > 0) {
      ready = true;
      break;
    }
    await sleep(250);
  }
  await sleep(2500);

  // ⑤ "自包含"的硬定义：这个文档取过的资源里不能有任何 http(s)。
  // 用页面侧的 Resource Timing，不需要 CDP 的事件通道。
  const externalRequests = await evaluate(`(function () {
    return performance.getEntriesByType("resource")
      .map(function (e) { return e.name; })
      .filter(function (n) { return /^https?:/i.test(n); });
  })()`);
  check(
    Array.isArray(externalRequests) && externalRequests.length === 0,
    "全程没有任何 http(s) 请求（自包含的硬定义）",
    Array.isArray(externalRequests) && externalRequests.length > 0 ? externalRequests.slice(0, 3).join(", ") : "无",
  );

  const state = await evaluate(`(function () {
    var canvas = document.querySelector("#spine-container canvas");
    var out = {
      canvas: document.querySelectorAll("#spine-container canvas").length,
      canvasSize: canvas ? canvas.clientWidth + "x" + canvas.clientHeight : null,
      bg: (document.body.style.backgroundImage || "").slice(0, 24),
      bgIsData: /^url\\(["']?data:/.test(document.body.style.backgroundImage || ""),
      sim: !!window.__weSim,
      banner: document.getElementById("wesim") ? document.querySelector("#wesim .banner").textContent.trim() : null,
  // 自包含页在 <分发根>/sim/ 下，预览图必须已被内联成 data: URL——
  // file:// 下 ../preview.gif 是跨目录，读不到。
  previewSrc: (function () { var i = document.querySelector("#wesim .preview img"); return i ? i.getAttribute("src").slice(0, 5) : null; })(),
  previewNatural: (function () { var i = document.querySelector("#wesim .preview img"); return i ? i.naturalWidth + "x" + i.naturalHeight : null; })(),
      modules: window.__weModules ? Object.keys(window.__weModules).length : 0,
      assetKeys: window.__simAssets ? Object.keys(window.__simAssets).length : 0,
      audioSrcIsData: false,
      audioDuration: null
    };
    var a = document.getElementById("background-music");
    if (a) {
      out.audioSrcIsData = /^data:/.test(a.src || "");
      out.audioDuration = isFinite(a.duration) ? a.duration : null;
      out.audioError = a.error ? a.error.code : null;
    }
    return out;
  })()`);

  console.log("=== 渲染 ===");
  check(ready, "出现 Spine 画布", `canvas=${state.canvas}`);
  check(state.canvas === 1, "只有一张 canvas", `canvas=${state.canvas}`);
  check(state.canvasSize === "1920x1080", "画布尺寸等于窗口", state.canvasSize);

  // 画布真的画了东西：跨帧采样非透明比例。
  //
  // 两个坑叠在一起，先前两次都判成了"空白"：
  //   ① 页面里有两张 canvas——spine 自己建的那张（承载渲染）和一张 300×150 的默认尺寸空画布。
  //      按 `#spine-container canvas` 取到的是后者，尺寸就不对。
  //   ② 播放器用 `preserveDrawingBuffer: false`（默认），**帧外**读像素拿到的永远是已清空的缓冲。
  //      只读一次必然是 0%，与画没画无关。必须在 rAF 里连续采样、取历史最大值。
  await evaluate(`(function () {
    var list = [].slice.call(document.querySelectorAll("#spine-container canvas"));
    var canvas = list.sort(function (a, b) { return b.clientWidth * b.clientHeight - a.clientWidth * a.clientHeight; })[0];
    if (!canvas) { window.__px = { error: "没有 canvas" }; return; }
    var gl = canvas.getContext("webgl2") || canvas.getContext("webgl");
    if (!gl) { window.__px = { error: "拿不到 WebGL 上下文" }; return; }
    window.__px = { best: 0, frames: 0, w: canvas.width, h: canvas.height, count: list.length };
    var buf = new Uint8Array(canvas.width * canvas.height * 4);
    var tick = function () {
      gl.readPixels(0, 0, canvas.width, canvas.height, gl.RGBA, gl.UNSIGNED_BYTE, buf);
      var n = 0;
      for (var i = 3; i < buf.length; i += 4) if (buf[i] > 8) n++;
      var ratio = n / (canvas.width * canvas.height);
      if (ratio > window.__px.best) window.__px.best = ratio;
      window.__px.frames++;
      if (window.__px.frames < 90) requestAnimationFrame(tick);
    };
    requestAnimationFrame(tick);
  })()`);
  await sleep(2500);
  const pixels = await evaluate("window.__px");
  check(
    pixels !== null && pixels.best !== undefined && pixels.best > 0.02,
    "画布上有实际像素（不是空白）",
    pixels === null
      ? "没有 canvas"
      : pixels.error
        ? pixels.error
        : `非透明占比 ${((pixels.best ?? 0) * 100).toFixed(1)}%（${pixels.w}x${pixels.h}，采样 ${pixels.frames} 帧）`,
  );

  console.log("\n=== 自包含性 ===");
  check(state.bgIsData, "背景图是 data: URL（没有外部文件依赖）", state.bg);
  check(state.assetKeys > 0, "内联资源表已建立", `${state.assetKeys} 个 key`);
  check(state.modules >= 9, "模块注册表已建立", `${state.modules} 个模块`);
  check(state.audioSrcIsData, "音频是 data: URL（内联）");
  check(state.audioDuration !== null && state.audioDuration > 60, "音频可解码", state.audioDuration ? `${state.audioDuration.toFixed(0)}s` : `error=${state.audioError}`);
  check(pageAbs.length > 0 && !/^https?:/.test(state.bg), "没有指向 http(s) 的资源");

  console.log("\n=== 模拟器 ===");
  check(state.sim, "window.__weSim 存在");
  check(/模拟环境/.test(state.banner ?? ""), "面板标着「模拟环境」", state.banner);
// 自包含包里的预览图：必须是内联的 data: URL，而且要真的解码出来（坏图也会是 data:）。
if (state.previewSrc !== null) {
  check(state.previewSrc === "data:", "预览图已内联成 data: URL", state.previewSrc);
  check(state.previewNatural === "160x160", "内联的预览图能解码", state.previewNatural);
}

  console.log("\n=== 干净度 ===");
  check(exceptions.length === 0, "0 未捕获异常", exceptions.slice(0, 3).join(" | ") || "无");
  const noisy = consoleLines.filter((l) => /error|failed|blocked|CORS/i.test(l));
  check(noisy.length === 0, "0 控制台报错", noisy.slice(0, 3).join(" | ") || "干净");
});

console.log(failures === 0 ? "\n自包含包可用：双击即可打开，无需 pnpm dev，也无需任何 http 服务" : `\n自包含包验收失败：${failures} 处`);
process.exit(failures === 0 ? 0 : 1);