// Issue 06 全量验收。
// ① dist 体积与死文件；② project.json 与代码一致；③ 三种比例 0 控制台报错；
// ④ 预设往返不丢用户级音源/音量设置。
import { readdirSync, readFileSync, statSync } from "node:fs";
import { basename, extname, join } from "node:path";
import { withPage, sleep } from "../tools/cdp.mjs";

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

// ── ① 体积与死文件 ──
console.log("=== ① dist 体积与死文件 ===");
const walk = (dir) =>
  readdirSync(dir, { withFileTypes: true }).flatMap((e) => {
    const p = join(dir, e.name);
    return e.isDirectory() ? walk(p) : [p];
  });
const files = walk("dist");
const total = files.reduce((s, f) => s + statSync(f).size, 0);
check(total <= 35 * 1024 * 1024, "总体积 ≤ 35 MB", `${(total / 1048576).toFixed(2)} MB / ${files.length} 个文件`);

const TEXT = new Set([".html", ".js", ".json", ".txt", ".css", ".atlas"]);
const texts = files.filter((f) => TEXT.has(extname(f)));
const contents = new Map(texts.map((f) => [f, readFileSync(f, "utf8")]));
// 这四个是 WE 的元数据/入口/说明，本来就不被页面引用
const ALLOWED = new Set(["project.json", "README.txt", "index.html", "preview.gif"]);
// 关键：比对时要把文件**自身**的内容排除掉。否则一个文件只要在自己开头写上自己的名字
// （比如注释里的 "// wallpaper-engine.js"）就会被判为"被引用"，死文件因此漏网。
const dead = files.filter((f) => {
  const n = basename(f);
  if (ALLOWED.has(n)) return false;
  const others = texts
    .filter((t) => t !== f)
    .map((t) => contents.get(t))
    .join("\n");
  return !others.includes(n);
});
check(dead.length === 0, "0 个死文件", dead.length ? dead.join(", ") : "无孤立资源");

// ── ② project.json ──
console.log("\n=== ② project.json ===");
const project = JSON.parse(readFileSync("dist/project.json", "utf8"));
check(project.version === 3, "version = 3", String(project.version));
check(project.preview === "preview.gif", "preview 指向 preview.gif");
check(!!project.general.properties.bgm, "新增 bgm combo");
check(project.general.properties.preset.value === "xilian", "preset 默认值未变");
const presetValues = project.general.properties.preset.options.map((o) => o.value).sort();
check(
  JSON.stringify(presetValues) === JSON.stringify(["kv37", "xilian"]),
  "preset 的 combo 取值未变（用户已保存的设置依赖它）",
  presetValues.join(", "),
);
const bgmValues = project.general.properties.bgm.options.map((o) => o.value);
check(bgmValues.includes("auto"), "bgm 含「随预设」档", bgmValues.join(", "));
const gifSize = statSync("dist/preview.gif").size;
check(gifSize < 500 * 1024, "preview.gif < 500 KB", `${(gifSize / 1024).toFixed(0)} KB`);

// ── ③ 三种比例 0 报错 ──
console.log("\n=== ③ 21:9 / 16:9 / 9:16 控制台与异常 ===");
for (const [w, h, tag] of [
  [3440, 1440, "21:9"],
  [1920, 1080, "16:9"],
  [1080, 1920, "9:16"],
]) {
  const r = await withPage({ width: w, height: h }, async ({ send, evaluate, consoleLines, exceptions }) => {
    await send("Page.navigate", { url: "http://127.0.0.1:8190/?__freeze=1" });
    const deadline = Date.now() + 30000;
    let ready = false;
    while (Date.now() < deadline) {
      if (await evaluate('!!(window.__test && (window.__test.successAt || window.__test.error))')) {
        ready = true;
        break;
      }
      await sleep(150);
    }
    await sleep(500);
    const state = await evaluate(`(function(){
      var p = window.__player, v = p.currentViewport;
      return { w: p.canvas.clientWidth, h: p.canvas.clientHeight,
               vw: +v.width.toFixed(1), vh: +v.height.toFixed(1),
               err: window.__test.error || null };
    })()`);
    return { ready, state, consoleLines, exceptions };
  });
  const noisy = r.consoleLines.filter((l) => /error|uncaught|fail/i.test(l));
  const aspectOk = r.state && Math.abs(r.state.vw / r.state.vh - r.state.w / r.state.h) < 0.002;
  check(r.ready && !r.state?.err, `${tag} 播放器就绪`, r.state?.err ?? "无错");
  check(aspectOk, `${tag} 可见矩形比例与画布一致`, r.state ? `${r.state.vw}×${r.state.vh}` : "—");
  check(noisy.length === 0 && r.exceptions.length === 0, `${tag} 0 控制台报错 / 0 异常`, noisy.concat(r.exceptions).slice(0, 3).join(" | ") || "干净");
}

// ── ④ 预设往返不丢音频设置 ──
console.log("\n=== ④ 预设往返 10 次，音频设置不得丢失 ===");
const rt = await withPage({ width: 1280, height: 720 }, async ({ send, evaluate, exceptions }) => {
  await send("Page.navigate", { url: "http://127.0.0.1:8190/?__freeze=1" });
  const deadline = Date.now() + 30000;
  while (Date.now() < deadline) {
    if (await evaluate('!!(window.__test && (window.__test.successAt || window.__test.error))')) break;
    await sleep(150);
  }
  await sleep(500);

  await evaluate(`window.wallpaperPropertyListener.applyUserProperties({
    audio_file: { value: "https://example.com/custom-track.mp3" },
    audio_volume: { value: 0.2 }
  })`);
  await sleep(300);

  const rows = [];
  for (let i = 0; i < 10; i++) {
    const id = i % 2 === 0 ? "kv37" : "xilian";
    await evaluate(`window.wallpaperPropertyListener.applyUserProperties({ preset: { value: "${id}" } })`);
    await sleep(320);
    rows.push(
      await evaluate(`(function(){
        var a = document.getElementById("background-music");
        return { id: "${id}", src: a.src.split("/").pop(), vol: a.volume,
                 draws: window.__test.drawCalls };
      })()`),
    );
  }
  return { rows, exceptions };
});
const srcOk = rt.rows.every((r) => r.src === "custom-track.mp3");
const volOk = rt.rows.every((r) => Math.abs(r.vol - 0.2) < 0.001);
check(srcOk, "10 次切换后自定义音源仍生效", [...new Set(rt.rows.map((r) => r.src))].join(", "));
check(volOk, "10 次切换后音量仍为 0.2", [...new Set(rt.rows.map((r) => r.vol))].join(", "));
check(rt.rows[rt.rows.length - 1].draws > rt.rows[0].draws, "切换后仍在持续绘制", `${rt.rows[0].draws} → ${rt.rows[rt.rows.length - 1].draws}`);
check(rt.exceptions.length === 0, "往返过程 0 未捕获异常", rt.exceptions.join(" | ") || "无");

console.log(`\n结论：${failures === 0 ? "全部通过 ✓" : `${failures} 项失败 ✗`}`);
process.exit(failures === 0 ? 0 : 1);