// 运行：node --test scripts/festival-regression.test.mjs；无需硬件。
import assert from "node:assert/strict";
import { existsSync, readFileSync } from "node:fs";
import { createRequire } from "node:module";
import { fileURLToPath } from "node:url";
import { test } from "node:test";
import { build } from "esbuild";
const require = createRequire(import.meta.url);
// pnpm 中以渲染器的解析路径统一 React 实例，避免测试环境的重复副本。
const react = createRequire(require.resolve("react-dom/server"))("react");
const { createElement } = react;
const { renderToStaticMarkup } = require("react-dom/server");
const src = fileURLToPath(new URL("../client/src", import.meta.url));
const base = "/b9/v2/modern/";
async function loadModule(relative) {
  const result = await build({
    entryPoints: [`${src}/${relative}`],
    bundle: true,
    write: false,
    format: "cjs",
    platform: "node",
    jsx: "automatic",
    external: ["react", "react/*"],
    loader: { ".css": "empty" },
    alias: { "@": src },
    define: { "import.meta.env.BASE_URL": JSON.stringify(base) },
  });
  const module = { exports: {} };
  const moduleRequire = id => id === "react" ? react : require(id);
  new Function("require", "module", "exports", result.outputFiles[0].text)(moduleRequire, module, module.exports);
  return module.exports;
}
const { getFestival, getNewYearDisplayYear, FESTIVAL_GREETINGS } = await loadModule("lib/festival.ts");
const { NewYearVolumeThumb, NewYearVolumeIcon, NewYearCardDecoration } = await loadModule("components/festival/NewYearDecoration.tsx");
const { default: FestivalGreeting } = await loadModule("components/festival/FestivalGreeting.tsx");
const date = (year, month, day, hour = 12) => new Date(year, month - 1, day, hour);

for (const [year, month, day, expected] of [
  [2026, 12, 19, null], [2026, 12, 20, "christmas"],
  [2026, 12, 26, "christmas"], [2026, 12, 27, "newyear"],
  [2026, 12, 31, "newyear"], [2027, 1, 1, "newyear"],
  [2027, 1, 3, "newyear"], [2027, 1, 4, null],
  [2026, 10, 25, null], [2026, 10, 26, "halloween"],
  [2026, 11, 1, "halloween"], [2026, 11, 2, null],
  [2027, 12, 27, "newyear"], [2028, 1, 3, "newyear"],
]) {
  test(`日期窗口 ${year}-${month}-${day} → ${expected}`, () => {
    for (const hour of [0, 12, 23]) {
      assert.equal(getFestival(date(year, month, day, hour), ""), expected);
    }
  });
}

test("URL 强制开关与未知值回退不改变原节日行为", () => {
  for (const festival of ["newyear", "christmas", "halloween"]) {
    assert.equal(getFestival(date(2026, 6, 1), `?festival=${festival}`), festival);
  }
  for (const off of ["off", "none"]) {
    assert.equal(getFestival(date(2026, 12, 31), `?festival=${off}`), null);
  }
  for (const unknown of ["", "invalid", "toString", "__proto__"]) {
    assert.equal(getFestival(date(2026, 12, 31), `?festival=${unknown}`), "newyear");
  }
  assert.equal(getFestival(date(2026, 12, 25), "?festival=newyear"), "newyear");
});

test("年份在十二月指向下一年，一月保持同一跨年年份", () => {
  assert.equal(getNewYearDisplayYear(date(2026, 12, 27)), 2027);
  assert.equal(getNewYearDisplayYear(date(2026, 12, 31)), 2027);
  assert.equal(getNewYearDisplayYear(date(2027, 1, 1)), 2027);
  assert.equal(getNewYearDisplayYear(date(2027, 6, 1)), 2027);
  assert.equal(getNewYearDisplayYear(date(2027, 12, 31)), 2028);
});

test("滑块及大小音量使用独立元旦素材，无圣诞老人、铃铛或万圣节图案", () => {
  const cases = [
    [NewYearVolumeThumb, {}, "party-hat.svg"],
    [NewYearVolumeIcon, { dim: true }, "sparkler.svg"],
    [NewYearVolumeIcon, {}, "fireworks.svg"],
  ];
  for (const [Component, props, asset] of cases) {
    const html = renderToStaticMarkup(createElement(Component, props));
    assert.ok(html.includes(`${base}images/festival/newyear/${asset}`));
    assert.doesNotMatch(html, /christmas|halloween|santa|bell\.png/);
    assert.match(html, /draggable="false"/);
  }
  const decoration = renderToStaticMarkup(createElement(NewYearCardDecoration));
  assert.match(decoration, /aria-hidden="true"/);
});

test("三套节日横幅正常渲染，元旦包含动态年份与 JAN 1 日历", () => {
  for (const festival of ["newyear", "christmas", "halloween"]) {
    const html = renderToStaticMarkup(createElement(FestivalGreeting, { festival }));
    assert.ok(html.includes(FESTIVAL_GREETINGS[festival]));
    assert.ok(html.includes(`${base}images/festival/${festival}/banner-center.jpg`));
    if (festival === "newyear") {
      assert.ok(html.includes(String(getNewYearDisplayYear())));
      assert.ok(html.includes("calendar.svg"));
      assert.match(html, /NEW YEAR · NEW CHAPTER · MORE POSSIBILITIES/);
    } else {
      assert.doesNotMatch(html, /newyear-greeting-year|calendar\.svg/);
    }
  }
});

test("元旦全部素材及五个导航映射存在，部署子路径得到保留", () => {
  const assets = ["party-hat.svg", "sparkler.svg", "fireworks.svg", "calendar.svg", "clock.svg", "confetti.svg",
    "banner-left.jpg", "banner-center.jpg", "banner-right.jpg"];
  for (const asset of assets) {
    assert.ok(existsSync(new URL(`../client/public/images/festival/newyear/${asset}`, import.meta.url)), asset);
  }
  const nav = readFileSync(`${src}/components/BottomNav.tsx`, "utf8");
  const names = [...nav.matchAll(/newyear: festivalIcon\("newyear", "([^"]+)"\)/g)].map(match => match[1]);
  assert.deepEqual(names, ["confetti", "clock", "calendar", "fireworks", "party-hat"]);
});