/**
 * PWA 验收脚本：装得上、离线开得开、有新版本提醒得了。
 *
 * 跑法（必须先有一个"生产同构"的站点：后端用 WEB_DIST_DIR 指向 web/dist）：
 *   WEB_DIST_DIR=<repo>/web/dist ../backend/.venv/Scripts/python.exe -m uvicorn app.main:app --port 8101
 *   node web/e2e/pwa.mjs                 # 默认 BASE=http://127.0.0.1:8101
 *
 * 两个坑：
 * 1. Service Worker 只在安全上下文（https / localhost）注册，所以这里必须走 127.0.0.1，
 *    不能换成内网 IP——那台机器上要真的装上，得先有 https。
 * 2. 无头 Chromium 不会触发 beforeinstallprompt，所以"安装"那段用 iPhone 的 UA 走
 *    iOS 分支（分享 → 添加到主屏幕），这是唯一能稳定断言到的安装引导。
 */
import { chromium } from "playwright-core";
import { mkdirSync, readFileSync } from "node:fs";

const BASE = process.env.BASE ?? "http://127.0.0.1:8101";
const PHONE = process.env.PHONE ?? "13900000001";
const CODE = process.env.CODE ?? "123456";
const PWD_FILE = new URL("../../.local/e2e-account-password.txt", import.meta.url);
const OUT = "e2e/artifacts";
const CHROME =
  process.env.CHROME ??
  `${process.env.LOCALAPPDATA}\\ms-playwright\\chromium-1223\\chrome-win64\\chrome.exe`;

const IOS_UA =
  "Mozilla/5.0 (iPhone; CPU iPhone OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.1";

let pass = 0;
let fail = 0;
function check(name, ok, extra = "") {
  if (ok) {
    pass += 1;
    console.log(`PASS ${name}`);
  } else {
    fail += 1;
    console.log(`FAIL ${name} ${extra}`);
  }
}

async function token() {
  // 先试密码（快、不撞短信节流），不行再发验证码
  try {
    const saved = readFileSync(PWD_FILE, "utf8").trim();
    const r = await fetch(`${BASE}/api/v1/auth/login/password`, {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ phone: PHONE, password: saved }),
    });
    const body = await r.json();
    if (body?.code === 0) return body.data.tokens;
  } catch {
    // 没存过密码：往下走验证码
  }
  await fetch(`${BASE}/api/v1/auth/sms/send`, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ phone: PHONE }),
  });
  const r = await fetch(`${BASE}/api/v1/auth/login`, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ phone: PHONE, code: CODE }),
  });
  const body = await r.json();
  if (body?.code !== 0) throw new Error(`登录失败：${JSON.stringify(body)}`);
  return body.data.tokens;
}

async function main() {
  mkdirSync(OUT, { recursive: true });
  const tokens = await token();
  const browser = await chromium.launch({ executablePath: CHROME });

  // ── 一、桌面尺寸：Service Worker 与 manifest ─────────────────────
  const desktop = await browser.newContext({ viewport: { width: 1440, height: 900 } });
  await desktop.addInitScript(
    ([access, refresh]) => {
      localStorage.setItem("dadao.access", access);
      localStorage.setItem("dadao.refresh", refresh);
    },
    [tokens.access_token, tokens.refresh_token],
  );
  const page = await desktop.newPage();
  const errors = [];
  page.on("pageerror", (e) => errors.push(String(e)));
  await page.goto(`${BASE}/`, { waitUntil: "networkidle" });

  const manifestHref = await page.getAttribute('link[rel="manifest"]', "href");
  check("页面挂了 manifest", Boolean(manifestHref), String(manifestHref));

  const manifest = await (await fetch(`${BASE}${manifestHref}`)).json();
  check("manifest 名字是「达道Task」", manifest.short_name === "达道Task", JSON.stringify(manifest.name));
  check("独立窗口打开（display=standalone）", manifest.display === "standalone", String(manifest.display));
  check("三个图标齐全", (manifest.icons ?? []).length === 3, JSON.stringify(manifest.icons));
  check(
    "有一个 maskable 图标",
    (manifest.icons ?? []).some((i) => String(i.purpose).includes("maskable")),
  );

  for (const icon of manifest.icons ?? []) {
    const res = await fetch(`${BASE}/${String(icon.src).replace(/^\//, "")}`);
    check(`图标可下载 ${icon.sizes}`, res.ok && res.headers.get("content-type") === "image/png");
  }

  const sw = await page.evaluate(async () => {
    const reg = await navigator.serviceWorker.ready;
    return { scope: reg.scope, state: reg.active?.state ?? "none" };
  });
  check("Service Worker 已激活", sw.state === "activated", JSON.stringify(sw));
  check("作用域是整站", sw.scope.endsWith("/"), sw.scope);

  const shellCached = await page.evaluate(async () => {
    const cache = await caches.open("workbox-precache-v2-" + location.origin + "/");
    const keys = await cache.keys();
    return keys.some((k) => k.url.includes("index.html"));
  });
  check("页面骨架已预缓存", shellCached);

  const themeColor = await page.getAttribute('meta[name="theme-color"]', "content");
  check("主题色是品牌靛蓝", themeColor === "#4f46e5", String(themeColor));
  check("桌面尺寸没有控制台报错", errors.length === 0, errors.join(" | "));
  await desktop.close();

  // ── 二、iPhone 尺寸：安装引导（iOS 只能靠「分享 → 添加到主屏幕」）─────
  const phone = await browser.newContext({
    viewport: { width: 390, height: 844 },
    userAgent: IOS_UA,
    deviceScaleFactor: 2,
  });
  await phone.addInitScript(
    ([access, refresh]) => {
      localStorage.setItem("dadao.access", access);
      localStorage.setItem("dadao.refresh", refresh);
    },
    [tokens.access_token, tokens.refresh_token],
  );
  const m = await phone.newPage();
  await m.goto(`${BASE}/`, { waitUntil: "networkidle" });
  await m.waitForSelector("text=把达道Task装到桌面", { timeout: 10000 });
  const hint = await m.locator("text=把达道Task装到桌面").first().isVisible();
  check("窄屏首页有安装引导", hint);
  const iosText = await m.locator("text=添加到主屏幕").count();
  check("iOS 给出的是「分享 → 添加到主屏幕」", iosText > 0);
  await m.screenshot({ path: `${OUT}/pwa-install-hint.png` });

  await m.getByRole("button", { name: "不再提示安装" }).click();
  await m.reload({ waitUntil: "networkidle" });
  const stillThere = await m.locator("text=把达道Task装到桌面").count();
  check("关掉之后不再打扰（刷新也不回来）", stillThere === 0);

  // ── 三、有新版时提醒，点「稍后」收起 ─────────────────────────────
  await m.evaluate(() => window.dispatchEvent(new Event("dadao:pwa-update-ready")));
  await m.waitForSelector("text=有新版了", { timeout: 5000 });
  check("检测到新版本会提示刷新", (await m.locator("text=有新版了").count()) > 0);
  await m.screenshot({ path: `${OUT}/pwa-update-prompt.png` });
  await m.getByRole("button", { name: "稍后" }).click();
  check("点「稍后」会收起", (await m.locator("text=有新版了").count()) === 0);

  // ── 四、断网还能打开（这是装到桌面的实际价值）─────────────────────
  await m.evaluate(() => localStorage.clear());
  await m.reload({ waitUntil: "networkidle" });
  await phone.setOffline(true);
  await m.reload({ waitUntil: "domcontentloaded" }).catch(() => {});
  const body = await m.locator("body").innerText();
  check("断网后页面骨架仍能打开", body.length > 0 && /登录|达道/.test(body), body.slice(0, 80));
  await phone.setOffline(false);
  await m.screenshot({ path: `${OUT}/pwa-offline.png` });

  await phone.close();
  await browser.close();

  console.log(`\n${fail === 0 ? "ALL PASS" : "SOME FAILED"} — pass ${pass}, fail ${fail}`);
  process.exit(fail === 0 ? 0 : 1);
}

main().catch((err) => {
  console.error("脚本异常 —", err?.message ?? err);
  process.exit(1);
});