// L4 — WebKit(사파리 엔진) 크로스 브라우저 검증.
// 핵심 불변식(h1 줄수·브랜드 1줄·수축 탐지·콘텐츠 정합·오버플로)을 WebKit 에서 재실행한다.
import { webkit } from "playwright";
import path from "node:path";
import url from "node:url";

const here = path.dirname(url.fileURLToPath(import.meta.url));
const ROOT = path.resolve(here, "../public/work");
const results = [];
const pass = (name, detail = "") => results.push({ ok: true, name, detail });
const fail = (name, detail = "") => results.push({ ok: false, name, detail });

const APPS = {
  "gaon-lms": ["dashboard", "students", "attendance", "grades", "notice"],
  "dure-enrollment": ["catalog", "starred", "enrollments", "credits"],
};

const UTILS = `
  window.__lines = (sel) => {
    const el = document.querySelector(sel);
    if (!el) return -1;
    const range = document.createRange();
    range.selectNodeContents(el);
    const rects = [...range.getClientRects()].filter((r) => r.width > 1 && r.height > 4);
    const tops = rects.map((r) => r.top).sort((a, b) => a - b);
    const ls = [];
    for (const t of tops) if (!ls.length || t - ls[ls.length - 1] > 5) ls.push(t);
    return ls.length;
  };
`;

const browser = await webkit.launch();
const page = await browser.newPage();
await page.setViewportSize({ width: 390, height: 844 });

for (const [app, views] of Object.entries(APPS)) {
  const appUrl = url.pathToFileURL(path.join(ROOT, app, "index.html")).href;
  await page.goto(appUrl, { waitUntil: "networkidle" });
  await page.evaluate(UTILS);
  await page.evaluate(() => document.fonts.ready);

  // 브랜드 1줄 + h1 1줄 + 페이지 오버플로
  const brand = await page.evaluate(`__lines('.brand')`);
  if (brand > 1) fail(`${app} WebKit 브랜드 세로`, brand + "줄"); else pass(`${app} WebKit 브랜드`);
  const h1 = await page.evaluate(`__lines('h1')`);
  if (h1 > 1) fail(`${app} WebKit h1 여러 줄`, h1 + "줄"); else pass(`${app} WebKit h1`);

  for (const v of views) {
    await page.click(`[data-view="${v}"]`);
    await page.waitForTimeout(120);
    const over = await page.evaluate(() => document.documentElement.scrollWidth - document.documentElement.clientWidth);
    if (over > 0) fail(`${app}/${v} WebKit 오버플로`, `+${over}px`);
    const vh1 = await page.evaluate(`__lines('.view.is-on h1, h1')`);
    if (vh1 > 1) fail(`${app}/${v} WebKit h1`, vh1 + "줄");
  }
  pass(`${app} WebKit 전 뷰 오버플로·h1`);

  // 콘텐츠 정합 (JS 계산 동일성)
  const cons = await page.evaluate(() => {
    const out = [];
    if (window.GAON && document.getElementById("rep-stats")) {
      const s = GAON.rosterStats(STUDENTS);
      const txt = document.getElementById("rep-stats").textContent;
      if (!txt.includes(s.active + "명")) out.push("재학 " + s.active);
      if (!txt.includes(s.avgAtt + "%")) out.push("평균 " + s.avgAtt);
    }
    if (window.DURE && document.getElementById("en-credits")) {
      const list = [...enrolled].map((id) => COURSES.find((c) => c.id === id));
      const want = String(DURE.credits(list));
      const got = document.getElementById("en-credits").textContent.trim();
      if (got !== want) out.push("학점 " + got + "≠" + want);
    }
    return out;
  });
  if (cons.length) fail(`${app} WebKit 콘텐츠 정합`, cons.join(",")); else pass(`${app} WebKit 콘텐츠 정합`);
}
await browser.close();

const fails = results.filter((r) => !r.ok).length;
for (const r of results) console.log((r.ok ? "PASS" : "FAIL") + "  " + r.name + (r.detail ? ` — ${r.detail}` : ""));
console.log(fails ? `\nWEBKIT: ${fails} FAIL` : "\nWEBKIT ALL PASS");
process.exit(fails ? 1 : 0);