/**
 * verify-live.mjs — 驗「線上網址現在真的在用的組態」＝「deploy.targets.json 宣告的目標」。
 *
 * 用法：
 *   node scripts/verify-live.mjs                 驗全部目標的全部對外網址
 *   node scripts/verify-live.mjs personal        只驗某個目標
 *   node scripts/verify-live.mjs --wait          容忍 CF Pages 生效延遲（重試）
 *   npm run verify
 *
 * 為什麼要這支（2026-08-08）：部署腳本印出來的值，過去只是「它打算做什麼」，
 * 沒有任何一步回頭確認「站上真的變成那樣」。deploy.mjs 推完會自動叫它；
 * 它也可以獨立跑，用來回答「現在哪一台躺在錯的狀態」。
 *
 * 🔴 一律帶 no-cache（快取害人誤判過）。curl|grep 不算驗前端，但 config.js 是
 *    純文字資產、VIEWS/HOME 是 HTML 內嵌常數，抓原始碼比對是「這一項」的正確驗法；
 *    「頁面真的能用」另外走瀏覽器實載。
 */
import { loadTargets, resolveTarget, parseApiBase } from './targets.mjs';

const NOCACHE = { 'Cache-Control': 'no-cache', Pragma: 'no-cache' };

async function get(url) {
  const res = await fetch(`${url}${url.includes('?') ? '&' : '?'}_nc=${Date.now()}`, {
    headers: NOCACHE,
    cache: 'no-store',
    redirect: 'follow',
  });
  return { status: res.status, text: await res.text() };
}

/** 驗一個網址。回傳 { url, ok, checks:[{name, ok, want, got}] } */
export async function verifyUrl(t, url) {
  const checks = [];
  try {
    const cfg = await get(`${url}/config.js`);
    const got = cfg.status === 200 ? parseApiBase(cfg.text) : `HTTP ${cfg.status}`;
    checks.push({ name: 'apiBase', ok: got === t.apiBase, want: t.apiBase, got: got ?? '(config.js 裡找不到 apiBase)' });
  } catch (e) {
    checks.push({ name: 'apiBase', ok: false, want: t.apiBase, got: `連線失敗：${e.message}` });
  }

  try {
    const con = await get(`${url}/console/`);
    const views = con.text.match(/var VIEWS = (\[[^\]]*\]);/);
    const home = con.text.match(/var HOME = "([^"]*)";/);
    const gotViews = con.status === 200 ? (views ? views[1] : '(找不到 VIEWS)') : `HTTP ${con.status}`;
    const gotHome = con.status === 200 ? (home ? home[1] : '(找不到 HOME)') : `HTTP ${con.status}`;
    checks.push({
      name: `profile(${t.profile}).views`,
      ok: gotViews === JSON.stringify(t.views),
      want: JSON.stringify(t.views),
      got: gotViews,
    });
    checks.push({ name: `profile(${t.profile}).home`, ok: gotHome === t.home, want: t.home, got: gotHome });
  } catch (e) {
    checks.push({ name: `profile(${t.profile})`, ok: false, want: t.profile, got: `連線失敗：${e.message}` });
  }

  return { url, ok: checks.every((c) => c.ok), checks };
}

export async function verifyTarget(name, { wait = false } = {}) {
  const t = resolveTarget(name);
  const attempts = wait ? 8 : 1;
  let results = [];
  for (let i = 1; i <= attempts; i++) {
    results = [];
    for (const url of t.verifyUrls) results.push(await verifyUrl(t, url));
    if (results.every((r) => r.ok) || i === attempts) break;
    process.stdout.write(`  … 尚未生效，${5}s 後重試（${i}/${attempts - 1}）\n`);
    await new Promise((r) => setTimeout(r, 5000));
  }
  return { name, target: t, ok: results.every((r) => r.ok), results };
}

export function printReport(reports) {
  for (const r of reports) {
    console.log(`\n【${r.name}】${r.target.description}`);
    console.log(`  宣告：profile=${r.target.profile}  apiBase=${r.target.apiBase}`);
    for (const u of r.results) {
      console.log(`  ${u.ok ? '✅' : '❌'} ${u.url}`);
      for (const c of u.checks) {
        if (c.ok) console.log(`       ✓ ${c.name} = ${c.got}`);
        else console.log(`       ✗ ${c.name}\n           宣告：${c.want}\n           線上：${c.got}`);
      }
    }
  }
}

export async function verifyAll(names, opts) {
  const reports = [];
  for (const n of names) reports.push(await verifyTarget(n, opts));
  return reports;
}

const isCli = process.argv[1] && import.meta.url === `file://${process.argv[1]}`;
if (isCli) {
  const args = process.argv.slice(2);
  const wait = args.includes('--wait');
  const picked = args.filter((a) => !a.startsWith('--'));
  const names = picked.length ? picked : loadTargets().names;
  const reports = await verifyAll(names, { wait });
  printReport(reports);
  const bad = reports.filter((r) => !r.ok);
  if (bad.length) {
    console.error(`\n❌ ${bad.length} 個目標的線上組態與宣告不符：${bad.map((b) => b.name).join('、')}`);
    console.error('   （站上實際在用的值 ≠ deploy.targets.json 宣告的值——這正是要被擋掉的那個病）');
    process.exit(1);
  }
  console.log('\n✅ 所有目標：線上組態＝宣告值。');
}