#!/usr/bin/env node
/**
 * Production-bundle boot smoke test.
 *
 * WHY THIS EXISTS
 * ───────────────
 * `vite build` only bundles — it never EXECUTES the output. Dev mode doesn't
 * either. So a build can compile cleanly yet crash at runtime (e.g. the
 * cross-chunk circular-import TDZ in the old custom manualChunks:
 * "ReferenceError: Cannot access 'X' before initialization"), shipping a white
 * screen to production.
 *
 * This serves dist/, loads it in headless Chromium, and fails if the app
 * doesn't mount. Used by scripts/auto-deploy.sh to abort a bad deploy.
 *
 * Usage:  node scripts/smoke-test.mjs
 * Env:    CHROME_PATH (default /snap/bin/chromium), SMOKE_TIMEOUT_MS (default 25000)
 *
 * Exits 0 = booted OK, 1 = failed to boot / no Chromium.
 */
import { createServer } from 'node:http';
import { spawn } from 'node:child_process';
import { readFile } from 'node:fs/promises';
import { existsSync, rmSync } from 'node:fs';
import { fileURLToPath } from 'node:url';
import { dirname, join, extname, normalize } from 'node:path';
import { tmpdir } from 'node:os';
import net from 'node:net';
import WebSocket from 'ws';

const root = join(dirname(fileURLToPath(import.meta.url)), '..');
const distDir = join(root, 'dist');
const chromePath = process.env.CHROME_PATH || '/snap/bin/chromium';
const timeoutMs = Number(process.env.SMOKE_TIMEOUT_MS || 25000);
const log = (m) => console.log(`[smoke-test] ${m}`);
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));

if (!existsSync(join(distDir, 'index.html'))) {
  console.error('[smoke-test] dist/index.html missing — build first.');
  process.exit(1);
}
if (!existsSync(chromePath)) {
  console.error(`[smoke-test] Chromium not found at ${chromePath}. Set CHROME_PATH. Refusing to skip the boot test.`);
  process.exit(1);
}

const MIME = {
  '.html': 'text/html', '.js': 'text/javascript', '.mjs': 'text/javascript',
  '.css': 'text/css', '.json': 'application/json', '.webmanifest': 'application/manifest+json',
  '.png': 'image/png', '.jpg': 'image/jpeg', '.jpeg': 'image/jpeg', '.webp': 'image/webp',
  '.svg': 'image/svg+xml', '.ico': 'image/x-icon', '.woff': 'font/woff', '.woff2': 'font/woff2',
  '.ttf': 'font/ttf', '.wasm': 'application/wasm', '.txt': 'text/plain',
};

const freePort = () => new Promise((res) => {
  const s = net.createServer();
  s.on('error', () => res(0));
  s.listen(0, '127.0.0.1', () => { const p = s.address().port; s.close(() => res(p)); });
});

// ── static server ────────────────────────────────────────────────────────────
const servePort = await freePort();
const server = createServer(async (req, res) => {
  try {
    const urlPath = decodeURIComponent((req.url || '/').split('?')[0]);
    let filePath = join(distDir, normalize(urlPath).replace(/^(\.\.[/\\])+/, ''));
    if (urlPath === '/' || !extname(filePath)) filePath = join(distDir, 'index.html');
    let body;
    try { body = await readFile(filePath); }
    catch { filePath = join(distDir, 'index.html'); body = await readFile(filePath); }
    res.writeHead(200, { 'Content-Type': MIME[extname(filePath)] || 'application/octet-stream' });
    res.end(body);
  } catch {
    res.writeHead(500); res.end('error');
  }
});
await new Promise((r) => server.listen(servePort, '127.0.0.1', r));
const appUrl = `http://127.0.0.1:${servePort}/`;

// ── headless Chromium ────────────────────────────────────────────────────────
const cdpPort = await freePort();
const profileDir = join(tmpdir(), `skatespots-smoke-${process.pid}-${cdpPort}`);
const chrome = spawn(chromePath, [
  '--headless=new', '--no-sandbox', '--disable-gpu', '--disable-dev-shm-usage',
  '--disable-extensions', '--no-first-run', '--no-default-browser-check',
  `--user-data-dir=${profileDir}`, `--remote-debugging-port=${cdpPort}`, appUrl,
], { stdio: ['ignore', 'ignore', 'pipe'] });
chrome.stderr.on('data', () => {}); // drain

const cleanup = () => { try { chrome.kill('SIGKILL'); } catch {} try { server.close(); } catch {} try { rmSync(profileDir, { recursive: true, force: true }); } catch {} };
process.on('exit', cleanup);

async function findPageTarget() {
  for (let i = 0; i < 60; i++) {
    try {
      const list = await (await fetch(`http://127.0.0.1:${cdpPort}/json`)).json();
      const p = list.find((t) => t.type === 'page' && t.url.startsWith('http'));
      if (p) return p;
    } catch {}
    await sleep(300);
  }
  return null;
}

const target = await findPageTarget();
if (!target) { console.error('[smoke-test] FAIL: no Chromium page target'); cleanup(); process.exit(1); }

const ws = new WebSocket(target.webSocketDebuggerUrl, { maxPayload: 64 * 1024 * 1024 });
let id = 0; const pend = new Map(); const exceptions = [];
ws.on('message', (d) => {
  const m = JSON.parse(d);
  if (m.id && pend.has(m.id)) { pend.get(m.id)(m); pend.delete(m.id); return; }
  if (m.method === 'Runtime.exceptionThrown') {
    const e = m.params.exceptionDetails;
    exceptions.push(e.exception?.description || e.text || 'unknown exception');
  }
});
const send = (method, params = {}) => new Promise((res) => { const i = ++id; pend.set(i, res); ws.send(JSON.stringify({ id: i, method, params })); });
await new Promise((r) => ws.on('open', r));
await send('Runtime.enable');
await send('Page.enable');
const evalJS = async (expr) => (await send('Runtime.evaluate', { expression: expr, returnByValue: true, awaitPromise: true }))?.result?.result?.value;

// ── boot each route (lazy route chunks can fail independently) ──────────────
// NOTE: the app uses HashRouter, so the route MUST be in the hash — a bare
// `/settings` path loads index.html with no hash and silently renders the
// homepage, which made this test pass without exercising those chunks.
const ROUTES = [
  '/',
  '/marketplace',
  '/marketplace-guidelines',
  '/listing/abc/def',
  '/trades',
  '/lab',
  '/become/organizer',
  '/become/barber',
  '/become/clothing',
  '/leaderboards',
  '/bounties',
  '/community',
  '/settings',
  '/settings?section=profile',
  '/settings?section=coordinator',
  '/settings?section=pro',
  '/settings?section=trust',
  '/npub1yrnuj56rnen08zp2h9h7p74ghgjx6ma39spmpj6w9hzxywutevsst7k5cx',
  '/stash',
  '/collections',
  '/stats',
  '/trust',
  '/alerts',
  '/mints',
  '/app-shop',
  '/diy',
  '/diy/deck-cost',
  '/diy/deck-designer',
  '/review',
  '/card',
  '/card/npub1yrnuj56rnen08zp2h9h7p74ghgjx6ma39spmpj6w9hzxywutevsst7k5cx',
  '/verify/notarealnaddr',
  '/shop/abc/def',
  '/spot/abc/def',
  '/event/abc/def',
  '/crew/abc/def',
  '/messages/group/abc123',
];
const problems = [];
let lastText = '';

for (const route of ROUTES) {
  const url = appUrl.replace(/\/$/, '') + '/#' + route;
  await send('Page.navigate', { url });

  let mounted = false;
  let stable = 0;
  const deadline = Date.now() + timeoutMs;
  while (Date.now() < deadline) {
    lastText = (await evalJS('document.body ? document.body.innerText : ""')) || '';
    const kids = await evalJS('document.getElementById("root")?.children.length ?? 0');
    if (kids > 0) mounted = true;
    // Stop early on a hard crash; otherwise require the page to stay rendered
    // for a few polls so a lazy route chunk has time to load (and, if broken,
    // to fall through to the error boundary).
    if (/failed to start|this page slammed/i.test(lastText)) break;
    if (mounted) { stable++; if (stable >= 3) break; }
    await sleep(500);
  }

  const crashed = /failed to start|this page slammed/i.test(lastText);
  if (!mounted) problems.push(`${route}: #root never mounted`);
  if (crashed) problems.push(`${route}: crash screen`);
}

ws.close();
const ok = problems.length === 0 && exceptions.length === 0;

if (ok) {
  log(`PASS — production bundle booted and mounted (${ROUTES.join(', ')}).`);
} else {
  console.error('[smoke-test] FAIL — the built bundle did not boot:');
  for (const p of problems) console.error('  • ' + p);
  for (const e of exceptions.slice(0, 4)) console.error('  • ' + e.split('\n')[0]);
  console.error('  body: ' + JSON.stringify(lastText.slice(0, 160)));
}
cleanup();
process.exit(ok ? 0 : 1);