// Portable test launcher: built-in modules only; never invokes npm or a global Node.
const http = require('node:http');
const fs = require('node:fs');
const path = require('node:path');
const { spawn } = require('node:child_process');
const root = __dirname;
const types = { '.html':'text/html; charset=utf-8', '.js':'text/javascript; charset=utf-8', '.mjs':'text/javascript; charset=utf-8', '.css':'text/css; charset=utf-8', '.json':'application/json; charset=utf-8', '.svg':'image/svg+xml', '.png':'image/png', '.jpg':'image/jpeg', '.jpeg':'image/jpeg', '.gif':'image/gif', '.webp':'image/webp', '.ico':'image/x-icon', '.ttf':'font/ttf', '.woff':'font/woff', '.woff2':'font/woff2', '.txt':'text/plain; charset=utf-8' };
const server = http.createServer((req, res) => {
  if (!['GET','HEAD'].includes(req.method)) { res.writeHead(405); res.end(); return; }
  let pathname;
  try { pathname = decodeURIComponent(new URL(req.url, 'http://127.0.0.1').pathname); }
  catch { res.writeHead(400); res.end(); return; }
  // Dashboard is a production export and must be served from its own URL root.
  const dashboard = pathname === '/dashboard' || pathname.startsWith('/dashboard/');
  const dashboardPath = dashboard ? (pathname === '/dashboard' ? '/dashboard/' : pathname) : pathname;
  // Source Reference/static example paths keep their repository-relative imports.
  const reference = ['/docs/','/packages/','/src/','/public/'].some(prefix => pathname.startsWith(prefix));
  const base = dashboard ? path.join(root, 'dist-dashboard') : (reference ? root : path.join(root, 'storybook-static'));
  const relativePath = dashboard ? dashboardPath.slice('/dashboard'.length) || '/' : (pathname === '/favicon.ico' ? '/favicon.svg' : pathname);
  let file = path.resolve(base, '.' + relativePath);
  const relative = path.relative(base, file);
  if (relative.startsWith('..') || path.isAbsolute(relative) || pathname.includes('\\')) { res.writeHead(403); res.end(); return; }
  fs.stat(file, (error, stat) => {
    if (!error && stat.isDirectory()) file = path.join(file, 'index.html');
    fs.stat(file, (error, stat) => {
      if (error || !stat.isFile()) { res.writeHead(404); res.end('Not found'); return; }
      res.writeHead(200, { 'Content-Type': types[path.extname(file).toLowerCase()] || 'application/octet-stream', 'Content-Length':stat.size, 'Cache-Control':'no-store', 'X-Content-Type-Options':'nosniff' });
      if (req.method === 'HEAD') { res.end(); return; }
      const stream = fs.createReadStream(file);
      stream.on('error', () => res.destroy());
      stream.pipe(res);
    });
  });
});
let port = 6007;
let browserOpened = false;
function openDefaultBrowser(url) {
  if (browserOpened) return;
  browserOpened = true;
  const command = process.env.ComSpec || 'cmd.exe';
  const browser = spawn(command, ['/c', 'start', '', url], {
    detached: true,
    stdio: 'ignore',
    windowsHide: true
  });
  browser.on('error', error => {
    console.error(`Browser auto-open failed: ${error.message}`);
    console.error(`Open this address manually: ${url}`);
  });
  browser.unref();
}
server.on('error', error => {
  if (error.code === 'EADDRINUSE' || error.code === 'EACCES') {
    if (port === 0) { console.error(error.message); process.exitCode = 1; return; }
    port = port < 6023 ? port + 1 : 0;
    server.listen(port, '127.0.0.1');
  } else { console.error(error.message); process.exitCode = 1; }
});
server.on('listening', () => {
  const url = `http://127.0.0.1:${server.address().port}/`;
  console.log(`HM Design System Portable Test\nNode ${process.version} (${process.arch})\nStorybook: ${url}\nDashboard: ${url}dashboard/\nStatic status example: ${url}docs/patterns/dashboard-status-static.html\nPress Ctrl+C to stop this preview.\n`);
  openDefaultBrowser(url);
});
process.on('SIGINT', () => server.close(() => process.exit(0)));
process.on('SIGTERM', () => server.close(() => process.exit(0)));
server.listen(port, '127.0.0.1');