(async function () {
  if (document.documentElement.hasAttribute('data-wf-item-slug')) return;
  var canon = document.querySelector('link[rel="canonical"]');
  if (canon && /\/404$/.test(canon.getAttribute('href'))) return;
  var lds = [].slice.call(document.querySelectorAll('script[type="application/ld+json"]'));
  if (lds.some(function (s) { return s.textContent.indexOf('BreadcrumbList') > -1; })) return;

  var origin = location.origin;
  var seg = location.pathname.replace(/\/$/, '').split('/').filter(Boolean);
  if (!seg.length) return;

  var label = function (slug) {
    return slug.split('-').map(function (w) { return w.charAt(0).toUpperCase() + w.slice(1); }).join(' ');
  };
  var findHub = async function (base) {
    var tries = [base, base + '/overview'];
    for (var i = 0; i < tries.length; i++) {
      try {
        var r = await fetch(tries[i], { method: 'HEAD', redirect: 'follow' });
        if (r.ok) return r.url.split(/[?#]/)[0].replace(/\/$/, '');
      } catch (e) {}
    }
    return null;
  };

  var current = origin + '/' + seg.join('/');
  var items = [{ name: 'Home', item: origin + '/' }];
  var isHubPage = false;
  for (var i = 0; i < seg.length - 1; i++) {
    var hub = await findHub('/' + seg.slice(0, i + 1).join('/'));
    if (!hub) continue;
    items.push({ name: label(seg[i]), item: hub });
    if (hub === current) { isHubPage = true; break; }
  }
  if (!isHubPage) items.push({ name: document.title.split('|')[0].trim(), item: current });

  var s = document.createElement('script');
  s.type = 'application/ld+json';
  s.text = JSON.stringify({
    '@context': 'https://schema.org',
    '@type': 'BreadcrumbList',
    'itemListElement': items.map(function (it, n) {
      return { '@type': 'ListItem', 'position': n + 1, 'name': it.name, 'item': it.item };
    })
  });
  document.head.appendChild(s);
})();