(function () {
  var root = document.querySelector('.article-advisor-block');
  if (!root) return;

  var toastTimer;
  var toast = document.querySelector('#article-advisor-toast');
  var backdrop = document.querySelector('#article-sheet-backdrop');
  var sheet = document.querySelector('#article-bottom-sheet');

  function showToast(message) {
    if (!toast) return;
    window.clearTimeout(toastTimer);
    toast.textContent = message;
    toast.classList.add('is-visible');
    toastTimer = window.setTimeout(function () {
      toast.classList.remove('is-visible');
    }, 1800);
  }

  function showSheet(opts) {
    var kicker = document.querySelector('#article-sheet-kicker');
    var title = document.querySelector('#article-sheet-title');
    var imgWrap = document.querySelector('#article-sheet-cert-img');
    if (kicker) kicker.textContent = opts.kicker || '';
    if (title) title.textContent = opts.title || '咨询师资质';
    if (imgWrap) {
      if (opts.image) {
        imgWrap.innerHTML =
          '<img src="' + opts.image + '" alt="专业证书" data-cert-preview="' + opts.image + '">' +
          '<p class="sheet-cert-tip">点击证书可放大查看，支持旋转</p>';
        imgWrap.hidden = false;
      } else {
        imgWrap.innerHTML = '';
        imgWrap.hidden = true;
      }
    }
    if (backdrop) backdrop.hidden = false;
    if (sheet) sheet.hidden = false;
    document.body.style.overflow = 'hidden';
  }

  function closeSheet() {
    if (window.ExpertCertViewer && window.ExpertCertViewer.isOpen()) {
      window.ExpertCertViewer.close();
    }
    if (backdrop) backdrop.hidden = true;
    if (sheet) sheet.hidden = true;
    document.body.style.overflow = '';
  }

  document.addEventListener('click', function (event) {
    var preview = event.target.closest('[data-cert-preview]');
    if (preview) {
      event.preventDefault();
      event.stopPropagation();
      if (window.ExpertCertViewer) {
        window.ExpertCertViewer.open(preview.getAttribute('data-cert-preview') || preview.getAttribute('src'));
      }
      return;
    }

    var certBtn = event.target.closest('[data-certificate-open]');
    if (certBtn && root.contains(certBtn)) {
      event.preventDefault();
      event.stopPropagation();
      var img = certBtn.getAttribute('data-certify-image') || '';
      if (!img) {
        showToast('暂无证书图片');
        return;
      }
      showSheet({
        kicker: '专业证书',
        title: certBtn.getAttribute('data-qual') || '咨询师资质',
        image: img
      });
      return;
    }

    if (event.target.closest('.card-button.case') || event.target.closest('a.card-button')) {
      return;
    }

    var goto = event.target.closest('[data-goto-detail]');
    if (goto && root.contains(goto)) {
      var card = goto.closest('.advisor-card');
      if (card && card.getAttribute('data-url')) {
        window.location.href = card.getAttribute('data-url');
      }
    }
  });

  var closeBtn = document.querySelector('#article-sheet-close');
  var primaryBtn = document.querySelector('#article-sheet-primary');
  if (closeBtn) closeBtn.addEventListener('click', closeSheet);
  if (primaryBtn) primaryBtn.addEventListener('click', closeSheet);
  if (backdrop) backdrop.addEventListener('click', closeSheet);
  document.addEventListener('keydown', function (event) {
    if (event.key === 'Escape') {
      if (window.ExpertCertViewer && window.ExpertCertViewer.isOpen()) {
        return;
      }
      closeSheet();
    }
  });
})();