// Teknav Embed Loader — paste this script tag on any page to embed a Teknav widget.
// Usage:
//   <script src="https://www.teknav.ir/embed-loader.js"
//     data-type="glossary"
//     data-slug="vector-database"
//     data-width="480"></script>
(function () {
  var scripts = document.querySelectorAll('script[src*="embed-loader.js"]');
  var script = scripts[scripts.length - 1];
  if (!script) return;

  var type = script.getAttribute('data-type') || 'glossary';
  var slug = script.getAttribute('data-slug') || '';
  var width = script.getAttribute('data-width') || '480';
  var origin = 'https://www.teknav.ir';

  if (!slug) {
    console.warn('[Teknav] embed-loader: data-slug attribute is required');
    return;
  }

  var iframe = document.createElement('iframe');
  iframe.src = origin + '/embed/' + type + '/' + encodeURIComponent(slug);
  iframe.style.border = 'none';
  iframe.style.width = isNaN(Number(width)) ? width : width + 'px';
  iframe.style.maxWidth = '100%';
  iframe.style.height = '300px';
  iframe.style.overflow = 'hidden';
  iframe.setAttribute('loading', 'lazy');
  iframe.setAttribute('sandbox', 'allow-scripts allow-popups allow-same-origin');
  iframe.setAttribute('title', 'تکناو — ' + type + ': ' + slug);

  window.addEventListener('message', function (event) {
    if (event.origin !== origin) return;
    if (event.source !== iframe.contentWindow) return;
    if (event.data && event.data.type === 'resize' && typeof event.data.height === 'number') {
      iframe.style.height = (event.data.height + 24) + 'px';
    }
  });

  script.parentNode.insertBefore(iframe, script.nextSibling);
})();