head.html

<!-- Modifying this file will impact your performance -->
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<meta name="head-loaded" content="false"/>
<script>
  const userAgentMeta = document.querySelector('meta[name="hreflinksuseragents"]');
  const allowedAgents = userAgentMeta && userAgentMeta.content.split(',');
  const userAgentString = window.navigator.userAgent;
  const isAllowedAgent = allowedAgents && allowedAgents.some((agent) => userAgentString.includes(agent.trim()));

  const flagMeta = document.querySelector('meta[name="head-loaded"]');
  const headAlreadyLoaded = flagMeta.content === 'true';
  const LOCALES = ['ae_ar', 'ae_en', 'africa', 'ar', 'at', 'au', 'be_en', 'be_fr', 'be_nl', 'bg', 'br', 'ca_fr', 'ca', 'ch_de', 'ch_fr', 'ch_it', 'cl', 'cn', 'co', 'cr', 'cy_en', 'cz', 'de', 'dk', 'ec', 'ee', 'eg_ar', 'eg_en', 'el', 'es', 'fi', 'fr', 'gr_el', 'gr_en', 'gt', 'hk_en', 'hk_zh', 'hu', 'id_en', 'id_id', 'ie', 'il_en', 'il_he', 'in_hi', 'in', 'it', 'jp', 'kr', 'kw_ar', 'kw_en', 'la', 'langstore', 'lt', 'lu_de', 'lu_en', 'lu_fr', 'lv', 'mena_ar', 'mena_en', 'mt', 'mx', 'my_en', 'my_ms', 'ng', 'nl', 'no', 'nz', 'pe', 'ph_en', 'ph_fil', 'pl', 'pr', 'pt', 'qa_ar', 'qa_en', 'ro', 'ru', 'sa_ar', 'sa_en', 'se', 'sg', 'si', 'sk', 'th_en', 'th_th', 'tr', 'tw', 'ua', 'uk', 'vn_en', 'vn_vi', 'za'];

  (() => {
    function buildLink(language, url) {
      const link = document.createElement('link');
      link.setAttribute('rel', 'alternate');
      link.setAttribute('hreflang', language);
      link.setAttribute('href', url);
      return link;
    }

    async function fetchAndParseSitemap() {
      const sitemapOrigin = 'https://www.adobe.com';
      const { origin, pathname } = window.location;

      let sitemapPath = '/events/sitemap.xml';
      const localeMatch = LOCALES.find(locale => pathname.startsWith(`/${locale}/`));

      if (localeMatch) {
        sitemapPath = `/${localeMatch}/events/sitemap.xml`;
      }
      
      try {
        const controller = new AbortController();
        const timeoutId = setTimeout(() => controller.abort(), 5000);
        let response;
        try {
          response = await fetch(`${origin}${sitemapPath}`, { signal: controller.signal });
        } finally {
          clearTimeout(timeoutId);
        }
        if (!response.ok) {
          console.warn('Failed to fetch sitemap:', response.status);
          return;
        }
        
        const xmlText = await response.text();
        const parser = new DOMParser();
        const xmlDoc = parser.parseFromString(xmlText, 'text/xml');
        const parseError = xmlDoc.querySelector('parsererror');
        if (parseError) {
          return;
        }
        
        const urlElements = xmlDoc.querySelectorAll('url');
        let currentUrlElement = null;
        const correctedPath = pathname.endsWith('.html') ? pathname : `${pathname}.html`;
        const isLocalRoot = localeMatch && `${sitemapOrigin}/${localeMatch}/` === `${sitemapOrigin}${pathname}`;
        const rootPage = isLocalRoot ? `${sitemapOrigin}/${localeMatch}/` : `${sitemapOrigin}/`; 
        const currentPageUrl = pathname !== '/' && pathname !== `/${localeMatch}/` ? `${sitemapOrigin}${correctedPath}` : `${rootPage}`;

        for (const urlElement of urlElements) {
          const loc = urlElement.querySelector('loc')?.textContent;
          if (loc === currentPageUrl || loc === currentPageUrl.replace(/\/$/, '')) {
            currentUrlElement = urlElement;
            break;
          }
        }
        
        if (!currentUrlElement) {
          console.warn('Current page not found in sitemap');
          return;
        }
        
        const alternateLinks = currentUrlElement.querySelectorAll('link[rel="alternate"]');
        const linkElements = [];

        alternateLinks.forEach(altLink => {
          const hreflang = altLink.getAttribute('hreflang');
          const href = altLink.getAttribute('href');
          
          if (hreflang && href) {
            linkElements.push(buildLink(hreflang, href));
          }
        });
        
        const titleElement = document.head.querySelector('title');
        if (linkElements.length > 0 && titleElement) {
          titleElement.after(...linkElements);
        }
      } catch (error) {
        console.error('Error fetching or parsing sitemap:', error);
      }
    } 

    if (isAllowedAgent && !headAlreadyLoaded) {
      fetchAndParseSitemap();
    }
  })();

  flagMeta.content = 'true';
</script>
<script src="/events/scripts/fallback.js" nomodule></script>
<script src="/events/scripts/scripts.js" type="module"></script>
<link rel="stylesheet" href="/events/styles/styles.css">
<style>body { display: none; }</style>
<link rel="icon" href="data:,">