/**
 * Loads Leading V2 header/footer modules (separate from layout.js nav/footer).
 */
(function () {
  var HEADER_URL = "/components/leading-v2-header.html";
  var FOOTER_URL = "/components/leading-v2-footer.html";

  function fetchText(url) {
    return fetch(url, { credentials: "same-origin" }).then(function (res) {
      if (!res.ok) throw new Error("Failed to load " + url + " (" + res.status + ")");
      return res.text();
    });
  }

  function injectHtml(containerId, html) {
    var el = document.getElementById(containerId);
    if (!el) return null;
    el.innerHTML = html;
    return el;
  }

  function updateCopyrightYear(root) {
    var year = String(new Date().getFullYear());
    root.querySelectorAll("[data-lv2-year]").forEach(function (el) {
      el.textContent = year;
    });
  }

  function initLayoutV2() {
    var headerContainer = document.getElementById("header-v2-container");
    var footerContainer = document.getElementById("footer-v2-container");
    if (!headerContainer && !footerContainer) return;

    var tasks = [];
    tasks.push(headerContainer ? fetchText(HEADER_URL) : Promise.resolve(null));
    tasks.push(footerContainer ? fetchText(FOOTER_URL) : Promise.resolve(null));

    Promise.all(tasks)
      .then(function (parts) {
        var headerHtml = parts[0];
        var footerHtml = parts[1];

        if (headerHtml) {
          injectHtml("header-v2-container", headerHtml);
        }

        if (footerHtml) {
          var footerRoot = injectHtml("footer-v2-container", footerHtml);
          if (footerRoot) updateCopyrightYear(footerRoot);
        }

        document.dispatchEvent(new CustomEvent("aifo:layout-v2-ready"));
      })
      .catch(function (err) {
        console.error("[layout-v2.js]", err);
      });
  }

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", initLayoutV2);
  } else {
    initLayoutV2();
  }
})();