(function () {
  const EN_TEXT = "Free shipping within Saudi Arabia on orders of 240 SAR or more.";
  const SELECTOR = ".s-advertisement-content-main a";

  function updateBannerText() {
    const linkEl = document.querySelector(SELECTOR);
    if (!linkEl) return;

    // Cache original Arabic content once so we can safely restore it
    if (!linkEl.hasAttribute("data-original-text")) {
      linkEl.setAttribute("data-original-text", linkEl.innerHTML);
    }

    const isEnglish = document.documentElement.lang.toLowerCase().startsWith("en");

    if (isEnglish) {
      linkEl.textContent = EN_TEXT;
    } else {
      // Re-inject the original Arabic content if switching back
      const original = linkEl.getAttribute("data-original-text");
      if (original) {
        linkEl.innerHTML = original;
      }
    }
  }

  // Run on initial load
  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", updateBannerText);
  } else {
    updateBannerText();
  }

  // Observe changes to <html lang="..."> in case the site switches languages via SPA/AJAX
  const langObserver = new MutationObserver((mutations) => {
    for (const mutation of mutations) {
      if (mutation.type === "attributes" && mutation.attributeName === "lang") {
        updateBannerText();
      }
    }
  });

  langObserver.observe(document.documentElement, {
    attributes: true,
    attributeFilter: ["lang"]
  });

  // Fallback observer: if the banner renders asynchronously after the script executes
  const contentObserver = new MutationObserver(() => {
    const linkEl = document.querySelector(SELECTOR);
    if (linkEl && !linkEl.hasAttribute("data-original-text")) {
      updateBannerText();
    }
  });

  contentObserver.observe(document.body || document.documentElement, {
    childList: true,
    subtree: true
  });
})();