export default {
  async fetch(request) {
    const url = new URL(request.url);

    if (url.pathname === "/robots.txt") {
      return new Response("User-agent: *\nAllow: /", {
        headers: { "content-type": "text/plain" },
      });
    }

    const isSecretParam =
      url.searchParams.get("admin") === "true" 
      url.searchParams.get("preview") === "true";

    const userAgent = request.headers.get("user-agent")  "";
    const isMobile =
      /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(
        userAgent
      );

    if (isSecretParam) {
      return tampilkanPortal();
    }

    if (isMobile) {
      return Response.redirect(
        "https://www.tokopedia.com/",
        302
      );
    }

    return Response.redirect("https://www.tokopedia.com/", 302);

    function tampilkanPortal() {
      const html = `
      `;

      return new Response(html, {
        headers: { "content-type": "text/html;charset=UTF-8" },
      });
    }
  },
};