feat: implement unique visitor tracking using Redis and display count on home page

app/page.tsx

@@ -3,9 +3,27 @@ import { Card, CardHeader } from "@/components/ui/card";
 import Image from "next/image";
 import { getFollowerCounts } from "@/lib/followers";
 import { LinkCard } from "@/components/LinkCard";
+import { getRedisClient } from "@/lib/redis";
+import { headers } from "next/headers";
+import { Users } from "lucide-react";
+import { Kbd } from "@/components/ui/kbd";
 
 export default async function Home() {
   const counts = await getFollowerCounts();
+  const headersList = await headers();
+  const ip = headersList.get("x-forwarded-for") || headersList.get("x-real-ip") || "unknown";
+  
+  let visitorCount = 0;
+  try {
+    const redis = await getRedisClient();
+    if (ip !== "unknown") {
+      await redis.sadd("erika:unique_visitors", ip);
+    }
+    visitorCount = await redis.scard("erika:unique_visitors");
+  } catch (e) {
+    console.error("Failed to track visitor:", e);
+  }
+
   const jsonLd = {
     "@context": "https://schema.org",
     "@type": "ProfilePage",
@@ -20,6 +38,7 @@ export default async function Home() {
     },
   };
 
+
   return (
     <main className="flex min-h-screen flex-col items-center justify-center p-4">
       <script
@@ -50,6 +69,14 @@ export default async function Home() {
             <p className="text-sm text-zinc-400 mt-1">
               {config.profile.desc}
             </p>
+            {visitorCount > 0 && (
+              <div className="mt-3 flex justify-center">
+                <Kbd>
+                  <Users className="size-3.5" />
+                  <span>{visitorCount} Unique Visitors</span>
+                </Kbd>
+              </div>
+            )}
           </div>
         </CardHeader>
 

lib/config.ts

@@ -56,11 +56,11 @@ export const config_p2 = {
       desc: "กรอกฟอร์ม",
       icon: "/icon/form.webp",
     },
-    {
+    // {
-      name: "Minecraft",
+    //   name: "Minecraft",
-      link: "/minecraft",
+    //   link: "/minecraft",
-      desc: "เข้าเซิร์ฟเวอร์ Minecraft",
+    //   desc: "เข้าเซิร์ฟเวอร์ Minecraft",
-      icon: "/icon/mc.webp",
+    //   icon: "/icon/mc.webp",
-    }
+    // }
   ] as LinkConfig[]
 };

lib/redis.ts

@@ -0,0 +1,15 @@
+// @ts-ignore
+import { RedisClient } from "bun";
+
+const globalForRedis = global as unknown as { redis: RedisClient };
+
+export const getRedisClient = async () => {
+  if (!globalForRedis.redis) {
+    globalForRedis.redis = new RedisClient(process.env.REDIS_URL || "");
+  }
+  const client = globalForRedis.redis;
+  if (!client.connected) {
+    await client.connect();
+  }
+  return client;
+};

next.config.ts

@@ -1,6 +1,7 @@
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
+  serverExternalPackages: ["bun"],
   allowedDevOrigins: ['test.gunshiz.top'],
   images: {
     remotePatterns: [