update

index.js

@@ -275,6 +275,38 @@ app.get("/runtime", async (req, res) => {
   res.send("Running lifetime");
 })
 
+app.post("/api/v2/key/upgrade-key", authenticateApiKey, apiLimiter, async (req, res) => {
+  try {
+    const userIdNumber = Number(req.query.user_id);
+
+    if (isNaN(userIdNumber)) {
+      return res.status(400).json({ error: "Invalid or missing user_id" });
+    }
+
+    const existingUser = await ApiKey.findOne({ owner: userIdNumber });
+
+    if (!existingUser) {
+      return res.status(404).json({ error: "API key not found" });
+    }
+
+    const expirationDate = new Date();
+    expirationDate.setDate(expirationDate.getDate() + 5000);
+
+    existingUser.expiresAt = expirationDate;
+    existingUser.type = "premium";
+    await existingUser.save();
+
+    res.json({
+      apiKey: existingUser.key,
+      createdAt: existingUser.createdAt,
+      expiresAt: expirationDate,
+      owner: userIdNumber,
+      type: "premium"
+    });
+  } catch (error) {
+    res.status(500).json({ error: `Key upgrade failed: ${error.message}` });
+  }
+});
 
 app.post('/api/v2/key/generate-key', authenticateApiKey, apiLimiter, async (req, res) => {
   try {
@@ -341,7 +373,7 @@ app.post("/api/v1/key/revoked-key", authenticateApiKey, apiLimiter, async (req,
 
         if (!existingUser) {
           return res.status(404).json({ error: "API key not found" });
-      }
+        }
 
         if (existingUser) {
           return res.status(200).json({