chore: Rename keyServer and extract to helper (#7256)

ui/app/api/auth/callback/github/route.ts

@@ -3,13 +3,11 @@
 import { NextResponse } from "next/server";
 
 import { signIn } from "@/auth.config";
-import { baseUrl } from "@/lib/helper";
+import { apiBaseUrl, baseUrl } from "@/lib/helper";
 
 export async function GET(req: Request) {
   const { searchParams } = new URL(req.url);
 
-  const keyServer = process.env.API_BASE_URL;
-
   const code = searchParams.get("code");
 
   const params = new URLSearchParams();
@@ -23,7 +21,7 @@ export async function GET(req: Request) {
   }
 
   try {
-    const response = await fetch(`${keyServer}/tokens/github`, {
+    const response = await fetch(`${apiBaseUrl}/tokens/github`, {
       method: "POST",
       headers: {
         "Content-Type": "application/x-www-form-urlencoded",