fixed issue with login page.

app/api/auth/[...nextauth]/route.js

@@ -93,7 +93,29 @@ export function createToken(payload) {
 
 export function verifyToken(token) {
   try {
-    return jwt.verify(token, JWT_SECRET);
+    if (!token) return null;
+    const parts = token.split(".");
+    if (parts.length === 2) {
+      // Custom token verification
+      const [encodedData, signature] = parts;
+      const expectedSignature = Buffer.from(
+        `${encodedData}.${JWT_SECRET}`
+      ).toString("base64");
+      if (signature !== expectedSignature) {
+        console.error("Signature mismatch");
+        return null;
+      }
+      const data = JSON.parse(
+        Buffer.from(encodedData, "base64").toString("utf-8")
+      );
+      if (data.exp && data.exp < Math.floor(Date.now() / 1000)) return null;
+      return data;
+    } else if (parts.length === 3) {
+      // Standard JWT verification
+      return jwt.verify(token, JWT_SECRET);
+    } else {
+      throw new Error("Invalid token format");
+    }
   } catch (error) {
     console.error("Token verification error:", error);
     return null;

app/api/auth/check/route.js

@@ -0,0 +1,55 @@
+import { getServerSession } from "next-auth/next";
+import { authOptions } from "../[...nextauth]/route";
+
+export async function GET(req) {
+  try {
+    const session = await getServerSession(authOptions);
+
+    if (!session) {
+      return new Response(
+        JSON.stringify({
+          authenticated: false,
+          message: "Not authenticated",
+        }),
+        {
+          status: 401,
+          headers: {
+            "Content-Type": "application/json",
+          },
+        }
+      );
+    }
+
+    return new Response(
+      JSON.stringify({
+        authenticated: true,
+        user: {
+          id: session.user.id,
+          username: session.user.username,
+          role: session.user.role,
+          teamId: session.user.teamId,
+        },
+      }),
+      {
+        status: 200,
+        headers: {
+          "Content-Type": "application/json",
+        },
+      }
+    );
+  } catch (error) {
+    console.error("Session check error:", error);
+
+    return new Response(
+      JSON.stringify({
+        error: "Internal server error checking authentication",
+      }),
+      {
+        status: 500,
+        headers: {
+          "Content-Type": "application/json",
+        },
+      }
+    );
+  }
+}