feat: add middleware route protection

app/api/signup/route.ts

@@ -0,0 +1,28 @@
+import { PrismaClient } from '@prisma/client';
+import type { NextApiRequest, NextApiResponse } from 'next';
+
+const prisma = new PrismaClient();
+
+export default async function handler(
+  req: NextApiRequest,
+  res: NextApiResponse
+) {
+  if (req.method === 'POST') {
+    const { email } = req.body;
+    try {
+      const user = await prisma.user.create({
+        data: {
+          email
+        }
+      });
+      return res.status(200).json(user);
+    } catch (error) {
+      console.error('Failed to create user:', error);
+      return res.status(500).json({ error: 'Failed to create user' });
+    }
+  } else {
+    // Handle any other HTTP method
+    res.setHeader('Allow', ['POST']);
+    res.status(405).end(`Method ${req.method} Not Allowed`);
+  }
+}