Add create-admin script to package.json and set up /api/users route in server.js for user management functionality.

routes/contacts.js

@@ -0,0 +1,65 @@
+const express = require('express');
+const router = express.Router();
+const Contact = require('../models/Contact');
+
+// Get all contacts for a customer
+router.get('/customer/:customerId', async (req, res) => {
+  try {
+    const contacts = await Contact.find({ customer: req.params.customerId })
+      .sort({ createdAt: -1 })
+      .populate('user', 'username');
+    res.json(contacts);
+  } catch (error) {
+    console.error('Error fetching contacts:', error);
+    res.status(500).json({ message: 'Server error' });
+  }
+});
+
+// Create new contact
+router.post('/', async (req, res) => {
+  try {
+    const contact = new Contact({
+      ...req.body,
+      user: req.user.id, // This will be set by the auth middleware
+    });
+    await contact.save();
+    res.status(201).json(contact);
+  } catch (error) {
+    console.error('Error creating contact:', error);
+    res.status(500).json({ message: 'Server error' });
+  }
+});
+
+// Update contact
+router.put('/:id', async (req, res) => {
+  try {
+    const contact = await Contact.findByIdAndUpdate(
+      req.params.id,
+      req.body,
+      { new: true }
+    );
+    if (!contact) {
+      return res.status(404).json({ message: 'Contact not found' });
+    }
+    res.json(contact);
+  } catch (error) {
+    console.error('Error updating contact:', error);
+    res.status(500).json({ message: 'Server error' });
+  }
+});
+
+// Delete contact
+router.delete('/:id', async (req, res) => {
+  try {
+    const contact = await Contact.findByIdAndDelete(req.params.id);
+    if (!contact) {
+      return res.status(404).json({ message: 'Contact not found' });
+    }
+    res.json({ message: 'Contact deleted successfully' });
+  } catch (error) {
+    console.error('Error deleting contact:', error);
+    res.status(500).json({ message: 'Server error' });
+  }
+});
+
+module.exports = router;