const express = require('express');
const router = express.Router();
const Customer = require('../models/Customer');

// Get all customers
router.get('/', async (req, res) => {
  try {
    const customers = await Customer.find().sort({ name: 1 });
    res.json(customers);
  } catch (error) {
    console.error('Error fetching customers:', error);
    res.status(500).json({ message: 'Server error' });
  }
});

// Get single customer
router.get('/:id', async (req, res) => {
  try {
    const customer = await Customer.findById(req.params.id);
    if (!customer) {
      return res.status(404).json({ message: 'Customer not found' });
    }
    res.json(customer);
  } catch (error) {
    console.error('Error fetching customer:', error);
    res.status(500).json({ message: 'Server error' });
  }
});

// Create customer
router.post('/', async (req, res) => {
  try {
    const customer = new Customer(req.body);
    await customer.save();
    res.status(201).json(customer);
  } catch (error) {
    console.error('Error creating customer:', error);
    res.status(500).json({ message: 'Server error' });
  }
});

// Update customer
router.put('/:id', async (req, res) => {
  try {
    const customer = await Customer.findByIdAndUpdate(
      req.params.id,
      { ...req.body, updatedAt: Date.now() },
      { new: true }
    );
    if (!customer) {
      return res.status(404).json({ message: 'Customer not found' });
    }
    res.json(customer);
  } catch (error) {
    console.error('Error updating customer:', error);
    res.status(500).json({ message: 'Server error' });
  }
});

// Delete customer
router.delete('/:id', async (req, res) => {
  try {
    const customer = await Customer.findByIdAndDelete(req.params.id);
    if (!customer) {
      return res.status(404).json({ message: 'Customer not found' });
    }
    res.json({ message: 'Customer deleted successfully' });
  } catch (error) {
    console.error('Error deleting customer:', error);
    res.status(500).json({ message: 'Server error' });
  }
});

module.exports = router;