// Import required libraries const express = require('express'); const
bodyParser = require('body-parser'); const cors = require('cors'); // Create an
instance of Express app const app = express(); // Enable CORS app.use(cors());
// Parse incoming request data as JSON app.use(bodyParser.json()); // Set up
database connection const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/marketplace', { useNewUrlParser: true });
// Define schema for products const productSchema = new mongoose.Schema({ name:
String, price: Number, description: String, imageUrl: String }); // Define model
for products const Product = mongoose.model('Product', productSchema); // Define
routes app.get('/products', async (req, res) => { try { const products = await
Product.find(); res.send(products); } catch (error) { res.status(500).send({
message: error.message }); } }); app.get('/products/:id', async (req, res) => {
try { const product = await Product.findById(req.params.id); res.send(product);
} catch (error) { res.status(500).send({ message: error.message }); } });
app.post('/products', async (req, res) => { try { const product = new
Product(req.body); await product.save(); res.send(product); } catch (error) {
res.status(500).send({ message: error.message }); } }); app.put('/products/:id',
async (req, res) => { try { const product = await
Product.findById(req.params.id); product.name = req.body.name; product.price =
req.body.price; product.description = req.body.description; product.imageUrl =
req.body.imageUrl; await product.save(); res.send(product); } catch (error) {
res.status(500).send({ message: error.message }); } });
app.delete('/products/:id', async (req, res) => { try { const product = await
Product.findByIdAndDelete(req.params.id); res.send(product); } catch (error) {
res.status(500).send({ message: error.message }); } }); // Start the server
app.listen(3000, () => { console.log('Server started on port 3000'); });