Code for creating a single product

create_product.js

module.exports.createProduct = async (req, res, next) => {
  const { name, sale_price, cost_price, quantity } = req.body;
  const newProduct = new Product({
    name,
    sale_price,
    cost_price,
    quantity,
  });

  newProduct.save((error, result) => {
    if (error) {
      res.json({ status: 'ERROR', message: 'Error creating product' });
    }

    if (result) {
      res.json({ status: 'SUCCESS', message: 'Product created' });
    } else {
      res.json({ status: 'FAILURE', message: 'Failed to create product' });
    }
  });
};