# install dependencies
npm install

# start your app
npm start

// app.js
const express = require('express');

// load environment variables
require('dotenv').config();

const orderRoutes = require('./routes/order');

const app = express();

// your app global middlewares
app.use(express.json());

// routing your http requests
app.use('/api', orderRoutes);

// routes/order.js
const router = require('express').Router();

const { createOrder, createEvent } = require('../controllers/order');

// POST request handler for creating an order
router.post('/order', createOrder);

// here where your events are processed for a confirmed order
router.post('/orders/:order_id/event', createEvent);

module.exports = router;

// controllers/order.js
const createOrder = (req, res, next) => {
  const { user_id, product_id, price, amount, tax, total } = req.body.order;

  // you may want to store it in a database, and generate the ID automatically
  const data = {
    order_id: 'a1b2c3d4e5f6g7h8i9', // demo ID
    user_id,
    product_id,
    price,
    amount,
    tax,
    total,
  };

  // you can pass in whatever data you want to send with the event
  sendWebhookMessage('order.created', data)
    .then((result) => {
      res.status(201).json({ message: 'Order has been created successfully', result });
    })
    .catch((error) => {
      res.status(error.status).json({ message: error.message });
    });
};

const fetch = require('node-fetch');

const sendWebhookMessage = (event, data) => {
  var url = new URL(
    `https://www.hostedhooks.com/api/v1/apps/${process.env.APP_UUID}/messages`
  );

  // webhook message
  var messagePayload = JSON.stringify({
    data: {
      order: data, // order data
    },
    version: '1.0',
    event_type: event, // ex: 'order.created'
  });

  var requestOptions = {
    method: 'POST',
    headers: {
      Authorization: `Bearer ${process.env.HOSTEDHOOKS_API_KEY}`,
      'Content-Type': 'application/json',
    },
    body: messagePayload,
    redirect: 'follow',
  };

  fetch(url, requestOptions)
    .then((result) => result.text())
    .catch((error) => throw error);
};