formkeep-stripe-checkout-2.js

// formkeep-stripe-checkout.js on webtask.io

// Load NPM dependencies (specified in the settings)
const webtask = require('webtask-tools');
const express = require('express');
const axios = require('axios');
// Add new dependencies
const bodyParser = require('body-parser');
const stripe = require('stripe');

// Initialize an express app
const app = express();

// Use the `body-parser` middleware to easily parse the from from the request
app.use(bodyParser.urlencoded({ extended: false }));

// Add a single endpoint at the root, to handle the request
app.post('', (req, res) => {
  // Grab the amount from the request body
  const amount = parseInt(req.body.amount);

  // Initialize a helper to connect with the Stripe API
  const stripeConnection = stripe(req.webtaskContext.secrets.stripeKey);
  // Grab the Stripe token from the request body
  // (this is the placeholder for the customer's card that Stripe gives us)
  const stripeToken = req.body.stripeToken;

  const formkeepUrl = req.webtaskContext.secrets.formkeepUrl;
  const formkeepHeaders = { "Content-Type": "application/json" };
  const formkeepData = {
    // Use the actual form data to store the donor's info in FormKeep
    email: req.body.stripeEmail,
    amount: `$${amount / 100.0}`,
    phone: req.body.phone,
    message: req.body.message
  };
  
  // REMOVE:
  // return axios.post(formkeepUrl, formkeepData, { headers: formkeepHeaders })

  // Create the charge in Stripe
  return stripeConnection.charges.create({
    amount,
    currency: 'usd',
    source: stripeToken,
    description: 'Donation to our cause'
  })
  .then(function() {
    // If the charge succeeds, post the information to FormKeep
    // There you can query all the data, export it and setup "thank you" emails
    return axios.post(formkeepUrl, formkeepData, { headers: formkeepHeaders });
  })
  .then(function() {
    // If it succeeds, redirect to the FormKeep thank you page
    // (you can then add a different page to thank your donors)
    res.redirect(301, `https://formkeep.com/thanks?h=Thanks&s=Your donation was received`);
  })
  .catch(function(err) {
    // If it fails, redirect to the FormKeep thank you page
    // (but with an error message)
    console.error(err);
    res.redirect(301, `https://formkeep.com/thanks?h=Sorry&s=Your payment couldn't be processed`);
  });
});

// Use webtask helpers to export the express app as webtask serverless function
module.exports = webtask.fromExpress(app);