update_stripe_customer_from_netsuite.js

// Link: https://gist.github.com/iloveitaly/0e6d012d8dffa2444e0b36c0ec7b5781

define([ 'N/search', 'N/record', 'N/runtime', 'N/error', 'N/https' ],
function(search, record, runtime, error, https) {

var STRIPE_KEY = 'sk_test_123';
var STRIPE_ENDPOINT = 'https://api.stripe.com/v1/';

function afterSubmit(context) {
  if(context.type !== context.UserEventType.UPDATE) {
    return
  }

  linkStripeCustomer(context.currentRecord.id);
}

function linkStripeCustomer(customerInternalId) {
  // https://stoic.software/effective-suitescript/7-field-lookups-in-ss2/
  var stripeCustomerLookupKey = 'externalId';
  var entityData = search.lookupFields({
      type: s.Type.CUSTOMER,
      id: customerInternalId,
      columns: [ stripeCustomerLookupKey ]
  })

  var stripeCustomerId = entityData[stripeCustomerLookupKey];

  if(isEmpty(stripeCustomerId) || startWith('cus_', stripeCustomerId)) {
    log.debug("not a valid stripe customer ID");
    return
  }

  var headers = {};

  headers['Accept'] = 'application/json';
  headers['Authorization'] = STRIPE_KEY

  var requestURL = STRIPE_ENDPOINT + 'customers/' + stripeCustomerId;
  var params = '';

  // You'll want to assume that Stripe, NetSuite, or the network will fail.
  // In other words, you'll want this function to be deterministic. The best way to do this
  // https://stripe.com/docs/api#idempotent_requests
  var idempotencyKey = recordType + "-" + customerInternalId;
  params += "idempotency_key=" + encodeURIComponent(idempotencyKey) + "&";

  params += "metadata[netsuite_customer_id]=" + encodeURIComponent(stripeCustomerId) + "&";

  response = https.request({
    method : https.Method.POST,
    url : requestURL,
    body : params,
    headers : headers
  });

  var responseCode = response.code;
  var responseBody = response.body;

  // TODO check if successful response and update field on SO if processed successfully
}

});