Wrap Third Party APIs - Ideal Interface

apple-pay-button.js

beginApplePay() {
  // ... snip!

  this.get('applePay').charge(paymentRequest).then({ result, notify } => {
    this.get('onChargeSuccess')({
      shippingContact: result.shippingContact,
      token: result.token.id,
      price,
      item,
      description: `201 Created Sticker: ${item.get('name')}`
    }).then(() => {
      trySet(this, 'successMessage', 'Purchase is on its way');
      notify.success();
    }).catch(() => {
      trySet(this, 'errorMessage', 'Purchase failed');
      notify.failure();
    });
  }).catch(error => {
    trySet(this, 'errorMessage', error.message);
  });
}