adding support to google-pay

.eslintrc.js

@@ -3,7 +3,8 @@ module.exports = {
     browser: true,
     es6: true,
     node: true,
-    mocha: true
+    mocha: true,
+    sinon: true,
   },
   extends: 'eslint:recommended',
   globals: {

lib/recurly.js

@@ -17,6 +17,7 @@ import version from './recurly/version';
 import { tokenDispatcher as token } from './recurly/token';
 import { factory as Adyen } from './recurly/adyen';
 import { factory as ApplePay } from './recurly/apple-pay';
+import { factory as GooglePay } from './recurly/google-pay';
 import { factory as BankRedirect } from './recurly/bank-redirect';
 import { factory as Elements } from './recurly/elements';
 import { factory as Frame } from './recurly/frame';
@@ -107,6 +108,7 @@ const DEFAULTS = {
 export class Recurly extends Emitter {
   Adyen = Adyen;
   ApplePay = ApplePay;
+  GooglePay = GooglePay;
   BankRedirect = BankRedirect;
   coupon = coupon;
   Elements = Elements;

lib/recurly/errors.js

@@ -2,7 +2,45 @@ import { Reporter } from './reporter';
 import squish from 'string-squish';
 
 const BASE_URL = 'https://dev.recurly.com/docs/recurly-js-';
+const GOOGLE_PAY_ERRORS = [
+  {
+    code: 'google-pay-not-available',
+    message: 'Google Pay is not available',
+    classification: 'environment'
+  },
+  {
+    code: 'google-pay-config-missing',
+    message: c => `Missing Google Pay configuration option: '${c.opt}'`,
+    classification: 'merchant'
+  },
+  {
+    code: 'google-pay-not-configured',
+    message: 'There are no Payment Methods enabled to support Google Pay',
+    classification: 'merchant'
+  },
+  {
+    code: 'google-pay-config-invalid',
+    message: c => `Google Pay configuration option '${c.opt}' is not among your available options: ${c.set}.
+                   Please refer to your site configuration if the available options is incorrect.`,
+    classification: 'merchant'
+  },
+  {
+    code: 'google-pay-init-error',
+    message: c => {
+      let message = 'Google Pay did not initialize due to a fatal error';
+      if (c.err) message += `: ${c.err.message}`;
+      return message;
+    },
+    classification: 'internal'
+  },
+  {
+    code: 'google-pay-payment-failure',
+    message: 'Google Pay could not get the Payment Data',
+    classification: 'internal'
+  },
+];
 const ERRORS = [
+  ...GOOGLE_PAY_ERRORS,
   {
     code: 'not-configured',
     message: 'Not configured. You must first call recurly.configure().',

lib/recurly/google-pay/google-pay.js

@@ -0,0 +1,156 @@
+import Emitter from 'component-emitter';
+import { normalize } from '../../util/normalize';
+import { FIELDS as TOKEN_FIELDS } from '../token';
+import recurlyError from '../errors';
+import { payWithGoogle } from './pay-with-google';
+
+const getRecurlyInputsFromHtmlForm = ({ $form, inputNames }) => $form ? normalize($form, inputNames).values : {};
+
+const getBillingAddressFromGoogle = ({ paymentData }) => {
+  const googleBillingAddress = paymentData?.paymentMethodData?.info?.billingAddress || {};
+  const {
+    name,
+    address1,
+    address2,
+    countryCode,
+    postalCode,
+    locality,
+    administrativeArea,
+  } = googleBillingAddress;
+
+  const fullNameSplitted = (name || '').trim().split(' ');
+  const firstName = fullNameSplitted[0];
+  const lastName = fullNameSplitted.slice(1).join(' ');
+
+  return {
+    first_name: firstName,
+    last_name: lastName,
+    address1,
+    address2,
+    city: locality,
+    state: administrativeArea,
+    postal_code: postalCode,
+    country: countryCode,
+  };
+};
+
+const createRecurlyToken = ({ recurly, paymentData }) => {
+  const userInputs = getRecurlyInputsFromHtmlForm({ $form: recurly.config.form, inputNames: TOKEN_FIELDS });
+  const userBillingAddress = getBillingAddressFromGoogle({ paymentData });
+  const userInputsOverrideBillingAddress = Object.keys(userInputs).some(k => k in userBillingAddress);
+
+  const data = {
+    ...userInputs,
+    ...(!userInputsOverrideBillingAddress && userBillingAddress),
+    google_pay_token: paymentData?.paymentMethodData?.tokenizationData?.token,
+  };
+
+  return recurly.request.post({ route: '/google_pay/token', data });
+};
+
+const validateGooglePayOptions = options => {
+  const requiredKeys = ['googleMerchantId', 'total', 'country', 'currency'];
+  requiredKeys.forEach(key => {
+    if (options[key] === undefined) {
+      throw recurlyError('google-pay-config-missing', { opt: key });
+    }
+  });
+
+  return options;
+}
+
+const validateRecurlyMerchantInfo = ({ recurlyMerchantInfo }) => {
+  if (recurlyMerchantInfo.paymentMethods.length === 0) {
+    throw recurlyError('google-pay-not-configured');
+  }
+
+  return recurlyMerchantInfo;
+};
+
+const getGoogleInfoFromMerchantInfo = ({ recurlyMerchantInfo, options }) => {
+  const { siteMode, paymentMethods } = recurlyMerchantInfo;
+  const {
+    googleMerchantId,
+    googleBusinessName,
+    total,
+    country,
+    currency,
+    requireBillingAddress,
+  } = options;
+
+  const environment = siteMode === 'production' ? 'PRODUCTION' : 'TEST';
+  const googlePayConfig = {
+    apiVersion: 2,
+    apiVersionMinor: 0,
+    allowedPaymentMethods: paymentMethods.map(({ cardNetworks, authMethods, paymentGateway, direct }) => ({
+      type: 'CARD',
+      parameters: {
+        allowedCardNetworks: cardNetworks,
+        allowedAuthMethods: authMethods,
+        ...(requireBillingAddress && {
+          billingAddressRequired: true,
+          billingAddressParameters: {
+            format: 'FULL',
+          },
+        }),
+      },
+      tokenizationSpecification: {
+        ...(paymentGateway && {
+          type: 'PAYMENT_GATEWAY',
+          parameters: paymentGateway,
+        }),
+        ...(direct && {
+          type: 'DIRECT',
+          parameters: direct,
+        }),
+      },
+    })),
+  };
+  const paymentDataRequest = {
+    ...googlePayConfig,
+    merchantInfo: {
+      merchantId: googleMerchantId,
+      merchantName: googleBusinessName,
+    },
+    transactionInfo: {
+      totalPriceStatus: 'FINAL', // only when the price will nto change
+      totalPrice: total,
+      currencyCode: currency,
+      countryCode: country
+    },
+  };
+
+  return { environment, googlePayConfig, paymentDataRequest };
+};
+
+const getGooglePayInfo = ({ recurly, options }) => {
+  const { country, currency, gateway } = options;
+  const data = { country, currency, gateway };
+
+  return new Promise((resolve, reject) => {
+      try {
+        validateGooglePayOptions(options);
+        resolve();
+      } catch (err) {
+        reject(err);
+      }
+    })
+    .then(() => recurly.request.get({ route: '/google_pay/info', data }))
+    .then(recurlyMerchantInfo => validateRecurlyMerchantInfo({ recurlyMerchantInfo, options }))
+    .then(recurlyMerchantInfo => getGoogleInfoFromMerchantInfo({ recurlyMerchantInfo, options }));
+};
+
+const googlePay = (recurly, options) => {
+  const emitter = new Emitter();
+
+  getGooglePayInfo({ recurly, options })
+    .then(googlePayInfo => payWithGoogle({ googlePayInfo, options }))
+    .then(({ $button, getPaymentData }) => emitter.emit('ready', $button) && getPaymentData())
+    .then(paymentData => createRecurlyToken({ recurly, paymentData }))
+    .then(token => emitter.emit('token', token))
+    .catch(err => emitter.emit('error', err));
+
+  return emitter;
+};
+
+export { googlePay };

lib/recurly/google-pay/index.js

@@ -0,0 +1,13 @@
+import { googlePay } from './google-pay';
+
+/**
+ * Returns a GooglePay instance.
+ *
+ * @param  {Object} options
+ * @return {GooglePay}
+ */
+export function factory (options) {
+  const recurly = this;
+
+  return googlePay(recurly, options);
+}

lib/recurly/google-pay/pay-with-google.js

@@ -0,0 +1,50 @@
+import { loadLibs } from '../../util/dom';
+import recurlyError from '../errors';
+
+const GOOGLE_PAY_LIB_URL = 'https://pay.google.com/gp/p/js/pay.js';
+
+const payWithGoogle = ({
+  googlePayInfo: {
+    environment,
+    googlePayConfig,
+    paymentDataRequest,
+  },
+  options: {
+    buttonOptions,
+  },
+}) => {
+  let googlePayClient;
+  let deferredPaymentData;
+
+  const paymentData = new Promise((resolve, reject) => {
+    deferredPaymentData = { resolve, reject };
+  });
+
+  const onGooglePayButtonClicked = () => googlePayClient.loadPaymentData(paymentDataRequest)
+    .then(deferredPaymentData.resolve)
+    .catch(err => deferredPaymentData.reject(recurlyError('google-pay-payment-failure', { err })));
+
+  return loadLibs(GOOGLE_PAY_LIB_URL)
+    .then(() => {
+      googlePayClient = new window.google.payments.api.PaymentsClient({ environment });
+      return googlePayClient.isReadyToPay(googlePayConfig);
+    })
+    .catch(err => {
+      throw recurlyError('google-pay-init-error', { err });
+    })
+    .then(({ result: isReadyToPay }) => {
+      if (!isReadyToPay) {
+        throw recurlyError('google-pay-not-available');
+      }
+    })
+    .then(() => googlePayClient.createButton({
+      ...buttonOptions,
+      onClick: onGooglePayButtonClicked
+    }))
+    .then($button => ({
+      $button,
+      getPaymentData: () => paymentData,
+    }));
+};
+
+export { payWithGoogle };

lib/util/dom.js

@@ -4,6 +4,8 @@
 
 var slug = require('to-slug-case');
 var each = require('component-each');
+const Promise = require('promise');
+const loadScript = require('load-script');
 
 /**
  * expose
@@ -14,7 +16,8 @@ module.exports = {
   data: data,
   element: element,
   findNodeInParents: findNodeInParents,
-  value: value
+  value: value,
+  loadLibs,
 };
 
 /**
@@ -209,3 +212,10 @@ function createHiddenInput (attributes = {}) {
 
   return hidden;
 }
+
+function loadLibs (...libUrls) {
+  const promisify = Promise.denodeify
+  const loadLib = promisify(loadScript);
+
+  return Promise.all(libUrls.map(url => loadLib(url)));
+}