Support Google Play Games Service (parse-community#6147)

* Support Google Play Games Service

* clean up

* improve coverage

* more tests

Author: dplewis

spec/AuthenticationAdapters.spec.js

@@ -5,6 +5,7 @@ const defaultColumns = require('../lib/Controllers/SchemaController')
 const authenticationLoader = require('../lib/Adapters/Auth');
 const path = require('path');
 const responses = {
+  gpgames: { playerId: 'userId' },
   instagram: { data: { id: 'userId' } },
   janrainengage: { stat: 'ok', profile: { identifier: 'userId' } },
   janraincapture: { stat: 'ok', result: 'userId' },
@@ -22,6 +23,7 @@ describe('AuthenticationProviders', function() {
   [
     'apple',
     'gcenter',
+    'gpgames',
     'facebook',
     'facebookaccountkit',
     'github',
@@ -648,6 +650,37 @@ describe('google auth adapter', () => {
   });
 });
 
+describe('google play games service auth', () => {
+  const gpgames = require('../lib/Adapters/Auth/gpgames');
+  const httpsRequest = require('../lib/Adapters/Auth/httpsRequest');
+
+  it('validateAuthData should pass validation', async () => {
+    spyOn(httpsRequest, 'get').and.callFake(() => {
+      return Promise.resolve({ playerId: 'userId' });
+    });
+    await gpgames.validateAuthData({
+      id: 'userId',
+      access_token: 'access_token',
+    });
+  });
+
+  it('validateAuthData should throw error', async () => {
+    spyOn(httpsRequest, 'get').and.callFake(() => {
+      return Promise.resolve({ playerId: 'invalid' });
+    });
+    try {
+      await gpgames.validateAuthData({
+        id: 'userId',
+        access_token: 'access_token',
+      });
+    } catch (e) {
+      expect(e.message).toBe(
+        'Google Play Games Services - authData is invalid for this user.'
+      );
+    }
+  });
+});
+
 describe('oauth2 auth adapter', () => {
   const oauth2 = require('../lib/Adapters/Auth/oauth2');
   const httpsRequest = require('../lib/Adapters/Auth/httpsRequest');

src/Adapters/Auth/gcenter.js

@@ -107,7 +107,10 @@ function verifySignature(publicKey, authData) {
 // Returns a promise that fulfills if this user id is valid.
 async function validateAuthData(authData) {
   if (!authData.id) {
-    return Promise.reject('Apple Game Center - authData id missing');
+    throw new Parse.Error(
+      Parse.Error.OBJECT_NOT_FOUND,
+      'Apple Game Center - authData id missing'
+    );
   }
   authData.playerId = authData.id;
   const publicKey = await getAppleCertificate(authData.publicKeyUrl);

src/Adapters/Auth/gpgames.js

@@ -0,0 +1,33 @@
+/* Google Play Game Services
+https://developers.google.com/games/services/web/api/players/get
+
+const authData = {
+  id: 'playerId',
+  access_token: 'token',
+};
+*/
+const { Parse } = require('parse/node');
+const httpsRequest = require('./httpsRequest');
+
+// Returns a promise that fulfills if this user id is valid.
+async function validateAuthData(authData) {
+  const response = await httpsRequest.get(
+    `https://www.googleapis.com/games/v1/players/${authData.id}?access_token=${authData.access_token}`
+  );
+  if (!(response && response.playerId === authData.id)) {
+    throw new Parse.Error(
+      Parse.Error.OBJECT_NOT_FOUND,
+      'Google Play Games Services - authData is invalid for this user.'
+    );
+  }
+}
+
+// Returns a promise that fulfills if this app id is valid.
+function validateAppId() {
+  return Promise.resolve();
+}
+
+module.exports = {
+  validateAppId,
+  validateAuthData,
+};

src/Adapters/Auth/index.js

@@ -2,6 +2,7 @@ import loadAdapter from '../AdapterLoader';
 
 const apple = require('./apple');
 const gcenter = require('./gcenter');
+const gpgames = require('./gpgames');
 const facebook = require('./facebook');
 const facebookaccountkit = require('./facebookaccountkit');
 const instagram = require('./instagram');
@@ -35,6 +36,7 @@ const anonymous = {
 const providers = {
   apple,
   gcenter,
+  gpgames,
   facebook,
   facebookaccountkit,
   instagram,