index.js

import Meteor from '@meteorrn/core';
import { GoogleSignin } from '@react-native-google-signin/google-signin';

/**
 * Login with Google using Meteor Accounts and React Native
 * @param configuration Options for the configure method of GoogleSignin.
 * @param callback function to see if there is error
 * @returns {Promise<void> | Promise.Promise}
 */
Meteor.loginWithGoogle = async function(configuration, callback) {
	try {
		GoogleSignin.configure(configuration);
		await GoogleSignin.hasPlayServices({
			showPlayServicesUpdateDialog: true
		});
		let userInfo;
		const isSignedIn = await GoogleSignin.isSignedIn();
		if (!isSignedIn) {
			userInfo = await GoogleSignin.signIn();
			if (!userInfo) {
				callback({ reason: 'Something went wrong obtaining user info', details: { userInfo } });
				return;
			}
		} else {
			userInfo = await GoogleSignin.signInSilently();
			if (!userInfo) {
				callback({ reason: 'Something went wrong obtaining user info', details: { userInfo } });
				return;
			}
		}
		const tokens = await GoogleSignin.getTokens();
		Meteor._startLoggingIn();
		Meteor.call(
			'login',
			{
				googleSignIn: true,
				accessToken: tokens.accessToken,
				refreshToken: undefined,
				idToken: tokens.idToken,
				serverAuthCode: userInfo.serverAuthCode,
				email: userInfo.user.email,
				imageUrl: userInfo.user.photo,
				userId: userInfo.user.id
			},
			(error, response) => {
				if (error) {
					GoogleSignin.revokeAccess();
					GoogleSignin.signOut();
				}
				Meteor._endLoggingIn();
				Meteor._handleLoginCallback(error, response);
				typeof callback == 'function' && callback(error);
			}
		);
	} catch (error) {
		callback({ reason: 'Error in Google Signing', details: error });
	}
};

Meteor.logoutFromGoogle = function() {
	return Promise((resolve, reject)=>{
		Meteor.logout((error) => {
			if (!error) {
				GoogleSignin.revokeAccess();
				GoogleSignin.signOut();
				resolve();
			}else{
				reject(error);
			}
		});
	})
};