Google email offline access using react native expo app - react-native

Question

I am creating one app using react native expo, which allow end user to login by their google account , and then applicaton try to save the access_token so that server based applicatin can use this to send the email on their behalf ,
But when using google sing in , i am not getting refresh token and not able to send the email ,
Here is code example which i am using
I tried below method to get the access request
const [request, response, promptAsync] = Google.useIdTokenAuthRequest({
clientId: "XXXXXXX",
androidClientId:"XXXXXXX",
iosClientId:"XXXXXXX"
});
const [initializing, setInitializing] = useState(true);
const [user, setUser] = useState();
const sendNotification=useNotification()
//console.log(sendNotification)
useEffect(() => {
if (response?.type === "success") {
const { id_token } = response.params;
const auth = getAuth();
const credential = GoogleAuthProvider.credential(id_token);
signInWithCredential(auth, credential);
let decoded = jwt_decode(id_token);
socialLogin(decoded)
}
}, [response]);
And on server using this code to sending email
const { google } = require('googleapis');
const path = require('path');
const fs = require('fs');
const credentials = require('./credentials.json');
// Replace with the code you received from Google
const code = 'XXXXXXX';
//const code="XXXXXXX"
const { client_secret, client_id, redirect_uris } = credentials.installed;
const oAuth2Client = new google.auth.OAuth2(client_id, client_secret, redirect_uris[0]);
oAuth2Client.getToken(code).then(({ tokens }) => {
console.log('first')
const tokenPath = path.join(__dirname, 'token.json');
fs.writeFileSync(tokenPath, JSON.stringify(tokens));
console.log('Access token and refresh token stored to token.json');
}).catch(err=>console.log(err));

Answer 1

async function signInWithGoogleAsync() {
try {
const result = await Google.logInAsync({
androidClientId: YOUR_CLIENT_ID_HERE,
scopes: ["profile", "email"],
});
if (result.type === "success") {
onSignIn(result);
return result.accessToken;
} else {
return { cancelled: true };
}
} catch (e) {
return { error: true };
}
}

Answer 2

Well, I tried to create an application with Google login. To use the Google Sign-In method in a React Native Expo app, you will need to perform the following steps:
Set up a project in the Google Cloud Console and obtain a configuration file for your app.
Install the expo-google-sign-in package in your React Native app.
Import the GoogleSignIn object from the expo-google-sign-in package and use the initAsync method to initialize the Google Sign-In process.
Use the GoogleSignIn.askForPlayServicesAsync method to check if the device has the required Google Play Services installed.
Use the GoogleSignIn.signInAsync method to prompt the user to sign in with their Google account.
Once the user has signed in, you can use the accessToken and refreshToken properties of the returned object to make authorized requests to the Google APIs.
The code lines for the above steps are:
import { GoogleSignIn } from 'expo-google-sign-in';
// Initialize the Google Sign-In process
await GoogleSignIn.initAsync({
// Your config. values
});
// Check if the device has the required Google Play Services installed
const isPlayServicesAvailable = await GoogleSignIn.askForPlayServicesAsync();
if (!isPlayServicesAvailable) {
console.error('Google Play services are not available on this device.');
return;
}
// Prompt the user to sign in with their Google account
const { accessToken, refreshToken } = await GoogleSignIn.signInAsync();