Manage social user details in Google Flutter application

Question

I am a beginner in developing Flutter application, and try to create a sample application for educational purpose. Last few weeks I decided to do a sample application in flutter that have no inbuilt login or register section because it's have social login options like Facebook and Google. I searched the web and got many code examples for how to implement Facebook and Google authentication in Flutter application.

I have a doubt about this social login implementation maybe it's happening because of lack of working experience in mobile application architecture level. At this point I am asking a question to myself "How to manage social login users in applications"

I have a solution like if the user can login ed successfully, store the user details into our (Firebase) db check the user email exists in database if there is no matching entries in db it will create a new user in database or if exists update the last login date time of that particular user. Because this application shows some user related data in other forms, it's work on the basis of logined userid, so I need to store the logined user details in the database.

Answer 1

Your proposed solution is good enough. The returned id is unique for your app.

Use the id returned to your app as the identifier for users in your app.

Checkout this answer on unique id

Just leaving the social_login plugin here

// Import package
import 'package:social_login/social_login.dart';

// Instantiate it
 final socialLogin = SocialLogin();

//Before calling any methods, set the configuration
socialLogin.setConfig(SocialConfig(
      facebookAppId: FACEBOOK_APP_ID,
      googleWebClientId: GOOGLE_WEB_CLIENT_ID, /*In case a Google tokenId is needed*/
      twitterConsumer: TWITTER_CONSUMER_KEY,
      twitterSecret: TWITTER_CONSUMER_SECRET,
    ));

// Get current logged user
 final FacebookUser facebookUser = await socialLogin.getCurrentFacebookUser();
 final GoogleUser googleUser = await socialLogin.getCurrentGoogleUser();
 final TwitterUser twitterUser = await socialLogin.getCurrentTwitterUser();

//Log in social networks
 final FacebookUser facebookUser = await socialLogin.logInFacebookWithPermissions(FacebookPermissions.DEFAULT);
 final GoogleUser googleUser = await socialLogin.logInGoogle();
 final TwitterUser twitterUser = await socialLogin.logInTwitter();

//Log out from social networks
 await socialLogin.logOutFacebook();
 await socialLogin.logOutGoogle();
 await socialLogin.logOutTwitter();