If you want to add additional data, you need to create a model class for your user and then store it in your Firebase database . In general, after sign up, you can create a node tree for user like picture. Then, you can get the info with user key that can get by calling FirebaseUser.
Read moreHow do I set Firebase authentication?
Get Started with Firebase Authentication on Websites
Read moreWhat is custom authentication in Firebase?
You can integrate Firebase Authentication with a custom authentication system by modifying your authentication server to produce custom signed tokens when a user successfully signs in . Your app receives this token and uses it to authenticate with Firebase.
Read moreDoes firestore need backend?
The first thing that we need to know about a Firestore, is that most of the backend logic needs to be implemented on Front-end . For example, in our app, we need to send a message to another user or a group of users. In addition to this, it is necessary to change unread messages count and send a push notification.
Read moreHow do you make a Firebase backend?
store files in the Firebase Storage. create and host a web app with Firebase Hosting.
Read moreHow does Firebase authentication work?
How Authentication Works?
Read moreWhat authentication does Firebase use?
Firebase Authentication provides backend services, easy-to-use SDKs, and ready-made UI libraries to authenticate users to your app. It supports authentication using passwords, phone numbers, popular federated identity providers like Google, Facebook and Twitter, and more .
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