Tips for preserving user information after logging in with firebase authentication

Currently, I have implemented Firebase Authentication in my Angular application to enable users to log in.

Here is the login() function within my AuthService:

login(email: string, password: string) {
   return from(firebase.auth().signInWithEmailAndPassword(email, password));
}

While the login functionality is functioning as expected, I am now exploring ways to persist user data upon login to prevent inadvertent logout upon refreshing the application.

Could someone please guide me on how I can utilize the returned object from the method above to maintain a user's login session unless manually logging out of the application?

angulartypescriptfirebaseionic-frameworkfirebase-authentication

Answer №1

Using the method 

firebase.auth().signInWithEmailAndPassword(email, password)
will keep the user logged in. To determine if the user is null or not, you can utilize the following code:

firebase.auth().onAuthStateChanged(function(user) {
  if (user) {
    // User is signed in.
  } else {
    // No user is signed in.
  }
});

https://firebase.google.com/docs/auth/web/manage-users

If the user is signed in, simply redirect them to the appropriate pages post-login.

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