Using Firebase to sign in using Google

A social login is a method of authentication where the authentication is delegated to a trustworthy social networking service outside our app. A common social networking service that offers this kind of opportunity is Google.

In this recipe, you'll learn how to integrate a social login with Google using Firebase.

Getting ready

First, create a SwiftUI app called GoogleLogin with Xcode. After creating it, configure the project following these steps:

1. Add the Firebase SPM package:

   Figure 12.21 – Adding the Firebase main package

2. Then select the FirebaseAuth sub-package:

   Figure 12.22 – Adding the FirebaseAuth sub-package

3. Add the GoogleSignIn SPM package, setting the URL to https://github.com/google/GoogleSignIn-iOS:

Figure 12.23 – Adding the GoogleSignIn SPM package

After configuring the project, create a FirebaseGoogleSignInApp in Firebase following the steps in the recipe...