Firebase, Google Login, and Unity
I am adding Google login to my Unity project (note, not the Google play sdk, just the login). I have almost everything set up and used Firebase to generate my json file for my app. I'm able to get logged in to Google and I pass the server token to Playfab using loginWithGoogle, but I get the mismatch redirect_uri error.
So I read over this https://api.playfab.com/docs/tutorials/landing-players/sign-in-with-google, but since I'm going through the Google sign in on Firebase, the interface is a little different.
I tried adding the oauth.playfab.com to the authorized domain section, but I am still getting the same error. Anybody have experience with using Firebase and setting up Google sign in through that and know what step I'm missing?
I'm not actually going through Firebase authentication, I just setup the Google Login through it and got all the stuff setup there.
Best Answer
Unfortunately, we do not support Firebase yet, so the method which you have used will not work.
For your reference, we recommend reviewing our 2 part video tutorials which available on Youtube:
Ah, ok. Well, maybe Playfab will support Firebase sometime in the near future. I was trying to avoid using Google Play Games, and the straight up Google Log in was nice since it didn't add the other stuff.
Thanks for the help.
Edit: Ok, actually got this to work with Firebase. I had to add the oauth to the Google sign in credentials. I then tried to log in and it created my account and shows it's linked to Google. So it appears to be working, unless there is something I missed somewhere. If for some reason this is incorrect on Playfabs side, please let me know, but otherwise, it seems right?
Thanks for the update, the problem before was that the auth ticket Firebase provided did not grant the right ticket. Google may have fixed this issue recently.
Would you mind sending us your code sample so that we can validate that it is working and incorporate it into our docs?
Sure thing! That way I know I didn’t do anything odd when setting this up.
I’m using this sdk in Unity 2017.2. https://github.com/googlesamples/google-signin-unity
I then went to Firebase and created a new project. Under authentication -> sign in, you can add Google as an option. Where you enable it, there is a section for Web SDK configuration. This is where I got the web client ID and the Web client secret.
Also on this screen is a section that says Whitelist client IDs from external projects. There is a question mark next to it that includes a link to the Google API Console. Going there I get taken to the credentials.
Under there is a section for OAuth 2.0 client IDs. The web one should be listed there (and Android one if you set that up). There is a pencil to edit this.
This part I hope is correct. There is an Authorized redirect URIs in that section. I added https://oauth.playfab.com/oauth2/google to there.
Also need to get the sha1 key, which this explains how https://developers.google.com/android/guides/client-auth
This is used for the Android setup and will require your keystore from the Android build.
Once all that was setup, I was able to get the google-services.json file on Firebase. This included everything I needed and I added it to my Unity project.
The login code I used below.
private GoogleSignInConfiguration gConfig;
private void Awake()
{
//googleWebId is the web client ID from above
gConfig = new GoogleSignInConfiguration
{
WebClientId = googleWebId,
RequestIdToken = true
};
}
public void LoginWithGoogle()
{
GoogleSignIn.Configuration = gConfig;
GoogleSignIn.Configuration.UseGameSignIn = false;
GoogleSignIn.Configuration.RequestIdToken = true;
GoogleSignIn.Configuration.RequestAuthCode = true;
Debug.Log("Google Sign In");
GoogleSignIn.DefaultInstance.SignIn().ContinueWith(GoogleSignInComplete);
}
internal void GoogleSignInComplete(Task<GoogleSignInUser> task)
{
if (task.IsFaulted)
{
using (IEnumerator<System.Exception> enumerator =
task.Exception.InnerExceptions.GetEnumerator())
{
if (enumerator.MoveNext())
{
GoogleSignIn.SignInException error = (GoogleSignIn.SignInException)enumerator.Current;
Debug.Log("Got Error: " + error.Status + " " + error.Message);
}
else
{
Debug.Log("Got Unexpected Exception?!?" + task.Exception);
}
}
}
else if (task.IsCanceled)
{
Debug.Log("Canceled");
}
else
{
Debug.Log("IDTOKEN " + task.Result.IdToken);
Debug.Log("AUTHCODE " + task.Result.AuthCode);
Debug.Log("Welcome: " + task.Result.DisplayName + "!");
PlayFabClientAPI.LoginWithGoogleAccount(new LoginWithGoogleAccountRequest
{
ServerAuthCode = task.Result.AuthCode,
CreateAccount = true,
TitleId = playFabGameID
}, (result) =>
{
print("PlayfabResults " + result.PlayFabId);
}, (error) =>
{
print("ERROR " + error.ErrorMessage + " :::: " + error.ErrorDetails);
});
}
}
