/// <summary>
/// Function to handle successful Google Login
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
async void OnGoogleAuthCompleted(object sender, AuthenticatorCompletedEventArgs e)
{
var authenticator = sender as OAuth2Authenticator;
if (authenticator != null)
{
authenticator.Completed -= OnGoogleAuthCompleted;
authenticator.Error -= OnGoogleAuthError;
}
if (e.IsAuthenticated)
{
DialogsHelper.ProgressDialog.Show();
try
{
var google_provider_authCredential = Plugin.FirebaseAuth.CrossFirebaseAuth.Current.GoogleAuthProvider.GetCredential(e.Account.Properties["id_token"], e.Account.Properties["access_token"]);
var result = await Plugin.FirebaseAuth.CrossFirebaseAuth.Current.Instance.SignInWithCredentialAsync(google_provider_authCredential);
await SaveUser(result);
}
catch (Plugin.FirebaseAuth.FirebaseAuthException ex)
{
Debug.WriteLine(ex.Message);
DialogsHelper.HandleDialogMessage(DialogsHelper.Errors.UndefinedError);
}
DialogsHelper.ProgressDialog.Hide();
}
}
/// <summary>
/// Event handler to capture Google Login error
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void OnGoogleAuthError(object sender, AuthenticatorErrorEventArgs e)
{
Debug.WriteLine("Authentication error: " + e.Message);
DialogsHelper.ProgressDialog.Hide();
var authenticator = sender as OAuth2Authenticator;
if (authenticator != null)
{
authenticator.Completed -= OnGoogleAuthCompleted;
authenticator.Error -= OnGoogleAuthError;
}
DialogsHelper.HandleDialogMessage(DialogsHelper.Errors.UndefinedError);
}
void LoginWithGoogle()
{
try
{
var store = AccountStore.Create();
var account = store.FindAccountsForService(Constants.AppName).FirstOrDefault();
var authenticator = new OAuth2Authenticator(
GoogleClientId(),
string.Empty,
Constants.GoogleScope,
new Uri(Constants.GoogleAuthorizeUrl),
new Uri(GoogleRedirectUrl()),
new Uri(Constants.GoogleAccessTokenUrl),
null,
true)
{
AllowCancel = true,
Title = "Google Login"
};
authenticator.Completed += OnGoogleAuthCompleted;
authenticator.Error += OnGoogleAuthError;
AuthenticationState.Authenticator = authenticator;
var presenter = new Xamarin.Auth.Presenters.OAuthLoginPresenter();
presenter.Login(authenticator);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
DialogsHelper.HandleDialogMessage(DialogsHelper.Errors.UndefinedError);
}
}