/**
* The Function when the WebView is navigated (is on)
*/
private async void WebViewOnNavigated(object sender, WebNavigatedEventArgs e)
{
/* Get the AccessToken from Facebook Server. Using the function written below
*
* private string ExtractAccessTokenFromUrl(string url)
*/
var accessToken = ExtractAccessTokenFromUrl(e.Url);
// If successfully have the AccessToken
if (accessToken != "")
{
// Then we send them to the FacebookLogInPage with its ViewModel
var vm = BindingContext as FacebookLogInPageViewModel;
// Set their Profile using the Function written in its ViewModel with the AccessToken
await vm.SetFacebookUserProfileAsync(accessToken);
// Set the userUID to the app
Content = MainStackLayout;
vm.IsBusy = true;
// Authenticate user with Firebase Authentication & send the UID to the Firebase Server
string FirebaseUserUID = await AuthenticationFirebase.AuthenticateFacebookAsync(accessToken);
// Check if User is new ??
bool isNew = await UsersFirestore.IsNewUser(FirebaseUserUID);
if (!isNew)
{
UsersFirestore.myProfile = await UsersFirestore.GetUserByUIDAsync(FirebaseUserUID);
vm.IsBusy = false;
// Welcome back Page
WelcomeView.IsVisible = true;
}
else
{
// Init a new user details based on Facebook Profile
vm.FirstUserInit(FirebaseUserUID);
vm.IsBusy = false;
// User question add page
RegisterView.IsVisible = true;
}
}
}
