DmitrySikorsky

Future main() async {
  ...

  String? token;

  if (kIsWeb) {
    token = Uri.base.queryParameters['token'];
  }

  runApp(MyApp(token: token));

DmitrySikorsky

Future main() async {
  ...

  String? token;

  if (kIsWeb) {
    token = Uri.base.queryParameters['token'];
  }

  runApp(MyApp(token: token));

DmitrySikorsky

public async Task<ActionResult> IndexAsync(string id_token, string state)
{
  if (string.IsNullOrEmpty(id_token) || string.IsNullOrEmpty(state) || !state.Contains(';'))
    return this.BadRequest();

  string platform = state.Split(';')[0];

  if (!Guid.TryParse(state.Split(';')[1], out Guid emailValidationTokenId))
    return this.BadRequest();

DmitrySikorsky

public class HomeController : Controller
{
  [HttpGet]
  public ActionResult Index(string platform, string provider, string token)
  {
    string url;

    if (provider == "apple")
      url = "https://appleid.apple.com/auth/authorize" +
        "?client_id=com.your.app" +

DmitrySikorsky

Future validateEmailWithOAuth2AndLogin(LoginMethod loginMethod) async {
  // Creates an empty email validation token on server-side so we have its ID
  EmailValidationToken emailValidationToken = await beginOAuth2EmailValidation(loginMethod);

  String url = 'https://auth.youapp.com/?${kIsWeb ? 'platform=web&' : ''}provider=${loginMethod.name}&token=${emailValidationToken.id}';

  if (await canLaunchUrlString(url)) {
    // Open the URL in a new browser window on all the platforms except web
    await launchUrlString(
      url,

DmitrySikorsky

private async Task<string> GetEmailFromGoogleCode(string googleCode)
{
  GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow(
    new GoogleAuthorizationCodeFlow.Initializer
    {
      ClientSecrets = new ClientSecrets()
      {
        ClientId = "XXXXXXXXXX.apps.googleusercontent.com",
        ClientSecret = "XXXXXXXXXX"
      },

DmitrySikorsky

private async Task<string> GetEmailFromAppleCode(string appleCode)
{
  string privateKey = System.IO.File.ReadAllText(Path.Combine(this.environment.ContentRootPath, "AuthKey_XXXXXXXXXX.p8"));
  AppleAuthProvider provider = new AppleAuthProvider(
    "com.your.app",
    "XXXXXXXXXX",
    "XXXXXXXXXX",
    "https://auth.yourapp.com/callback", // I don't know why it must be here but it is not used
    string.Empty
  );

DmitrySikorsky

if (!kIsWeb && Platform.isAndroid) {
  GoogleSignIn googleSignIn = GoogleSignIn(
    scopes: <String>['email'],
  );

  try {
    GoogleSignInAccount account = (await googleSignIn.signIn())!;

    // Send the account.serverAuthCode to your server to exchange it for the token
    await validateEmailWithGoogleAndLogin(account.serverAuthCode!);

DmitrySikorsky

if (!kIsWeb && (Platform.isIOS || Platform.isMacOS)) {
  AuthorizationCredentialAppleID credential = await SignInWithApple.getAppleIDCredential(
    scopes: [AppleIDAuthorizationScopes.email],
  );

  // Send the credential.authorizationCode to your server to exchange it for the token
  await validateEmailWithAppleAndLogin(credential.authorizationCode);
}

DmitrySikorsky

public override void OnActionExecuting(ActionExecutingContext actionExecutingContext)
{
  base.OnActionExecuting(actionExecutingContext);
  this.HandleViewModelMultilingualProperties(actionExecutingContext);
}

private void HandleViewModelMultilingualProperties(ActionExecutingContext actionExecutingContext)
{
  ViewModelBase viewModel = this.GetViewModelFromActionExecutingContext(actionExecutingContext);