/// <summary>
/// Asynchronously executes the specified request, with the specified authenticator, for the specified ViewModel type.
/// </summary>
public async Task ExecuteAsync <TViewModel, TToken, TSession>(ITwoStepAuthenticator <TToken, TSession> authenticator, Func <TSession, Task> attempt)
where TViewModel : ViewModel <NoParameter>
where TToken : IAuthenticationToken
where TSession : class
{
var session = LoadSession <TSession>(typeof(TViewModel));
if (session == null)
{
var token = await authenticator.GetTokenAsync();
if (await _authenticator.AuthenticateAsync(_credentials.UserName, _credentials.Password, token.AuthenticationKey))
{
session = await authenticator.GetSessionAsync(token);
SaveSession(typeof(TViewModel), session);
}
else
{
_mainSettings.SessionStatus = SessionStatus.NotLoggedIn;
return;
}
}
await attempt(session);
}
public Task ExecuteAsync <TViewModel, TToken, TSession>(ITwoStepAuthenticator <TToken, TSession> authenticator, Func <TSession, Task> attempt)
where TViewModel : ViewModel <NoParameter>
where TToken : IAuthenticationToken
where TSession : class
{
return(attempt(null));
}