public ConnectionViewModel(UserSettings userSettings, Func <string> ipAddress, IInstallationDateFetcher installationDateFetcher = null, IClock clock = null)
{
if (ipAddress == null)
{
throw new ArgumentNullException("ipAddress");
}
if (userSettings == null)
{
throw new ArgumentNullException("userSettings");
}
this.userSettings = userSettings;
this.installationDateFetcher = installationDateFetcher;
this.clock = clock;
this.Activator = new ViewModelActivator();
this.WhenActivated(() =>
{
var disposable = new CompositeDisposable();
this.isConnected = NetworkMessenger.Instance.WhenAnyValue(x => x.IsConnected)
.ObserveOn(RxApp.MainThreadScheduler)
.ToProperty(this, x => x.IsConnected)
.DisposeWith(disposable);
var canConnect = this.WhenAnyValue(x => x.IsConnected, x => !x);
this.ConnectCommand = ReactiveCommand.CreateAsyncObservable(canConnect, _ => ConnectAsync(ipAddress(), this.userSettings.Port)
.Timeout(ConnectCommandTimeout, RxApp.TaskpoolScheduler)
.Catch <ConnectionResultContainer, TimeoutException>(ex => Observable.Return(new ConnectionResultContainer(ConnectionResult.Timeout)))
.Catch <ConnectionResultContainer, NetworkException>(ex => Observable.Return(new ConnectionResultContainer(ConnectionResult.Failed)))
.Catch <ConnectionResultContainer, NetworkRequestException>(ex => Observable.Return(new ConnectionResultContainer(ConnectionResult.Failed)))
.TakeUntil(disposable));
this.DisconnectCommand = ReactiveCommand.Create(this.WhenAnyValue(x => x.IsConnected));
this.DisconnectCommand.Subscribe(x => NetworkMessenger.Instance.Disconnect());
// We don't simply use InvokeCommand here, it results in a weird infinite loop where
// DisconnectCommand is executed infinitely
this.ConnectCommand.Where(x => x.ConnectionResult != ConnectionResult.Successful)
.SelectMany(x => this.DisconnectCommand.CanExecute(null) ? this.DisconnectCommand.ExecuteAsync() : Observable.Return((object)null))
.Subscribe()
.DisposeWith(disposable);
return(disposable);
});
}
public static bool IsInTrialPeriod(TimeSpan trialTime, IClock clock = null, IInstallationDateFetcher installationDateFetcher = null)
{
return(GetRemainingTrialTime(trialTime, clock, installationDateFetcher) > TimeSpan.Zero);
}
public static TimeSpan GetRemainingTrialTime(TimeSpan trialTime, IClock clock = null, IInstallationDateFetcher installationDateFetcher = null)
{
clock = clock ?? new Clock();
installationDateFetcher = installationDateFetcher ?? Locator.Current.GetService <IInstallationDateFetcher>();
return(installationDateFetcher.GetInstallationDate() + trialTime - clock.Now);
}
