void Hyperlink_Click()

in Clients/Xamarin.Interactive.Client.Windows/Views/UpdaterWindow.xaml.cs [90:186]

• 79 lines of code
• 8 McCabe index (conditional complexity)

        void Hyperlink_Click (object sender, RoutedEventArgs e)
            => Commands.Commands.ShowOptions.Execute (OptionsWindow.Tab.Updater);

        sealed class WpfUpdaterViewModel : UpdaterViewModel
        {
            const string TAG = nameof (WpfUpdaterViewModel);

            readonly Window ownerWindow;

            public WpfUpdaterViewModel (Window ownerWindow, UpdateItem updateItem)
                : base (ClientInfo.FullProductName, updateItem)
            {
                if (ownerWindow == null)
                    throw new ArgumentNullException (nameof (ownerWindow));

                this.ownerWindow = ownerWindow;
            }

            MetroDialogWindow CreateDialog (string title, string message)
                => new MetroDialogWindow {
                    Owner = ownerWindow,
                    WindowStartupLocation = WindowStartupLocation.CenterOwner,
                    Width = ownerWindow.Width,
                    Title = title,
                    Message = message
                };

            void DeleteUpdate ()
            {
                try {
                    File.Delete (DownloadItem.TargetFile);
                } catch (Exception ex) {
                    Log.Error (TAG, $"unable to delete file {DownloadItem.TargetFile}", ex);
                }
            }

            protected override Task InstallUpdateAsync ()
            {
                MainThread.Ensure ();

                var window = CreateDialog (
                    Catalog.Format (Catalog.GetString (
                        "{0} must be closed before continuing.",
                        comment: "{0} is the application name"),
                        AppName),
                    Catalog.Format (Catalog.GetString (
                        "The update was downloaded successfully and is ready " +
                        "to be installed, but {0} must be closed first.",
                        comment: "{0} is the application name"),
                        AppName));

                window.ButtonStyle = MessageDialogStyle.AffirmativeAndNegative;
                window.AffirmativeButtonText = Catalog.GetString ("Quit & Install Update");
                window.NegativeButtonText = Catalog.GetString ("Cancel Update");

                window.ShowDialog ();

                if (window.Result != MessageDialogResult.Affirmative) {
                    DeleteUpdate ();
                    ownerWindow.Close ();
                    return Task.CompletedTask;
                }

                Process.Start (DownloadItem.TargetFile).WaitForInputIdle (2000);
                App.Current.Shutdown ();

                return Task.CompletedTask;
            }

            protected override void RunErrorDialog (bool isDownloadError, string message)
            {
                MainThread.Ensure ();

                MetroDialogWindow dialog;

                if (isDownloadError) {
                    dialog = CreateDialog (Catalog.GetString ("Download Failed"), message);
                    dialog.ButtonStyle = MessageDialogStyle.AffirmativeAndNegative;
                    dialog.AffirmativeButtonText = Catalog.GetString ("Download & Install Manually");
                    dialog.NegativeButtonText = Catalog.GetString ("Cancel");
                } else {
                    dialog = CreateDialog (Catalog.GetString ("Installation Failed"), message);
                    dialog.ButtonStyle = MessageDialogStyle.Affirmative;
                    dialog.AffirmativeButtonText = Catalog.GetString ("Close");
                }

                dialog.ShowDialog ();

                if (dialog.Result == MessageDialogResult.Affirmative && isDownloadError) {
                    try {
                        Process.Start (UpdateItem.DownloadUrl.ToString ());
                    } catch (Exception e) {
                        Log.Error (TAG, $"unable to Process.Start({UpdateItem.DownloadUrl})", e);
                    }
                }
            }
        }