public ShellViewModel(
SettingsViewModel settingsViewModel,
MainViewModel mainViewModel,
IEventAggregator eventAggregator,
INavigationService navigationService,
IMonitorStreamsModel monitorStreamsModel,
ISettingsHandler settingsHandler,
PopularLivestreamWatcher popularLivestreamWatcher)
{
Settings = settingsViewModel ?? throw new ArgumentNullException(nameof(settingsViewModel));
this.mainViewModel = mainViewModel ?? throw new ArgumentNullException(nameof(mainViewModel));
this.navigationService = navigationService ?? throw new ArgumentNullException(nameof(navigationService));
this.monitorStreamsModel = monitorStreamsModel ?? throw new ArgumentNullException(nameof(monitorStreamsModel));
this.settingsHandler = settingsHandler ?? throw new ArgumentNullException(nameof(settingsHandler));
this.popularLivestreamWatcher = popularLivestreamWatcher ?? throw new ArgumentNullException(nameof(popularLivestreamWatcher));
ActiveItem = mainViewModel;
eventAggregator.Subscribe(this);
Settings.ActivateWith(this);
currentAppVersion = GetType().Assembly.GetName().Version;
DisplayName = $"LIVESTREAM MONITOR V{currentAppVersion.Major}.{currentAppVersion.Minor}.{currentAppVersion.Build}";
#if DEBUG
// helps to know that we're running the debug rather than release version of the exe
DisplayName += " (DEBUG)";
#endif
}