public ChatViewModel(INavigationService navigationService,
IRepository <Message> messageRepository,
ChatbotViewModel chatbotViewModel,
ICommandFactory commandFactory,
IDialogService dialogService,
IQueryFactory queryFactory,
ChatBoxViewModel message)
: base(navigationService)
{
Guard.Against.Null(navigationService, nameof(navigationService));
Guard.Against.Null(messageRepository, nameof(messageRepository));
Guard.Against.Null(chatbotViewModel, nameof(chatbotViewModel));
Guard.Against.Null(commandFactory, nameof(commandFactory));
Guard.Against.Null(dialogService, nameof(dialogService));
Guard.Against.Null(queryFactory, nameof(queryFactory));
Guard.Against.Null(message, nameof(message));
ChatbotViewModel = chatbotViewModel;
_dialogService = dialogService;
Messages = messageRepository;
ChatBoxViewModel = message;
Title = "Chat Page";
SendMessage = commandFactory
.MakeDelegateWithParameter <SendMessageCommand, IChatBoxModel>();
GotoOptions = new DelegateCommand(GotoOptionsCommand);
_getMessagesQuery = queryFactory.MakeQuery <GetMessagesQuery>();
}