using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.FSE.Common;
using Tango.FSE.Common.Navigation;
using Tango.FSE.MachineConfiguration.Navigation;
using Tango.SharedUI.Helpers;

namespace Tango.FSE.MachineConfiguration.ViewModels
{
    [ModularNavigationContainer]
    public class MainViewVM : ConfigurationViewModel
    {
        public override void OnApplicationReady()
        {
            if (CurrentUser.HasPermission(Tango.BL.Enumerations.Permissions.FSE_RunConfigurationModule))
            {
                InvokeUI(() =>
                {
                    NavigationManager.MenuItems.Add(new NavigationMenuItem(() =>
                    {
                        NavigationManager.NavigateTo<ConfigurationModule>();
                    })
                    {
                        Name = "Configuration",
                        Index = 8,
                        Description = "Access to the organization machines configuration and settings",
                        Image = ResourceHelper.GetImageFromResources("Images/configuration.png"),
                    });
                });
            }
        }

        public async override Task<bool> OnApplicationLogout()
        {
            while (ModularNavigationManager.CurrentView != ConfigurationView.SelectionView)
            {
                if (!await ModularNavigationManager.NavigateBack())
                {
                    return false;
                }
            }

            return await base.OnApplicationLogout();
        }

        public async override Task<bool> OnNavigateBackRequest()
        {
            if (ModularNavigationManager.CurrentView == ConfigurationView.SelectionView)
            {
                return await base.OnNavigateBackRequest();
            }
            else
            {
                await ModularNavigationManager.NavigateBack();
                return false;
            }
        }
    }
}