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using Microsoft.Practices.ServiceLocation;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Tango.Core.Helpers;
using Tango.MachineStudio.Common.StudioApplication;
using Tango.MachineStudio.Common.Navigation;
using GalaSoft.MvvmLight.Ioc;
using System.Reflection;
using System.Collections;

namespace Tango.MachineStudio.UI.StudioApplication
{
    public class DefaultStudioApplicationManager : IStudioApplicationManager
    {
        private INavigationManager _navigationManager;

        public DefaultStudioApplicationManager(INavigationManager navigationManager)
        {
            _navigationManager = navigationManager;
        }

        public bool IsShuttingDown { get; private set; }

        public async void ShutDown()
        {
            if (IsShuttingDown) return;

            IsShuttingDown = true;

            await Task.Factory.StartNew(async () =>
            {

                //Do Shutdown Procedures...
                foreach (var vm in ServiceLocator.Current.GetAllInstancesByBase<IShutdownRequestBlocker>())
                {
                    var result = await vm.OnShutdownRequest();
                    if (!result)
                    {
                        IsShuttingDown = false;
                        return;
                    }
                }

                _navigationManager.NavigateTo(NavigationView.ShutdownView);
                Thread.Sleep(3000);
                Environment.Exit(0);

            });
        }
    }
}