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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.Integration.Operation;
using Tango.PPC.Common.Connection;
using Tango.PPC.Common.Notifications;
using Tango.PPC.Common.Threading;
using Tango.PPC.Common.ThreadLoading;
using Tango.PPC.UI.Dialogs;

namespace Tango.PPC.UI.ThreadLoading
{
    public class DefaultThreadLoadingService : IThreadLoadingService
    {
        private INotificationProvider _notificationsProvider;
        private IMachineProvider _machineProvider;
        private IDispatcherProvider _dispatcher;
        private bool _dialogShown;

        public DefaultThreadLoadingService(INotificationProvider notificationsProvider, IMachineProvider machineProvider, IDispatcherProvider dispatcher)
        {
            _notificationsProvider = notificationsProvider;
            _machineProvider = machineProvider;
            _dispatcher = dispatcher;
            _machineProvider.MachineOperator.ThreadLoadingStatusChanged += MachineOperator_ThreadLoadingStatusChanged;
        }

        private void MachineOperator_ThreadLoadingStatusChanged(object sender, PMR.ThreadLoading.StartThreadLoadingResponse e)
        {
            if (!_dialogShown && e.State != PMR.ThreadLoading.ThreadLoadingState.None)
            {
                _dialogShown = true;
                _dispatcher.Invoke(async () =>
                {
                    await _notificationsProvider.ShowDialog<ThreadLoadingViewVM>(new ThreadLoadingViewVM());
                    _dialogShown = false;
                });
            }
        }

        public async void StartThreadLoading()
        {
            _dialogShown = true;
            await _notificationsProvider.ShowDialog<ThreadLoadingViewVM>(new ThreadLoadingViewVM(true));
            _dialogShown = false;
        }
    }
}