using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Threading;
using Tango.Core.DI;
using Tango.Integration.ExternalBridge;
using Tango.Integration.Operation;
using Tango.PPC.Common;
using Tango.PPC.Common.Application;
using Tango.PPC.Common.Authentication;
using Tango.PPC.Common.ExternalBridge;
using Tango.PPC.Common.Modules;
using Tango.PPC.Common.Navigation;
using Tango.PPC.Common.Notifications;
using Tango.PPC.Common.WatchDog;
using Tango.PPC.UI.Dialogs;
using Tango.SharedUI;

namespace Tango.PPC.UI.ViewModels
{
    /// <summary>
    /// Represents the PPC main view model.
    /// </summary>
    /// <seealso cref="Tango.PPC.Common.PPCViewModel" />
    public class MainViewVM : PPCViewModel
    {
        private DispatcherTimer _date_timer;

        private DateTime _currentDateTime;
        /// <summary>
        /// Gets or sets the current date time.
        /// </summary>
        public DateTime CurrentDateTime
        {
            get { return _currentDateTime; }
            set { _currentDateTime = value; RaisePropertyChangedAuto(); }
        }

        public MainViewVM()
        {
            _date_timer = new DispatcherTimer();
            _date_timer.Interval = TimeSpan.FromSeconds(1);
            _date_timer.Tick += _date_timer_Tick;
            _date_timer.Start();
        }

        /// <summary>
        /// Called when the application has been started.
        /// </summary>
        public override void OnApplicationStarted()
        {

        }

        public override void OnApplicationReady()
        {
            base.OnApplicationReady();
            MachineProvider.MachineOperator.CartridgeValidationRequestReceived += MachineOperator_CartridgeValidationRequestReceived;
        }

        #region Event Handlers

        /// <summary>
        /// Handles the Tick event of the _date_timer.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void _date_timer_Tick(object sender, EventArgs e)
        {
            CurrentDateTime = DateTime.Now;
        }

        private void MachineOperator_CartridgeValidationRequestReceived(object sender, CartridgeValidationEventArgs e)
        {
            InvokeUI(async () =>
            {
                var vm = await NotificationProvider.ShowDialog<CartridgeValidationViewVM>(new CartridgeValidationViewVM()
                {
                    IDSPacks = MachineProvider.Machine.Configuration.NoneEmptyIdsPacks.ToList(),
                });

                if (vm.DialogResult)
                {
                    e.Approve(vm.SelectedIDSPack.PackIndex);
                }
                else
                {
                    e.Decline();
                }
            });
        }

        #endregion
    }
}