using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Tango.Core.DI;
using Tango.FSE.Common.Notifications;

namespace Tango.FSE.UI.Controls
{
    /// <summary>
    /// Interaction logic for NotificationsControl.xaml
    /// </summary>
    public partial class NotificationsControl : UserControl
    {
        private UIElement _previousFocusedElement;

        [TangoInject]
        private INotificationProvider _notificationProvider;

        public NotificationsControl()
        {
            InitializeComponent();
            Loaded += NotificationsControl_Loaded;
        }

        private void NotificationsControl_Loaded(object sender, RoutedEventArgs e)
        {
            TangoIOC.Default.Inject(this);
        }

        private async void GridMessageBox_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            if (gridMessageBox.IsVisible)
            {
                _previousFocusedElement = Keyboard.FocusedElement as UIElement;
                await Task.Delay(100);
                btnOK.Focus();
            }
            else
            {
                _previousFocusedElement?.Focus();
            }
        }

        private async void GridDialog_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            if (btnDialogOK.IsDefault)
            {
                if (gridDialog.IsVisible)
                {
                    _previousFocusedElement = Keyboard.FocusedElement as UIElement;
                    await Task.Delay(100);
                    btnDialogOK.Focus();
                }
                else
                {
                    _previousFocusedElement?.Focus();
                }
            }
        }

        private async void GridInputBox_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            if (gridInputBox.IsVisible)
            {
                _previousFocusedElement = Keyboard.FocusedElement as UIElement;
                await Task.Delay(100);
                txtInput.Focus();
                Keyboard.Focus(txtInput);
                txtInput.SelectAll();
                btnInputOK.IsDefault = true;
            }
            else
            {
                _previousFocusedElement?.Focus();
            }
        }

        private void TxtInput_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Enter)
            {
                if (btnInputOK.Command != null)
                {
                    if (btnInputOK.Command.CanExecute(null))
                    {
                        btnInputOK.Command.Execute(null);
                    }
                }

                e.Handled = true;
            }
            else if (e.Key == Key.Escape)
            {
                if (btnInputCancel.Command != null)
                {
                    if (btnInputCancel.Command.CanExecute(null))
                    {
                        btnInputCancel.Command.Execute(null);
                    }
                }

                e.Handled = true;
            }
        }

        private void SnackbarItems_ScrollViewer_MouseEnter(object sender, MouseEventArgs e)
        {
            _notificationProvider.HoldSnackbarItemsTimeout = true;
        }

        private void SnackbarItems_ScrollViewer_MouseLeave(object sender, MouseEventArgs e)
        {
            _notificationProvider.HoldSnackbarItemsTimeout = false;
        }
    }
}