using Microsoft.Extensions.DependencyInjection;
using MSFSPopoutPanelManager.DomainModel.Profile;
using MSFSPopoutPanelManager.MainApp.ViewModel;
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Input;

namespace MSFSPopoutPanelManager.MainApp
{
    public partial class PanelConfigField : UserControl
    {
        private PanelConfigFieldViewModel _viewModel;

        public static readonly DependencyProperty DataItemProperty = DependencyProperty.Register("DataItem", typeof(PanelConfig), typeof(PanelConfigField));
        public static readonly DependencyProperty BindingPathProperty = DependencyProperty.Register("BindingPath", typeof(string), typeof(PanelConfigField));
        public static readonly RoutedEvent SourceUpdatedEvent = EventManager.RegisterRoutedEvent("SourceUpdatedEvent", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(PanelConfigField));

        public PanelConfigField()
        {
            _viewModel = App.AppHost.Services.GetRequiredService<PanelConfigFieldViewModel>();
            Loaded += (sender, e) =>
            {
                _viewModel.DataItem = DataItem;
                _viewModel.BindingPath = BindingPath;
                _viewModel.SourceUpdatedEvent = SourceUpdatedEvent;
                this.DataContext = _viewModel;
                InitializeComponent();

                Binding binding = new Binding($"DataItem.{BindingPath}");
                binding.Mode = BindingMode.TwoWay;
                binding.NotifyOnSourceUpdated = true;
                TxtBoxData.SetBinding(TextBox.TextProperty, binding);
            };
        }

        public PanelConfig DataItem
        {
            get { return (PanelConfig)GetValue(DataItemProperty); }
            set { SetValue(DataItemProperty, value); }
        }

        public string BindingPath
        {
            get { return (string)GetValue(BindingPathProperty); }
            set { SetValue(BindingPathProperty, value); }
        }

        private void TextBox_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Enter)
            {
                Keyboard.ClearFocus();
                FocusManager.SetFocusedElement(FocusManager.GetFocusScope(this.Parent), this.Parent as IInputElement);
            }
        }

        private void TextBox_GotFocus(object sender, RoutedEventArgs e)
        {
            TxtBoxData.Dispatcher.BeginInvoke(new Action(() => TxtBoxData.SelectAll()));
        }

        private string _oldText;

        private void TxtBox_NumbersOnly(object sender, TextCompositionEventArgs e)
        {
            int result;
            e.Handled = !(int.TryParse(e.Text, out result) || (e.Text.Trim() == "-"));

            if (!e.Handled)
                _oldText = ((TextBox)sender).Text;
        }

        private void TxtBox_NumbersOnlyTextChanged(object sender, TextChangedEventArgs e)
        {
            int result;
            var txtBox = (TextBox)sender;

            if (String.IsNullOrEmpty(txtBox.Text))
                txtBox.Text = "0";
            else if (!(int.TryParse(txtBox.Text, out result) || (txtBox.Text.Trim() == "-")))
            {
                txtBox.Text = _oldText;
            }
        }

        private void Data_SourceUpdated(object sender, DataTransferEventArgs e)
        {
            _viewModel.DataUpdatedCommand.Execute(null);
        }

        private void BtnPopupBoxOpen_Click(object sender, RoutedEventArgs e)
        {
            PopupBoxAdjustment.IsPopupOpen = true;
        }

        private void BtnPopupBoxClose_Click(object sender, RoutedEventArgs e)
        {
            PopupBoxAdjustment.IsPopupOpen = false;
        }
    }
}