using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using DTS.Common.Controls;
using DTS.Common.Interface.ISO.ExtraProperties;
using DTS.Common.Utils;

namespace ExtraProperties
{
    /// <summary>
    /// Interaction logic for ExtraPropertiesListView.xaml
    /// </summary>
    public partial class ExtraPropertiesListView : IExtraPropertiesListView
    {
        public ExtraPropertiesListView()
        {
            InitializeComponent();
        }

        private void GridViewColumnHeaderSearchable_OnSearch(object sender, RoutedEventArgs e)
        {
            var searchTerm = (string)e.OriginalSource;
            var columnTag = (sender as GridViewColumnHeaderSearchable)?.Tag;
            var viewModel = (IExtraPropertiesListViewModel)DataContext;
            viewModel.Filter(columnTag, searchTerm);
        }

        private void GridViewColumnHeader_OnClick(object sender, RoutedEventArgs e)
        {
            var vm = (IExtraPropertiesListViewModel)DataContext;
            var columnTag = (sender as GridViewColumnHeaderSearchable)?.Tag ?? Utils.FindChild<GridViewColumnHeaderSearchable>((DependencyObject)e.OriginalSource, null)?.Tag;
            vm?.Sort(columnTag, true);
        }

        private void ExtraPropertyKeyTextBox_KeyDown(object sender, KeyEventArgs e)
        {
            if (!(DataContext is ExtraPropertiesListViewModel vm)) { return; }
            if (!(((System.Windows.Controls.Control)e.Source).DataContext is IExtraProperty iep)) { return; }

            vm.MarkModified(iep);
        }

        private void ExtraPropertyKeyTextBox_TextChanged(object sender, TextChangedEventArgs e)
        {
            if (!(DataContext is ExtraPropertiesListViewModel vm)) { return; }
            if (!(e.Source is TextBox textBox)) { return; }
            if (!(textBox.DataContext is IExtraProperty iep)) { return; }

            vm.MarkModified(iep);
            var notUsed1 = new List<string>();
            var notUsed2 = new List<string>();
            vm.Validate(ref notUsed1, ref notUsed2);
        }

        private void ExtraProperties_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (!(DataContext is ExtraPropertiesListViewModel vm)) { return; }
            if (!(sender is ListView lv)) { return; }

            var list = new List<IExtraProperty>();
            foreach (var item in lv.SelectedItems)
            {
                if (!(item is IExtraProperty exp))
                {
                    continue;
                }
                list.Add(exp);
            }
            vm.SetSelection(list.ToArray());
        }

        private void ExtraPropertiesListView_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            var point = e.GetPosition(ExtraPropertiesListViewLV);

            //we have to do multiple hittests unfortunately, because borders and rectangles...
            var result = VisualTreeHelper.HitTest((UIElement)sender, point);
            if (null == result) { return; }
            if (!(result.VisualHit is UIElement element)) { return; }
            var result2 = ExtraPropertiesListViewLV.InputHitTest(point);
            if (!(result2 is UIElement element2)) { return; }

            //clicking on the bottom of the listview produces a scrollviewer, if we get that we can return
            if (element is ScrollViewer)
            {
                return;
            }

            var vm = (IExtraPropertiesListViewModel)DataContext;
            if (element is TextBlock tb)
            {
                if (tb.Text == ExtraProperties.Resources.StringResources.Key) { vm?.Sort(KeyColumnHeader.Tag, true); }
                if (tb.Text == ExtraProperties.Resources.StringResources.Value) { vm?.Sort(ValueColumnHeader.Tag, true); }
                return;
            }
            if (KeyColumnHeader.IsDescendantOf(element) || KeyColumnHeader.IsDescendantOf(element2))
            {
                vm?.Sort(KeyColumnHeader.Tag, true);
                return;
            }
            if (ValueColumnHeader.IsDescendantOf(element) || ValueColumnHeader.IsDescendantOf(element2))
            {
                vm?.Sort(ValueColumnHeader.Tag, true);
            }
        }

        private void ExtraPropertyValueTextBox_KeyDown(object sender, KeyEventArgs e)
        {
            if (!(DataContext is ExtraPropertiesListViewModel vm)) { return; }
            if (!(((System.Windows.Controls.Control)e.Source).DataContext is IExtraProperty iep)) { return; }

            vm.MarkModified(iep);
        }

        private void ExtraPropertyValueTextBox_TextChanged(object sender, TextChangedEventArgs e)
        {
            if (!(DataContext is ExtraPropertiesListViewModel vm)) { return; }
            if (!(e.Source is TextBox textBox)) { return; }
            if (!(textBox.DataContext is IExtraProperty iep)) { return; }

            vm.MarkModified(iep);
            var notUsed1 = new List<string>();
            var notUsed2 = new List<string>();
            vm.Validate(ref notUsed1, ref notUsed2);
        }
    }
}