using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using DTS.Common.Controls;
using DTS.Common.Enums.Channels;
using DTS.Common.Interface.Channels.ChannelCodes;
using DTS.Common.Utils;

// ReSharper disable CheckNamespace

namespace ChannelCodes
{
    /// <inheritdoc cref="IChannelCodesListView" />
    /// <summary>
    /// Interaction logic for ChannelCodesListView.xaml
    /// </summary>
    public partial class ChannelCodesListView : IChannelCodesListView
    {
        public ChannelCodesListView()
        {
            InitializeComponent();
        }
        private void GridViewColumnHeaderSearchable_OnSearch(object sender, RoutedEventArgs e)
        {
            var searchTerm = (string)e.OriginalSource;
            var columnTag = (sender as GridViewColumnHeaderSearchable)?.Tag;
            var viewModel = (IChannelCodesListViewModel)DataContext;
            viewModel.Filter(columnTag, searchTerm);
        }
        //private void ChannelType_SelectionChanged(object sender, SelectionChangedEventArgs e)
        //{
        //    if( e.RemovedItems.Count == 0) { return; }
        //    if( !(DataContext is ChannelCodesListViewModel vm)) { return; }
        //    if( !(((System.Windows.Controls.Control) e.Source).DataContext is IChannelCode channelCode)) { return; }

        //    vm.MarkModified(channelCode);
        //}
        private void GridViewColumnHeader_OnClick(object sender, RoutedEventArgs e)
        {
            var vm = (IChannelCodesListViewModel)DataContext;
            var columnTag = (sender as GridViewColumnHeaderSearchable)?.Tag ?? Utils.FindChild<GridViewColumnHeaderSearchable>((DependencyObject)e.OriginalSource, null)?.Tag;
            vm?.Sort(columnTag, true);
        }
        private void ChannelCodeTextBox_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }
            if (!(((System.Windows.Controls.Control)e.Source).DataContext is IChannelCode channelCode)) { return; }

            vm.MarkModified(channelCode);
        }

        private void ChannelCodeTextBoxUser_TextChanged(object sender, TextChangedEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }
            if (!(sender is Control control)) { return; }
            if (!(control.DataContext is IChannelCode channelCode)) { return; }
            var notUsed1 = new List<string>();
            var notUsed2 = new List<string>();
            vm.MarkModified(channelCode);
            vm.ValidateUser(ref notUsed1, ref notUsed2);
        }

        private void ChannelCodeTextBoxIso_TextChanged(object sender, TextChangedEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }
            if (!(sender is Control control)) { return; }
            if (!(control.DataContext is IChannelCode channelCode)) { return; }
            vm.MarkModified(channelCode);
            var notUsed1 = new List<string>();
            var notUsed2 = new List<string>();
            vm.ValidateISO(ref notUsed1, ref notUsed2);
        }

        private void DisplayNameTextBox_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }
            if (!(((System.Windows.Controls.Control)e.Source).DataContext is IChannelCode channelCode)) { return; }

            vm.MarkModified(channelCode);
        }

        private void DisplayNameTextBoxUser_TextChanged(object sender, TextChangedEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }
            if (!(e.Source is TextBox textBox)) { return; }
            if (!(textBox.DataContext is IChannelCode channelCode)) { return; }

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

        private void DisplayNameTextBoxIso_TextChanged(object sender, TextChangedEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }
            if (!(e.Source is TextBox textBox)) { return; }
            if (!(textBox.DataContext is IChannelCode channelCode)) { return; }

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

        private void ISO_Checked(object sender, RoutedEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }

            vm.ViewMode = ChannelCodesListViewModel.ViewModes.ISO;
        }

        private void User_Checked(object sender, RoutedEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }

            vm.ViewMode = ChannelCodesListViewModel.ViewModes.User;
        }

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

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

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

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

        private void ChannelCodeBuilder_OnChannelCodeSelected(object sender, string code, string name, ChannelEnumsAndConstants.ChannelCodeType codetype)
        {
            if (!(DataContext is ChannelCodesListViewModel viewModel)) { return; }

            if (!(sender is Control control)) { return; }

            if (!(control.DataContext is IChannelCode channelCode)) { return; }

            channelCode.Code = code;
            if (string.IsNullOrWhiteSpace(channelCode.Name))
            {
                channelCode.Name = name;
            }
            viewModel.MarkModified(channelCode);
        }

        private void ISOChannelCodesListView_PreviewMouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
        {
            var point = e.GetPosition(ISOChannelCodesListView);

            //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 = ISOChannelCodesListView.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 = (IChannelCodesListViewModel)DataContext;
            if (element is TextBlock tb)
            {
                if (tb.Text == ChannelCodes.Resources.StringResources.ISOCode) { vm?.Sort(ISOCodeColumnHeader.Tag, true); }
                if (tb.Text == ChannelCodes.Resources.StringResources.ISOChannelName) { vm?.Sort(ISOChannelNameColumnHeader.Tag, true); }
                return;
            }
            if (ISOCodeColumnHeader.IsDescendantOf(element) || ISOCodeColumnHeader.IsDescendantOf(element2))
            {
                vm?.Sort(ISOCodeColumnHeader.Tag, true);
                return;
            }
            if (ISOChannelNameColumnHeader.IsDescendantOf(element) || ISOChannelNameColumnHeader.IsDescendantOf(element2))
            {
                vm?.Sort(ISOChannelNameColumnHeader.Tag, true);
            }
        }

        private void UserChannelCodesListView_PreviewMouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
        {
            var point = e.GetPosition(UserChannelCodesListView);

            //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 = UserChannelCodesListView.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 = (IChannelCodesListViewModel)DataContext;
            if (element is TextBlock tb)
            {
                if (tb.Text == ChannelCodes.Resources.StringResources.UserCode) { vm?.Sort(UserCodeColumnHeader.Tag, true); }
                if (tb.Text == ChannelCodes.Resources.StringResources.UserChannelName) { vm?.Sort(UserChannelNameColumnHeader.Tag, true); }
                return;
            }
            if (UserCodeColumnHeader.IsDescendantOf(element) || UserCodeColumnHeader.IsDescendantOf(element2))
            {
                vm?.Sort(UserCodeColumnHeader.Tag, true);
                return;
            }
            if (UserChannelNameColumnHeader.IsDescendantOf(element) || UserChannelNameColumnHeader.IsDescendantOf(element2))
            {
                vm?.Sort(UserChannelNameColumnHeader.Tag, true);
            }
        }

        //FB 25725 ISO selection has been changed, update the iso selection
        private void DisplayNameTextBoxIso_SelectionChanged(object sender, RoutedEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }
            if (!(((Control)e.Source).DataContext is IChannelCode channelCode)) { return; }

            vm.SetISOSelection(new List<IChannelCode> { channelCode }.ToArray());
        }

        //FB 25725 ISO selection has been changed, update the iso selection
        private void ChannelCodeBuilder_SelectionChanged(object sender, RoutedEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }
            if (!(sender is Control control)) { return; }
            if (!(control.DataContext is IChannelCode channelCode)) { return; }

            vm.SetISOSelection(new List<IChannelCode> { channelCode }.ToArray());
        }

        //FB 25725 User code selection has been changed, update the user code selection
        private void DisplayNameTextBoxUser_SelectionChanged(object sender, RoutedEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }
            if (!(((Control)e.Source).DataContext is IChannelCode channelCode)) { return; }

            vm.SetUserSelection(new List<IChannelCode> { channelCode }.ToArray());
        }

        //FB 25725 User code selection has been changed, update the user code selection
        private void ChannelCodeTextBoxUser_SelectionChanged(object sender, RoutedEventArgs e)
        {
            if (!(DataContext is ChannelCodesListViewModel vm)) { return; }
            if (!(sender is Control control)) { return; }
            if (!(control.DataContext is IChannelCode channelCode)) { return; }

            vm.SetUserSelection(new List<IChannelCode> { channelCode }.ToArray());
        }
    }
}