using System.Windows;
using System.Windows.Controls;

namespace Explorer.App;

public static class DetailsColumnLayout
{
    public static readonly DependencyProperty ShowFreeSpaceProperty =
        DependencyProperty.RegisterAttached(
            "ShowFreeSpace",
            typeof(bool),
            typeof(DetailsColumnLayout),
            new PropertyMetadata(true, OnShowFreeSpaceChanged));

    public static void SetShowFreeSpace(ListView element, bool value)
        => element.SetValue(ShowFreeSpaceProperty, value);

    public static bool GetShowFreeSpace(ListView element)
        => (bool)element.GetValue(ShowFreeSpaceProperty);

    private static void OnShowFreeSpaceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        if (d is ListView list)
        {
            Apply(list);
            list.Loaded -= OnLoaded;
            list.Loaded += OnLoaded;
        }
    }

    private static void OnLoaded(object sender, RoutedEventArgs e)
    {
        if (sender is ListView list)
        {
            Apply(list);
        }
    }

    private static void Apply(ListView list)
    {
        if (list.View is not GridView view)
        {
            return;
        }

        var show = GetShowFreeSpace(list);
        foreach (var column in view.Columns)
        {
            var title = column.Header?.ToString() ?? "";
            title = title.Replace(" ▲", "", StringComparison.Ordinal).Replace(" ▼", "", StringComparison.Ordinal).Trim();
            if (title == "Free space")
            {
                column.Width = show ? 110 : 0;
            }
        }

        ListViewLayout.Stretch(list);
    }
}