using System.Globalization;
using Avalonia.Data.Converters;
using Avalonia.Media;
using ClaudeDo.Ui.ViewModels.Modals;

namespace ClaudeDo.Ui.Converters;

public sealed class DiffLineKindToBrushConverter : IValueConverter
{
    private static readonly ISolidColorBrush Added = new SolidColorBrush(Color.Parse("#66BB6A"));
    private static readonly ISolidColorBrush Removed = new SolidColorBrush(Color.Parse("#EF5350"));
    private static readonly ISolidColorBrush Hunk = new SolidColorBrush(Color.Parse("#42A5F5"));
    private static readonly ISolidColorBrush Header = new SolidColorBrush(Color.Parse("#9E9E9E"));
    private static readonly ISolidColorBrush Default = new SolidColorBrush(Color.Parse("#CFD8DC"));

    public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture) =>
        value is WorktreeDiffLineKind kind
            ? kind switch
            {
                WorktreeDiffLineKind.Added   => Added,
                WorktreeDiffLineKind.Removed => Removed,
                WorktreeDiffLineKind.Hunk    => Hunk,
                WorktreeDiffLineKind.Header  => Header,
                _                            => Default,
            }
            : Default;

    public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
        => throw new NotSupportedException();
}