using WPFluent.Controls;
using WPFluent.Extensions;


// ReSharper disable once CheckNamespace
namespace WPFluent.Converters;

/// <summary>
/// Tries to convert <see cref="SymbolRegular"/> and <seealso cref="SymbolFilled"/>  to <see cref="SymbolIcon"/>.
/// </summary>
public class IconElementConverter : TypeConverter
{
    public override bool CanConvertFrom(ITypeDescriptorContext? context, Type sourceType)
    {
        if (sourceType == typeof(SymbolRegular))
        {
            return true;
        }

        if (sourceType == typeof(SymbolFilled))
        {
            return true;
        }

        return false;
    }

    public override bool CanConvertTo(ITypeDescriptorContext? context, Type? destinationType) => false;

    public override object? ConvertFrom(ITypeDescriptorContext? context, CultureInfo? culture, object? value) => value switch
    {
        SymbolRegular symbolRegular => new SymbolIcon(symbolRegular),
        SymbolFilled symbolFilled => new SymbolIcon(symbolFilled.Swap(), filled: true),
        _ => null,
    };

    public override object ConvertTo(
        ITypeDescriptorContext? context,
        CultureInfo? culture,
        object? value,
        Type destinationType)
    { throw GetConvertFromException(value); }
}