using YamlDotNet.Core;
using YamlDotNet.Core.Events;
using YamlDotNet.Serialization;

namespace Syntriax.Engine.Serialization;

public class TypeContainerConverter : IEngineTypeYamlConverter
{
    public bool Accepts(Type type) => type == typeof(TypeContainer);

    public object? ReadYaml(IParser parser, Type type, ObjectDeserializer rootDeserializer)
    {
        if (parser.Consume<Scalar>().Value.CompareTo(nameof(TypeContainer.Type)) != 0)
            throw new ArgumentException($"{nameof(TypeContainer)} mapping must start with {nameof(TypeContainer.Type)}");
        string typeFullName = parser.Consume<Scalar>().Value;

        return new TypeContainer() { Type = typeFullName };
    }

    public void WriteYaml(IEmitter emitter, object? value, Type type, ObjectSerializer serializer)
    {
        TypeContainer? typeContainer = (TypeContainer)value!;

        emitter.Emit(new Scalar(nameof(TypeContainer.Type)));
        emitter.Emit(new Scalar(typeContainer.Type));
    }
}