using System;

using Engine.Core;

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

namespace Engine.Serializers.Yaml;

public class Vector2DIntConverter : EngineTypeYamlSerializerBase<Vector2DInt>
{
    private static readonly int SUBSTRING_START_LENGTH = nameof(Vector2DInt).Length + 1;

    public override Vector2DInt Read(IParser parser, Type type, ObjectDeserializer rootDeserializer)
    {
        string value = parser.Consume<Scalar>().Value;
        string insideParenthesis = value[SUBSTRING_START_LENGTH..^1];
        string[] values = insideParenthesis.Split(", ");
        return new Vector2DInt(int.Parse(values[0]), int.Parse(values[1]));
    }

    public override void WriteYaml(IEmitter emitter, object? value, Type type, ObjectSerializer serializer)
    {
        Vector2DInt vector2DInt = (Vector2DInt)value!;
        emitter.Emit(new Scalar($"{nameof(Vector2DInt)}({vector2DInt.X}, {vector2DInt.Y})"));
    }
}