/*************************************************************************
 * ModernUO                                                              *
 * Copyright (C) 2019-2020 - ModernUO Development Team                   *
 * Email: hi@modernuo.com                                                *
 * File: NullableStructSerializerFactory.cs                              *
 *                                                                       *
 * This program is free software: you can redistribute it and/or modify  *
 * it under the terms of the GNU General Public License as published by  *
 * the Free Software Foundation, either version 3 of the License, or     *
 * (at your option) any later version.                                   *
 *                                                                       *
 * You should have received a copy of the GNU General Public License     *
 * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
 *************************************************************************/

namespace System.Text.Json.Serialization
{
    public class NullableStructSerializerFactory : JsonConverterFactory
    {
        public override bool CanConvert(Type typeToConvert)
        {
            if (!typeToConvert.IsGenericType || typeToConvert.GetGenericTypeDefinition() != typeof(Nullable<>))
                return false;

            var structType = typeToConvert.GenericTypeArguments[0];
            return !structType.IsPrimitive && structType.Namespace?.StartsWith(nameof(System)) != true && !structType.IsEnum;
        }

        public override JsonConverter CreateConverter(Type typeToConvert, JsonSerializerOptions options) =>
            (JsonConverter)Activator.CreateInstance(
                typeof(NullableStructSerializer<>).MakeGenericType(typeToConvert.GenericTypeArguments[0])
            );
    }
}