/*************************************************************************
 * ModernUO                                                              *
 * Copyright 2019-2020 - ModernUO Development Team                       *
 * Email: hi@modernuo.com                                                *
 * File: NullableStructSerializer.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 NullableStructSerializer<TStruct> : JsonConverter<TStruct?> where TStruct : struct
    {
        public override TStruct? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) =>
            reader.TokenType == JsonTokenType.Null
                ? default
                : JsonSerializer.Deserialize<TStruct>(ref reader, options);

        public override void Write(Utf8JsonWriter writer, TStruct? value, JsonSerializerOptions options)
        {
            if (value == null)
            {
                writer.WriteNullValue();
            }
            else
            {
                JsonSerializer.Serialize(writer, value.Value, options);
            }
        }
    }
}