using Newtonsoft.Json;
using Newtonsoft.Json.Converters;

namespace YLErp.Converter2
{
    public class EnumConverter : StringEnumConverter
    {
        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        {
            if (reader.TokenType == JsonToken.Null || string.IsNullOrEmpty(reader.Value?.ToString()))
            {
                return existingValue;
            }
            else
            {
                return base.ReadJson(reader, objectType, existingValue, serializer);
            }
        }

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
            if (value == null)
            {
                writer.WriteNull();
            }
            else
            {
                writer.WriteValue(value);
            }
        }
    }
}