using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Serialization.Formatters;

using System.IO;

using System.Data;

using System.ComponentModel.DataAnnotations;

using System.Globalization;

using System.Reflection;

using System.Collections.ObjectModel;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

using NUnit.Framework; // Throws NUnit.Framework.AssertionException

​

//https://stackoverflow.com/questions/73122378/migrate-newtonsoft-jsonconverter-to-jsonconvertert

​

    public interface IApiResult<TResult> : IApiResult

    {

        TResult Result { get; set; }

    }

    public class ApiResult<TResult> : ApiResult, IApiResult<TResult>

    {

        public ApiResult( TResult result ) : base() {

            Result = result;

        }

​

        public TResult Result { get; set; }

    }

​

    public class ApiResultConverter : JsonConverter

    {

        //public override bool CanConvert(Type objectType) => throw new NotImplementedException(); // What should go here?

        public override object ReadJson( JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer ) {

            var obj = JObject.Load( reader );

            var apiResult = new ApiResult.ApiResult().As<IApiResult>();

            //Check if is an IApiResult<T>

            if (obj.TryGetValue( nameof( ApiResult<object>.Result ), StringComparison.InvariantCultureIgnoreCase, out var jResult )) {

                //Retrieve the result property type in order to create the proper apiResult object

                var prop = objectType.GetProperty( nameof( ApiResult<object>.Result ) );

                var value = jResult.ToObject( prop.PropertyType, serializer );

                var rType = typeof( ApiResult<> ).MakeGenericType( prop.PropertyType );

                apiResult = Activator.CreateInstance( rType ).As<IApiResult>();

                prop.SetValue( apiResult, value );

            }

            //Set the messages

            var jMessages = obj.GetValue( nameof( ApiResult.ApiResult.Messages ), StringComparison.InvariantCultureIgnoreCase ).ToObject<JObject[]>();

            apiResult.Messages = DeserializeReasons( jMessages );

            return apiResult;

        }

        public override bool CanWrite => false;

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) => throw new NotImplementedException();

    }

​

    class TestClass

    {

        public static void Test()

        {

        }   

    }

​

    public static partial class JsonExtensions

    {

        public static JsonReader AssertTokenType(this JsonReader reader, JsonToken tokenType) => 

            reader.TokenType == tokenType ? reader : throw new JsonSerializationException(string.Format("Unexpected token {0}, expected {1}", reader.TokenType, tokenType));

        public static JsonReader ReadToContentAndAssert(this JsonReader reader) =>

            reader.ReadAndAssert().MoveToContentAndAssert();

​

        public static JsonReader MoveToContentAndAssert(this JsonReader reader)

        {

            if (reader == null)

                throw new ArgumentNullException();

            if (reader.TokenType == JsonToken.None)       // Skip past beginning of stream.

                reader.ReadAndAssert();

            while (reader.TokenType == JsonToken.Comment) // Skip past comments.

                reader.ReadAndAssert();

            return reader;

        }

​

        public static JsonReader ReadAndAssert(this JsonReader reader)

        {

            if (reader == null)

                throw new ArgumentNullException();

            if (!reader.Read())

                throw new JsonReaderException("Unexpected end of JSON stream.");

            return reader;

        }

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: {0} ({1})", System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription , Environment.Version);

            Console.WriteLine("{0} version: {1}", typeof(JsonSerializer).Assembly.GetName().Name,  typeof(JsonSerializer).Assembly.FullName);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Failed with unhandled exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​