using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.Json;
using System.Text.Json.Serialization;

namespace JsonConverterRepro
{
    class Program
    {
        static void Main(string[] args)
        {
            var options = new JsonSerializerOptions();
            // Program works as expected when this line is uncommented:
            // options.Converters.Add(new DummyConverter());

            var json = @"{ ""Items"": [""hello"", 1, true] }";
            var model = JsonSerializer.Deserialize<MyModel>(json, options);

            Console.WriteLine(string.Join(", ", model.Items));
        }

        class MyModel
        {
            [JsonConverter(typeof(ToStringConverter))]
            public List<string> Items { get; set; }
        }

        // This converter coerces list items into strings when deserializing
        class ToStringConverter : JsonConverter<List<string>>
        {
            public override List<string> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
            {
                using var doc = JsonDocument.ParseValue(ref reader);
                return doc.RootElement.EnumerateArray().Select(e => e.ToString()).ToList();
            }

            public override void Write(Utf8JsonWriter writer, List<string> value, JsonSerializerOptions options)
            {
                JsonSerializer.Serialize(writer, value, options);
            }
        }

        class DummyConverter : JsonConverter<List<string>>
        {
            public override List<string> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) =>
                throw new NotImplementedException();

            public override void Write(Utf8JsonWriter writer, List<string> value, JsonSerializerOptions options) =>
                throw new NotImplementedException();
        }
    }
}