webdoorcreator/WebDoorCreator.Data/User/ClaimConverter.cs

using Newtonsoft.Json.Linq;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Claims;
using System.Text;
using System.Threading.Tasks;

namespace WebDoorCreator.Data.User
{
    /// <summary>
    /// Fix Serializzazione Claims x Newtonsoft.Json
    /// https://stackoverflow.com/questions/28155169/how-to-programmatically-choose-a-constructor-during-deserialization/54645939#54645939
    /// </summary>
    public class ClaimConverter : JsonConverter
    {
        public override bool CanConvert(Type objectType)
        {
            return (objectType == typeof(System.Security.Claims.Claim));
        }

        public override object ReadJson(JsonReader reader, Type objectType, object? existingValue, JsonSerializer serializer)
        {
            JObject jObj = JObject.Load(reader);
            string type = $"{jObj["Type"]}";
            string value = $"{jObj["Value"]}";
            string valueType = $"{jObj["ValueType"]}";
            string issuer = $"{jObj["Issuer"]}";
            string originalIssuer = $"{jObj["OriginalIssuer"]}";
            return new Claim(type, value, valueType, issuer, originalIssuer);
        }


        public override bool CanWrite
        {
            get { return false; }
        }

        public override void WriteJson(JsonWriter writer, object? value, JsonSerializer serializer)
        {
            // lascio eccezione perché è un deserializzatore "in sola lettura"
            throw new NotImplementedException(); 
        } 
    }
}