using System;    

using System.Collections.Generic;

​

using System.Globalization;

using Newtonsoft.Json;

using Newtonsoft.Json.Converters;

​

public partial class WorldBankApiResponse

{

    [JsonProperty("indicator")]

    public WorldBankApiIdValue Indicator { get; set; }

​

    [JsonProperty("country")]

    public WorldBankApiIdValue Country { get; set; }

​

    [JsonProperty("countryiso3code")]

    public string Countryiso3Code { get; set; }

​

    [JsonProperty("date")]

    public string Date { get; set; }

​

    [JsonProperty("value")]

    public double Value { get; set; }

​

    [JsonProperty("unit")]

    public string Unit { get; set; }

​

    [JsonProperty("obs_status")]

    public string ObsStatus { get; set; }

​

    [JsonProperty("decimal")]

    public long Decimal { get; set; }

}

​

public partial class WorldBankApiIdValue

{

    [JsonProperty("id")]

    public string Id { get; set; }

​

    [JsonProperty("value")]

    public string Value { get; set; }

}

​

public partial class WorldBankApiResponseGlobal

{

    [JsonProperty("page")]

    public long Page { get; set; }

​

    [JsonProperty("pages")]

    public long Pages { get; set; }

​

    [JsonProperty("per_page")]

    public long PerPage { get; set; }

​

    [JsonProperty("total")]

    public long Total { get; set; }

​

    [JsonProperty("sourceid")]

    public string Sourceid { get; set; }

​

    [JsonProperty("sourcename")]

    public string Sourcename { get; set; }

​

    [JsonProperty("lastupdated")]

    public DateTimeOffset Lastupdated { get; set; }

}

​

public partial struct WorldBankApiResponseUnion

{

    public WorldBankApiResponseGlobal WorldBankApiResponseGlobal;

    public WorldBankApiResponse[] WorldBankApiResponse;

​

    public static implicit operator WorldBankApiResponseUnion(WorldBankApiResponseGlobal WorldBankApiResponseGlobal) => new WorldBankApiResponseUnion { WorldBankApiResponseGlobal = WorldBankApiResponseGlobal };

    public static implicit operator WorldBankApiResponseUnion(WorldBankApiResponse[] WorldBankApiResponse) => new WorldBankApiResponseUnion { WorldBankApiResponse = WorldBankApiResponse };

}

​

internal static class Converter

{

    public static readonly JsonSerializerSettings Settings = new JsonSerializerSettings

    {

        MetadataPropertyHandling = MetadataPropertyHandling.Ignore,

        DateParseHandling = DateParseHandling.None,

        Converters =

        {

            WorldBankApiResponseUnionConverter.Singleton,

            new IsoDateTimeConverter { DateTimeStyles = DateTimeStyles.AssumeUniversal }

        },

    };

}

internal class WorldBankApiResponseUnionConverter : JsonConverter

    {

        public override bool CanConvert(Type t) => t == typeof(WorldBankApiResponseUnion) || t == typeof(WorldBankApiResponseUnion?);

​

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

        {

            switch (reader.TokenType)

            {

                case JsonToken.StartObject:

                    var objectValue = serializer.Deserialize<WorldBankApiResponseGlobal>(reader);

                    return new WorldBankApiResponseUnion { WorldBankApiResponseGlobal = objectValue };

                case JsonToken.StartArray:

                    var arrayValue = serializer.Deserialize<WorldBankApiResponse[]>(reader);

                    return new WorldBankApiResponseUnion { WorldBankApiResponse = arrayValue };

            }

            throw new Exception("Cannot unmarshal type WorldBankApiResponseUnion");

        }

​

        public override void WriteJson(JsonWriter writer, object untypedValue, JsonSerializer serializer)

        {

            var value = (WorldBankApiResponseUnion)untypedValue;

            if (value.WorldBankApiResponse != null)

            {

                serializer.Serialize(writer, value.WorldBankApiResponse);

                return;

            }

            if (value.WorldBankApiResponseGlobal != null)

            {

                serializer.Serialize(writer, value.WorldBankApiResponseGlobal);

                return;

            }

            throw new Exception("Cannot marshal type WorldBankApiResponseUnion");

        }

​

        public static readonly WorldBankApiResponseUnionConverter Singleton = new WorldBankApiResponseUnionConverter();

    }

​

public class Program

{

    public static void Main()

    {

        string input = @"[

  {

    ""page"": 1,

    ""pages"": 1,

    ""per_page"": 50,

    ""total"": 2,

    ""sourceid"": ""2"",

    ""sourcename"": ""World Development Indicators"",

    ""lastupdated"": ""2021-10-28""

  },

  [

    {

      ""indicator"": {

        ""id"": ""NY.GDP.PCAP.KD.ZG"",

        ""value"": ""GDP per capita growth (annual %)""

      },

      ""country"": {

        ""id"": ""CA"",

        ""value"": ""Canada""

      },

      ""countryiso3code"": ""CAN"",

      ""date"": ""2020"",

      ""value"": -6.33904652535297,

      ""unit"": """",

      ""obs_status"": """",

      ""decimal"": 1

    }

  ]

]";

        var result = JsonConvert.DeserializeObject<WorldBankApiResponseUnion[]>(input, Converter.Settings);

        foreach(var item in result){

            item.WorldBankApiResponse.Dump();

            item.WorldBankApiResponseGlobal.Dump();

        }

​

    }

​

​

}