using System;

using System.Text.Json;

​

public class Program

{

    public static void Main()

    {

        var text =

@"{

  ""OpenApiConfig"": {

    ""AppUrl"": ""SomeAppUrl"",

    ""AuthenticationEndPoint"": ""SomeAuthenticationEndPoint"",

    ""TokenEndPoint"": ""SomeTokenEndPoint"",

    ""AppKey"": ""SomeAppKey"",

    ""OpenApiBaseUrl"": ""SomeBaseUrl"",

    ""StreamingUrl"": ""SomeStreamingUrl""

  }

}";     

        // Why settings all properties are empty?

        var settings = JsonSerializer.Deserialize<Settings>(text);

        Console.WriteLine(settings.OpenApiConfig);

    }

}

​

public record ApiConfig {

    public string AppUrl { get; init; } = string.Empty;

​

    public string AuthenticationEndPoint { get; init; } = string.Empty;

​

    public string TokenEndPoint { get; init; } = string.Empty;

​

    public string AppKey { get; init; } = string.Empty;

​

    public string OpenApiBaseUrl { get; init; } = string.Empty;

​

    public string StreamingUrl { get; set; } = string.Empty;

}

​

public class Settings {

    public ApiConfig OpenApiConfig { get; init; } = new();

}