using System;

using System.Collections.Generic;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

​

public class Header {

    public string action { get; set; }

}

​

public class ClientConnect {

    public string name { get; set; }

    public string pasww { get; set; }

}

​

public class ClientMessage {

    public string name { get; set; }

    public string pasww { get; set; }

}

​

public class Body {

    public string name { get; set; }

    public string content { get; set; }

    public int num { get; set; }

    public int num2 { get; set; }

}

​

public interface IBody {}

​

public class Request {

    public Header header { get; set; } = new Header();

    public IBody body { get; set; }

}

​

public class GetBody : IBody

{

    public string name { get; set; }

}

​

public class UpdateBody : IBody

{

    public string name { get; set; }

    public string content { get; set; }

}

​

public class Controller {

    public void Update(string name, string content) {

        Console.WriteLine($"update book named {name} to have content {content}");

    }

    public void Get(string name) {

        Console.WriteLine("client wants to get a book - send it back");

    }

}

​

public class RequestHandler {

    private readonly Controller controller;

    public RequestHandler(Controller controller) {

        this.controller = controller;

    }

//  public void HandleRequest(Request req) {

//      switch (req.header.action) {

//          case "UPDATE": controller.Update(req.body.name, req.body.content); break;

//          case "GET": controller.Get(req.body.name); break;

//          default: Console.WriteLine("BOOM"); break;

//      }

//  }

    public void HandleRequest2(string str) {

        JObject j = JObject.Parse(str);

        switch (j["header"]["action"].ToString()) {

            case "UPDATE": {

                UpdateBody body = JsonConvert.DeserializeObject<UpdateBody>(j["body"].ToString());

                controller.Update(body.name, body.content);

                break;

            }

            case "GET": {

                GetBody body = JsonConvert.DeserializeObject<GetBody>(j["body"].ToString());

                controller.Get(body.name);

                break;

            }

            default: Console.WriteLine("BOOM"); break;

        }

    }

}

​

public class Program

{

    public static void Main()

    {

        //var obj = new Request();

        //obj.header.action = "UPDATE";

        //obj.body.name = "Hobbit";

        //obj.body.num = 42;

        //obj.body.content = "asdfasdfsd";

        //string str = JsonConvert.SerializeObject(obj);

        string str = "{\"header\":{\"action\":\"UPDATE\"},\"body\":{\"name\":\"Hobbit\",\"content\":\"asdfasdfsd\",\"num\":42,\"num2\":0}}";

​

        // you transfer str to server

        Controller control = new Controller();

        RequestHandler handler = new RequestHandler(control);

        //var request = JsonConvert.DeserializeObject<Request>(str);

        //handler.HandleRequest(request);

        //Console.WriteLine(request.header.action);

        handler.HandleRequest2(str);

        //obj.header.action = "GET";

        //str = JsonConvert.SerializeObject(obj);

        str = "{\"header\":{\"action\":\"GET\"},\"body\":{\"name\":\"Hobbit\"}}";

        handler.HandleRequest2(str);

    }

}

​

​