How to implement growing object with a design pattern? - asp.net-core

Question

I want to design a response and design it by responses in my asp.net core application. The simlpe response is like following.
public class Response {
public string Status { get; set; } => "Ok";
public BaseReport BaseReport { get;set;}
}
if user sends extra parameters to my service, I want to change my response content dynamically.
public class ReportsController : ControllerBase
{
[HttpGet]
public ActionResult<Response> GetReport(bool isEmployee, bool isFinanace, bool isInformatinTech)
{
// if all parameters fals, return base report.
var report = baseReposrService.Get();
var response = new Response() { BaseReport = report };
if(isEmployee)
{
var ereport = employeeService.Get();
var response = new Response() {
BaseReport = report,
EmployeeReport = ereport
};
}
if(isFinanace)
{
var freport = financeService.Get();
var response = new Response() {
BaseReport = report,
EmployeeReport = freport
};
}
...
...
}
}
the response object is growing by query parameters.
So, is implementing the decorator pattern for this problem right way? Is there any best practice for these type problems?

Answer 1

I tried as below:
public class Response
{
public Response()
{
BaseReport = new BaseReport();
}
public string Status { get; set; } ="Ok";
public BaseReport BaseReport { get; set; }
}
public class BaseReport
{
public string report { get; set; }
public string reportcontent { get; set; }
}
public interface IResponseFactory
{
IResponseFactory Add(string key);
Response Create(string key);
}
public class ResponseFactory1 : IResponseFactory
{
private readonly Dictionary<string, Response> _responsedic = new Dictionary<string, Response>();
public ResponseFactory1()
{
this.Add("Employee").Add("Finanace").Add("InformatinTech");
}
public IResponseFactory Add(string key)
{
var response = new Response();
response.BaseReport.report = key;
response.BaseReport.reportcontent = key + "content";
_responsedic.Add(key, response);
return this;
}
public Response Create(string responsename)
{
if (_responsedic.ContainsKey(responsename))
{
return _responsedic[responsename];
}
else
{
return new Response() { BaseReport = new BaseReport() { report = "basereport",reportcontent= "basereportcontent" } };
}
}
in startup class:
services.AddSingleton<IResponseFactory, ResponseFactory1>();
in controller:
[HttpGet]
public ActionResult<Response> GetReport(string responsetype)
{
var response = _responseFactory.Create(responsetype);
return response;
}