using System;

using RestSharp;

using RestSharp.Authenticators;

using Newtonsoft.Json.Linq;

​

class Program {

​

  public static string GetAuthToken(string clientId, string clientSecret) {

        var client = new RestClient("https://gateway-kot-dev.digital-ks.net/idp/oauth2/token");

            client.Timeout = -1;

            var request = new RestRequest(Method.POST);

            request.AddHeader("Content-Type", "application/x-www-form-urlencoded");

            client.Authenticator = new HttpBasicAuthenticator(clientId, clientSecret);

            request.AddHeader("Content-Type", "application/x-www-form-urlencoded");

            request.AddParameter("grant_type", "client_credentials");

            IRestResponse response = client.Execute(request);

            JObject result = JObject.Parse(response.Content);

            return result["access_token"].Value<string>();

  }

  public static string CallCheckSimService(string authToken, string phoneNumber, int activationHours) {

      var client = new RestClient("https://gateway-kot-dev.digital-ks.net/mock/api/v1alfa/msisdn/activation-check");

            client.Timeout = -1;

            var request = new RestRequest(Method.POST);

            request.AddHeader("Authorization", $"Bearer {authToken}");

            request.RequestFormat = DataFormat.Json;

            var data = new {

                msisdn = phoneNumber,

                activationHours = activationHours

            };

            request.AddJsonBody(data);

            IRestResponse response = client.Execute(request);

            return response.Content;

  }

​

​

  public static void Main (string[] args) {

    var token = GetAuthToken("mock_client_id", "mock_client_secret");

    var result = CallCheckSimService(token, "+38 (067) 0000-200", 48);

    Console.WriteLine(result);

  }

}