using System;

using System.Net;

using System.Net.Http;

using System.Net.Http.Headers;

using System.Text;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}

​

class Repository {

    private static string token;

    private static string refreshToken;

    private static HttpResponseMessage RefreshToken(HttpClient httpClient) {

        return null;

    }

    private static HttpResponseMessage RequestWrapper(HttpMethod httpMethod, string apiUrl, Func<HttpClient, HttpRequestMessage, HttpResponseMessage> apiRequest) {

        using (var httpClient = new HttpClient()) {

            using (var request = new HttpRequestMessage(httpMethod, apiUrl)) {

                // send request

                var response = apiRequest(httpClient, request);

                if (response.StatusCode == HttpStatusCode.Unauthorized) {

                    var refreshResponse = RefreshToken(httpClient);

                    // TDOO find out what is error status code for refresh token

                    if (refreshResponse.StatusCode == HttpStatusCode.BadRequest) 

                        return refreshResponse;

                    return apiRequest(httpClient, request);

                }

                return response;

            }

        }

    }

    public void CreateBranch(string branchName) {

        RequestWrapper(new HttpMethod("POST"), "https://bitbucket.org/site/oauth2/access_token", delegate (HttpClient httpClient, HttpRequestMessage request) {

            var base64authorization = Convert.ToBase64String(Encoding.ASCII.GetBytes("client_id:secret"));

            request.Headers.TryAddWithoutValidation("Authorization", $"Basic {base64authorization}");

​

            var contentList = new List<string>();

            contentList.Add("grant_type=refresh_token");

            contentList.Add("refresh_token={refresh_token}");

            request.Content = new StringContent(string.Join("&", contentList));

            request.Content.Headers.ContentType = MediaTypeHeaderValue.Parse("application/x-www-form-urlencoded");

​

            return httpClient.Send(request);

        });

    }

    public bool DeleteBranch(string branchName) {

        return RequestWrapper(new HttpMethod("POST"), "https://bitbucket.org/site/oauth2/access_token", delegate (HttpClient httpClient, HttpRequestMessage request) {

            var base64authorization = Convert.ToBase64String(Encoding.ASCII.GetBytes("client_id:secret"));

            request.Headers.TryAddWithoutValidation("Authorization", $"Basic {base64authorization}");

​

            var contentList = new List<string>();

            contentList.Add("grant_type=refresh_token");

            contentList.Add("refresh_token={refresh_token}");

            request.Content = new StringContent(string.Join("&", contentList));

            request.Content.Headers.ContentType = MediaTypeHeaderValue.Parse("application/x-www-form-urlencoded");

​

            return httpClient.Send(request);

        }).StatusCode == HttpStatusCode.OK;

    }

}