//This method is added as part of spfx changes. This method gets the authentication token
        private static async Task <string> GetAuthenticationToken()
        {
            string tenantName  = SettingsConfig.AppSetting("TenantName");
            string tenantID    = SettingsConfig.AppSetting("TenantID");
            string resourceID  = SettingsConfig.AppSetting("ResourceID");
            string appClientID = SettingsConfig.AppSetting("AppClientID");
            string appSecret   = SettingsConfig.AppSetting("AppSecret");

            string clientID = appClientID + "@" + tenantID;
            string url      = "https://accounts.accesscontrol.windows.net/tokens/OAuth/2";
            string res      = resourceID + "/" + tenantName + ".sharepoint.com@" + tenantID;
            string body     = $"grant_type=client_credentials&client_id={clientID}&client_secret={appSecret}&resource={res}";

            HttpClient httpclient = new HttpClient();
            var        request    = new HttpRequestMessage(HttpMethod.Post, url);

            request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            request.Content = (new StringContent(body, Encoding.UTF8, "application/x-www-form-urlencoded"));
            HttpResponseMessage response = await httpclient.SendAsync(request);

            string responseBody = await response.Content.ReadAsStringAsync();

            if (!response.IsSuccessStatusCode)
            {
                throw new Exception(responseBody);
            }

            string accessToken = null;

            accessToken = JsonConvert.DeserializeObject <SharepointRepository.TokenResponse>(responseBody).access_token;
            return(accessToken);
        }
        public static async Task <bool> WriteConversationToSPList(Values body)
        {
            try
            {
                string accessToken = await SharepointRepository.GetAuthenticationToken();

                string tenantName = SettingsConfig.AppSetting("TenantName");
                string siteName   = SettingsConfig.AppSetting("SiteName");
                string listName   = SettingsConfig.AppSetting("ListName");

                string endpoint = "https://" + tenantName + ".sharepoint.com/sites/" + siteName + "/_api/web/lists/GetByTitle('" + listName + "')/items";

                string itemPostBody = "{" +
                                      "'Description': '" + body.Description + "', " +
                                      "'UserName':'******'," +
                                      "'Name':'" + body.Name + "'," +
                                      "'Address':'" + body.Address + "'" +
                                      "}";
                Byte[] itemPostData = System.Text.Encoding.ASCII.GetBytes(itemPostBody);

                HttpWebRequest itemRequest =
                    (HttpWebRequest)HttpWebRequest.Create(endpoint.ToString());
                itemRequest.Method        = "POST";
                itemRequest.ContentLength = itemPostBody.Length;
                itemRequest.ContentType   = "application/json";
                itemRequest.Accept        = "application/json";
                itemRequest.Accept        = "*/*";
                itemRequest.Headers.Add("Authorization", "Bearer " + accessToken);
                itemRequest.Headers.Add("Host", "avadheshftc.sharepoint.com");
                Stream itemRequestStream = itemRequest.GetRequestStream();

                itemRequestStream.Write(itemPostData, 0, itemPostData.Length);
                itemRequestStream.Close();

                HttpWebResponse itemResponse = (HttpWebResponse)itemRequest.GetResponse();
            }
            catch (Exception)
            {
                throw;
            }

            return(true);
        }