upd проверка сквозной авторизации

SvetoforVKBot/Models/Commands/Registration/GetLoginCommand.cs

@@ -11,6 +11,7 @@ using VkNet.Model.Keyboard;
 using VkNet.Model.RequestParams;
 using System.Linq;
 using SvetoforVKBot.Services;
+using SvetoforVKBot.Models.Commands.LK;
 
 namespace SvetoforVKBot.Models.Commands.Registration
 {
@@ -30,6 +31,35 @@ namespace SvetoforVKBot.Models.Commands.Registration
                     string login = update.@object.message.text.Trim();
                     string message = "";
                     var user = db.Users.Single(usr => usr.chatId == chatId);
+                    if (checkAuthStatus(login))
+                    {
+                        user.isAuthorized = 1;
+                        user.tag = "Подписчик - Регистрация - Пол";
+                        db.SaveChanges();
+
+                        if (user.reg == 1)
+                        {
+                            ShowLKCommand showLK = new ShowLKCommand();
+                            showLK.Execute(update, client, db);
+                        }
+                        else
+                        {
+                            keyboardBuilder
+                                .AddButton("М", "selectGender-1", KeyboardButtonColor.Primary)
+                                .AddButton("Ж", "selectGender-2", KeyboardButtonColor.Primary)
+                                .AddLine()
+                                .AddButton("Отменить", "startPL", KeyboardButtonColor.Default);
+
+                            @params.Keyboard = keyboardBuilder.Build();
+                            @params.UserId = chatId;
+                            @params.Message =  //1 шаг из 4. 
+                                "✅ Авторизация прошла успешно.\n" +
+                                "Выберите на клавиатуре внизу или напишите пол в формате \"М\" или \"Ж\"";
+                            @params.RandomId = GetRandomId();
+                            client.Messages.SendAsync(@params);
+                        }
+                        return;
+                    }
                     string pincode = PasswordService.GeneratePassword();
                     string hash = PasswordService.CreateMD5(pincode + chatId.ToString());
                     message = $"Ваш код подтверждения: {pincode}";
@@ -81,5 +111,37 @@ namespace SvetoforVKBot.Models.Commands.Registration
 
             return BitConverter.ToInt32(intBytes, 0);
         }
+
+        public static string StringSha256Hash(string text) =>
+            string.IsNullOrEmpty(text) ? string.Empty : BitConverter.ToString(new System.Security.Cryptography.SHA256Managed().ComputeHash(System.Text.Encoding.UTF8.GetBytes(text))).
+            Replace("-", string.Empty);
+
+        private bool checkAuthStatus(string login)
+        {
+            HttpClient client = new HttpClient();
+            string sault = @"{ YDB * mhB * *0SuQ([WU.TSuJt.j47}UW{";
+            string uri = String.Format("https://new.vyatsu.ru/api/user_tmp_id/get/?user={0}&hash={1}", login, StringSha256Hash(login + sault));
+            var result = client.GetAsync(uri);
+            result.Wait();
+            HttpResponseMessage resp = result.Result;
+            if (resp.StatusCode == System.Net.HttpStatusCode.OK)
+            {
+                var bodyreader = resp.Content.ReadAsStringAsync();
+                bodyreader.Wait();
+                string body = bodyreader.Result;
+                if (body.Contains(login))
+                    return true;
+            }
+            return false;
+        }
+
+        private void getAuthStatus(string login)
+        {
+            HttpClient client = new HttpClient();
+            string sault = @"{ YDB * mhB * *0SuQ([WU.TSuJt.j47}UW{";
+            string uri = String.Format("https://new.vyatsu.ru/api/user_tmp_id/get/?user={0}&hash={1}", login, StringSha256Hash(login + sault));
+            var result = client.GetAsync(uri);
+        }
+
     }
 }