From b5a816951b8155e992f51e38dd279158c960f57b Mon Sep 17 00:00:00 2001
From: CheshireCaat <likangt2012@gmail.com>
Date: Thu, 23 Jan 2020 08:31:40 +0300
Subject: [PATCH] Add UpdateUsernameAsync method. Add CheckUsernameAsync
 method.

---
 TLSharp.Core/TelegramClient.cs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/TLSharp.Core/TelegramClient.cs b/TLSharp.Core/TelegramClient.cs
index d86b349..ffc334c 100644
--- a/TLSharp.Core/TelegramClient.cs
+++ b/TLSharp.Core/TelegramClient.cs
@@ -234,6 +234,26 @@ namespace TLSharp.Core
             return (T)result;
         }
 
+        public async Task<TLUser> UpdateUsernameAsync(string username)
+        {
+            if (!IsUserAuthorized())
+                throw new InvalidOperationException("Authorize user first!");
+
+            var req = new TLRequestUpdateUsername { Username = username };
+
+            return await SendRequestAsync<TLUser>(req);
+        }
+
+        public async Task<bool> CheckUsernameAsync(string username)
+        {
+            if (!IsUserAuthorized())
+                throw new InvalidOperationException("Authorize user first!");
+
+            var req = new TLRequestCheckUsername { Username = username };
+
+            return await SendRequestAsync<bool>(req);
+        }
+
         public async Task<TLImportedContacts> ImportContactsAsync(IReadOnlyList<TLInputPhoneContact> contacts)
         {
             if (!IsUserAuthorized())