Add contacts.GetContacts method to client

TLSharp.Core/MTProto/TL.cs

@@ -5960,6 +5960,12 @@ namespace TLSharp.Core.MTProto
         }
     }
 
+    public class ContactsContacts
+    {
+        public IList<Contact> Contacts { get; set; }
+        public IList<User> Users { get; set; }
+    }
+
     public class MessageDialogs
     {
         public int? Count { get; set; }

TLSharp.Core/Requests/GetContactRequest

@@ -1,72 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using TLSharp.Core.MTProto;
-
-namespace TLSharp.Core.Requests
-{
-    public class GetContactRequest : MTProtoRequest
-    {
-        private List<int> currentContacts { get; set; }
-
-        public List<Contact> contacts;
-        public List<UserContactConstructor> users;
-
-        public GetContactRequest(List<int> currentContactsID = null)
-        {
-            currentContacts = currentContactsID;
-        }
-
-        public override void OnSend(BinaryWriter writer)
-        {
-            writer.Write(0x22c6aa08);
-            if (currentContacts == null)
-                Serializers.String.write(writer, "");
-            else
-            {
-                string hash = "";
-                foreach (var currentUserID in currentContacts)
-                {
-                    var md5 = Utils.Helpers.md5(currentUserID.ToString());
-                    hash += md5 + ",";
-                }
-                hash = hash.Length > 0 ? hash.Remove(hash.LastIndexOf(','), 1) : Utils.Helpers.md5( hash);
-                Serializers.String.write(writer, hash);
-            }
-        }
-
-        public override void OnResponse(BinaryReader reader)
-        {
-            var code = reader.ReadUInt32();
-            var result = reader.ReadInt32(); // vector code
-            int contact_len = reader.ReadInt32();
-            this.contacts = new List<Contact>(contact_len);
-            for (int imported_index = 0; imported_index < contact_len; imported_index++)
-            {
-                Contact imported_element;
-                imported_element = TL.Parse<Contact>(reader);
-                this.contacts.Add(imported_element);
-            }
-            reader.ReadInt32(); // vector code
-            int users_len = reader.ReadInt32();
-            this.users = new List<UserContactConstructor>(users_len);
-            for (int users_index = 0; users_index < users_len; users_index++)
-            {
-                UserContactConstructor users_element;
-                users_element = TL.Parse<UserContactConstructor>(reader);
-                this.users.Add(users_element);
-            }
-        }
-
-        public override void OnException(Exception exception)
-        {
-            throw new NotImplementedException();
-        }
-        public override bool Confirmed { get { return true; } }
-        private readonly bool responded;
-        public override bool Responded { get { return responded; } }
-    }
-}

TLSharp.Core/Requests/GetContactsRequest.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TLSharp.Core.MTProto;
+using System.Security.Cryptography;
+
+namespace TLSharp.Core.Requests
+{
+    public class GetContactsRequest : MTProtoRequest
+    {
+        private List<int> CurrentContacts { get; set; }
+
+        public List<Contact> Contacts;
+        public List<User> Users;
+
+        public GetContactsRequest(IList<int> currentContacts = null)
+        {
+            if (currentContacts != null)
+            {
+                CurrentContacts = currentContacts.ToList();
+                CurrentContacts.Sort();
+            }
+        }
+
+        public override void OnSend(BinaryWriter writer)
+        {
+            writer.Write(0x22c6aa08);
+            if (CurrentContacts == null)
+                Serializers.String.write(writer, "");
+            else
+            {
+                // create CSV of contactids and calculate md5 hash
+                string hash;
+                var list = string.Join(",", CurrentContacts);
+                using (var md5 = MD5.Create())
+                {
+                    var retVal = md5.ComputeHash(Encoding.UTF8.GetBytes(list));
+                    var sb = new StringBuilder();
+                    foreach (var t in retVal)
+                    {
+                        sb.Append(t.ToString("x2"));
+                    }
+                    hash = sb.ToString();
+                }
+
+                Serializers.String.write(writer, hash);
+            }
+        }
+
+        public override void OnResponse(BinaryReader reader)
+        {
+            var code = reader.ReadUInt32();
+            // if contactsNotModified then exit
+            if (code == 0xb74ba9d2) return;
+
+            reader.ReadInt32(); // vector code
+            var contactLen = reader.ReadInt32();
+            Contacts = new List<Contact>(contactLen);
+            for (var importedIndex = 0; importedIndex < contactLen; importedIndex++)
+            {
+                var importedElement = TL.Parse<Contact>(reader);
+                this.Contacts.Add(importedElement);
+            }
+            reader.ReadInt32(); // vector code
+            var usersLen = reader.ReadInt32();
+            Users = new List<User>(usersLen);
+            for (var usersIndex = 0; usersIndex < usersLen; usersIndex++)
+            {
+                var usersElement = TL.Parse<User>(reader);
+                this.Users.Add(usersElement);
+            }
+        }
+
+        public override void OnException(Exception exception)
+        {
+            throw new NotImplementedException();
+        }
+        public override bool Confirmed { get { return true; } }
+        private readonly bool _responded;
+        public override bool Responded { get { return _responded; } }
+    }
+}

TLSharp.Core/TLSharp.Core.csproj

@@ -69,6 +69,7 @@
     <Compile Include="Requests\AuthSendSmsRequest.cs" />
     <Compile Include="Requests\AuthSignInRequest.cs" />
     <Compile Include="Requests\AuthSignUpRequest.cs" />
+    <Compile Include="Requests\GetContactsRequest.cs" />
     <Compile Include="Requests\GetDialogsRequest.cs" />
     <Compile Include="Requests\GetFileRequest.cs" />
     <Compile Include="Requests\GetHistoryRequest.cs" />

TLSharp.Core/TelegramClient.cs

@@ -105,8 +105,6 @@ namespace TLSharp.Core
                 request = new AuthSendCodeRequest(phoneNumber, (int)tokenDestination, _apiId, _apiHash, "en");
                 try
                 {
-
-
                     await _sender.Send(request);
                     await _sender.Receive(request);
 
@@ -282,5 +280,19 @@ namespace TLSharp.Core
 
             return regex.IsMatch(number);
         }
+
+        public async Task<ContactsContacts> GetContacts(IList<int> contactIds = null)
+        {
+            var request = new GetContactsRequest(contactIds);
+            await _sender.Send(request);
+            await _sender.Receive(request);
+
+            return new ContactsContacts
+            {
+                Contacts = request.Contacts,
+                Users = request.Users,
+            };
+        }
+
     }
 }