Add Chat.is_direct_messages.

telegram-bot-api/Client.cpp

@@ -1218,8 +1218,13 @@ class Client::JsonChat final : public td::Jsonable {
         if (!supergroup_info->active_usernames.empty()) {
           object("username", supergroup_info->active_usernames[0]);
         }
-        if (supergroup_info->is_supergroup && supergroup_info->is_forum) {
-          object("is_forum", td::JsonTrue());
+        if (supergroup_info->is_supergroup) {
+          if (supergroup_info->is_forum) {
+            object("is_forum", td::JsonTrue());
+          }
+          if (supergroup_info->is_direct_messages) {
+            object("is_direct_messages", td::JsonTrue());
+          }
         }
 
         if (supergroup_info->is_supergroup) {
@@ -14598,6 +14603,7 @@ void Client::add_supergroup(SupergroupInfo *supergroup_info, object_ptr<td_api::
   supergroup_info->status = std::move(supergroup->status_);
   supergroup_info->is_supergroup = !supergroup->is_channel_;
   supergroup_info->is_forum = supergroup->is_forum_;
+  supergroup_info->is_direct_messages = supergroup->is_direct_messages_group_;
   supergroup_info->has_location = supergroup->has_location_;
   supergroup_info->join_to_send_messages = supergroup->join_to_send_messages_;
   supergroup_info->join_by_request = supergroup->join_by_request_;

telegram-bot-api/Client.h

@@ -973,6 +973,7 @@ class Client final : public WebhookActor::Callback {
     object_ptr<td_api::ChatMemberStatus> status;
     bool is_supergroup = false;
     bool is_forum = false;
+    bool is_direct_messages = false;
     bool can_set_sticker_set = false;
     bool can_send_gift = false;
     bool is_all_history_available = false;