From f43428d4d862f9850f33f029eb1d7a936a8c96f6 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Mon, 29 Apr 2024 16:46:51 +0300
Subject: [PATCH] Add shorthands for getChatMember with self for bots.

---
 td/telegram/ChatManager.cpp              | 6 ++++++
 td/telegram/DialogParticipantManager.cpp | 9 +++++++++
 2 files changed, 15 insertions(+)

diff --git a/td/telegram/ChatManager.cpp b/td/telegram/ChatManager.cpp
index 89d7927fe..d8f03a2ab 100644
--- a/td/telegram/ChatManager.cpp
+++ b/td/telegram/ChatManager.cpp
@@ -8115,6 +8115,12 @@ void ChatManager::get_chat_participant(ChatId chat_id, UserId user_id, Promise<D
     return promise.set_error(Status::Error(400, "Group not found"));
   }
 
+  if (td_->auth_manager_->is_bot() && user_id == td_->user_manager_->get_my_id()) {
+    // bots don't need inviter information
+    reload_chat(chat_id, Auto(), "get_chat_participant");
+    return promise.set_value(DialogParticipant{DialogId(user_id), user_id, c->date, c->status});
+  }
+
   auto chat_full = get_chat_full_force(chat_id, "get_chat_participant");
   if (chat_full == nullptr || (td_->auth_manager_->is_bot() && is_chat_full_outdated(chat_full, c, chat_id, true))) {
     auto query_promise = PromiseCreator::lambda(
diff --git a/td/telegram/DialogParticipantManager.cpp b/td/telegram/DialogParticipantManager.cpp
index 52679e144..3dc211abe 100644
--- a/td/telegram/DialogParticipantManager.cpp
+++ b/td/telegram/DialogParticipantManager.cpp
@@ -1611,6 +1611,15 @@ void DialogParticipantManager::get_channel_participant(ChannelId channel_id, Dia
     }
   }
 
+  if (td_->auth_manager_->is_bot() && participant_dialog_id == td_->dialog_manager_->get_my_dialog_id() &&
+      td_->chat_manager_->have_channel(channel_id)) {
+    // bots don't need inviter information
+    td_->chat_manager_->reload_channel(channel_id, Auto(), "get_channel_participant");
+    return promise.set_value(DialogParticipant{participant_dialog_id, participant_dialog_id.get_user_id(),
+                                               td_->chat_manager_->get_channel_date(channel_id),
+                                               td_->chat_manager_->get_channel_status(channel_id)});
+  }
+
   auto on_result_promise =
       PromiseCreator::lambda([actor_id = actor_id(this), channel_id, participant_dialog_id,
                               promise = std::move(promise)](Result<DialogParticipant> r_dialog_participant) mutable {