Add class ForumTopic.

CMakeLists.txt

@@ -352,6 +352,7 @@ set(TDLIB_SOURCE
   td/telegram/files/FileUploader.cpp
   td/telegram/files/PartsManager.cpp
   td/telegram/files/ResourceManager.cpp
+  td/telegram/ForumTopic.cpp
   td/telegram/ForumTopicEditedData.cpp
   td/telegram/ForumTopicIcon.cpp
   td/telegram/ForumTopicInfo.cpp
@@ -583,6 +584,7 @@ set(TDLIB_SOURCE
   td/telegram/files/ResourceManager.h
   td/telegram/files/ResourceState.h
   td/telegram/FolderId.h
+  td/telegram/ForumTopic.h
   td/telegram/ForumTopicEditedData.h
   td/telegram/ForumTopicIcon.h
   td/telegram/ForumTopicInfo.h

td/generate/scheme/td_api.tl

@@ -1316,7 +1316,7 @@ forumTopicEditedData title:string edit_icon_custom_emoji_id:Bool icon_custom_emo
 forumTopicIcon color:int32 custom_emoji_id:int64 = ForumTopicIcon;
 
 //@description Contains basic information about a forum topic
-//@message_thread_id Thread identifier of the topic
+//@message_thread_id Message thread identifier of the topic
 //@title Title of the topic
 //@icon Icon of the topic
 //@creation_date Date the topic was created
@@ -1325,6 +1325,19 @@ forumTopicIcon color:int32 custom_emoji_id:int64 = ForumTopicIcon;
 //@is_closed True, if the topic is closed
 forumTopicInfo message_thread_id:int53 title:string icon:forumTopicIcon creation_date:int32 creator_id:MessageSender is_outgoing:Bool is_closed:Bool = ForumTopicInfo;
 
+//@description Describes a forum topic
+//@info Basic information about the topic
+//@last_message Last message in the topic; may be null
+//@is_pinned True, if the topic is pinned in the topic list
+//@unread_count Number of unread messages in the topic
+//@last_read_inbox_message_id Identifier of the last read incoming message
+//@last_read_outbox_message_id Identifier of the last read outgoing message
+//@unread_mention_count Number of unread messages with a mention/reply in the topic
+//@unread_reaction_count Number of messages with unread reactions in the topic
+//@notification_settings Notification settings for the topic
+//@draft_message A draft of a message in the topic; may be null
+forumTopic info:forumTopicInfo last_message:message is_pinned:Bool unread_count:int32 last_read_inbox_message_id:int53 last_read_outbox_message_id:int53 unread_mention_count:int32 unread_reaction_count:int32 notification_settings:chatNotificationSettings draft_message:draftMessage = ForumTopic;
+
 
 //@class RichText @description Describes a text object inside an instant-view web page
 

td/telegram/ForumTopic.cpp

@@ -0,0 +1,51 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#include "td/telegram/ForumTopic.h"
+
+#include "td/telegram/DraftMessage.h"
+#include "td/telegram/Td.h"
+
+#include "td/utils/logging.h"
+
+namespace td {
+
+ForumTopic::ForumTopic(Td *td, tl_object_ptr<telegram_api::ForumTopic> &&forum_topic_ptr) {
+  CHECK(forum_topic_ptr != nullptr);
+  if (forum_topic_ptr->get_id() != telegram_api::forumTopic::ID) {
+    LOG(INFO) << "Receive " << to_string(forum_topic_ptr);
+    return;
+  }
+  info_ = ForumTopicInfo(forum_topic_ptr);
+  auto *forum_topic = static_cast<telegram_api::forumTopic *>(forum_topic_ptr.get());
+
+  last_message_id_ = MessageId(ServerMessageId(forum_topic->top_message_));
+  is_pinned_ = forum_topic->pinned_;
+  unread_count_ = forum_topic->unread_count_;
+  last_read_inbox_message_id_ = MessageId(ServerMessageId(forum_topic->read_inbox_max_id_));
+  last_read_outbox_message_id_ = MessageId(ServerMessageId(forum_topic->read_outbox_max_id_));
+  unread_mention_count_ = forum_topic->unread_mentions_count_;
+  unread_reaction_count_ = forum_topic->unread_reactions_count_;
+  notification_settings_ =
+      get_dialog_notification_settings(std::move(forum_topic->notify_settings_), false, false, false, false);
+  draft_message_ = get_draft_message(td->contacts_manager_.get(), std::move(forum_topic->draft_));
+}
+
+td_api::object_ptr<td_api::forumTopic> ForumTopic::get_forum_topic_object(Td *td) const {
+  if (is_empty()) {
+    return nullptr;
+  }
+
+  // TODO draft_message = can_send_message(dialog_id, info_.get_thread_id()).is_ok() ? ... : nullptr;
+  // TODO last_message
+  auto draft_message = get_draft_message_object(draft_message_);
+  return td_api::make_object<td_api::forumTopic>(
+      info_.get_forum_topic_info_object(td), nullptr, is_pinned_, unread_count_, last_read_inbox_message_id_.get(),
+      last_read_outbox_message_id_.get(), unread_mention_count_, unread_reaction_count_,
+      get_chat_notification_settings_object(&notification_settings_), std::move(draft_message));
+}
+
+}  // namespace td

td/telegram/ForumTopic.h

@@ -0,0 +1,50 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#pragma once
+
+#include "td/telegram/DialogNotificationSettings.h"
+#include "td/telegram/ForumTopicInfo.h"
+#include "td/telegram/MessageId.h"
+#include "td/telegram/td_api.h"
+#include "td/telegram/telegram_api.h"
+
+#include "td/utils/common.h"
+
+namespace td {
+
+class DraftMessage;
+class Td;
+
+class ForumTopic {
+  ForumTopicInfo info_;
+  MessageId last_message_id_;
+  bool is_pinned_ = false;
+  int32 unread_count_ = 0;
+  MessageId last_read_inbox_message_id_;
+  MessageId last_read_outbox_message_id_;
+  int32 unread_mention_count_ = 0;
+  int32 unread_reaction_count_ = 0;
+  DialogNotificationSettings notification_settings_;
+  unique_ptr<DraftMessage> draft_message_;
+
+ public:
+  ForumTopic() = default;
+
+  ForumTopic(Td *td, tl_object_ptr<telegram_api::ForumTopic> &&forum_topic_ptr);
+
+  bool is_empty() const {
+    return info_.is_empty();
+  }
+
+  MessageId get_thread_id() const {
+    return info_.get_thread_id();
+  }
+
+  td_api::object_ptr<td_api::forumTopic> get_forum_topic_object(Td *td) const;
+};
+
+}  // namespace td

td/telegram/ForumTopicInfo.cpp

@@ -19,7 +19,7 @@ ForumTopicInfo::ForumTopicInfo(const tl_object_ptr<telegram_api::ForumTopic> &fo
     LOG(ERROR) << "Receive " << to_string(forum_topic_ptr);
     return;
   }
-  const telegram_api::forumTopic *forum_topic = static_cast<const telegram_api::forumTopic *>(forum_topic_ptr.get());
+  const auto *forum_topic = static_cast<const telegram_api::forumTopic *>(forum_topic_ptr.get());
 
   top_thread_message_id_ = MessageId(ServerMessageId(forum_topic->id_));
   title_ = forum_topic->title_;

td/telegram/ForumTopicInfo.h

@@ -39,6 +39,10 @@ class ForumTopicInfo {
     return !top_thread_message_id_.is_valid();
   }
 
+  MessageId get_thread_id() const {
+    return top_thread_message_id_;
+  }
+
   td_api::object_ptr<td_api::forumTopicInfo> get_forum_topic_info_object(Td *td) const;
 };