Show "Topic Author" fake admin rank.

Telegram/Resources/langs/lang.strings

@@ -1682,6 +1682,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_admin_badge" = "admin";
 "lng_owner_badge" = "owner";
 "lng_channel_badge" = "channel";
+"lng_topic_author_badge" = "Topic Author";
 "lng_fast_reply" = "Reply";
 "lng_cancel_edit_post_sure" = "Cancel editing?";
 "lng_cancel_edit_post_yes" = "Yes";

Telegram/SourceFiles/data/data_forum_topic.cpp

@@ -149,6 +149,7 @@ ForumTopic::ForumTopic(not_null<Forum*> forum, MsgId rootId)
 	rootId))
 , _rootId(rootId)
 , _lastKnownServerMessageId(rootId)
+, _creatorId(creating() ? forum->session().userPeerId() : 0)
 , _creationDate(creating() ? base::unixtime::now() : 0)
 , _flags(creating() ? Flag::My : Flag()) {
 	Thread::setMuted(owner().notifySettings().isMuted(this));
@@ -203,6 +204,10 @@ MsgId ForumTopic::rootId() const {
 	return _rootId;
 }
 
+PeerId ForumTopic::creatorId() const {
+	return _creatorId;
+}
+
 TimeId ForumTopic::creationDate() const {
 	return _creationDate;
 }
@@ -267,6 +272,7 @@ void ForumTopic::readTillEnd() {
 void ForumTopic::applyTopic(const MTPDforumTopic &data) {
 	Expects(_rootId == data.vid().v);
 
+	_creatorId = peerFromMTP(data.vfrom_id());
 	_creationDate = data.vdate().v;
 
 	applyTitle(qs(data.vtitle()));

Telegram/SourceFiles/data/data_forum_topic.h

@@ -60,6 +60,7 @@ public:
 	[[nodiscard]] not_null<Forum*> forum() const;
 	[[nodiscard]] rpl::producer<> destroyed() const;
 	[[nodiscard]] MsgId rootId() const;
+	[[nodiscard]] PeerId creatorId() const;
 	[[nodiscard]] TimeId creationDate() const;
 
 	[[nodiscard]] bool my() const;
@@ -172,8 +173,9 @@ private:
 	DocumentId _iconId = 0;
 	base::flat_set<QString> _titleWords;
 	base::flat_set<QChar> _titleFirstLetters;
-	int _titleVersion = 0;
+	PeerId _creatorId = 0;
 	TimeId _creationDate = 0;
+	int _titleVersion = 0;
 	int32 _colorId = 0;
 	Flags _flags;
 

Telegram/SourceFiles/history/admin_log/history_admin_log_inner.cpp

@@ -687,6 +687,10 @@ void InnerWidget::elementStartPremium(
 void InnerWidget::elementCancelPremium(not_null<const Element*> view) {
 }
 
+QString InnerWidget::elementAuthorRank(not_null<const Element*> view) {
+	return {};
+}
+
 void InnerWidget::saveState(not_null<SectionMemento*> memento) {
 	memento->setFilter(std::move(_filter));
 	memento->setAdmins(std::move(_admins));

Telegram/SourceFiles/history/admin_log/history_admin_log_inner.h

@@ -143,6 +143,8 @@ public:
 		HistoryView::Element *replacing) override;
 	void elementCancelPremium(
 		not_null<const HistoryView::Element*> view) override;
+	QString elementAuthorRank(
+		not_null<const HistoryView::Element*> view) override;
 
 	~InnerWidget();
 

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -275,6 +275,10 @@ public:
 		}
 	}
 
+	QString elementAuthorRank(not_null<const Element*> view) override {
+		return {};
+	}
+
 	not_null<HistoryView::ElementDelegate*> delegate() override {
 		return this;
 	}

Telegram/SourceFiles/history/view/history_view_element.cpp

@@ -225,6 +225,11 @@ void SimpleElementDelegate::elementCancelPremium(
 	not_null<const Element*> view) {
 }
 
+QString SimpleElementDelegate::elementAuthorRank(
+		not_null<const Element*> view) {
+	return {};
+}
+
 TextSelection UnshiftItemSelection(
 		TextSelection selection,
 		uint16 byLength) {

Telegram/SourceFiles/history/view/history_view_element.h

@@ -107,6 +107,7 @@ public:
 		not_null<const Element*> view,
 		Element *replacing) = 0;
 	virtual void elementCancelPremium(not_null<const Element*> view) = 0;
+	virtual QString elementAuthorRank(not_null<const Element*> view) = 0;
 
 	virtual ~ElementDelegate() {
 	}
@@ -168,6 +169,8 @@ public:
 		not_null<const Element*> view,
 		Element *replacing) override;
 	void elementCancelPremium(not_null<const Element*> view) override;
+	QString elementAuthorRank(not_null<const Element*> view) override;
+
 
 protected:
 	[[nodiscard]] not_null<Window::SessionController*> controller() const {

Telegram/SourceFiles/history/view/history_view_list_widget.cpp

@@ -1658,6 +1658,10 @@ void ListWidget::elementCancelPremium(not_null<const Element*> view) {
 	_emojiInteractions->cancelPremiumEffect(view);
 }
 
+QString ListWidget::elementAuthorRank(not_null<const Element*> view) {
+	return _delegate->listElementAuthorRank(view);
+}
+
 void ListWidget::saveState(not_null<ListMemento*> memento) {
 	memento->setAroundPosition(_aroundPosition);
 	auto state = countScrollState();

Telegram/SourceFiles/history/view/history_view_list_widget.h

@@ -139,6 +139,7 @@ public:
 	virtual void listPaintEmpty(
 		Painter &p,
 		const Ui::ChatPaintContext &context) = 0;
+	virtual QString listElementAuthorRank(not_null<const Element*> view) = 0;
 };
 
 struct SelectionData {
@@ -319,6 +320,7 @@ public:
 		not_null<const Element*> view,
 		Element *replacing) override;
 	void elementCancelPremium(not_null<const Element*> view) override;
+	QString elementAuthorRank(not_null<const Element*> view) override;
 
 	void setEmptyInfoWidget(base::unique_qptr<Ui::RpWidget> &&w);
 

Telegram/SourceFiles/history/view/history_view_message.cpp

@@ -329,7 +329,10 @@ not_null<HistoryMessage*> Message::message() const {
 
 void Message::refreshRightBadge() {
 	const auto text = [&] {
-		if (data()->isDiscussionPost()) {
+		const auto author = delegate()->elementAuthorRank(this);
+		if (!author.isEmpty()) {
+			return author;
+		} else if (data()->isDiscussionPost()) {
 			return (delegate()->elementContext() == Context::Replies)
 				? QString()
 				: tr::lng_channel_badge(tr::now);
@@ -345,8 +348,8 @@ void Message::refreshRightBadge() {
 			return QString();
 		}
 		const auto info = channel->mgInfo.get();
-		const auto i = channel->mgInfo->admins.find(peerToUser(user->id));
-		const auto custom = (i != channel->mgInfo->admins.end())
+		const auto i = info->admins.find(peerToUser(user->id));
+		const auto custom = (i != info->admins.end())
 			? i->second
 			: (info->creator == user)
 			? info->creatorRank
@@ -355,7 +358,7 @@ void Message::refreshRightBadge() {
 			? custom
 			: (info->creator == user)
 			? tr::lng_owner_badge(tr::now)
-			: (i != channel->mgInfo->admins.end())
+			: (i != info->admins.end())
 			? tr::lng_admin_badge(tr::now)
 			: QString();
 	}();

Telegram/SourceFiles/history/view/history_view_pinned_section.cpp

@@ -613,6 +613,10 @@ void PinnedWidget::listPaintEmpty(
 	const Ui::ChatPaintContext &context) {
 }
 
+QString PinnedWidget::listElementAuthorRank(not_null<const Element*> view) {
+	return {};
+}
+
 void PinnedWidget::confirmDeleteSelected() {
 	ConfirmDeleteSelectedItems(_inner);
 }

Telegram/SourceFiles/history/view/history_view_pinned_section.h

@@ -124,6 +124,7 @@ public:
 	void listPaintEmpty(
 		Painter &p,
 		const Ui::ChatPaintContext &context) override;
+	QString listElementAuthorRank(not_null<const Element*> view) override;
 
 	// CornerButtonsDelegate delegate.
 	void cornerButtonsShowAtPosition(

Telegram/SourceFiles/history/view/history_view_replies_section.cpp

@@ -2453,6 +2453,12 @@ void RepliesWidget::listPaintEmpty(
 	_emptyPainter->paint(p, context.st, width(), _scroll->height());
 }
 
+QString RepliesWidget::listElementAuthorRank(not_null<const Element*> view) {
+	return (_topic && view->data()->from()->id == _topic->creatorId())
+		? tr::lng_topic_author_badge(tr::now)
+		: QString();
+}
+
 void RepliesWidget::setupEmptyPainter() {
 	Expects(_topic != nullptr);
 

Telegram/SourceFiles/history/view/history_view_replies_section.h

@@ -165,6 +165,7 @@ public:
 	void listPaintEmpty(
 		Painter &p,
 		const Ui::ChatPaintContext &context) override;
+	QString listElementAuthorRank(not_null<const Element*> view) override;
 
 	// CornerButtonsDelegate delegate.
 	void cornerButtonsShowAtPosition(

Telegram/SourceFiles/history/view/history_view_scheduled_section.cpp

@@ -1288,6 +1288,11 @@ void ScheduledWidget::listPaintEmpty(
 	const Ui::ChatPaintContext &context) {
 }
 
+QString ScheduledWidget::listElementAuthorRank(
+		not_null<const Element*> view) {
+	return {};
+}
+
 void ScheduledWidget::confirmSendNowSelected() {
 	ConfirmSendNowSelectedItems(_inner);
 }

Telegram/SourceFiles/history/view/history_view_scheduled_section.h

@@ -147,6 +147,7 @@ public:
 	void listPaintEmpty(
 		Painter &p,
 		const Ui::ChatPaintContext &context) override;
+	QString listElementAuthorRank(not_null<const Element*> view) override;
 
 	// CornerButtonsDelegate delegate.
 	void cornerButtonsShowAtPosition(