Support bots as top promoted dialog entries.

Telegram/Resources/langs/lang.strings

@@ -601,7 +601,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_proxy_sponsor_about" = "This channel is shown by your proxy server.\nTo remove this channel from your chats list,\ndisable the proxy in Telegram Settings.";
 "lng_proxy_sponsor_warning" = "This proxy may display a sponsored channel in your chat list. This doesn't reveal any of your Telegram traffic.";
 "lng_badge_psa_default" = "PSA";
-"lng_about_psa_default" = "This channel provides you with a public service announcement.\nTo remove this channel from your chats list,\nright click it and select 'Hide'.";
+"lng_about_psa_default" = "This message provides you with a public service announcement. To remove it from your chats list, right click it and select **Hide**.";
 
 "lng_settings_blocked_users" = "Blocked users";
 "lng_settings_no_blocked_users" = "None";

Telegram/SourceFiles/data/data_session.cpp

@@ -3732,12 +3732,12 @@ void Session::setTopPromoted(
 			history->requestChatListMessage();
 			Notify::peerUpdatedDelayed(
 				_topPromoted,
-				Notify::PeerUpdate::Flag::ChannelPromotedChanged);
+				Notify::PeerUpdate::Flag::TopPromotedChanged);
 		}
 		if (changed && old) {
 			Notify::peerUpdatedDelayed(
 				old,
-				Notify::PeerUpdate::Flag::ChannelPromotedChanged);
+				Notify::PeerUpdate::Flag::TopPromotedChanged);
 		}
 	}
 }

Telegram/SourceFiles/history/history.cpp

@@ -2585,6 +2585,8 @@ bool History::useTopPromotion() const {
 		return false;
 	} else if (const auto channel = peer->asChannel()) {
 		return !isPinnedDialog(FilterId()) && !channel->amIn();
+	} else if (const auto user = peer->asUser()) {
+		return !isPinnedDialog(FilterId()) && user->isBot();
 	}
 	return false;
 }
@@ -2615,6 +2617,10 @@ bool History::shouldBeInChatList() const {
 		return chat->amIn()
 			|| !lastMessageKnown()
 			|| (lastMessage() != nullptr);
+	} else if (const auto user = peer->asUser()) {
+		if (user->isBot() && isTopPromoted()) {
+			return true;
+		}
 	}
 	return !lastMessageKnown()
 		|| (lastMessage() != nullptr);

Telegram/SourceFiles/history/history_widget.cpp

@@ -520,13 +520,13 @@ HistoryWidget::HistoryWidget(
 		| UpdateFlag::MigrationChanged
 		| UpdateFlag::UnavailableReasonChanged
 		| UpdateFlag::PinnedMessageChanged
+		| UpdateFlag::TopPromotedChanged
 		| UpdateFlag::UserIsBlocked
 		| UpdateFlag::AdminsChanged
 		| UpdateFlag::MembersChanged
 		| UpdateFlag::UserOnlineChanged
 		| UpdateFlag::NotificationsEnabled
 		| UpdateFlag::ChannelAmIn
-		| UpdateFlag::ChannelPromotedChanged
 		| UpdateFlag::ChannelLinkedChat
 		| UpdateFlag::ChannelSlowmode
 		| UpdateFlag::ChannelLocalMessages;
@@ -564,7 +564,7 @@ HistoryWidget::HistoryWidget(
 					this->update();
 				}
 			}
-			if (update.flags & UpdateFlag::ChannelPromotedChanged) {
+			if (update.flags & UpdateFlag::TopPromotedChanged) {
 				refreshAboutTopPromotion();
 				updateHistoryGeometry();
 				updateControlsVisibility();
@@ -5210,10 +5210,6 @@ void HistoryWidget::updateHistoryGeometry(
 	}
 	if (!editingMessage() && (isBlocked() || isBotStart() || isJoinChannel() || isMuteUnmute())) {
 		newScrollHeight -= _unblock->height();
-		if (_aboutTopPromotion) {
-			_aboutTopPromotion->resizeToWidth(width());
-			newScrollHeight -= _aboutTopPromotion->height();
-		}
 	} else {
 		if (editingMessage() || _canSendMessages) {
 			newScrollHeight -= (_field->height() + 2 * st::historySendPadding);
@@ -5227,6 +5223,10 @@ void HistoryWidget::updateHistoryGeometry(
 			newScrollHeight -= _kbScroll->height();
 		}
 	}
+	if (_aboutTopPromotion) {
+		_aboutTopPromotion->resizeToWidth(width());
+		newScrollHeight -= _aboutTopPromotion->height();
+	}
 	if (newScrollHeight <= 0) {
 		return;
 	}

Telegram/SourceFiles/observer_peer.h

@@ -39,36 +39,37 @@ struct PeerUpdate {
 		UnavailableReasonChanged  = (1 << 8),
 		UnreadViewChanged         = (1 << 9),
 		PinnedMessageChanged      = (1 << 10),
+		TopPromotedChanged        = (1 << 11),
 
 		// For chats and channels
-		InviteLinkChanged         = (1 << 11),
-		MembersChanged            = (1 << 12),
-		AdminsChanged             = (1 << 13),
-		BannedUsersChanged        = (1 << 14),
-		UnreadMentionsChanged     = (1 << 15),
-		RightsChanged             = (1 << 16),
+		InviteLinkChanged         = (1 << 12),
+		MembersChanged            = (1 << 13),
+		AdminsChanged             = (1 << 14),
+		BannedUsersChanged        = (1 << 15),
+		UnreadMentionsChanged     = (1 << 16),
+		RightsChanged             = (1 << 17),
 
 		// For users
-		UserCanShareContact       = (1 << 17),
-		UserIsContact             = (1 << 18),
-		UserPhoneChanged          = (1 << 19),
-		UserIsBlocked             = (1 << 20),
-		BotCommandsChanged        = (1 << 21),
-		UserOnlineChanged         = (1 << 22),
-		BotCanAddToGroups         = (1 << 23),
-		UserCommonChatsChanged    = (1 << 24),
-		UserHasCalls              = (1 << 25),
-		UserOccupiedChanged       = (1 << 26),
-		UserSupportInfoChanged    = (1 << 27),
+		UserCanShareContact       = (1 << 18),
+		UserIsContact             = (1 << 19),
+		UserPhoneChanged          = (1 << 20),
+		UserIsBlocked             = (1 << 21),
+		BotCommandsChanged        = (1 << 22),
+		UserOnlineChanged         = (1 << 23),
+		BotCanAddToGroups         = (1 << 24),
+		UserCommonChatsChanged    = (1 << 25),
+		UserHasCalls              = (1 << 26),
+		UserOccupiedChanged       = (1 << 27),
+		UserSupportInfoChanged    = (1 << 28),
 
 		// For channels
-		ChannelAmIn               = (1 << 17),
-		ChannelStickersChanged    = (1 << 18),
-		ChannelPromotedChanged    = (1 << 19),
-		ChannelLinkedChat         = (1 << 20),
-		ChannelLocation           = (1 << 21),
-		ChannelSlowmode           = (1 << 22),
-		ChannelLocalMessages      = (1 << 23),
+		ChannelAmIn               = (1 << 18),
+		ChannelStickersChanged    = (1 << 19),
+		ChannelPromotedChanged    = (1 << 20),
+		ChannelLinkedChat         = (1 << 21),
+		ChannelLocation           = (1 << 22),
+		ChannelSlowmode           = (1 << 23),
+		ChannelLocalMessages      = (1 << 24),
 	};
 	using Flags = base::flags<Flag>;
 	friend inline constexpr auto is_flag_type(Flag) { return true; }