Check if bot supports Telegram Business.

Telegram/Resources/langs/lang.strings

@@ -2316,6 +2316,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_chatbots_reply_about" = "The bot will be able to view all new incoming messages, but not the messages that had been sent before you added the bot.";
 "lng_chatbots_remove" = "Remove Bot";
 "lng_chatbots_not_found" = "Chatbot not found.";
+"lng_chatbots_not_supported" = "This bot doesn't support Telegram Business yet.";
 "lng_chatbots_add" = "Add";
 "lng_chatbots_info_url" = "https://telegram.org/privacy";
 "lng_chatbot_status_can_reply" = "bot manages this chat";

Telegram/SourceFiles/data/data_session.cpp

@@ -722,6 +722,7 @@ not_null<UserData*> Session::processUser(const MTPUser &data) {
 					result->botInfo->inlinePlaceholder = QString();
 				}
 				result->botInfo->supportsAttachMenu = data.is_bot_attach_menu();
+				result->botInfo->supportsBusiness = data.is_bot_business();
 				result->botInfo->canEditInformation = data.is_bot_can_edit();
 			} else {
 				result->setBotInfoVersion(-1);

Telegram/SourceFiles/data/data_user.h

@@ -22,13 +22,6 @@ struct BusinessDetails;
 struct BotInfo {
 	BotInfo();
 
-	bool inited = false;
-	bool readsAllHistory = false;
-	bool cantJoinGroups = false;
-	bool supportsAttachMenu = false;
-	bool canEditInformation = false;
-	int version = 0;
-	int descriptionVersion = 0;
 	QString description;
 	QString inlinePlaceholder;
 	std::vector<Data::BotCommand> commands;
@@ -44,6 +37,15 @@ struct BotInfo {
 
 	ChatAdminRights groupAdminRights;
 	ChatAdminRights channelAdminRights;
+
+	int version = 0;
+	int descriptionVersion = 0;
+	bool inited : 1 = false;
+	bool readsAllHistory : 1 = false;
+	bool cantJoinGroups : 1 = false;
+	bool supportsAttachMenu : 1 = false;
+	bool canEditInformation : 1 = false;
+	bool supportsBusiness : 1 = false;
 };
 
 enum class UserDataFlag : uint32 {

Telegram/SourceFiles/settings/business/settings_chatbots.cpp

@@ -38,6 +38,7 @@ constexpr auto kDebounceTimeout = crl::time(400);
 enum class LookupState {
 	Empty,
 	Loading,
+	Unsupported,
 	Ready,
 };
 
@@ -247,9 +248,14 @@ Main::Session &PreviewController::session() const {
 			return rpl::single(BotState());
 		} else if (const auto peer = owner->peerByUsername(extracted)) {
 			if (const auto user = peer->asUser(); user && user->isBot()) {
+				if (user->botInfo->supportsBusiness) {
+					return rpl::single(BotState{
+						.bot = user,
+						.state = LookupState::Ready,
+					});
+				}
 				return rpl::single(BotState{
-					.bot = user,
+					.state = LookupState::Unsupported,
-					.state = LookupState::Ready,
 				});
 			}
 			return rpl::single(BotState{
@@ -314,7 +320,10 @@ Main::Session &PreviewController::session() const {
 	std::move(state) | rpl::filter([=](BotState state) {
 		return state.state != LookupState::Loading;
 	}) | rpl::start_with_next([=](BotState state) {
-		raw->toggle(state.state == LookupState::Ready, anim::type::normal);
+		raw->toggle(
+			(state.state == LookupState::Ready
+				|| state.state == LookupState::Unsupported),
+			anim::type::normal);
 		if (state.bot) {
 			const auto delegate = parent->lifetime().make_state<
 				PeerListContentDelegateSimple
@@ -330,11 +339,14 @@ Main::Session &PreviewController::session() const {
 			controller->setDelegate(delegate);
 			delete base::take(*child);
 			*child = content;
-		} else if (state.state == LookupState::Ready) {
+		} else if (state.state == LookupState::Ready
+			|| state.state == LookupState::Unsupported) {
 			const auto content = Ui::CreateChild<Ui::RpWidget>(inner);
 			const auto label = Ui::CreateChild<Ui::FlatLabel>(
 				content,
-				tr::lng_chatbots_not_found(),
+				(state.state == LookupState::Unsupported
+					? tr::lng_chatbots_not_supported()
+					: tr::lng_chatbots_not_found()),
 				st::settingsChatbotsNotFound);
 			content->resize(
 				inner->width(),
@@ -483,6 +495,8 @@ void Chatbots::save() {
 	const auto fail = [=](QString error) {
 		if (error == u"BUSINESS_RECIPIENTS_EMPTY"_q) {
 			show->showToast(tr::lng_greeting_recipients_empty(tr::now));
+		} else if (error == u"BOT_BUSINESS_MISSING"_q) {
+			show->showToast(tr::lng_chatbots_not_supported(tr::now));
 		}
 	};
 	controller()->session().data().chatbots().save({