Added initial support for increased premium count of accounts.

Telegram/SourceFiles/main/main_domain.cpp

@@ -236,7 +236,7 @@ void Domain::scheduleUpdateUnreadBadge() {
 
 not_null<Main::Account*> Domain::add(MTP::Environment environment) {
 	Expects(started());
-	Expects(_accounts.size() < kMaxAccounts);
+	Expects(_accounts.size() < kPremiumMaxAccounts);
 
 	static const auto cloneConfig = [](const MTP::Config &config) {
 		return std::make_unique<MTP::Config>(config);
@@ -283,7 +283,7 @@ not_null<Main::Account*> Domain::add(MTP::Environment environment) {
 }
 
 void Domain::addActivated(MTP::Environment environment) {
-	if (accounts().size() < Main::Domain::kMaxAccounts) {
+	if (accounts().size() < maxAccounts()) {
 		activate(add(environment));
 	} else {
 		for (auto &[index, account] : accounts()) {
@@ -438,4 +438,12 @@ void Domain::scheduleWriteAccounts() {
 	});
 }
 
+int Domain::maxAccounts() const {
+	const auto isAnyPreimium = ranges::any_of(accounts(), [](
+			const Main::Domain::AccountWithIndex &d) {
+		return d.account->session().premium();
+	});
+	return isAnyPreimium ? kPremiumMaxAccounts : kMaxAccounts;
+}
+
 } // namespace Main

Telegram/SourceFiles/main/main_domain.h

@@ -31,6 +31,7 @@ public:
 	};
 
 	static constexpr auto kMaxAccounts = 3;
+	static constexpr auto kPremiumMaxAccounts = 4;
 
 	explicit Domain(const QString &dataName);
 	~Domain();
@@ -40,6 +41,8 @@ public:
 	void resetWithForgottenPasscode();
 	void finish();
 
+	[[nodiscard]] int maxAccounts() const;
+
 	[[nodiscard]] Storage::Domain &local() const {
 		return *_local;
 	}

Telegram/SourceFiles/settings/settings_common.cpp

@@ -326,7 +326,7 @@ void FillMenu(
 			&st::menuIconCancel);
 	} else {
 		const auto &list = Core::App().domain().accounts();
-		if (list.size() < ::Main::Domain::kMaxAccounts) {
+		if (list.size() < Core::App().domain().maxAccounts()) {
 			addAction(tr::lng_menu_add_account(tr::now), [=] {
 				Core::App().domain().addActivated(MTP::Environment{});
 			}, &st::menuIconAddAccount);

Telegram/SourceFiles/settings/settings_information.cpp

@@ -708,7 +708,13 @@ not_null<Ui::SlideWrap<Ui::SettingsButton>*> AccountsList::setupAdd() {
 
 	const auto add = [=](MTP::Environment environment) {
 		Core::App().preventOrInvoke([=] {
-			Core::App().domain().addActivated(environment);
+			auto &domain = _controller->session().domain();
+			if (domain.accounts().size() >= domain.maxAccounts()) {
+				_controller->show(
+					Box(AccountsLimitBox, &_controller->session()));
+			} else {
+				domain.addActivated(environment);
+			}
 		});
 	};
 
@@ -804,7 +810,7 @@ void AccountsList::rebuild() {
 	inner->resizeToWidth(_outer->width());
 
 	_addAccount->toggle(
-		(inner->count() < Main::Domain::kMaxAccounts),
+		(inner->count() < Main::Domain::kPremiumMaxAccounts),
 		anim::type::instant);
 
 	_reorder->start();

Telegram/SourceFiles/storage/storage_domain.cpp

@@ -160,7 +160,7 @@ Domain::StartModernResult Domain::startModern(
 	LOG(("App Info: reading encrypted info..."));
 	auto count = qint32();
 	info.stream >> count;
-	if (count <= 0 || count > Main::Domain::kMaxAccounts) {
+	if (count <= 0 || count > Main::Domain::kPremiumMaxAccounts) {
 		LOG(("App Error: bad accounts count: %1").arg(count));
 		return StartModernResult::Failed;
 	}
@@ -174,7 +174,7 @@ Domain::StartModernResult Domain::startModern(
 		auto index = qint32();
 		info.stream >> index;
 		if (index >= 0
-			&& index < Main::Domain::kMaxAccounts
+			&& index < Main::Domain::kPremiumMaxAccounts
 			&& tried.emplace(index).second) {
 			auto account = std::make_unique<Main::Account>(
 				_owner,