Added support of some backend limitations for giveaways.

Telegram/Resources/langs/lang.strings

@@ -2114,6 +2114,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_giveaway_maximum_countries_error#other" = "You can select maximum {count} countries.";
 "lng_giveaway_maximum_channels_error#one" = "You can select maximum {count} channel.";
 "lng_giveaway_maximum_channels_error#other" = "You can select maximum {count} channels.";
+"lng_giveaway_maximum_users_error#one" = "You can select maximum {count} user.";
+"lng_giveaway_maximum_users_error#other" = "You can select maximum {count} users.";
 "lng_giveaway_channels_confirm_title" = "Channel is Private";
 "lng_giveaway_channels_confirm_about" = "Are you sure you want to add a private channel? Users won't be able to join it without an invite link.";
 

Telegram/SourceFiles/api/api_premium.cpp

@@ -435,18 +435,38 @@ Data::SubscriptionOptions PremiumGiftCodeOptions::options(int amount) {
 	}
 }
 
-[[nodiscard]] int PremiumGiftCodeOptions::giveawayBoostsPerPremium() const {
+int PremiumGiftCodeOptions::giveawayBoostsPerPremium() const {
 	constexpr auto kFallbackCount = 4;
 	return _peer->session().account().appConfig().get<int>(
 		u"giveaway_boosts_per_premium"_q,
 		kFallbackCount);
 }
 
-[[nodiscard]] int PremiumGiftCodeOptions::giveawayCountriesMax() const {
+int PremiumGiftCodeOptions::giveawayCountriesMax() const {
 	constexpr auto kFallbackCount = 10;
 	return _peer->session().account().appConfig().get<int>(
 		u"giveaway_countries_max"_q,
 		kFallbackCount);
 }
 
+int PremiumGiftCodeOptions::giveawayAddPeersMax() const {
+	constexpr auto kFallbackCount = 10;
+	return _peer->session().account().appConfig().get<int>(
+		u"giveaway_add_peers_max"_q,
+		kFallbackCount);
+}
+
+int PremiumGiftCodeOptions::giveawayPeriodMax() const {
+	constexpr auto kFallbackCount = 3600 * 24 * 7;
+	return _peer->session().account().appConfig().get<int>(
+		u"giveaway_period_max"_q,
+		kFallbackCount);
+}
+
+bool PremiumGiftCodeOptions::giveawayGiftsPurchaseAvailable() const {
+	return _peer->session().account().appConfig().get<bool>(
+		u"giveaway_gifts_purchase_available"_q,
+		false);
+}
+
 } // namespace Api

Telegram/SourceFiles/api/api_premium.h

@@ -158,6 +158,9 @@ public:
 
 	[[nodiscard]] int giveawayBoostsPerPremium() const;
 	[[nodiscard]] int giveawayCountriesMax() const;
+	[[nodiscard]] int giveawayAddPeersMax() const;
+	[[nodiscard]] int giveawayPeriodMax() const;
+	[[nodiscard]] bool giveawayGiftsPurchaseAvailable() const;
 
 private:
 	struct Token final {

Telegram/SourceFiles/info/boosts/create_giveaway_box.cpp

@@ -51,6 +51,18 @@ namespace {
 	return dateNow;
 }
 
+[[nodiscard]] Fn<bool(int)> CreateErrorCallback(
+		int max,
+		tr::phrase<lngtag_count> phrase) {
+	return [=](int count) {
+		const auto error = (count >= max);
+		if (error) {
+			Ui::Toast::Show(phrase(tr::now, lt_count, max));
+		}
+		return error;
+	};
+}
+
 } // namespace
 
 void CreateGiveawayBox(
@@ -188,11 +200,16 @@ void CreateGiveawayBox(
 				}, peersBox->lifetime());
 			};
 
+			using Controller = Giveaway::AwardMembersListController;
+			auto listController = std::make_unique<Controller>(
+				controller,
+				peer);
+			listController->setCheckError(CreateErrorCallback(
+				state->apiOptions.giveawayAddPeersMax(),
+				tr::lng_giveaway_maximum_users_error));
 			box->uiShow()->showBox(
 				Box<PeerListBox>(
-					std::make_unique<Giveaway::AwardMembersListController>(
-						controller,
-						peer),
+					std::move(listController),
 					std::move(initBox)),
 				Ui::LayerOption::KeepOther);
 		});
@@ -349,13 +366,16 @@ void CreateGiveawayBox(
 				});
 			};
 
+			using Controller = Giveaway::MyChannelsListController;
+			auto controller = std::make_unique<Controller>(
+				peer,
+				box->uiShow(),
+				state->selectedToSubscribe);
+			controller->setCheckError(CreateErrorCallback(
+				state->apiOptions.giveawayAddPeersMax(),
+				tr::lng_giveaway_maximum_channels_error));
 			box->uiShow()->showBox(
-				Box<PeerListBox>(
-					std::make_unique<Giveaway::MyChannelsListController>(
-						peer,
-						box->uiShow(),
-						state->selectedToSubscribe),
-					std::move(initBox)),
+				Box<PeerListBox>(std::move(controller), std::move(initBox)),
 				Ui::LayerOption::KeepOther);
 		});
 
@@ -394,18 +414,9 @@ void CreateGiveawayBox(
 			auto done = [=](std::vector<QString> list) {
 				state->countriesValue = std::move(list);
 			};
-			auto error = [=](int count) {
-				const auto max = state->apiOptions.giveawayCountriesMax();
-				const auto error = (count >= max);
-				if (error) {
-					Ui::Toast::Show(tr::lng_giveaway_maximum_countries_error(
-						tr::now,
-						lt_count,
-						max));
-				}
-				return error;
-			};
-
+			auto error = CreateErrorCallback(
+				state->apiOptions.giveawayCountriesMax(),
+				tr::lng_giveaway_maximum_countries_error);
 			box->uiShow()->showBox(Box(
 				Ui::SelectCountriesBox,
 				state->countriesValue.current(),
@@ -469,7 +480,6 @@ void CreateGiveawayBox(
 			st::defaultSettingsButton);
 
 		button->setClickedCallback([=] {
-			constexpr auto kSevenDays = 3600 * 24 * 7;
 			box->uiShow()->showBox(Box([=](not_null<Ui::GenericBox*> b) {
 				Ui::ChooseDateTimeBox(b, {
 					.title = tr::lng_giveaway_date_select(),
@@ -482,7 +492,7 @@ void CreateGiveawayBox(
 					.time = state->dateValue.current(),
 					.max = [=] {
 						return QDateTime::currentSecsSinceEpoch()
-							+ kSevenDays;
+							+ state->apiOptions.giveawayPeriodMax();;
 					},
 				});
 			}));

Telegram/SourceFiles/info/boosts/giveaway/giveaway_list_controllers.cpp

@@ -112,7 +112,13 @@ AwardMembersListController::AwardMembersListController(
 }
 
 void AwardMembersListController::rowClicked(not_null<PeerListRow*> row) {
-	delegate()->peerListSetRowChecked(row, !row->checked());
+	const auto checked = !row->checked();
+	if (checked
+		&& _checkErrorCallback
+		&& _checkErrorCallback(delegate()->peerListSelectedRowsCount())) {
+		return;
+	}
+	delegate()->peerListSetRowChecked(row, checked);
 }
 
 std::unique_ptr<PeerListRow> AwardMembersListController::createRow(
@@ -130,6 +136,10 @@ base::unique_qptr<Ui::PopupMenu> AwardMembersListController::rowContextMenu(
 	return nullptr;
 }
 
+void AwardMembersListController::setCheckError(Fn<bool(int)> callback) {
+	_checkErrorCallback = std::move(callback);
+}
+
 MyChannelsListController::MyChannelsListController(
 	not_null<PeerData*> peer,
 	std::shared_ptr<Ui::Show> show,
@@ -160,6 +170,11 @@ std::unique_ptr<PeerListRow> MyChannelsListController::createRestoredRow(
 void MyChannelsListController::rowClicked(not_null<PeerListRow*> row) {
 	const auto channel = row->peer()->asChannel();
 	const auto checked = !row->checked();
+	if (checked
+		&& _checkErrorCallback
+		&& _checkErrorCallback(delegate()->peerListSelectedRowsCount())) {
+		return;
+	}
 	if (checked && channel && channel->username().isEmpty()) {
 		_show->showBox(Box(Ui::ConfirmBox, Ui::ConfirmBoxArgs{
 			.text = tr::lng_giveaway_channels_confirm_about(),
@@ -224,6 +239,10 @@ void MyChannelsListController::prepare() {
 	}).send();
 }
 
+void MyChannelsListController::setCheckError(Fn<bool(int)> callback) {
+	_checkErrorCallback = std::move(callback);
+}
+
 std::unique_ptr<PeerListRow> MyChannelsListController::createRow(
 		not_null<ChannelData*> channel) const {
 	if (channel->isMegagroup()) {

Telegram/SourceFiles/info/boosts/giveaway/giveaway_list_controllers.h

@@ -29,6 +29,8 @@ public:
 		not_null<Window::SessionNavigation*> navigation,
 		not_null<PeerData*> peer);
 
+	void setCheckError(Fn<bool(int)> callback);
+
 	void rowClicked(not_null<PeerListRow*> row) override;
 	std::unique_ptr<PeerListRow> createRow(
 		not_null<PeerData*> participant) const override;
@@ -36,6 +38,9 @@ public:
 		QWidget *parent,
 		not_null<PeerListRow*> row) override;
 
+private:
+	Fn<bool(int)> _checkErrorCallback;
+
 };
 
 class MyChannelsListController : public PeerListController {
@@ -45,6 +50,8 @@ public:
 		std::shared_ptr<Ui::Show> show,
 		std::vector<not_null<PeerData*>> selected);
 
+	void setCheckError(Fn<bool(int)> callback);
+
 	Main::Session &session() const override;
 	void prepare() override;
 	void rowClicked(not_null<PeerListRow*> row) override;
@@ -61,6 +68,8 @@ private:
 	const not_null<PeerData*> _peer;
 	const std::shared_ptr<Ui::Show> _show;
 
+	Fn<bool(int)> _checkErrorCallback;
+
 	std::vector<not_null<PeerData*>> _selected;
 
 	rpl::lifetime _apiLifetime;

Telegram/SourceFiles/info/boosts/info_boosts_inner_widget.cpp

@@ -7,6 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "info/boosts/info_boosts_inner_widget.h"
 
+#include "api/api_premium.h"
 #include "api/api_statistics.h"
 #include "boxes/peers/edit_peer_invite_link.h"
 #include "info/boosts/create_giveaway_box.h"
@@ -182,6 +183,10 @@ void FillGetBoostsButton(
 		not_null<Controller*> controller,
 		std::shared_ptr<Ui::Show> show,
 		not_null<PeerData*> peer) {
+	if (!Api::PremiumGiftCodeOptions(peer).giveawayGiftsPurchaseAvailable()) {
+		return;
+	}
+	::Settings::AddSkip(content);
 	const auto &st = st::getBoostsButton;
 	const auto &icon = st::getBoostsButtonIcon;
 	const auto button = content->add(
@@ -199,6 +204,8 @@ void FillGetBoostsButton(
 			st::infoSharedMediaButtonIconPosition.x(),
 			(st.height + rect::m::sum::v(st.padding) - icon.height()) / 2,
 		})->show();
+	::Settings::AddSkip(content);
+	::Settings::AddDividerText(content, tr::lng_boosts_get_boosts_subtext());
 }
 
 } // namespace
@@ -293,10 +300,7 @@ void InnerWidget::fill() {
 	::Settings::AddSkip(inner);
 	::Settings::AddDividerText(inner, tr::lng_boosts_link_subtext());
 
-	::Settings::AddSkip(inner);
 	FillGetBoostsButton(inner, _controller, _show, _peer);
-	::Settings::AddSkip(inner);
-	::Settings::AddDividerText(inner, tr::lng_boosts_get_boosts_subtext());
 
 	resizeToWidth(width());
 	crl::on_main([=]{ fakeShowed->fire({}); });