Added initial ability to reinvest existing credits for channels.

Telegram/Resources/langs/lang.strings

@@ -5229,6 +5229,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_bot_earn_balance_button#other" = "Withdraw {emoji} {count} via Fragment";
 "lng_bot_earn_balance_button_all" = "Withdraw all stars via Fragment";
 "lng_bot_earn_balance_button_locked" = "Withdraw via Fragment";
+"lng_bot_earn_balance_button_buy_ads" = "Buy Ads";
 "lng_bot_earn_learn_credits_out_about" = "You can withdraw Stars using Fragment, or use Stars to advertise your bot. {link}";
 "lng_bot_earn_out_ph" = "Enter amount to withdraw";
 "lng_bot_earn_balance_password_title" = "Two-step verification";

Telegram/SourceFiles/api/api_credits.cpp

@@ -237,27 +237,41 @@ rpl::producer<rpl::no_value, QString> CreditsEarnStatistics::request() {
 	return [=](auto consumer) {
 		auto lifetime = rpl::lifetime();
 
-		makeRequest(MTPpayments_GetStarsRevenueStats(
-			MTP_flags(0),
-			(_isUser ? user()->input : channel()->input)
-		)).done([=](const MTPpayments_StarsRevenueStats &result) {
-			const auto &data = result.data();
-			const auto &status = data.vstatus().data();
-			_data = Data::CreditsEarnStatistics{
-				.revenueGraph = StatisticalGraphFromTL(data.vrevenue_graph()),
-				.currentBalance = status.vcurrent_balance().v,
-				.availableBalance = status.vavailable_balance().v,
-				.overallRevenue = status.voverall_revenue().v,
-				.usdRate = data.vusd_rate().v,
-				.isWithdrawalEnabled = status.is_withdrawal_enabled(),
-				.nextWithdrawalAt = status.vnext_withdrawal_at()
-					? base::unixtime::parse(status.vnext_withdrawal_at()->v)
-					: QDateTime(),
-			};
+		const auto finish = [=](const QString &url) {
+			makeRequest(MTPpayments_GetStarsRevenueStats(
+				MTP_flags(0),
+				(_isUser ? user()->input : channel()->input)
+			)).done([=](const MTPpayments_StarsRevenueStats &result) {
+				const auto &data = result.data();
+				const auto &status = data.vstatus().data();
+				_data = Data::CreditsEarnStatistics{
+					.revenueGraph = StatisticalGraphFromTL(
+						data.vrevenue_graph()),
+					.currentBalance = status.vcurrent_balance().v,
+					.availableBalance = status.vavailable_balance().v,
+					.overallRevenue = status.voverall_revenue().v,
+					.usdRate = data.vusd_rate().v,
+					.isWithdrawalEnabled = status.is_withdrawal_enabled(),
+					.nextWithdrawalAt = status.vnext_withdrawal_at()
+						? base::unixtime::parse(
+							status.vnext_withdrawal_at()->v)
+						: QDateTime(),
+					.buyAdsUrl = url,
+				};
 
-			consumer.put_done();
+				consumer.put_done();
+			}).fail([=](const MTP::Error &error) {
+				consumer.put_error_copy(error.type());
+			}).send();
+		};
+
+		makeRequest(
+			MTPpayments_GetStarsRevenueAdsAccountUrl(
+				(_isUser ? user()->input : channel()->input))
+		).done([=](const MTPpayments_StarsRevenueAdsAccountUrl &result) {
+			finish(qs(result.data().vurl()));
 		}).fail([=](const MTP::Error &error) {
-			consumer.put_error_copy(error.type());
+			finish({});
 		}).send();
 
 		return lifetime;

Telegram/SourceFiles/data/data_bot_earn.h

@@ -26,6 +26,7 @@ struct CreditsEarnStatistics final {
 	float64 usdRate = 0.;
 	bool isWithdrawalEnabled = false;
 	QDateTime nextWithdrawalAt;
+	QString buyAdsUrl;
 };
 
 } // namespace Data

Telegram/SourceFiles/info/bot/earn/info_earn_inner_widget.cpp

@@ -234,6 +234,13 @@ void InnerWidget::fill() {
 			container,
 			_controller->parentController(),
 			_peer,
+			rpl::single(
+				data.buyAdsUrl
+			) | rpl::then(
+				_stateUpdated.events() | rpl::map([=] {
+					return _state.buyAdsUrl;
+				})
+			),
 			rpl::duplicate(availableBalanceValue),
 			rpl::duplicate(dateValue),
 			std::move(dateValue) | rpl::map([=](const QDateTime &dt) {

Telegram/SourceFiles/info/channel_statistics/earn/info_earn_inner_widget.cpp

@@ -935,6 +935,13 @@ void InnerWidget::fill() {
 			container,
 			_controller->parentController(),
 			_peer,
+			rpl::single(
+				creditsData.buyAdsUrl
+			) | rpl::then(
+				_stateUpdated.events() | rpl::map([=] {
+					return _state.creditsEarn.buyAdsUrl;
+				})
+			),
 			rpl::duplicate(availableBalanceValue),
 			rpl::duplicate(dateValue),
 			std::move(dateValue) | rpl::map([=](const QDateTime &dt) {

Telegram/SourceFiles/settings/settings_credits_graphics.cpp

@@ -15,6 +15,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "core/click_handler_types.h"
 #include "core/ui_integration.h"
 #include "data/data_file_origin.h"
+#include "core/click_handler_types.h" // UrlClickHandler
 #include "data/data_photo_media.h"
 #include "data/data_session.h"
 #include "data/data_user.h"
@@ -662,6 +663,7 @@ void AddWithdrawalWidget(
 		not_null<Ui::VerticalLayout*> container,
 		not_null<Window::SessionController*> controller,
 		not_null<PeerData*> peer,
+		rpl::producer<QString> secondButtonUrl,
 		rpl::producer<uint64> availableBalanceValue,
 		rpl::producer<QDateTime> dateValue,
 		rpl::producer<bool> lockedValue,
@@ -712,13 +714,42 @@ void AddWithdrawalWidget(
 	Ui::AddSkip(container);
 
 	const auto &stButton = st::defaultActiveButton;
-	const auto button = container->add(
-		object_ptr<Ui::RoundButton>(
-			container,
-			rpl::never<QString>(),
-			stButton),
+	const auto buttonsContainer = container->add(
+		Ui::CreateSkipWidget(container, stButton.height),
 		st::boxRowPadding);
 
+	const auto button = Ui::CreateChild<Ui::RoundButton>(
+		buttonsContainer,
+		rpl::never<QString>(),
+		stButton);
+
+	const auto buttonCredits = Ui::CreateChild<Ui::RoundButton>(
+		buttonsContainer,
+		tr::lng_bot_earn_balance_button_buy_ads(),
+		stButton);
+	buttonCredits->setTextTransform(
+		Ui::RoundButton::TextTransform::NoTransform);
+
+	Ui::ToggleChildrenVisibility(buttonsContainer, true);
+
+	rpl::combine(
+		std::move(secondButtonUrl),
+		buttonsContainer->sizeValue()
+	) | rpl::start_with_next([=](const QString &url, const QSize &size) {
+		if (url.isEmpty()) {
+			button->resize(size.width(), size.height());
+			buttonCredits->resize(0, 0);
+		} else {
+			const auto w = size.width() - st::boxRowPadding.left() / 2;
+			button->resize(w / 2, size.height());
+			buttonCredits->resize(w / 2, size.height());
+			buttonCredits->moveToRight(0, 0);
+			buttonCredits->setClickedCallback([=] {
+				UrlClickHandler::Open(url);
+			});
+		}
+	}, buttonsContainer->lifetime());
+
 	rpl::duplicate(
 		lockedValue
 	) | rpl::start_with_next([=](bool v) {

Telegram/SourceFiles/settings/settings_credits_graphics.h

@@ -43,6 +43,7 @@ void AddWithdrawalWidget(
 	not_null<Ui::VerticalLayout*> container,
 	not_null<Window::SessionController*> controller,
 	not_null<PeerData*> peer,
+	rpl::producer<QString> secondButtonUrl,
 	rpl::producer<uint64> availableBalanceValue,
 	rpl::producer<QDateTime> dateValue,
 	rpl::producer<bool> lockedValue,