Added api support to create invoice for credit gifts.

Telegram/SourceFiles/api/api_credits.cpp

@@ -134,7 +134,9 @@ rpl::producer<rpl::no_value, QString> CreditsTopupOptions::request() {
 	return [=](auto consumer) {
 		auto lifetime = rpl::lifetime();
 
-		const auto optionsFromTL = [](const auto &options) {
+		const auto giftBarePeerId = !_peer->isSelf() ? _peer->id.value : 0;
+
+		const auto optionsFromTL = [giftBarePeerId](const auto &options) {
 			return ranges::views::all(
 				options
 			) | ranges::views::transform([=](const auto &option) {
@@ -145,6 +147,7 @@ rpl::producer<rpl::no_value, QString> CreditsTopupOptions::request() {
 					.currency = qs(option.data().vcurrency()),
 					.amount = option.data().vamount().v,
 					.extended = option.data().is_extended(),
+					.giftBarePeerId = giftBarePeerId,
 				};
 			}) | ranges::to_vector;
 		};

Telegram/SourceFiles/data/data_credits.h

@@ -15,6 +15,7 @@ struct CreditTopupOption final {
 	QString currency;
 	uint64 amount = 0;
 	bool extended = false;
+	uint64 giftBarePeerId = 0;
 };
 
 using CreditTopupOptions = std::vector<CreditTopupOption>;

Telegram/SourceFiles/payments/payments_form.cpp

@@ -318,6 +318,16 @@ MTPInputInvoice Form::inputInvoice() const {
 	} else if (const auto slug = std::get_if<InvoiceSlug>(&_id.value)) {
 		return MTP_inputInvoiceSlug(MTP_string(slug->slug));
 	} else if (const auto credits = std::get_if<InvoiceCredits>(&_id.value)) {
+		if (const auto userId = peerToUser(credits->giftPeerId)) {
+			if (const auto user = _session->data().user(userId)) {
+				return MTP_inputInvoiceStars(
+					MTP_inputStorePaymentStarsGift(
+						user->inputUser,
+						MTP_long(credits->credits),
+						MTP_string(credits->currency),
+						MTP_long(credits->amount)));
+			}
+		}
 		return MTP_inputInvoiceStars(
 			MTP_inputStorePaymentStarsTopup(
 				MTP_long(credits->credits),

Telegram/SourceFiles/payments/payments_form.h

@@ -167,6 +167,7 @@ struct InvoiceCredits {
 	QString currency;
 	uint64 amount = 0;
 	bool extended = false;
+	PeerId giftPeerId = PeerId(0);
 };
 
 struct InvoiceId {

Telegram/SourceFiles/settings/settings_credits_graphics.cpp

@@ -314,6 +314,7 @@ void FillCreditOptions(
 					.currency = option.currency,
 					.amount = option.amount,
 					.extended = option.extended,
+					.giftPeerId = PeerId(option.giftBarePeerId),
 				};
 
 				const auto weak = Ui::MakeWeak(button);