Show "N left" badge on limited gifts.

Telegram/Resources/langs/lang.strings

@@ -3589,6 +3589,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_gift_stars_resale" = "resale";
 "lng_gift_stars_on_sale" = "on sale";
 "lng_gift_stars_premium" = "premium";
+"lng_gift_stars_your_left#one" = "{count} left";
+"lng_gift_stars_your_left#other" = "{count} left";
+"lng_gift_stars_your_finished" = "none left";
 "lng_gift_stars_tabs_all" = "All Gifts";
 "lng_gift_stars_tabs_my" = "My Gifts";
 "lng_gift_stars_tabs_limited" = "Limited";

Telegram/SourceFiles/boxes/star_gift_box.cpp

@@ -2738,6 +2738,10 @@ void SendGiftBox(
 	auto result = object_ptr<WidgetWithRange>((QWidget*)nullptr);
 	const auto raw = result.data();
 
+	Data::AmPremiumValue(&window->session()) | rpl::start_with_next([=] {
+		raw->update();
+	}, raw->lifetime());
+
 	struct State {
 		Delegate delegate;
 		std::vector<int> order;
@@ -2816,9 +2820,7 @@ void SendGiftBox(
 				}
 			}
 			if (!button) {
-				button = std::make_unique<GiftButton>(
-					raw,
-					&state->delegate);
+				button = std::make_unique<GiftButton>(raw, &state->delegate);
 			}
 			const auto raw = button.get();
 			if (validated[index]) {

Telegram/SourceFiles/info/peer_gifts/info_peer_gifts_common.cpp

@@ -634,6 +634,14 @@ void GiftButton::paintEvent(QPaintEvent *e) {
 				&& !unique
 				&& !data.userpic
 				&& !data.info.limitedLeft;
+			const auto yourLeft = data.info.perUserTotal
+				? (data.info.perUserRemains
+					? tr::lng_gift_stars_your_left(
+						tr::now,
+						lt_count,
+						data.info.perUserRemains)
+					: tr::lng_gift_stars_your_finished(tr::now))
+				: QString();
 			return GiftBadge{
 				.text = (onsale
 					? tr::lng_gift_stars_on_sale(tr::now)
@@ -646,9 +654,13 @@ void GiftButton::paintEvent(QPaintEvent *e) {
 					: (!data.userpic
 						&& !data.info.unique
 						&& data.info.requirePremium)
-					? tr::lng_gift_stars_premium(tr::now)
+					? ((yourLeft.isEmpty() || !_delegate->amPremium())
+						? tr::lng_gift_stars_premium(tr::now)
+						: yourLeft)
 					: (!data.userpic && !data.info.unique)
-					? tr::lng_gift_stars_limited(tr::now)
+					? (yourLeft.isEmpty()
+						? tr::lng_gift_stars_limited(tr::now)
+						: yourLeft)
 					: (count == 1)
 					? tr::lng_gift_limited_of_one(tr::now)
 					: tr::lng_gift_limited_of_count(
@@ -944,6 +956,10 @@ QImage Delegate::cachedBadge(const GiftBadge &badge) {
 	return image;
 }
 
+bool Delegate::amPremium() {
+	return _session->premium();
+}
+
 DocumentData *LookupGiftSticker(
 		not_null<Main::Session*> session,
 		const GiftDescriptor &descriptor) {

Telegram/SourceFiles/info/peer_gifts/info_peer_gifts_common.h

@@ -147,6 +147,7 @@ public:
 		const GiftDescriptor &descriptor) = 0;
 	[[nodiscard]] virtual not_null<StickerPremiumMark*> hiddenMark() = 0;
 	[[nodiscard]] virtual QImage cachedBadge(const GiftBadge &badge) = 0;
+	[[nodiscard]] virtual bool amPremium() = 0;
 };
 
 class GiftButton final : public Ui::AbstractButton {
@@ -244,6 +245,7 @@ public:
 		const GiftDescriptor &descriptor) override;
 	not_null<StickerPremiumMark*> hiddenMark() override;
 	QImage cachedBadge(const GiftBadge &badge) override;
+	bool amPremium() override;
 
 private:
 	const not_null<Main::Session*> _session;