Method update

Telegram/SourceFiles/boxes/star_gift_box.cpp:3631–3666

}

void UpgradePriceValue::update() {
	if (_all.empty() || _next.empty()) {
		_timer.cancel();
		return;
	}
	const auto now = base::unixtime::now();
	const auto i = ranges::upper_bound(
		_all,
		now,
		ranges::less(),
		&UpgradePrice::date);
	const auto j = ranges::upper_bound(
		_next,
		now,
		ranges::less(),
		&UpgradePrice::date);
	const auto full = (i == begin(_all)) ? i->stars : (i - 1)->stars;
	const auto part = (j == begin(_next)) ? j->stars : (j - 1)->stars;
	const auto fullDate = (i != end(_all)) ? i->date : TimeId();
	const auto partDate = (j != end(_next)) ? j->date : TimeId();
	_cost = std::min({ _cost.current(), part, full});
	if (int(end(_next) - j) < 3) {
		refresh();
	}

	const auto next = std::min({
		partDate ? partDate : TimeId(INT_MAX),
		fullDate ? fullDate : TimeId(INT_MAX),
	});
	if (next != TimeId(INT_MAX)) {
		_tillNext = next - now;
	} else {
		_tillNext = 0;
		_timer.cancel();
	}
}

void UpgradePriceValue::refresh() {
	if (_refreshing || _finished) {