John Preston
51 linhas
1.4 KiB
C++
51 linhas
1.4 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "api/api_premium_option.h"
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#include "ui/text/format_values.h"
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namespace Api {
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constexpr auto kDiscountDivider = 1.;
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Data::PremiumSubscriptionOption CreateSubscriptionOption(
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int months,
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float64 monthlyAmount,
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int64 amount,
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const QString ¤cy,
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const QString &botUrl) {
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const auto baselineAmount = monthlyAmount * months;
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const auto discount = [&] {
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const auto percent = 1. - float64(amount) / baselineAmount;
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return base::SafeRound(percent * 100. / kDiscountDivider)
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* kDiscountDivider;
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}();
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const auto hasDiscount = (discount > 0);
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return {
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.months = months,
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.duration = Ui::FormatTTL(months * 86400 * 31),
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.discount = hasDiscount
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? QString::fromUtf8("\xe2\x88\x92%1%").arg(discount)
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: QString(),
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.costPerMonth = Ui::FillAmountAndCurrency(
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int64(base::SafeRound(amount / float64(months))),
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currency),
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.costNoDiscount = hasDiscount
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? Ui::FillAmountAndCurrency(
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int64(base::SafeRound(baselineAmount)),
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currency)
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: QString(),
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.costPerYear = Ui::FillAmountAndCurrency(
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int64(base::SafeRound(amount / float64(months / 12.))),
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currency),
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.botUrl = botUrl,
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};
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}
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} // namespace Api
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