Revision control
++ // Copyright (C) 2021 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "subscription.h"
++ #include "user.h"
++
++ Subscription::Subscription(User *user) : m_user(user)
++ {
++ Q_ASSERT(user);
++ }
++
++ //! [calculate-price]
++
++ void Subscription::calculatePrice()
++ {
++ const auto oldPrice = m_price;
++
++ m_price = qRound(calculateDiscount() * int(m_duration) * basePrice());
++ if (m_price != oldPrice)
++ emit priceChanged();
++ }
++
++ //! [calculate-price]
++
++ //! [set-duration]
++
++ void Subscription::setDuration(Duration newDuration)
++ {
++ if (newDuration != m_duration) {
++ m_duration = newDuration;
++ calculatePrice();
++ emit durationChanged();
++ }
++ }
++
++ //! [set-duration]
++
++ //! [calculate-discount]
++
++ double Subscription::calculateDiscount() const
++ {
++ switch (m_duration) {
++ case Monthly:
++ return 1;
++ case Quarterly:
++ return 0.9;
++ case Yearly:
++ return 0.6;
++ }
++ Q_ASSERT(false);
++ return -1;
++ }
++
++ //! [calculate-discount]
++
++ //! [calculate-base-price]
++
++ int Subscription::basePrice() const
++ {
++ if (m_user->country() == User::Country::AnyTerritory)
++ return 0;
++
++ return (m_user->country() == User::Country::Norway) ? 100 : 80;
++ }
++
++ //! [calculate-base-price]
++
++ //! [update-validity]
++
++ void Subscription::updateValidity()
++ {
++ bool isValid = m_isValid;
++ m_isValid = m_user->country() != User::Country::AnyTerritory && m_user->age() > 12;
++
++ if (m_isValid != isValid)
++ emit isValidChanged();
++ }
++
++ //! [update-validity]