File indexing completed on 2024-05-05 17:33:22

 /*
  *   SPDX-FileCopyrightText: 2012 Aleix Pol Gonzalez <aleixpol@blue-systems.com>
  *
  *   SPDX-License-Identifier: LGPL-2.0-or-later
  */
 
 #include "ResourcesModel.h"
 #include "libdiscover_debug.h"
 #include "utils.h"
 #include <KLocalizedString>
 #include <QIcon>
 #include <Transaction/Transaction.h>
 #include <Transaction/TransactionModel.h>
 #include <resources/AbstractResource.h>
 #include <resources/AbstractResourcesBackend.h>
 #include <resources/StandardBackendUpdater.h>
 
 StandardBackendUpdater::StandardBackendUpdater(AbstractResourcesBackend *parent)
     : AbstractBackendUpdater(parent)
     , m_backend(parent)
     , m_settingUp(false)
     , m_progress(0)
     , m_lastUpdate(QDateTime())
 {
     connect(m_backend, &AbstractResourcesBackend::fetchingChanged, this, &StandardBackendUpdater::refreshUpdateable);
     connect(m_backend, &AbstractResourcesBackend::resourcesChanged, this, &StandardBackendUpdater::resourcesChanged);
     connect(m_backend, &AbstractResourcesBackend::resourceRemoved, this, [this](AbstractResource *resource) {
         if (m_upgradeable.remove(resource)) {
             Q_EMIT updatesCountChanged(updatesCount());
         }
         m_toUpgrade.remove(resource);
     });
     connect(TransactionModel::global(), &TransactionModel::transactionRemoved, this, &StandardBackendUpdater::transactionRemoved);
     connect(TransactionModel::global(), &TransactionModel::transactionAdded, this, &StandardBackendUpdater::transactionAdded);
 
     m_timer.setSingleShot(true);
     m_timer.setInterval(10);
     connect(&m_timer, &QTimer::timeout, this, &StandardBackendUpdater::refreshUpdateable);
 }
 
 void StandardBackendUpdater::resourcesChanged(AbstractResource *res, const QVector<QByteArray> &props)
 {
     if (props.contains("state") && (res->state() == AbstractResource::Upgradeable || m_upgradeable.contains(res)))
         m_timer.start();
 }
 
 bool StandardBackendUpdater::hasUpdates() const
 {
     return !m_upgradeable.isEmpty();
 }
 
 void StandardBackendUpdater::start()
 {
     m_settingUp = true;
     Q_EMIT progressingChanged(true);
     setProgress(0);
     auto upgradeList = m_toUpgrade.values();
     std::sort(upgradeList.begin(), upgradeList.end(), [](const AbstractResource *a, const AbstractResource *b) {
         return a->name() < b->name();
     });
 
     const bool couldCancel = m_canCancel;
     for (AbstractResource *res : qAsConst(upgradeList)) {
         m_pendingResources += res;
         auto t = m_backend->installApplication(res);
         t->setVisible(false);
         t->setProperty("updater", QVariant::fromValue<QObject *>(this));
         connect(t, &Transaction::downloadSpeedChanged, this, [this]() {
             Q_EMIT downloadSpeedChanged(downloadSpeed());
         });
         connect(this, &StandardBackendUpdater::cancelTransaction, t, &Transaction::cancel);
         TransactionModel::global()->addTransaction(t);
         m_canCancel |= t->isCancellable();
     }
     if (m_canCancel != couldCancel) {
         Q_EMIT cancelableChanged(m_canCancel);
     }
     m_settingUp = false;
 
     if (m_pendingResources.isEmpty()) {
         cleanup();
     } else {
         setProgress(1);
     }
 }
 
 void StandardBackendUpdater::cancel()
 {
     Q_EMIT cancelTransaction();
 }
 
 void StandardBackendUpdater::transactionAdded(Transaction *newTransaction)
 {
     if (!m_pendingResources.contains(newTransaction->resource()))
         return;
 
     connect(newTransaction, &Transaction::progressChanged, this, &StandardBackendUpdater::transactionProgressChanged);
     connect(newTransaction, &Transaction::statusChanged, this, &StandardBackendUpdater::transactionProgressChanged);
 }
 
 AbstractBackendUpdater::State toUpdateState(Transaction *t)
 {
     switch (t->status()) {
     case Transaction::SetupStatus:
     case Transaction::QueuedStatus:
         return AbstractBackendUpdater::None;
     case Transaction::DownloadingStatus:
         return AbstractBackendUpdater::Downloading;
     case Transaction::CommittingStatus:
         return AbstractBackendUpdater::Installing;
     case Transaction::DoneStatus:
     case Transaction::DoneWithErrorStatus:
     case Transaction::CancelledStatus:
         return AbstractBackendUpdater::Done;
     }
     Q_UNREACHABLE();
 }
 
 void StandardBackendUpdater::transactionProgressChanged()
 {
     Transaction *t = qobject_cast<Transaction *>(sender());
     Q_EMIT resourceProgressed(t->resource(), t->progress(), toUpdateState(t));
 
     refreshProgress();
 }
 
 void StandardBackendUpdater::transactionRemoved(Transaction *t)
 {
     const bool fromOurBackend = t->resource() && t->resource()->backend() == m_backend;
     if (!fromOurBackend) {
         return;
     }
 
     const bool found = fromOurBackend && m_pendingResources.remove(t->resource());
     m_anyTransactionFailed |= t->status() != Transaction::DoneStatus;
 
     if (found && !m_settingUp) {
         refreshProgress();
         if (m_pendingResources.isEmpty()) {
             cleanup();
             if (needsReboot() && !m_anyTransactionFailed) {
                 enableReadyToReboot();
             }
         }
     }
     refreshUpdateable();
 }
 
 void StandardBackendUpdater::refreshProgress()
 {
     if (m_toUpgrade.isEmpty()) {
         return;
     }
 
     int allProgresses = (m_toUpgrade.size() - m_pendingResources.size()) * 100;
     const auto allTransactions = transactions();
     for (auto t : allTransactions) {
         allProgresses += t->progress();
     }
     setProgress(allProgresses / m_toUpgrade.size());
 }
 
 void StandardBackendUpdater::refreshUpdateable()
 {
     if (m_backend->isFetching() || !m_backend->isValid()) {
         return;
     }
 
     if (isProgressing()) {
         m_timer.start(1000);
         return;
     }
 
     m_settingUp = true;
     Q_EMIT progressingChanged(true);
     AbstractResourcesBackend::Filters f;
     f.state = AbstractResource::Upgradeable;
     m_upgradeable.clear();
     auto r = m_backend->search(f);
     connect(r, &ResultsStream::resourcesFound, this, [this](const QVector<AbstractResource *> &resources) {
         for (auto res : resources)
             if (res->state() == AbstractResource::Upgradeable)
                 m_upgradeable.insert(res);
     });
     connect(r, &ResultsStream::destroyed, this, [this]() {
         m_settingUp = false;
         Q_EMIT updatesCountChanged(updatesCount());
         Q_EMIT progressingChanged(false);
     });
 }
 
 qreal StandardBackendUpdater::progress() const
 {
     return m_progress;
 }
 
 void StandardBackendUpdater::setProgress(qreal p)
 {
     if (p > m_progress || p < 0) {
         m_progress = p;
         Q_EMIT progressChanged(p);
     }
 }
 
 void StandardBackendUpdater::prepare()
 {
     m_lastUpdate = QDateTime::currentDateTime();
     m_toUpgrade = m_upgradeable;
 }
 
 int StandardBackendUpdater::updatesCount() const
 {
     return m_upgradeable.count();
 }
 
 void StandardBackendUpdater::addResources(const QList<AbstractResource *> &apps)
 {
     const QSet<AbstractResource *> upgradeableApps = kToSet(apps);
     Q_ASSERT(m_upgradeable.contains(upgradeableApps));
     m_toUpgrade += upgradeableApps;
 }
 
 void StandardBackendUpdater::removeResources(const QList<AbstractResource *> &apps)
 {
     const QSet<AbstractResource *> upgradeableApps = kToSet(apps);
     Q_ASSERT(m_upgradeable.contains(upgradeableApps));
     Q_ASSERT(m_toUpgrade.contains(upgradeableApps));
     m_toUpgrade -= upgradeableApps;
 }
 
 void StandardBackendUpdater::cleanup()
 {
     m_lastUpdate = QDateTime::currentDateTime();
     m_toUpgrade.clear();
 
     refreshUpdateable();
     Q_EMIT progressingChanged(false);
 }
 
 QList<AbstractResource *> StandardBackendUpdater::toUpdate() const
 {
     return m_toUpgrade.values();
 }
 
 bool StandardBackendUpdater::isMarked(AbstractResource *res) const
 {
     return m_toUpgrade.contains(res);
 }
 
 QDateTime StandardBackendUpdater::lastUpdate() const
 {
     return m_lastUpdate;
 }
 
 bool StandardBackendUpdater::isCancelable() const
 {
     return m_canCancel;
 }
 
 bool StandardBackendUpdater::isProgressing() const
 {
     return m_settingUp || !m_pendingResources.isEmpty();
 }
 
 double StandardBackendUpdater::updateSize() const
 {
     double ret = 0.;
     for (AbstractResource *res : m_toUpgrade) {
         ret += res->size();
     }
     return ret;
 }
 
 QVector<Transaction *> StandardBackendUpdater::transactions() const
 {
     const auto trans = TransactionModel::global()->transactions();
     return kFilter<QVector<Transaction *>>(trans, [this](Transaction *t) {
         return t->property("updater").value<QObject *>() == this;
     });
 }
 
 quint64 StandardBackendUpdater::downloadSpeed() const
 {
     quint64 ret = 0;
     const auto trans = transactions();
     for (Transaction *t : trans) {
         ret += t->downloadSpeed();
     }
     return ret;
 }