pollymc/api/logic/InstanceImportTask.cpp
Petr Mrázek 1b4851a941 NOISSUE use QtConcurrent to run FS operations in worker threads
Not all operations - only the ones that aren't in error handling.
The API for QFuture is too nasty to do much more in a sensible way.
2016-10-26 18:21:25 +02:00

165 lines
4.7 KiB
C++

#include "InstanceImportTask.h"
#include "BaseInstance.h"
#include "BaseInstanceProvider.h"
#include "FileSystem.h"
#include "Env.h"
#include "MMCZip.h"
#include "NullInstance.h"
#include "settings/INISettingsObject.h"
#include "icons/IIconList.h"
#include <QtConcurrentRun>
InstanceImportTask::InstanceImportTask(SettingsObjectPtr settings, const QUrl sourceUrl, BaseInstanceProvider * target,
const QString &instName, const QString &instIcon, const QString &instGroup)
{
m_globalSettings = settings;
m_sourceUrl = sourceUrl;
m_target = target;
m_instName = instName;
m_instIcon = instIcon;
m_instGroup = instGroup;
}
void InstanceImportTask::executeTask()
{
InstancePtr newInstance;
if (m_sourceUrl.isLocalFile())
{
m_archivePath = m_sourceUrl.toLocalFile();
extractAndTweak();
}
else
{
setStatus(tr("Downloading modpack:\n%1").arg(m_sourceUrl.toString()));
m_downloadRequired = true;
const QString path = m_sourceUrl.host() + '/' + m_sourceUrl.path();
auto entry = ENV.metacache()->resolveEntry("general", path);
entry->setStale(true);
m_filesNetJob.reset(new NetJob(tr("Modpack download")));
m_filesNetJob->addNetAction(Net::Download::makeCached(m_sourceUrl, entry));
m_archivePath = entry->getFullPath();
auto job = m_filesNetJob.get();
connect(job, &NetJob::succeeded, this, &InstanceImportTask::downloadSucceeded);
connect(job, &NetJob::progress, this, &InstanceImportTask::downloadProgressChanged);
connect(job, &NetJob::failed, this, &InstanceImportTask::downloadFailed);
m_filesNetJob->start();
}
}
void InstanceImportTask::downloadSucceeded()
{
extractAndTweak();
}
void InstanceImportTask::downloadFailed(QString reason)
{
emitFailed(reason);
}
void InstanceImportTask::downloadProgressChanged(qint64 current, qint64 total)
{
setProgress(current / 2, total);
}
static QFileInfo findRecursive(const QString &dir, const QString &name)
{
for (const auto info : QDir(dir).entryInfoList(QDir::NoDotAndDotDot | QDir::Dirs | QDir::Files, QDir::DirsLast))
{
if (info.isFile() && info.fileName() == name)
{
return info;
}
else if (info.isDir())
{
const QFileInfo res = findRecursive(info.absoluteFilePath(), name);
if (res.isFile() && res.exists())
{
return res;
}
}
}
return QFileInfo();
}
void InstanceImportTask::extractAndTweak()
{
setStatus(tr("Extracting modpack"));
m_stagingPath = m_target->getStagedInstancePath();
QDir extractDir(m_stagingPath);
qDebug() << "Attempting to create instance from" << m_archivePath;
m_extractFuture = QtConcurrent::run(QThreadPool::globalInstance(), MMCZip::extractDir, m_archivePath, extractDir.absolutePath());
connect(&m_extractFutureWatcher, &QFutureWatcher<QStringList>::finished, this, &InstanceImportTask::extractFinished);
connect(&m_extractFutureWatcher, &QFutureWatcher<QStringList>::canceled, this, &InstanceImportTask::extractAborted);
m_extractFutureWatcher.setFuture(m_extractFuture);
}
void InstanceImportTask::extractFinished()
{
if (m_extractFuture.result().isEmpty())
{
m_target->destroyStagingPath(m_stagingPath);
emitFailed(tr("Failed to extract modpack"));
return;
}
QDir extractDir(m_stagingPath);
const QFileInfo instanceCfgFile = findRecursive(extractDir.absolutePath(), "instance.cfg");
if (!instanceCfgFile.isFile() || !instanceCfgFile.exists())
{
m_target->destroyStagingPath(m_stagingPath);
emitFailed(tr("Archive does not contain instance.cfg"));
return;
}
// FIXME: copy from FolderInstanceProvider!!! FIX IT!!!
auto instanceSettings = std::make_shared<INISettingsObject>(instanceCfgFile.absoluteFilePath());
instanceSettings->registerSetting("InstanceType", "Legacy");
QString actualDir = instanceCfgFile.absolutePath();
NullInstance instance(m_globalSettings, instanceSettings, actualDir);
// reset time played on import... because packs.
instance.resetTimePlayed();
// set a new nice name
instance.setName(m_instName);
// if the icon was specified by user, use that. otherwise pull icon from the pack
if (m_instIcon != "default")
{
instance.setIconKey(m_instIcon);
}
else
{
m_instIcon = instance.iconKey();
auto importIconPath = FS::PathCombine(instance.instanceRoot(), m_instIcon + ".png");
if (QFile::exists(importIconPath))
{
// import icon
auto iconList = ENV.icons();
if (iconList->iconFileExists(m_instIcon))
{
iconList->deleteIcon(m_instIcon);
}
iconList->installIcons({importIconPath});
}
}
if (!m_target->commitStagedInstance(m_stagingPath, actualDir, m_instName, m_instGroup))
{
m_target->destroyStagingPath(m_stagingPath);
emitFailed(tr("Unable to commit instance"));
return;
}
emitSucceeded();
}
void InstanceImportTask::extractAborted()
{
m_target->destroyStagingPath(m_stagingPath);
emitFailed(tr("Instance import has been aborted."));
return;
}