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/* SPDX-FileCopyrightText: 2026 Project Tick
* SPDX-FileContributor: Project Tick
* SPDX-License-Identifier: GPL-3.0-or-later
*
* MeshMC - A Custom Launcher for Minecraft
* Copyright (C) 2026 Project Tick
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "FileSink.h"
#include <QFile>
#include <QFileInfo>
#include "FileSystem.h"
namespace Net
{
FileSink::FileSink(QString filename) : m_filename(filename)
{
// nil
}
FileSink::~FileSink()
{
// nil
}
JobStatus FileSink::init(QNetworkRequest& request)
{
auto result = initCache(request);
if (result != Job_InProgress) {
return result;
}
// create a new save file and open it for writing
if (!FS::ensureFilePathExists(m_filename)) {
qCritical() << "Could not create folder for " + m_filename;
return Job_Failed;
}
wroteAnyData = false;
m_output_file.reset(new QSaveFile(m_filename));
if (!m_output_file->open(QIODevice::WriteOnly)) {
qCritical() << "Could not open " + m_filename + " for writing";
return Job_Failed;
}
if (initAllValidators(request))
return Job_InProgress;
return Job_Failed;
}
JobStatus FileSink::initCache(QNetworkRequest&)
{
return Job_InProgress;
}
JobStatus FileSink::write(QByteArray& data)
{
if (!writeAllValidators(data) ||
m_output_file->write(data) != data.size()) {
qCritical() << "Failed writing into " + m_filename;
m_output_file->cancelWriting();
m_output_file.reset();
wroteAnyData = false;
return Job_Failed;
}
wroteAnyData = true;
return Job_InProgress;
}
JobStatus FileSink::abort()
{
m_output_file->cancelWriting();
failAllValidators();
return Job_Failed;
}
JobStatus FileSink::finalize(QNetworkReply& reply)
{
bool gotFile = false;
QVariant statusCodeV =
reply.attribute(QNetworkRequest::HttpStatusCodeAttribute);
bool validStatus = false;
int statusCode = statusCodeV.toInt(&validStatus);
if (validStatus) {
// this leaves out 304 Not Modified
gotFile = statusCode == 200 || statusCode == 203;
}
// if we wrote any data to the save file, we try to commit the data to
// the real file. if it actually got a proper file, we write it even if
// it was empty
if (gotFile || wroteAnyData) {
// ask validators for data consistency
// we only do this for actual downloads, not 'your data is still the
// same' cache hits
if (!finalizeAllValidators(reply))
return Job_Failed;
// nothing went wrong...
if (!m_output_file->commit()) {
qCritical() << "Failed to commit changes to " << m_filename;
m_output_file->cancelWriting();
return Job_Failed;
}
}
// then get rid of the save file
m_output_file.reset();
return finalizeCache(reply);
}
JobStatus FileSink::finalizeCache(QNetworkReply&)
{
return Job_Finished;
}
bool FileSink::hasLocalData()
{
QFileInfo info(m_filename);
return info.exists() && info.size() != 0;
}
} // namespace Net
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