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// SPDX-License-Identifier: GPL-3.0-only
// SPDX-FileCopyrightText: 2026 Project Tick
// SPDX-FileContributor: Project Tick Team
/*
* ProjT Launcher - Minecraft Launcher
* 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, version 3.
*
* 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "FMLLibrariesTask.h"
#include "FileSystem.h"
#include "minecraft/MinecraftInstance.h"
#include "minecraft/PackProfile.h"
#include "minecraft/VersionFilterData.h"
#include "Application.h"
#include "BuildConfig.h"
#include "net/ApiDownload.h"
FMLLibrariesTask::FMLLibrariesTask(MinecraftInstance* inst)
{
m_inst = inst;
}
void FMLLibrariesTask::executeTask()
{
// Get the mod list
MinecraftInstance* inst = (MinecraftInstance*)m_inst;
auto components = inst->getPackProfile();
auto profile = components->getProfile();
if (!profile->hasTrait("legacyFML"))
{
emitSucceeded();
return;
}
QString version = components->getComponentVersion("net.minecraft");
auto& fmlLibsMapping = g_VersionFilterData.fmlLibsMapping;
if (!fmlLibsMapping.contains(version))
{
emitSucceeded();
return;
}
auto& libList = fmlLibsMapping[version];
// determine if we need some libs for FML or forge
setStatus(tr("Checking for FML libraries..."));
if (!components->getComponent("net.minecraftforge"))
{
emitSucceeded();
return;
}
// now check the lib folder inside the instance for files.
for (auto& lib : libList)
{
QFileInfo libInfo(FS::PathCombine(inst->libDir(), lib.filename));
if (libInfo.exists())
continue;
fmlLibsToProcess.append(lib);
}
// if everything is in place, there's nothing to do here...
if (fmlLibsToProcess.isEmpty())
{
emitSucceeded();
return;
}
// download missing libs to our place
setStatus(tr("Downloading FML libraries..."));
NetJob::Ptr dljob{ new NetJob("FML libraries", APPLICATION->network()) };
auto metacache = APPLICATION->metacache();
Net::Download::Options options = Net::Download::Option::MakeEternal;
for (auto& lib : fmlLibsToProcess)
{
auto entry = metacache->resolveEntry("fmllibs", lib.filename);
QString urlString = BuildConfig.FMLLIBS_BASE_URL + lib.filename;
dljob->addNetAction(Net::ApiDownload::makeCached(QUrl(urlString), entry, options));
}
connect(dljob.get(), &NetJob::succeeded, this, &FMLLibrariesTask::fmllibsFinished);
connect(dljob.get(), &NetJob::failed, this, &FMLLibrariesTask::fmllibsFailed);
connect(dljob.get(), &NetJob::aborted, this, &FMLLibrariesTask::emitAborted);
connect(dljob.get(), &NetJob::progress, this, &FMLLibrariesTask::progress);
connect(dljob.get(), &NetJob::stepProgress, this, &FMLLibrariesTask::propagateStepProgress);
downloadJob.reset(dljob);
downloadJob->start();
}
bool FMLLibrariesTask::canAbort() const
{
return true;
}
void FMLLibrariesTask::fmllibsFinished()
{
downloadJob.reset();
if (!fmlLibsToProcess.isEmpty())
{
setStatus(tr("Copying FML libraries into the instance..."));
MinecraftInstance* inst = (MinecraftInstance*)m_inst;
auto metacache = APPLICATION->metacache();
int index = 0;
for (auto& lib : fmlLibsToProcess)
{
progress(index, fmlLibsToProcess.size());
auto entry = metacache->resolveEntry("fmllibs", lib.filename);
auto path = FS::PathCombine(inst->libDir(), lib.filename);
if (!FS::ensureFilePathExists(path))
{
emitFailed(tr("Failed creating FML library folder inside the instance."));
return;
}
if (!QFile::copy(entry->getFullPath(), FS::PathCombine(inst->libDir(), lib.filename)))
{
emitFailed(tr("Failed copying Forge/FML library: %1.").arg(lib.filename));
return;
}
index++;
}
progress(index, fmlLibsToProcess.size());
}
emitSucceeded();
}
void FMLLibrariesTask::fmllibsFailed(QString reason)
{
QStringList failed = downloadJob->getFailedFiles();
QString failed_all = failed.join("\n");
emitFailed(
tr("Failed to download the following files:\n%1\n\nReason:%2\nPlease try again.").arg(failed_all, reason));
}
bool FMLLibrariesTask::abort()
{
if (downloadJob)
{
return downloadJob->abort();
}
else
{
qWarning() << "Prematurely aborted FMLLibrariesTask";
}
return true;
}
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