pollymc/launcher/minecraft/update/FMLLibrariesTask.cpp

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#include "Env.h"
#include <FileSystem.h>
#include <minecraft/VersionFilterData.h>
#include "FMLLibrariesTask.h"
#include "minecraft/MinecraftInstance.h"
#include "minecraft/PackProfile.h"
#include "BuildConfig.h"
FMLLibrariesTask::FMLLibrariesTask(MinecraftInstance * inst)
{
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m_inst = inst;
}
void FMLLibrariesTask::executeTask()
{
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// Get the mod list
MinecraftInstance *inst = (MinecraftInstance *)m_inst;
auto components = inst->getPackProfile();
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auto profile = components->getProfile();
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if (!profile->hasTrait("legacyFML"))
{
emitSucceeded();
return;
}
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QString version = components->getComponentVersion("net.minecraft");
auto &fmlLibsMapping = g_VersionFilterData.fmlLibsMapping;
if (!fmlLibsMapping.contains(version))
{
emitSucceeded();
return;
}
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auto &libList = fmlLibsMapping[version];
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// determine if we need some libs for FML or forge
setStatus(tr("Checking for FML libraries..."));
if(!components->getComponent("net.minecraftforge"))
{
emitSucceeded();
return;
}
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// 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);
}
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// if everything is in place, there's nothing to do here...
if (fmlLibsToProcess.isEmpty())
{
emitSucceeded();
return;
}
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// download missing libs to our place
setStatus(tr("Downloading FML libraries..."));
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auto dljob = new NetJob("FML libraries");
auto metacache = ENV.metacache();
for (auto &lib : fmlLibsToProcess)
{
auto entry = metacache->resolveEntry("fmllibs", lib.filename);
QString urlString = BuildConfig.FMLLIBS_BASE_URL + lib.filename;
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dljob->addNetAction(Net::Download::makeCached(QUrl(urlString), entry));
}
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connect(dljob, &NetJob::succeeded, this, &FMLLibrariesTask::fmllibsFinished);
connect(dljob, &NetJob::failed, this, &FMLLibrariesTask::fmllibsFailed);
connect(dljob, &NetJob::progress, this, &FMLLibrariesTask::progress);
downloadJob.reset(dljob);
downloadJob->start();
}
bool FMLLibrariesTask::canAbort() const
{
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return true;
}
void FMLLibrariesTask::fmllibsFinished()
{
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downloadJob.reset();
if (!fmlLibsToProcess.isEmpty())
{
setStatus(tr("Copying FML libraries into the instance..."));
MinecraftInstance *inst = (MinecraftInstance *)m_inst;
auto metacache = ENV.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)
{
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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()
{
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if(downloadJob)
{
return downloadJob->abort();
}
else
{
qWarning() << "Prematurely aborted FMLLibrariesTask";
}
return true;
}