PrismLauncher/api/logic/minecraft/update/LibrariesTask.cpp

#include "Env.h"
#include "LibrariesTask.h"
#include "minecraft/MinecraftInstance.h"
#include "minecraft/ComponentList.h"

LibrariesTask::LibrariesTask(MinecraftInstance * inst)
{
    m_inst = inst;
}

void LibrariesTask::executeTask()
{
    setStatus(tr("Getting the library files from Mojang..."));
    qDebug() << m_inst->name() << ": downloading libraries";
    MinecraftInstance *inst = (MinecraftInstance *)m_inst;

    // Build a list of URLs that will need to be downloaded.
    auto components = inst->getComponentList();
    auto profile = components->getProfile();

    auto job = new NetJob(tr("Libraries for instance %1").arg(inst->name()));
    downloadJob.reset(job);

    auto metacache = ENV.metacache();
    QStringList failedLocalFiles;

    QList<LibraryPtr> artifactPool;
    artifactPool.append(profile->getLibraries());
    artifactPool.append(profile->getNativeLibraries());
    artifactPool.append(profile->getJarMods());
    artifactPool.append(profile->getMainJar());
    for (auto lib : artifactPool)
    {
        if(!lib)
        {
            emitFailed(tr("Null jar is specified in the metadata, aborting."));
            return;
        }
        auto dls = lib->getDownloads(currentSystem, metacache.get(), failedLocalFiles, inst->getLocalLibraryPath());
        for(auto dl : dls)
        {
            downloadJob->addNetAction(dl);
        }
    }

    if (!failedLocalFiles.empty())
    {
        downloadJob.reset();
        QString failed_all = failedLocalFiles.join("\n");
        emitFailed(tr("Some libraries marked as 'local' are missing their jar files:\n%1\n\nYou'll have to correct this problem manually.").arg(failed_all));
        return;
    }
    connect(downloadJob.get(), &NetJob::succeeded, this, &LibrariesTask::emitSucceeded);
    connect(downloadJob.get(), &NetJob::failed, this, &LibrariesTask::jarlibFailed);
    connect(downloadJob.get(), &NetJob::progress, this, &LibrariesTask::progress);
    downloadJob->start();
}

bool LibrariesTask::canAbort() const
{
    return true;
}

void LibrariesTask::jarlibFailed(QString reason)
{
    emitFailed(tr("Game update failed: it was impossible to fetch the required libraries.\nReason:\n%1").arg(reason));
}

bool LibrariesTask::abort()
{
    if(downloadJob)
    {
        return downloadJob->abort();
    }
    else
    {
        qWarning() << "Prematurely aborted LibrariesTask";
    }
    return true;
}