Method performMainStartupAction

launcher/Application.cpp:956–1026

}

void Application::performMainStartupAction()
{
    m_status = Application::Initialized;

    if(!m_instanceIdToLaunch.isEmpty())
    {
        auto inst = instances()->getInstanceById(m_instanceIdToLaunch);
        if(inst)
        {
            MinecraftServerTargetPtr serverToJoin = nullptr;
            MinecraftAccountPtr accountToUse = nullptr;

            qDebug() << "<> Instance" << m_instanceIdToLaunch << "launching";
            if(!m_serverToJoin.isEmpty())
            {
                // FIXME: validate the server string
                serverToJoin.reset(new MinecraftServerTarget(MinecraftServerTarget::parse(m_serverToJoin)));
                qDebug() << "   Launching with server" << m_serverToJoin;
            }

            if(!m_profileToUse.isEmpty())
            {
                accountToUse = accounts()->getAccountByProfileName(m_profileToUse);
                if(!accountToUse) {
                    return;
                }
                qDebug() << "   Launching with account" << m_profileToUse;
            }

            launch(inst, true, false, nullptr, serverToJoin, accountToUse);
            return;
        }
    }

    {
        bool shouldFetch = m_settings->get("FlameKeyShouldBeFetchedOnStartup").toBool();
        if (!BuildConfig.FLAME_API_KEY_API_URL.isEmpty() && shouldFetch && !(capabilities() & Capability::SupportsFlame))
        {
            auto response = QMessageBox::question(nullptr,
                                                  tr("Curseforge Core API Key"),
                                                  tr("Should PolyMC try to fetch the Official Curseforge Launcher's API Key? "
                                                     "Using this key technically breaks Curseforge's Terms of Service, but this distribution of PolyMC "
                                                     "does not come with a Curseforge API key by default, so without this key or another valid API key, "
                                                     "which you can always change in the settings, you won't be able to download Curseforge modpacks."),
                                                  QMessageBox::Yes | QMessageBox::No);

            if (response == QMessageBox::Yes)
            {
                QString apiKey = GuiUtil::fetchFlameKey();
                if (!apiKey.isEmpty())
                {
                    m_settings->set("FlameKeyOverride", apiKey);
                    updateCapabilities();
                }
            }
        }
        m_settings->set("FlameKeyShouldBeFetchedOnStartup", false);
    }