#include "LegacyInstance.h"
#include "LegacyInstance_p.h"
#include "MinecraftProcess.h"
#include "LegacyUpdate.h"
#include "lists/IconList.h"
#include <setting.h>
#include <pathutils.h>
#include <cmdutils.h>
#include "gui/LegacyModEditDialog.h"
#include <QFileInfo>
#include <QDir>
#include <QImage>
#include <MultiMC.h>

#define LAUNCHER_FILE "MultiMCLauncher.jar"

LegacyInstance::LegacyInstance(const QString &rootDir, SettingsObject *settings,
							   QObject *parent)
	: BaseInstance(new LegacyInstancePrivate(), rootDir, settings, parent)
{
	settings->registerSetting(new Setting("NeedsRebuild", true));
	settings->registerSetting(new Setting("ShouldUpdate", false));
	settings->registerSetting(new Setting("JarVersion", "Unknown"));
	settings->registerSetting(new Setting("LwjglVersion", "2.9.0"));
	settings->registerSetting(new Setting("IntendedJarVersion", ""));
}

BaseUpdate *LegacyInstance::doUpdate()
{
	auto list = jarModList();
	return new LegacyUpdate(this, this);
}

MinecraftProcess *LegacyInstance::prepareForLaunch(LoginResponse response)
{
	MinecraftProcess *proc = new MinecraftProcess(this);

	QIcon icon = MMC->icons()->getIcon(iconKey());
	auto pixmap = icon.pixmap(128, 128);
	pixmap.save(PathCombine(minecraftRoot(), "icon.png"), "PNG");

	// extract the legacy launcher
	QFile(":/launcher/launcher.jar").copy(PathCombine(minecraftRoot(), LAUNCHER_FILE));

	// set the process arguments
	{
		QStringList args;

		// window size
		QString windowSize;
		if (settings().get("LaunchMaximized").toBool())
			windowSize = "max";
		else
			windowSize = QString("%1x%2").arg(settings().get("MinecraftWinWidth").toInt()).arg(
				settings().get("MinecraftWinHeight").toInt());

		// window title
		QString windowTitle;
		windowTitle.append("MultiMC: ").append(name());

		// Java arguments
		args.append(Util::Commandline::splitArgs(settings().get("JvmArgs").toString()));

#ifdef OSX
		// OSX dock icon and name
		args << "-Xdock:icon=icon.png";
		args << QString("-Xdock:name=\"%1\"").arg(windowTitle);
#endif

		QString lwjgl = QDir(MMC->settings()->get("LWJGLDir").toString() + "/" + lwjglVersion())
							.absolutePath();

		// launcher arguments
		args << QString("-Xms%1m").arg(settings().get("MinMemAlloc").toInt());
		args << QString("-Xmx%1m").arg(settings().get("MaxMemAlloc").toInt());
		args << QString("-XX:PermSize=%1m").arg(settings().get("PermGen").toInt());
		args << "-jar" << LAUNCHER_FILE;
		args << response.player_name;
		args << response.session_id;
		args << windowTitle;
		args << windowSize;
		args << lwjgl;
		proc->setMinecraftArguments(args);
	}

	// set the process work path
	proc->setMinecraftWorkdir(minecraftRoot());

	return proc;
}

void LegacyInstance::cleanupAfterRun()
{
	// FIXME: delete the launcher and icons and whatnot.
}

std::shared_ptr<ModList> LegacyInstance::coreModList()
{
	I_D(LegacyInstance);
	if (!d->core_mod_list)
	{
		d->core_mod_list.reset(new ModList(coreModsDir()));
	}
	d->core_mod_list->update();
	return d->core_mod_list;
}

std::shared_ptr<ModList> LegacyInstance::jarModList()
{
	I_D(LegacyInstance);
	if (!d->jar_mod_list)
	{
		auto list = new ModList(jarModsDir(), modListFile());
		connect(list, SIGNAL(changed()), SLOT(jarModsChanged()));
		d->jar_mod_list.reset(list);
	}
	d->jar_mod_list->update();
	return d->jar_mod_list;
}

void LegacyInstance::jarModsChanged()
{
	setShouldRebuild(true);
}

std::shared_ptr<ModList> LegacyInstance::loaderModList()
{
	I_D(LegacyInstance);
	if (!d->loader_mod_list)
	{
		d->loader_mod_list.reset(new ModList(loaderModsDir()));
	}
	d->loader_mod_list->update();
	return d->loader_mod_list;
}

std::shared_ptr<ModList> LegacyInstance::texturePackList()
{
	I_D(LegacyInstance);
	if (!d->texture_pack_list)
	{
		d->texture_pack_list.reset(new ModList(texturePacksDir()));
	}
	d->texture_pack_list->update();
	return d->texture_pack_list;
}

QDialog *LegacyInstance::createModEditDialog(QWidget *parent)
{
	return new LegacyModEditDialog(this, parent);
}

QString LegacyInstance::jarModsDir() const
{
	return PathCombine(instanceRoot(), "instMods");
}

QString LegacyInstance::binDir() const
{
	return PathCombine(minecraftRoot(), "bin");
}

QString LegacyInstance::savesDir() const
{
	return PathCombine(minecraftRoot(), "saves");
}

QString LegacyInstance::loaderModsDir() const
{
	return PathCombine(minecraftRoot(), "mods");
}

QString LegacyInstance::coreModsDir() const
{
	return PathCombine(minecraftRoot(), "coremods");
}

QString LegacyInstance::resourceDir() const
{
	return PathCombine(minecraftRoot(), "resources");
}
QString LegacyInstance::texturePacksDir() const
{
	return PathCombine(minecraftRoot(), "texturepacks");
}

QString LegacyInstance::runnableJar() const
{
	return PathCombine(binDir(), "minecraft.jar");
}

QString LegacyInstance::modListFile() const
{
	return PathCombine(instanceRoot(), "modlist");
}

QString LegacyInstance::instanceConfigFolder() const
{
	return PathCombine(minecraftRoot(), "config");
}

/*
bool LegacyInstance::shouldUpdateCurrentVersion() const
{
	QFileInfo jar(runnableJar());
	return jar.lastModified().toUTC().toMSecsSinceEpoch() != lastCurrentVersionUpdate();
}

void LegacyInstance::updateCurrentVersion(bool keepCurrent)
{
	QFileInfo jar(runnableJar());

	if(!jar.exists())
	{
		setLastCurrentVersionUpdate(0);
		setCurrentVersionId("Unknown");
		return;
	}

	qint64 time = jar.lastModified().toUTC().toMSecsSinceEpoch();

	setLastCurrentVersionUpdate(time);
	if (!keepCurrent)
	{
		// TODO: Implement GetMinecraftJarVersion function.
		QString newVersion =
"Unknown";//javautils::GetMinecraftJarVersion(jar.absoluteFilePath());
		setCurrentVersionId(newVersion);
	}
}
qint64 LegacyInstance::lastCurrentVersionUpdate() const
{
	I_D(LegacyInstance);
	return d->m_settings->get ( "lastVersionUpdate" ).value<qint64>();
}
void LegacyInstance::setLastCurrentVersionUpdate ( qint64 val )
{
	I_D(LegacyInstance);
	d->m_settings->set ( "lastVersionUpdate", val );
}
*/
bool LegacyInstance::shouldRebuild() const
{
	I_D(LegacyInstance);
	return d->m_settings->get("NeedsRebuild").toBool();
}
void LegacyInstance::setShouldRebuild(bool val)
{
	I_D(LegacyInstance);
	d->m_settings->set("NeedsRebuild", val);
}
QString LegacyInstance::currentVersionId() const
{
	I_D(LegacyInstance);
	return d->m_settings->get("JarVersion").toString();
}

void LegacyInstance::setCurrentVersionId(QString val)
{
	I_D(LegacyInstance);
	d->m_settings->set("JarVersion", val);
}

QString LegacyInstance::lwjglVersion() const
{
	I_D(LegacyInstance);
	return d->m_settings->get("LwjglVersion").toString();
}
void LegacyInstance::setLWJGLVersion(QString val)
{
	I_D(LegacyInstance);
	d->m_settings->set("LwjglVersion", val);
}
QString LegacyInstance::intendedVersionId() const
{
	I_D(LegacyInstance);
	return d->m_settings->get("IntendedJarVersion").toString();
}
bool LegacyInstance::setIntendedVersionId(QString version)
{
	settings().set("IntendedJarVersion", version);
	setShouldUpdate(true);
	return true;
}
bool LegacyInstance::shouldUpdate() const
{
	I_D(LegacyInstance);
	QVariant var = settings().get("ShouldUpdate");
	if (!var.isValid() || var.toBool() == false)
	{
		return intendedVersionId() != currentVersionId();
	}
	return true;
}
void LegacyInstance::setShouldUpdate(bool val)
{
	settings().set("ShouldUpdate", val);
}

QString LegacyInstance::defaultBaseJar() const
{
	return "versions/" + intendedVersionId() + "/" + intendedVersionId() + ".jar";
}

QString LegacyInstance::defaultCustomBaseJar() const
{
	return PathCombine(binDir(), "mcbackup.jar");
}

bool LegacyInstance::menuActionEnabled(QString action_name) const
{
	if (action_name == "actionChangeInstMCVersion")
		return false;
	return true;
}

QString LegacyInstance::getStatusbarDescription()
{
	if (shouldUpdate())
		return "Legacy : " + currentVersionId() + " -> " + intendedVersionId();
	else
		return "Legacy : " + currentVersionId();
}