#include "InstanceSettingsPage.h"
#include "ui_InstanceSettingsPage.h"

#include <QFileDialog>
#include <QDialog>
#include <QMessageBox>

#include "dialogs/VersionSelectDialog.h"
#include "JavaCommon.h"
#include "MultiMC.h"

#include <java/JavaInstallList.h>
#include <FileSystem.h>
#include <sys.h>
#include <widgets/CustomCommands.h>

InstanceSettingsPage::InstanceSettingsPage(BaseInstance *inst, QWidget *parent)
	: QWidget(parent), ui(new Ui::InstanceSettingsPage), m_instance(inst)
{
	m_settings = inst->settings();
	ui->setupUi(this);
	auto sysMB = Sys::getSystemRam() / Sys::megabyte;
	ui->maxMemSpinBox->setMaximum(sysMB);
	loadSettings();
}

bool InstanceSettingsPage::shouldDisplay() const
{
	return !m_instance->isRunning();
}

InstanceSettingsPage::~InstanceSettingsPage()
{
	delete ui;
}

bool InstanceSettingsPage::apply()
{
	applySettings();
	return true;
}

void InstanceSettingsPage::applySettings()
{
	SettingsObject::Lock lock(m_settings);

	// Console
	bool console = ui->consoleSettingsBox->isChecked();
	m_settings->set("OverrideConsole", console);
	if (console)
	{
		m_settings->set("ShowConsole", ui->showConsoleCheck->isChecked());
		m_settings->set("AutoCloseConsole", ui->autoCloseConsoleCheck->isChecked());
		m_settings->set("ShowConsoleOnError", ui->showConsoleErrorCheck->isChecked());
	}
	else
	{
		m_settings->reset("ShowConsole");
		m_settings->reset("AutoCloseConsole");
		m_settings->reset("ShowConsoleOnError");
	}

	// Window Size
	bool window = ui->windowSizeGroupBox->isChecked();
	m_settings->set("OverrideWindow", window);
	if (window)
	{
		m_settings->set("LaunchMaximized", ui->maximizedCheckBox->isChecked());
		m_settings->set("MinecraftWinWidth", ui->windowWidthSpinBox->value());
		m_settings->set("MinecraftWinHeight", ui->windowHeightSpinBox->value());
	}
	else
	{
		m_settings->reset("LaunchMaximized");
		m_settings->reset("MinecraftWinWidth");
		m_settings->reset("MinecraftWinHeight");
	}

	// Memory
	bool memory = ui->memoryGroupBox->isChecked();
	m_settings->set("OverrideMemory", memory);
	if (memory)
	{
		int min = ui->minMemSpinBox->value();
		int max = ui->maxMemSpinBox->value();
		if(min < max)
		{
			m_settings->set("MinMemAlloc", min);
			m_settings->set("MaxMemAlloc", max);
		}
		else
		{
			m_settings->set("MinMemAlloc", max);
			m_settings->set("MaxMemAlloc", min);
		}
		m_settings->set("PermGen", ui->permGenSpinBox->value());
	}
	else
	{
		m_settings->reset("MinMemAlloc");
		m_settings->reset("MaxMemAlloc");
		m_settings->reset("PermGen");
	}

	// Java Install Settings
	bool javaInstall = ui->javaSettingsGroupBox->isChecked();
	m_settings->set("OverrideJavaLocation", javaInstall);
	if (javaInstall)
	{
		m_settings->set("JavaPath", ui->javaPathTextBox->text());
	}
	else
	{
		m_settings->reset("JavaPath");
	}

	// Java arguments
	bool javaArgs = ui->javaArgumentsGroupBox->isChecked();
	m_settings->set("OverrideJavaArgs", javaArgs);
	if(javaArgs)
	{
		m_settings->set("JvmArgs", ui->jvmArgsTextBox->toPlainText().replace("\n", " "));
		JavaCommon::checkJVMArgs(m_settings->get("JvmArgs").toString(), this->parentWidget());
	}
	else
	{
		m_settings->reset("JvmArgs");
	}

	// old generic 'override both' is removed.
	m_settings->reset("OverrideJava");

	// Custom Commands
	bool custcmd = ui->customCommands->checked();
	m_settings->set("OverrideCommands", custcmd);
	if (custcmd)
	{
		m_settings->set("PreLaunchCommand", ui->customCommands->prelaunchCommand());
		m_settings->set("WrapperCommand", ui->customCommands->wrapperCommand());
		m_settings->set("PostExitCommand", ui->customCommands->postexitCommand());
	}
	else
	{
		m_settings->reset("PreLaunchCommand");
		m_settings->reset("WrapperCommand");
		m_settings->reset("PostExitCommand");
	}
}

void InstanceSettingsPage::loadSettings()
{
	// Console
	ui->consoleSettingsBox->setChecked(m_settings->get("OverrideConsole").toBool());
	ui->showConsoleCheck->setChecked(m_settings->get("ShowConsole").toBool());
	ui->autoCloseConsoleCheck->setChecked(m_settings->get("AutoCloseConsole").toBool());
	ui->showConsoleErrorCheck->setChecked(m_settings->get("ShowConsoleOnError").toBool());

	// Window Size
	ui->windowSizeGroupBox->setChecked(m_settings->get("OverrideWindow").toBool());
	ui->maximizedCheckBox->setChecked(m_settings->get("LaunchMaximized").toBool());
	ui->windowWidthSpinBox->setValue(m_settings->get("MinecraftWinWidth").toInt());
	ui->windowHeightSpinBox->setValue(m_settings->get("MinecraftWinHeight").toInt());

	// Memory
	ui->memoryGroupBox->setChecked(m_settings->get("OverrideMemory").toBool());
	int min = m_settings->get("MinMemAlloc").toInt();
	int max = m_settings->get("MaxMemAlloc").toInt();
	if(min < max)
	{
		ui->minMemSpinBox->setValue(min);
		ui->maxMemSpinBox->setValue(max);
	}
	else
	{
		ui->minMemSpinBox->setValue(max);
		ui->maxMemSpinBox->setValue(min);
	}
	ui->permGenSpinBox->setValue(m_settings->get("PermGen").toInt());

	// Java Settings
	bool overrideJava = m_settings->get("OverrideJava").toBool();
	bool overrideLocation = m_settings->get("OverrideJavaLocation").toBool() || overrideJava;
	bool overrideArgs = m_settings->get("OverrideJavaArgs").toBool() || overrideJava;

	ui->javaSettingsGroupBox->setChecked(overrideLocation);
	ui->javaPathTextBox->setText(m_settings->get("JavaPath").toString());

	ui->javaArgumentsGroupBox->setChecked(overrideArgs);
	ui->jvmArgsTextBox->setPlainText(m_settings->get("JvmArgs").toString());

	// Custom commands
	ui->customCommands->initialize(
		true,
		m_settings->get("OverrideCommands").toBool(),
		m_settings->get("PreLaunchCommand").toString(),
		m_settings->get("WrapperCommand").toString(),
		m_settings->get("PostExitCommand").toString()
	);
}

void InstanceSettingsPage::on_javaDetectBtn_clicked()
{
	JavaInstallPtr java;

	VersionSelectDialog vselect(MMC->javalist().get(), tr("Select a Java version"), this, true);
	vselect.setResizeOn(2);
	vselect.exec();

	if (vselect.result() == QDialog::Accepted && vselect.selectedVersion())
	{
		java = std::dynamic_pointer_cast<JavaInstall>(vselect.selectedVersion());
		ui->javaPathTextBox->setText(java->path);
	}
}

void InstanceSettingsPage::on_javaBrowseBtn_clicked()
{
	QString raw_path = QFileDialog::getOpenFileName(this, tr("Find Java executable"));

	// do not allow current dir - it's dirty. Do not allow dirs that don't exist
	if(raw_path.isEmpty())
	{
		return;
	}
	QString cooked_path = FS::NormalizePath(raw_path);

	QFileInfo javaInfo(cooked_path);;
	if(!javaInfo.exists() || !javaInfo.isExecutable())
	{
		return;
	}
	ui->javaPathTextBox->setText(cooked_path);
}

void InstanceSettingsPage::on_javaTestBtn_clicked()
{
	if(checker)
	{
		return;
	}
	checker.reset(new JavaCommon::TestCheck(
		this, ui->javaPathTextBox->text(), ui->jvmArgsTextBox->toPlainText().replace("\n", " "),
		ui->minMemSpinBox->value(), ui->maxMemSpinBox->value(), ui->permGenSpinBox->value()));
	connect(checker.get(), SIGNAL(finished()), SLOT(checkerFinished()));
	checker->run();
}

void InstanceSettingsPage::checkerFinished()
{
	checker.reset();
}