#include "systeminstaller.h"

#include <QtGui>
#include <QStackedWidget>
#include <QPushButton>
#include <QGroupBox>

#include "pagemanager.h"

#include "pagelanguage.h"
#include "pagelicense.h"
#include "pagepartitioning.h"
#include "pageconfiguration.h"
#include "pageinstall.h"
#include "pagefinish.h"

#include "pagecfdisk.h"

SystemInstaller::SystemInstaller(QWidget *parent) :
	QMainWindow(parent)
{
	// need for QMainWindow
	QWidget*		centralWidget = new QWidget(this);

	// buttons
	QHBoxLayout*	hbox_buttons = new QHBoxLayout;

	m_butPrev = new QPushButton( tr("Prevoius") );
	m_butNext = new QPushButton( tr("Next") );

	hbox_buttons->addStretch();
	hbox_buttons->addWidget( m_butPrev );
	hbox_buttons->addWidget( m_butNext );

	// right pannel = widget for pages + buttons
	QStackedWidget* stackPages = new QStackedWidget;

	QVBoxLayout*	vbox_1 = new QVBoxLayout;

	QGroupBox*		group_box_page = new QGroupBox;

	QVBoxLayout*	group_box_page_l = new QVBoxLayout;
	group_box_page_l->addWidget( stackPages );

	group_box_page->setLayout( group_box_page_l );

	vbox_1->addWidget( group_box_page );
	vbox_1->addLayout( hbox_buttons );

	// left pannel
	QLabel*			labelPages = new QLabel;
	QGroupBox*		group_box_list = new QGroupBox;

	QVBoxLayout*	group_box_list_l = new QVBoxLayout;
	group_box_list_l->addWidget( labelPages );

	group_box_list->setLayout( group_box_list_l );

	// left + right pannels
	QHBoxLayout*	hbox_2 = new QHBoxLayout;

	hbox_2->addWidget( group_box_list, 2 );
	hbox_2->addLayout( vbox_1, 9);

	// all window
	QVBoxLayout*	vbox_2 = new QVBoxLayout(centralWidget);

	m_labelImage = new QLabel("");
	m_labelImage->setAlignment( Qt::AlignHCenter | Qt::AlignVCenter );

	// logo
	QImage	logo( ":/img/calculate-logo.png" );
	m_labelImage->setPixmap( QPixmap::fromImage(logo) );

	vbox_2->addWidget( m_labelImage );
	vbox_2->addLayout( hbox_2 );

	setCentralWidget( centralWidget );

	// minimum size for window TODO: remove magic numbers
	setMinimumSize(800, 600);
	QRect	scr = QApplication::desktop()->screenGeometry();
	move( scr.width() - scr.width()/2 - 800/2, scr.height() - scr.height()/2 - 600/2 );

	// create PageManager and pages
	m_PageManager = new PageManager(stackPages, labelPages, this);

	PageLanguage*	pageLanguage = new PageLanguage( tr("Language") );
	connect( pageLanguage, SIGNAL(changeLanguage(int)), this, SLOT(changedLanguage(int)) );

	m_PageManager->addPage(pageLanguage);

	PageLicense*	pageLicense = new PageLicense( tr("License") );
	connect( pageLicense, SIGNAL(changeNext(bool)), this, SLOT(changedNext(bool)) );
	m_PageManager->addPage(pageLicense);

	PagePartitioning*	pagePartitoning = new PagePartitioning( tr("Partitioning") );
	connect( pagePartitoning, SIGNAL(manualyPartitioning(QString)), this, SLOT(doPartitioning(QString)) );
	connect( pagePartitoning, SIGNAL(selectedVolume(QString)), this, SLOT(volumeSelect(QString)) );
	m_PageManager->addPage(pagePartitoning);

	PageConfiguration* pageConfiguration = new PageConfiguration( tr("Configuring") );
	connect( pageConfiguration, SIGNAL(selectedSettings(InstallerSettings)),
			 this, SLOT(configurationSelect(InstallerSettings))
	);
	m_PageManager->addPage(pageConfiguration);

	PageInstall* pageInstall = new PageInstall( tr("Installing"), &m_InstallSettings );
//	connect( this, )
	connect( pageInstall, SIGNAL(changeNext(bool)), this, SLOT(changedNext(bool)) );
	connect( pageInstall, SIGNAL(changePrev(bool)), this, SLOT(changedPrev(bool)) );
	m_PageManager->addPage(pageInstall);

	PageFinish* pageFinish = new PageFinish( tr("Complete") );
	m_PageManager->addPage(pageFinish);

	m_PageManager->showFirst();

	connect( m_butNext, SIGNAL(clicked()), m_PageManager, SLOT(showNext()) );
	connect( m_butPrev, SIGNAL(clicked()), m_PageManager, SLOT(showPrevious()) );
}

SystemInstaller::~SystemInstaller()
{
	delete m_PageManager;
}


void SystemInstaller::changedNext(bool state)
{
	m_butNext->setEnabled(state);
}

void SystemInstaller::changedPrev(bool state)
{
	m_butPrev->setEnabled(state);
}

void SystemInstaller::changedLanguage(int lang)
{
	Q_UNUSED(lang);
}

void SystemInstaller::doPartitioning(QString disk)
{
	m_PageCfdisk = new PageCfdisk("Partitioning", disk);
	m_PageManager->showOnce(m_PageCfdisk);
	connect( m_PageCfdisk, SIGNAL(completed()), this, SLOT(completePartitioning()) );
}

void SystemInstaller::completePartitioning()
{
	delete m_PageCfdisk;
	m_PageManager->showPrevious();
}

void SystemInstaller::volumeSelect(QString volume)
{
	qDebug() << "Selected volume is " << volume;
	m_InstallSettings.disk = volume;
}

void SystemInstaller::configurationSelect(InstallerSettings settings)
{
	qDebug() << "Selected settings: ";
	qDebug() << "Host: " << settings.host;
	qDebug() << "FS: " << settings.fs;
	qDebug() << "Language: " << settings.language;
	qDebug() << "Timezone: " << settings.timezone;

	// replace selected volume
	settings.disk = m_InstallSettings.disk;
	m_InstallSettings = settings;
}