/********************************************************************************
* FaceTrackNoIR		This program is a private project of some enthusiastic		*
*					gamers from Holland, who don't like to pay much for			*
*					head-tracking.												*
*																				*
* Copyright (C) 2012	Wim Vriend (Developing)									*
*						Ron Hendriks (Researching and Testing)					*
*																				*
* Homepage																		*
*																				*
* This program is free software; you can redistribute it and/or modify it		*
* under the terms of the GNU General Public License as published by the			*
* Free Software Foundation; either version 3 of the License, or (at your		*
* option) any later version.													*
*																				*
* This program is distributed in the hope that it will be useful, but			*
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY	*
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for	*
* more details.																	*
*																				*
* You should have received a copy of the GNU General Public License along		*
* with this program; if not, see <http://www.gnu.org/licenses/>.				*
*																				*
********************************************************************************/
#include "ftnoir_protocol_ft.h"
#include <QDebug>
#include <QFileDialog>

//*******************************************************************************************************
// FaceTrackNoIR Client Settings-dialog.
//*******************************************************************************************************

//
// Constructor for server-settings-dialog
//
FTControls::FTControls() :
QWidget()
{
	QString aFileName;														// File Path and Name

	ui.setupUi( this );

	// Connect Qt signals to member-functions
	connect(ui.btnOK, SIGNAL(clicked()), this, SLOT(doOK()));
	connect(ui.btnCancel, SIGNAL(clicked()), this, SLOT(doCancel()));
	connect(ui.bntLocateNPClient, SIGNAL(clicked()), this, SLOT(selectDLL()));
	connect(ui.chkTIRViews, SIGNAL(stateChanged(int)), this, SLOT(settingChanged()));
	connect(ui.chkStartDummy, SIGNAL(stateChanged(int)), this, SLOT(settingChanged()));
	connect(ui.cbxSelectInterface, SIGNAL(currentIndexChanged(int)), this, SLOT(settingChanged( int )));

	ui.cbxSelectInterface->addItem("Enable both");
	ui.cbxSelectInterface->addItem("Use FreeTrack, hide TrackIR");
	ui.cbxSelectInterface->addItem("Use TrackIR, hide FreeTrack");

	theProtocol = NULL;

	// Load the settings from the current .INI-file
	loadSettings();


	aFileName = QCoreApplication::applicationDirPath() + "/TIRViews.dll";
	if ( !QFile::exists( aFileName ) ) {
		ui.chkTIRViews->setChecked( false );
		ui.chkTIRViews->setEnabled ( false );

		//
		// Best do this save() last, or it will continually reset the settings... :-(
		//
		save();
	}
	else {
		ui.chkTIRViews->setEnabled ( true );
	}


}

//
// Destructor for server-dialog
//
FTControls::~FTControls() {
	qDebug() << "~FTControls() says: started";
}

//
// Initialize tracker-client-dialog
//
void FTControls::Initialize(QWidget *parent) {

	QPoint offsetpos(100, 100);
	if (parent) {
		this->move(parent->pos() + offsetpos);
	}
	show();
}

//
// OK clicked on server-dialog
//
void FTControls::doOK() {
	save();
	this->close();
}

// override show event
void FTControls::showEvent ( QShowEvent * event ) {
	loadSettings();
}

//
// Cancel clicked on server-dialog
//
void FTControls::doCancel() {
	//
	// Ask if changed Settings should be saved
	//
	if (settingsDirty) {
		int ret = QMessageBox::question ( this, "Settings have changed", "Do you want to save the settings?", QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel, QMessageBox::Discard );

		qDebug() << "doCancel says: answer =" << ret;

		switch (ret) {
			case QMessageBox::Save:
				save();
				this->close();
				break;
			case QMessageBox::Discard:
				this->close();
				break;
			case QMessageBox::Cancel:
				// Cancel was clicked
				break;
			default:
				// should never be reached
			break;
		}
	}
	else {
		this->close();
	}
}

//
// Load the current Settings from the currently 'active' INI-file.
//
void FTControls::loadSettings() {
	qDebug() << "loadSettings says: Starting ";
	QSettings settings("opentrack");	// Registry settings (in HK_USER)

	QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();
	QSettings iniFile( currentFile, QSettings::IniFormat );		// Application settings (in INI-file)

	qDebug() << "loadSettings says: iniFile = " << currentFile;

	iniFile.beginGroup ( "FT" );
	ui.cbxSelectInterface->setCurrentIndex( iniFile.value ( "UsedInterface", 0 ).toInt() );
	iniFile.endGroup ();

	iniFile.beginGroup ( "FTIR" );
	ui.chkTIRViews->setChecked (iniFile.value ( "useTIRViews", 0 ).toBool());
	ui.chkStartDummy->setChecked (iniFile.value ( "useDummyExe", 1 ).toBool());
	iniFile.endGroup ();

	settingsDirty = false;
}

//
// Save the current Settings to the currently 'active' INI-file.
//
void FTControls::save() {
	QSettings settings("opentrack");	// Registry settings (in HK_USER)

	QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();
	QSettings iniFile( currentFile, QSettings::IniFormat );		// Application settings (in INI-file)

	iniFile.beginGroup ( "FT" );
	iniFile.setValue ( "UsedInterface", ui.cbxSelectInterface->currentIndex());
	iniFile.endGroup ();

	iniFile.beginGroup ( "FTIR" );
	iniFile.setValue ( "useTIRViews", ui.chkTIRViews->isChecked() );
	iniFile.setValue ( "useDummyExe", ui.chkStartDummy->isChecked() );
	iniFile.endGroup ();

	settingsDirty = false;
}

//
// Select a NPClient.dll file, to repair the Location in the Registry.
// Several program distribute their own version of this file.
//
void FTControls::selectDLL() {
	QFileDialog::Options options;
	QFileDialog::FileMode mode;

    options |= QFileDialog::DontUseNativeDialog;
	mode = QFileDialog::ExistingFile;
    QString selectedFilter;
	QString fileName = QFileDialog::getOpenFileName( this, tr("Select the desired NPClient DLL"), QCoreApplication::applicationDirPath() + "/NPClient.dll", tr("Dll file (*.dll);;All Files (*)"));

	//
	// Write the location of the file in the required Registry-key.
	//
	if (! fileName.isEmpty() ) {
		if (fileName.endsWith("NPClient.dll", Qt::CaseInsensitive) ) {
			QSettings settingsTIR("NaturalPoint", "NATURALPOINT\\NPClient Location");			// Registry settings (in HK_USER)
			QString aLocation = fileName.left(fileName.length() - 12);							// Location of Client DLL

			settingsTIR.setValue( "Path" , aLocation );
		}
	}
}


////////////////////////////////////////////////////////////////////////////////
// Factory function that creates instances if the Protocol-settings dialog object.

// Export both decorated and undecorated names.
//   GetProtocolDialog     - Undecorated name, which can be easily used with GetProcAddress
//                          Win32 API function.
//   _GetProtocolDialog@0  - Common name decoration for __stdcall functions in C language.
extern "C" FTNOIR_PROTOCOL_BASE_EXPORT IProtocolDialog* CALLING_CONVENTION GetDialog( )
{
    return new FTControls;
}