#include "mainw.h"
#include "types_qt.h"

#include <QApplication>
#include <QFile>
#include <QGridLayout>
#include <QMessageBox>
#include <QSettings>
#include <QSizePolicy>
#include <QSpacerItem>

#include "itkTextOutput.h"

  
#include <QVTKOpenGLNativeWidget.h>
#include <QSurfaceFormat>

int main(int argc, char **argv) {

	std::cout << "Hello, world!" << std::endl;
	
	vtkObject::SetGlobalWarningDisplay(false);
    itk::OutputWindow::SetInstance(itk::TextOutput::New());
    QSurfaceFormat::setDefaultFormat(QVTKOpenGLNativeWidget::defaultFormat());

	QApplication app(argc,argv);	   
	qRegisterMetaType<MarkerList>("MarkerList");
	qRegisterMetaType<Marker>("Marker");
	qRegisterMetaType<LocalizationParams>("LocalizationParams");

	
	if(!QFile("config.ini").exists()){
		QMessageBox msgBox;
		msgBox.setIcon(QMessageBox::Icon::Critical);
		msgBox.setText("gLocalize config file missing... Exiting.");
		msgBox.setInformativeText("Please add config.ini file in the gLocalize path.");
		msgBox.setStandardButtons(QMessageBox::Ok);
		msgBox.setDefaultButton(QMessageBox::Ok);
			(void)msgBox.exec();
		cout<<"prequit" <<endl;
		app.quit();;
		return -1;
	}


	QSettings *config = new QSettings ("config.ini",QSettings::IniFormat);
	
	/*if in/out dir not found. just exit*/
	if(!QDir(config->value("Path/inDir").toString()).exists() || !QDir(config->value("Path/outDir").toString()).exists()){
		QString userMsg;
		userMsg.clear();
		userMsg.append("Please check config.ini file parameters:\n");
		( QDir(config->value("Path/inDir").toString()).exists() == true? "" : userMsg.append("- Patient directory : [Path]/inDir\n") );
		( QDir(config->value("Path/outDir").toString()).exists() == true? "" : userMsg.append("- Output directory : [Path]/outDir\n") );
	
		QMessageBox msgBox;
		msgBox.setIcon(QMessageBox::Icon::Critical);
		msgBox.setText("gLocalize configuration error... Exiting.");
		msgBox.setInformativeText(userMsg);
		msgBox.setStandardButtons(QMessageBox::Ok);
		msgBox.setDefaultButton(QMessageBox::Ok);

		QSpacerItem* horizonatlSpacer= new QSpacerItem(300,0,QSizePolicy::Minimum,QSizePolicy::Expanding);
		QGridLayout* layout = (QGridLayout*) msgBox.layout();
		layout->addItem(horizonatlSpacer, layout->rowCount(), 0 ,1 ,layout->columnCount());
		
			(void)msgBox.exec();
		cout<<"prequit" <<endl;
		app.quit();
		delete config;
		return -1;
	}
	delete config;


    QFile qss("style.qss");
    if (!qss.open(QFile::ReadOnly)) {
        qWarning() << "Failed to open stylesheet:" << qss.fileName() << qss.errorString();
    } else {
        app.setStyleSheet(qss.readAll());
        qss.close();
    }



	QString loadPath;
	loadPath.clear();

	if(argc==2)
		loadPath = app.arguments().at(1);

	MainWindow* mainW= new MainWindow(loadPath);
    std::cout<< "pre show" <<std::endl;
    mainW->show();
	    return app.exec();





	    // unreachable
}