#include "..\Header\MainWindow.h"
#include "..\Header\OglViewerWidget.h"
#include <QSurfaceFormat>
#include <QMessageBox>
#include <QFileDialog>
#include <QPalette>
#include <QAction>
#include <QSignalMapper>
#include <QFile>
#include <QSizePolicy>
#include <QFont>
#include <QResizeEvent>
#include "..\Header\FileInterface.h"

#define WINDOW_NAME "Mesh Viewer"

MainWindow::MainWindow(QWidget *parent)
	: QMainWindow(parent)
	, ui(new Ui::MainWindowClass)
	, m_curSeverity(0)
	, m_output(new QLabel(this))
{
	ui->setupUi(this);

	setWindowTitle(WINDOW_NAME);
	setWindowIcon(QIcon(":/images/icon.ico"));

	QSurfaceFormat format;
	format.setDepthBufferSize(24);
	QSurfaceFormat::setDefaultFormat(format);

	setupWidgets();

	ui->statusBar->showMessage("MeshViewer by Anakin", 0);

	m_fileInfo += "Filename: -\nMaterials: -\nVertices: -\nTriangle: -\n<detail>No file is open";
}

MainWindow::~MainWindow()
{
	delete ui;
	delete m_output;
}

void MainWindow::openFile()
{
	QString fileName = QFileDialog::getOpenFileName(this, "Open File", "", "Mesh (*.msh)");
	if(!fileName.isEmpty())
		emit loadFile(fileName);
}

void MainWindow::setupWidgets()
{
	OglViewerWidget* viewer = new OglViewerWidget(this);
	setCentralWidget(viewer);

	QAction *openFile = new QAction(QIcon(":/images/toolbar/open.png"), "Open file", this);
	connect(openFile, &QAction::triggered, this, &MainWindow::openFile);
	ui->mainToolBar->addAction(openFile);

	QAction *screenShot = new QAction(QIcon(":/images/toolbar/screenshot.png"), "Screenshot", this);
	connect(screenShot, &QAction::triggered, this, &MainWindow::takeScreenShot);
	ui->mainToolBar->addAction(screenShot);

	ui->mainToolBar->addSeparator();

	QSignalMapper* signalMapper = new QSignalMapper(this);

	QAction *x = new QAction(QIcon(":/images/toolbar/X.png"), "X", this);
	x->setCheckable(true);
	x->setChecked(true);
	ui->mainToolBar->addAction(x);

	QAction *y = new QAction(QIcon(":/images/toolbar/Y.png"), "Y", this);
	y->setCheckable(true);
	y->setChecked(true);
	ui->mainToolBar->addAction(y);

	QAction *z = new QAction(QIcon(":/images/toolbar/Z.png"), "Z", this);
	z->setCheckable(true);
	z->setChecked(true);
	ui->mainToolBar->addAction(z);

	connect(x, SIGNAL(triggered()), signalMapper, SLOT(map()));
	connect(y, SIGNAL(triggered()), signalMapper, SLOT(map()));
	connect(z, SIGNAL(triggered()), signalMapper, SLOT(map()));

	signalMapper->setMapping(x, 1);
	signalMapper->setMapping(y, 2);
	signalMapper->setMapping(z, 3);

	connect(signalMapper, SIGNAL(mapped(int)), viewer, SLOT(changeDirection(int)));

	ui->mainToolBar->addSeparator();

	QAction *wireframe = new QAction(QIcon(":/images/toolbar/wireframe.png"), "Wireframe", this);
	wireframe->setCheckable(true);
	wireframe->setChecked(false);
	connect(wireframe, &QAction::triggered, viewer, &OglViewerWidget::toggleWireframe);
	ui->mainToolBar->addAction(wireframe);

	ui->mainToolBar->addSeparator();

	QAction *fileInfo = new QAction(QIcon(":/images/toolbar/info.png"), "File info", this);
	connect(fileInfo, &QAction::triggered, this, &MainWindow::aboutFile);
	ui->mainToolBar->addAction(fileInfo);

	QAction *help = new QAction(QIcon(":/images/toolbar/about.png"), "Help", this);
	connect(help, &QAction::triggered, this, &MainWindow::aboutTool);
	ui->mainToolBar->addAction(help);

	m_output->setObjectName("output");
	m_output->setStyleSheet("QLabel#output{color : white; min-width: 400px; min-height: 50px;}");
	m_output->setAlignment(Qt::AlignTop);
	m_output->setText("Name: -\nMaterials: -\nVertice: -\nTriangle: -");
	m_output->raise();
	
}

void MainWindow::aboutFile()
{
	QMessageBox* dialog = new QMessageBox(QMessageBox::NoIcon,
		WINDOW_NAME,
		QString(m_fileInfo.left(m_fileInfo.indexOf("<detail>"))),
		QMessageBox::StandardButton::Close,
		this,
		Qt::Dialog | Qt::MSWindowsFixedSizeDialogHint);

	dialog->setStyleSheet("QLabel{min-width: 200px;}");
	dialog->setDetailedText(QString(m_fileInfo.right(m_fileInfo.size() - m_fileInfo.indexOf("<detail>") - 8)));
	dialog->exec();
	delete dialog;
}

void MainWindow::aboutTool()
{
	QFile file(":/files/about.txt");
	file.open(QIODevice::ReadOnly);
	QMessageBox* dialog = new QMessageBox(
		QMessageBox::Question,
		WINDOW_NAME,
		QString(file.readAll()),
		QMessageBox::StandardButton::Close,
		this,
		Qt::Dialog | Qt::MSWindowsFixedSizeDialogHint);

	file.close();

	dialog->exec();

	delete dialog;
}

void MainWindow::takeScreenShot()
{
	QString destination = QFileDialog::getSaveFileName(this, "Save as...", "", "PNG (*.png);; BMP (*.bmp);;TIFF (*.tiff, *.tif);;JPEG (*.jpg *jpeg)");

	OglViewerWidget* viewer = dynamic_cast<OglViewerWidget*>(centralWidget());
	if (!destination.isEmpty() && viewer != NULL)
		viewer->grab().save(destination);
}

void MainWindow::resizeEvent(QResizeEvent * e)
{
	m_output->move(40, e->size().height() - 80);
}

void MainWindow::setFileInfo(QString name, QVector<Material>* materials, int vertices, int triangle)
{
	m_fileInfo = QByteArray("Filename: ");
	m_fileInfo += name;
	m_fileInfo += "\nMaterials: ";
	m_fileInfo += QByteArray::number(materials->size());
	m_fileInfo += "\nVertices: ";
	m_fileInfo += QByteArray::number(vertices);
	m_fileInfo += "\nTriangle: ";
	m_fileInfo += QByteArray::number(triangle);
	m_fileInfo += "<detail>";

	int count(0);
	//TODO: mark not opened textures
	for (auto& it : *materials)
	{
		m_fileInfo += "Material ";
		m_fileInfo += QByteArray::number(count++);
		m_fileInfo += " - ";
		m_fileInfo += it.name;
		m_fileInfo += "\n";
	}

	m_output->setText(m_fileInfo.left(m_fileInfo.indexOf("<detail>")));
}

void MainWindow::printMessage(QString message, int severity)
{
	if (!ui->statusBar->currentMessage().isEmpty() && severity < m_curSeverity)
		return;

	m_curSeverity = severity;
	int time(0);
	QPalette palette;

	switch (severity)
	{
	case 1:
		time = 3000;
		palette.setColor(QPalette::WindowText, Qt::darkYellow);
		break;
	case 2:
		time = 3000;
		palette.setColor(QPalette::WindowText, Qt::red);
		break;
	case 0:
	default:
		time = 2000;
		palette.setColor(QPalette::WindowText, Qt::black);
		break;
	}

	ui->statusBar->setPalette(palette);
	ui->statusBar->showMessage(message, time);
}