/*
    Stanley Designer
    Copyright (C) 2019  Ivan Pelipenko peri4ko@yandex.ru

    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 "qglview_window.h"
#include "renderer.h"
#include "glwidget.h"
#include "gltexture_manager.h"
#include <QGraphicsRectItem>
#include <QImageReader>
#include <QMessageBox>
#include "qad_types.h"


QGLViewWindow::QGLViewWindow(QWidget * parent): QMainWindow(parent), Ui::QGLViewWindow() {
	setupUi(this);
	session.setFile("session_qglview_test.conf");
	session.addEntry(this);
	
	//view->view()->camera()->setPos(QVector3D(2, 2, 2));
	//view->view()->camera()->setAim(QVector3D());
	//view->view()->camera()->flyToDistance(2.);
//	view->setFrameShape(QFrame::NoFrame);
	view->view()->setMouseRotateEnabled(true);
	view->view()->setMouseSelectionEnabled(true);
	view->view()->setSelectionHaloEnabled(true);
	view->view()->setHoverHaloEnabled(true);
	view->view()->setBackColor(Qt::lightGray);
	view->view()->setDepthStart(0.1);
	view->view()->setSelectionMode(Scene::smMultiSelection);

	spinFOV->setValue(view->view()->FOV());
	spinDepthStart->setValue(view->view()->depthStart());
	groupHoverHalo->setChecked(view->view()->isHoverHaloEnabled());
	groupSelectionHalo->setChecked(view->view()->isSelectionHaloEnabled());
	spinHoverHaloFill->setValue(view->view()->hoverHaloFillAlpha());
	spinSelectionHaloFill->setValue(view->view()->selectionHaloFillAlpha());
	colorHoverHalo->setColor(view->view()->hoverHaloColor());
	colorSelectionHalo->setColor(view->view()->selectionHaloColor());
	checkFXAA->setChecked(view->view()->isFeatureEnabled(QGLView::qglFXAA));
	colorBack->setColor(view->view()->backColor());
	colorAmbient->setColor(view->view()->ambientColor());
	checkCameraOrbit->setChecked(view->view()->isCameraOrbit());

	groupShadows->setChecked(view->view()->isFeatureEnabled(QGLView::qglShadowsEnabled));
	groupEyeAccomodation->setChecked(view->view()->isFeatureEnabled(QGLView::qglEyeAccomodationEnabled));
	groupBloom->setChecked(view->view()->isFeatureEnabled(QGLView::qglBloomEnabled));
	groupMotionBlur->setChecked(view->view()->isFeatureEnabled(QGLView::qglMotionBlurEnabled));
	groupReflections->setChecked(view->view()->isFeatureEnabled(QGLView::qglReflectionsEnabled));
	checkSoftShadows->setChecked(view->view()->isFeatureEnabled(QGLView::qglShadowsSoftEnabled));
	groupSSAO->setChecked(view->view()->isFeatureEnabled(QGLView::qglSSAOEnabled));
	spinAccom->setValue(view->view()->feature(QGLView::qglEyeAccomodationTime).toDouble());
	spinAccomMS->setValue(view->view()->feature(QGLView::qglEyeAccomodationMaxSpeed).toDouble());
	checkReflectionsBlur->setChecked(view->view()->isFeatureEnabled(QGLView::qglReflectionsBlur));
	spinShadowmapSize->setValue(view->view()->feature(QGLView::qglShadowsMapSize).toInt());
	spinMotionBlurFactor->setValue(view->view()->feature(QGLView::qglMotionBlurFactor).toDouble());
	spinMotionBlurSteps->setValue(view->view()->feature(QGLView::qglMotionBlurSteps).toInt());
	spinBloomFactor->setValue(view->view()->feature(QGLView::qglBloomFactor).toDouble());
	spinBloomRadius->setValue(view->view()->feature(QGLView::qglBloomRadius).toInt());
	spinBloomThreshold->setValue(view->view()->feature(QGLView::qglBloomThreshold).toDouble());
	spinSSAORadius->setValue(view->view()->feature(QGLView::qglSSAORadius).toInt());
	groupDOF->setChecked(view->view()->isFeatureEnabled(QGLView::qglDepthOfFieldEnabled));
	checkDOFAutoFocus->setChecked(view->view()->isFeatureEnabled(QGLView::qglDepthOfFieldAutoFocusEnabled));
	spinDOFFocus->setValue(view->view()->feature(QGLView::qglDepthOfFieldFocus).toDouble());
	spinDOFDiaphragm->setValue(view->view()->feature(QGLView::qglDepthOfFieldDiaphragm).toDouble());
	spinDOFSpeed->setValue(view->view()->feature(QGLView::qglDepthOfFieldAutoFocusSpeed).toDouble());

	view->view()->start(-1);
	startTimer(1000/60);

	connect(view->view(), SIGNAL(selectionChanged()), this, SLOT(selectionChanged()));
	connect(view->view(), SIGNAL(keyEvent(Qt::Key, Qt::KeyboardModifiers)), this, SLOT(view_keyEvent(Qt::Key, Qt::KeyboardModifiers)));
	//connect(matEditor, SIGNAL(changed()), this, SLOT(materialChanged()));
	sceneTree->assignQGLView(view->view());
	matEditor->assignQGLView(view->view());
	objectEditor->assignQGLView(view->view());
	primitiveEditor->assignQGLView(view->view());

	session.load();

	//loadFile("axis.DAE.qgl");
	//matEditor->setMaterial(const_cast<ObjectBase*>(view->view()->scene()->rootObject()->child(0))->material());
	/*Scene * sc = loadScene("truck.obj");
	//view->view()->scene()->addScene(sc);
	sc->rootObject()->moveY(-8);
	for (int i = 0; i < 7; ++i) {
		sc->rootObject()->moveY(2);
		view->view()->scene()->addScene(sc);
	}
	//view->view()->scene()->dump();
	delete sc;*/
}


QGLViewWindow::~QGLViewWindow() {
	session.save();
	//delete ps;
}


void QGLViewWindow::changeEvent(QEvent * e) {
	QMainWindow::changeEvent(e);
	if (e->type() == QEvent::LanguageChange) {
		retranslateUi(this);
		return;
	}
}


void QGLViewWindow::timerEvent(QTimerEvent * ) {
	//static double t = 0.;
	//((RendererSimple*)(view->view()->renderer()))->mpos = view->view()->mapFromGlobal(QCursor::pos());
	statusBar()->showMessage(QString("FPS: %1").arg(QString::number(view->view()->currentFPS(), 'f', 2)));
}


void QGLViewWindow::loadFile(const QString & path, bool import) {
	prev_path = path;
	QApplication::setOverrideCursor(Qt::WaitCursor);
	QFileInfo fi(path);
	Scene * s = nullptr;
	if (fi.suffix().toLower() == "qgl") s = loadFromQGLFile(path);
	else s = loadScene(path);
	QApplication::restoreOverrideCursor();
	if (!s) {
		QMessageBox::critical(this, "Import", "Can`t load " + path + "!");
		return;
	}
	s->setName(fi.baseName());
	if (import) view->scene()->addScene(s);
	else {
		TextureManager::clearSearchPathes();
		view->scene()->assignFrom(s);
		view->view()->focusOn(view->scene()->boundingBox());
	}
	TextureManager::addSearchPath(fi.absoluteDir().path());
	delete s;
}


void QGLViewWindow::selectionChanged() {
	ObjectBase * sel_obj = view->view()->selectedObject();
	labelName->setText(sel_obj ? sel_obj->name() : "");
	/**if (cur == 0) box->hide();
	else {
		box->setScale(cur->boundingBox().size());
		box->setPos(cur->boundingBox().pos());
		Box3D b = cur->boundingBox().movedTo(-cur->boundingBox().center());
		b.z = -b.z - b.height;
		ps->setEmitterRect(b);
		cur->addChild(box);
		box->show();
	}*/
	//qDebug() << sel_obj->boundingBox();
}


void QGLViewWindow::on_actionReset_triggered() {
	///view->view()->removeObject(axis, false);
	view->view()->scene()->destroy();
	///view->view()->addObject(axis);
}


void QGLViewWindow::on_actionImport_triggered() {
	QStringList fl = QFileDialog::getOpenFileNames(this, "Select files", prev_path, "Supported types(*.qgl *.ase *.3ds *.obj *.dae);;"
																					"QGLView(*.qgl);;"
																					"Ascii Scene Export(*.ase);;"
																					"3D Studio(*.3ds);;"
																					"Wavefront OBJ(*.obj);;"
																					"Collada(*.dae)");
	if (fl.isEmpty()) return;
	prev_path = fl.back();
	foreach (QString f, fl)
		loadFile(f, true);
}


void QGLViewWindow::on_actionSave_triggered() {
	QString f = QFileDialog::getSaveFileName(this, "Select file", prev_path, "QGLView(*.qgl)");
	if (f.isEmpty()) return;
	if (f.right(4).toLower() != ".qgl")
		f += ".qgl";
	prev_path = f;
	QApplication::setOverrideCursor(Qt::WaitCursor);
	saveToQGLFile(f, view->scene());
	QApplication::restoreOverrideCursor();
}


void QGLViewWindow::on_actionSaveSelected_triggered() {
	ObjectBase * sel_obj = view->view()->selectedObject();
	if (!sel_obj) return;
	QString f = QFileDialog::getSaveFileName(this, "Select file", prev_path, "QGLView(*.qgl)");
	if (f.isEmpty()) return;
	if (f.right(4).toLower() != ".qgl")
		f += ".qgl";
	prev_path = f;
	QApplication::setOverrideCursor(Qt::WaitCursor);
	///saveToQGLFile(f, sel_obj);
	QApplication::restoreOverrideCursor();
}


void QGLViewWindow::on_actionOpen_triggered() {
	QString f = QFileDialog::getOpenFileName(this, "Select file", prev_path, "Supported types(*.qgl *.ase *.3ds *.obj *.dae);;"
																			"QGLView(*.qgl);;"
																			"Ascii Scene Export(*.ase);;"
																			"3D Studio(*.3ds);;"
																			"Wavefront OBJ(*.obj);;"
																			"Collada(*.dae)");
	if (f.isEmpty()) return;
	prev_path = f;
	loadFile(f);
}


void QGLViewWindow::view_keyEvent(Qt::Key k, Qt::KeyboardModifiers m) {
	//qDebug() << k;
	double spd = 0.2;
	if (m.testFlag(Qt::ShiftModifier))
		spd = 0.5;
	switch (k) {
	case Qt::Key_W: view->view()->camera()->moveForward(spd); break;
	case Qt::Key_S: view->view()->camera()->moveBackward(spd); break;
	case Qt::Key_A: view->view()->camera()->moveLeft(spd); break;
	case Qt::Key_D: view->view()->camera()->moveRight(spd); break;
	default: break;
	}
}
\

void QGLViewWindow::on_pushButton_clicked() {
	//view->view()->removeLight(view->view()->lightsCount() - 1);
	//setWindowTitle(QString::number(view->view()->lightsCount()));
	//QVector3D wp = view->view()->light(0)->worldPos();
	//view->view()->camera()->setPos(wp);
	//view->view()->camera()->setAim(wp + (view->view()->light(0)->worldTransform() * QVector4D(view->view()->light(0)->direction)).toVector3D()*100);
}


void QGLViewWindow::on_pushButton_3_clicked() {
	/*ObjectBaseList ol = view->view()->objects(true);
	qDebug() << ol.size();
	foreach (ObjectBase * i, ol) {
		//i->VBO().rebuffer();
	}*/
}


void QGLViewWindow::on_actionAdd_plane_triggered() {
	ObjectBase * o = new ObjectBase(Primitive::plane());
	o->setName("plane");
	view->addObject(o->clone());
	delete o;
}


void QGLViewWindow::on_actionAdd_cube_triggered() {
	ObjectBase * o = new ObjectBase(Primitive::cube());
	o->setName("cube");
	view->addObject(o->clone());
	delete o;
}


void QGLViewWindow::on_actionAdd_sphere_triggered() {
	int seg_xy = 16, seg_z = 16;
	seg_xy = QInputDialog::getInt(this, "New sphere", "XY segments:", seg_xy, 1, 200);
	seg_z  = QInputDialog::getInt(this, "New sphere",  "Z segments:", seg_z , 1, 200);
	ObjectBase * o = new ObjectBase(Primitive::ellipsoid(seg_xy, seg_z));
	o->setName("sphere");
	view->addObject(o->clone());
	delete o;
}


void QGLViewWindow::on_actionArrow_triggered(bool on) {
	actionArrow ->setChecked(true);
	actionMove  ->setChecked(false);
	actionRotate->setChecked(false);
	actionScale ->setChecked(false);
	view->view()->setCurrentAction(RendererService::haNoAction);
}


void QGLViewWindow::on_actionMove_triggered(bool on) {
	actionArrow ->setChecked(false);
	actionMove  ->setChecked(true);
	actionRotate->setChecked(false);
	actionScale ->setChecked(false);
	view->view()->setCurrentAction(RendererService::haMove);
}


void QGLViewWindow::on_actionRotate_triggered(bool on) {
	actionArrow ->setChecked(false);
	actionMove  ->setChecked(false);
	actionRotate->setChecked(true);
	actionScale ->setChecked(false);
	view->view()->setCurrentAction(RendererService::haRotate);
}


void QGLViewWindow::on_actionScale_triggered(bool on) {
	actionArrow ->setChecked(false);
	actionMove  ->setChecked(false);
	actionRotate->setChecked(false);
	actionScale ->setChecked(true);
	view->view()->setCurrentAction(RendererService::haScale);
}