#include "toonz/scriptbinding_level.h"
#include "toonz/scriptbinding_files.h"
#include <QScriptEngine>
#include "timage_io.h"
#include "tlevel_io.h"
#include "tlevel.h"
#include "toonz/tcenterlinevectorizer.h"
#include "toonz/tcamera.h"
#include "trop.h"
#include "trasterimage.h"
#include "ttoonzimage.h"
#include "tvectorimage.h"
#include "tpalette.h"
#include "tofflinegl.h"
#include "tvectorrenderdata.h"
#include "tgeometry.h"
#include "toonz/stage.h"
#include "toonz/tcamera.h"
#include "toonz/txshleveltypes.h"
#include "toonz/levelproperties.h"
#include "toonz/toonzscene.h"
#include "toonz/txshsimplelevel.h"
#include "toonz/levelset.h"
#include "tfiletype.h"
#include "tsystem.h"
#include <QRegExp>
#include <QColor>
#include "tfiletype.h"

namespace TScriptBinding
{

Level::Level()
	: m_sl(0), m_type(NO_XSHLEVEL), m_scene(new ToonzScene()), m_sceneOwner(true)
{
}

Level::Level(TXshSimpleLevel *sl)
	: m_sl(sl), m_type(sl->getType()), m_scene(sl->getScene()), m_sceneOwner(false)
{
	sl->addRef();
}

Level::~Level()
{
	if (m_sceneOwner)
		delete m_scene;
	if (m_sl)
		m_sl->release();
}

QScriptValue Level::ctor(QScriptContext *context, QScriptEngine *engine)
{
	Level *level = new Level();
	QScriptValue obj = engine->newQObject(level, QScriptEngine::AutoOwnership);
	if (context->argumentCount() == 1) {
		return obj.property("load").call(obj, context->argumentsObject());
	}
	return obj;
}

QScriptValue Level::toString()
{
	QString info = "(";
	QString comma = "";
	if (getName() != "") {
		info.append(comma).append(getName());
		comma = ", ";
	}
	info.append(comma).append(tr("%1 frames").arg(getFrameCount()));
	info.append(")");
	if (m_type == PLI_XSHLEVEL)
		return QString("Vector level %1").arg(info);
	else if (m_type == TZP_XSHLEVEL)
		return QString("Toonz level %1").arg(info);
	else if (m_type == NO_XSHLEVEL)
		return QString("Empty level");
	else if (m_type == OVL_XSHLEVEL)
		return QString("Raster level %1").arg(info);
	else
		return QString("Level %1").arg(info);
}

QString Level::getType() const
{
	if (m_type == NO_XSHLEVEL)
		return "Empty";
	else if (m_type == PLI_XSHLEVEL)
		return "Vector";
	else if (m_type == TZP_XSHLEVEL)
		return "ToonzRaster";
	else if (m_type == OVL_XSHLEVEL)
		return "Raster";
	else
		return "Unknown";
}

int Level::getFrameCount() const
{
	return m_sl ? m_sl->getFrameCount() : 0;
}

QString Level::getName() const
{
	return m_sl ? QString::fromStdWString(m_sl->getName()) : "";
}

void Level::setName(const QString &name)
{
	if (m_sl)
		m_sl->setName(name.toStdWString());
}

QScriptValue Level::getPath() const
{
	if (m_sl) {
		FilePath *result = new FilePath(m_sl->getPath());
		return result->create<FilePath>(engine());
	} else
		return QScriptValue();
	return m_sl ? QString::fromStdWString(m_sl->getName()) : "";
}

void Level::setPath(const QScriptValue &pathArg)
{
	TFilePath fp;
	FilePath *filePath = qscriptvalue_cast<FilePath *>(pathArg);
	if (filePath)
		fp = filePath->getToonzFilePath();
	else if (pathArg.isString())
		fp = TFilePath(pathArg.toString().toStdString());
	else
		context()->throwError(tr("Bad argument (%1). It should be FilePath or string").arg(pathArg.toString()));
	if (m_sl) {
		m_sl->setPath(fp);
		try {
			m_sl->load();
		} catch (...) {
			context()->throwError(tr("Exception loading level (%1)").arg(QString::fromStdWString(fp.getWideString())));
		}
	}
}

QScriptValue Level::load(const QScriptValue &fpArg)
{
	if (m_sl) {
		m_scene->getLevelSet()->removeLevel(m_sl, true);
		m_sl->release();
		m_sl = 0;
	}

	// get the path
	TFilePath fp;
	QScriptValue err = checkFilePath(context(), fpArg, fp);
	if (err.isError())
		return err;
	QString fpStr = fpArg.toString();

	try {
		if (!TSystem::doesExistFileOrLevel(fp)) {
			return context()->throwError(tr("File %1 doesn't exist").arg(fpStr));
		}
		TFileType::Type fileType = TFileType::getInfo(fp);
		if (TFileType::isVector(fileType))
			m_type = PLI_XSHLEVEL;
		else if (0 != (fileType & TFileType::CMAPPED_IMAGE))
			m_type = TZP_XSHLEVEL;
		else if (0 != (fileType & TFileType::RASTER_IMAGE))
			m_type = OVL_XSHLEVEL;
		else {
			return context()->throwError(tr("File %1 is unsupported").arg(fpStr));
		}
		TXshLevel *xl = m_scene->loadLevel(fp);
		if (xl) {
			m_sl = xl->getSimpleLevel();
			m_sl->addRef();
		}
		return context()->thisObject();
	} catch (...) {
		return context()->throwError(tr("Exception reading %1").arg(fpStr));
	}
}

QScriptValue Level::save(const QScriptValue &fpArg)
{
	if (getFrameCount() == 0) {
		return context()->throwError(tr("Can't save an empty level"));
	}

	// get the path
	TFilePath fp;
	QScriptValue err = checkFilePath(context(), fpArg, fp);
	if (err.isError())
		return err;
	QString fpStr = fpArg.toString();

	// handle conversion (if it is needed and possible)
	TFileType::Type fileType = TFileType::getInfo(fp);

	bool isCompatible = false;
	if (TFileType::isFullColor(fileType)) {
		if (m_sl->getType() == OVL_XSHLEVEL)
			isCompatible = true;
	} else if (TFileType::isVector(fileType)) {
		if (m_sl->getType() == PLI_XSHLEVEL)
			isCompatible = true;
	} else if (fileType & TFileType::CMAPPED_IMAGE) {
		if (m_sl->getType() == TZP_XSHLEVEL)
			isCompatible = true;
	} else {
		return context()->throwError(tr("Unrecognized file type :").arg(fpStr));
	}
	if (!isCompatible) {
		return context()->throwError(tr("Can't save a %1 level to this file type : %2").arg(getType()).arg(fpStr));
	}

	try {
		m_sl->save(fp);
	} catch (TSystemException se) {
		return context()->throwError(tr("Exception writing %1").arg(QString::fromStdWString(se.getMessage())));
	}
	return context()->thisObject();
}

TFrameId Level::getFid(const QScriptValue &arg, QString &err)
{
	if (arg.isNumber() || arg.isString()) {
		QString s = arg.toString();
		QRegExp re("(-?\\d+)(\\w?)");
		if (re.exactMatch(s)) {
			int d = re.cap(1).toInt();
			QString c = re.cap(2);
			TFrameId fid;
			if (c.length() == 1)
#if QT_VERSION >= 0x050500
				fid = TFrameId(d, c[0].unicode());
#else
				fid = TFrameId(d, c[0].toAscii());
#endif
			else
				fid = TFrameId(d);
			err = "";
			return fid;
		}
	}
	err = QObject::tr("Argument '%1' does not look like a FrameId").arg(arg.toString());
	return TFrameId();
}

TImageP Level::getImg(const TFrameId &fid)
{
	if (m_sl)
		return m_sl->getFrame(fid, false);
	else
		return TImageP();
}

QScriptValue Level::getFrame(const QScriptValue &fidArg)
{
	if (getFrameCount() == 0)
		return context()->throwError("An empty level has no frames");
	QString err;
	TFrameId fid = getFid(fidArg, err);
	if (err != "")
		return context()->throwError(err);

	TImageP content = m_sl->getFrame(fid, false);
	if (content) {
		Image *img = new Image(content.getPointer());
		return create(img);
	} else {
		return QScriptValue();
	}
}

QScriptValue Level::getFrameByIndex(const QScriptValue &indexArg)
{
	if (getFrameCount() == 0)
		return context()->throwError("An empty level has no frames");
	if (!indexArg.isNumber()) {
		return context()->throwError(tr("frame index (%1) must be a number").arg(indexArg.toString()));
	}
	int index = indexArg.toInteger();
	if (index < 0 || index >= getFrameCount()) {
		return context()->throwError(tr("frame index (%1) is out of range (0-%2)").arg(index).arg(getFrameCount() - 1));
	}
	TFrameId fid = m_sl->index2fid(index);
	TImageP content = m_sl->getFrame(fid, false);
	if (content) {
		Image *img = new Image(content.getPointer());
		return create(img);
	} else {
		return QScriptValue();
	}
}

// TODO: chiamare setFrame(const TFrameId &fid, const TImageP &img)
QScriptValue Level::setFrame(const QScriptValue &fidArg, const QScriptValue &imageArg)
{
	QString err;
	TFrameId fid = getFid(fidArg, err);
	if (err != "")
		return context()->throwError(err);
	Image *img = qscriptvalue_cast<Image *>(imageArg);
	if (!img) {
		return context()->throwError(tr("second argument (%1) is not an image").arg(imageArg.toString()));
	}

	QString imgType = img->getType();
	int levelType = NO_XSHLEVEL;
	if (imgType == "ToonzRaster")
		levelType = TZP_XSHLEVEL;
	else if (imgType == "Raster")
		levelType = OVL_XSHLEVEL;
	else if (imgType == "Vector")
		levelType = PLI_XSHLEVEL;
	else {
		return context()->throwError(tr("can not insert a %1 image into a level").arg(imgType));
	}

	if (m_type == NO_XSHLEVEL) {
		m_type = levelType;
		TXshLevel *xl = m_scene->createNewLevel(levelType);
		m_sl = xl->getSimpleLevel();
		m_sl->addRef();
		m_sl->setPalette(img->getImg()->getPalette());
		if (levelType != PLI_XSHLEVEL) {
			LevelProperties *lprop = m_sl->getProperties();
			lprop->setDpiPolicy(LevelProperties::DP_ImageDpi);
			int xres = img->getWidth();
			int yres = img->getHeight();
			double dpi = img->getDpi();
			lprop->setDpi(dpi);
			lprop->setImageDpi(TPointD(dpi, dpi));
			lprop->setImageRes(TDimension(xres, yres));
			// lprop->setHasAlpha(true);
		}
	} else if (m_type != levelType) {
		return context()->throwError(tr("can not insert a %1 image to a %2 level").arg(imgType).arg(getType()));
	}
	if (m_sl->getFrameCount() == 0)
		m_sl->setPalette(img->getImg()->getPalette());

	m_sl->setFrame(fid, img->getImg());
	m_sl->setDirtyFlag(true);
	return context()->thisObject();
}

QScriptValue Level::getFrameIds()
{
	QList<TFrameId> fids;
	getFrameIds(fids);
	QScriptValue result = engine()->newArray();
	quint32 index = 0;
	foreach (TFrameId fid, fids) {
		QString fidStr = QString::fromStdString(fid.expand());
		result.setProperty(index++, fidStr);
	}
	return result;
}

void Level::getFrameIds(QList<TFrameId> &result)
{
	if (getFrameCount() > 0) {
		std::vector<TFrameId> fids;
		m_sl->getFids(fids);
		for (std::vector<TFrameId>::iterator it = fids.begin(); it != fids.end(); ++it) {
			result.append(*it);
		}
	}
}

int Level::setFrame(const TFrameId &fid, const TImageP &img)
{
	TImage::Type imgType = img->getType();
	int levelType = NO_XSHLEVEL;
	if (imgType == TImage::TOONZ_RASTER)
		levelType = TZP_XSHLEVEL;
	else if (imgType == TImage::RASTER)
		levelType = OVL_XSHLEVEL;
	else if (imgType == TImage::VECTOR)
		levelType = PLI_XSHLEVEL;
	else {
		return -1;
	}

	if (m_type == NO_XSHLEVEL) {
		m_type = levelType;
		TXshLevel *xl = m_scene->createNewLevel(levelType);
		m_sl = xl->getSimpleLevel();
		m_sl->addRef();
		m_sl->setPalette(img->getPalette());
		if (levelType != PLI_XSHLEVEL) {
			LevelProperties *lprop = m_sl->getProperties();
			lprop->setDpiPolicy(LevelProperties::DP_ImageDpi);
			int xres = 0, yres = 0;
			double dpix = 0, dpiy = 0;
			if (TRasterImageP ri = img) {
				if (ri->getRaster()) {
					TDimension size = ri->getRaster()->getSize();
					xres = size.lx;
					yres = size.ly;
					ri->getDpi(dpix, dpiy);
				}
			} else if (TToonzImageP ti = img) {
				if (ti->getRaster()) {
					TDimension size = ri->getRaster()->getSize();
					xres = size.lx;
					yres = size.ly;
					ri->getDpi(dpix, dpiy);
				}
			}
			lprop->setDpi(dpix);
			lprop->setImageDpi(TPointD(dpix, dpiy));
			lprop->setImageRes(TDimension(xres, yres));
			// lprop->setHasAlpha(true);
		}
	} else if (m_type != levelType) {
		return -2;
	}
	if (m_sl->getFrameCount() == 0)
		m_sl->setPalette(img->getPalette());
	m_sl->setFrame(fid, img);
	m_sl->setDirtyFlag(true);
	return 1;
}

} // namespace TScriptBinding