#include "toonz/scriptbinding_renderer.h"
#include "toonz/scriptbinding_scene.h"
#include "toonz/scriptbinding_level.h"
#include "toonz/txsheet.h"
#include "toonz/txshsimplelevel.h"

#include "toonz/toonzscene.h"
#include "trenderer.h"
#include "toonz/scenefx.h"
#include "toonz/sceneproperties.h"
#include "toonz/tcamera.h"
#include "toutputproperties.h"
#include <QEventLoop>
#include <QWaitCondition>

#include "timagecache.h"

namespace TScriptBinding
{

//=======================================================

QScriptValue getScene(QScriptContext *context, const QScriptValue &sceneArg, Scene *&scene)
{
	scene = qscriptvalue_cast<Scene *>(sceneArg);
	if (!scene)
		return context->throwError(QObject::tr("First argument must be a scene : %1").arg(sceneArg.toString()));
	if (scene->getToonzScene() == 0)
		return context->throwError(QObject::tr("Can't render empty scene"));
	return QScriptValue();
}

void valueToIntList(const QScriptValue &arr, QList<int> &list)
{
	list.clear();
	if (arr.isArray()) {
		int length = arr.property("length").toInteger();
		for (int i = 0; i < length; i++)
			list.append(arr.property(i).toInteger());
	}
}

//=======================================================

class Renderer::Imp : public TRenderPort
{
public:
	TScriptBinding::Image *m_outputImage;
	TScriptBinding::Level *m_outputLevel;
	TPointD m_cameraDpi;

	bool m_completed;
	TRenderer m_renderer;

	QList<int> m_columnList;
	QList<int> m_frameList;

	Imp() : m_completed(false)
	{
		m_renderer.setThreadsCount(1);
		m_renderer.addPort(this);
		m_outputImage = 0;
		m_outputLevel = 0;
	}

	~Imp()
	{
	}

	void setRenderArea(ToonzScene *scene)
	{
		TDimension cameraRes = scene->getCurrentCamera()->getRes();
		double rx = cameraRes.lx * 0.5, ry = cameraRes.ly * 0.5;
		TRectD renderArea(-rx, -ry, rx, ry);
		TRenderPort::setRenderArea(renderArea);
		m_cameraDpi = scene->getCurrentCamera()->getDpi();
	}

	void enableColumns(ToonzScene *scene, QList<bool> &oldStatus)
	{
		if (m_columnList.empty())
			return;
		QList<bool> newStatus;
		TXsheet *xsh = scene->getXsheet();
		for (int i = 0; i < xsh->getColumnCount(); i++) {
			oldStatus.append(xsh->getColumn(i)->isPreviewVisible());
			newStatus.append(false);
		}
		foreach (int i, m_columnList) {
			if (0 <= i && i < xsh->getColumnCount())
				newStatus[i] = true;
		}
		for (int i = 0; i < newStatus.length(); i++) {
			xsh->getColumn(i)->setPreviewVisible(newStatus[i]);
		}
	}

	void restoreColumns(ToonzScene *scene, const QList<bool> &oldStatus)
	{
		TXsheet *xsh = scene->getXsheet();
		for (int i = 0; i < oldStatus.length(); i++) {
			xsh->getColumn(i)->setPreviewVisible(oldStatus[i]);
		}
	}

	std::vector<TRenderer::RenderData> *makeRenderData(ToonzScene *scene, const std::vector<int> &rows)
	{
		TRenderSettings settings = scene
									   ->getProperties()
									   ->getOutputProperties()
									   ->getRenderSettings();

		QList<bool> oldColumnStates;
		enableColumns(scene, oldColumnStates);

		std::vector<TRenderer::RenderData> *rds = new std::vector<TRenderer::RenderData>;
		for (int i = 0; i < (int)rows.size(); i++) {
			double frame = rows[i];
			TFxP sceneFx = buildSceneFx(scene, frame, 1, false);
			TFxPair fxPair;
			fxPair.m_frameA = sceneFx;
			rds->push_back(TRenderer::RenderData(frame, settings, fxPair));
		}

		restoreColumns(scene, oldColumnStates);
		return rds;
	}

	void render(std::vector<TRenderer::RenderData> *rds)
	{
		QMutex mutex;
		mutex.lock();
		m_completed = false;
		m_renderer.startRendering(rds);

		while (!m_completed) {
			QEventLoop loop;
			loop.processEvents();
			QWaitCondition waitCondition;
			waitCondition.wait(&mutex, 100);
		}
		mutex.unlock();
	}

	void renderFrame(ToonzScene *scene, int row, Image *outputImage)
	{
		setRenderArea(scene);
		std::vector<int> rows;
		rows.push_back(row);
		m_outputImage = outputImage;
		m_outputLevel = 0;
		render(makeRenderData(scene, rows));
	}

	void renderScene(ToonzScene *scene, Level *outputLevel)
	{
		setRenderArea(scene);
		std::vector<int> rows;
		if (m_frameList.empty()) {
			for (int i = 0; i < scene->getFrameCount(); i++)
				rows.push_back(i);
		} else {
			for (int i = 0; i < m_frameList.length(); i++)
				rows.push_back(m_frameList[i]);
		}
		m_outputImage = 0;
		m_outputLevel = outputLevel;
		render(makeRenderData(scene, rows));
	}

	void onRenderRasterStarted(const RenderData &renderData)
	{
		int a = 1;
	}
	void onRenderRasterCompleted(const RenderData &renderData)
	{
		TRasterP outputRaster = renderData.m_rasA;
		TRasterImageP img(outputRaster->clone());
		img->setDpi(m_cameraDpi.x, m_cameraDpi.y);
		if (m_outputImage)
			m_outputImage->setImg(img);
		else if (m_outputLevel) {
			std::vector<std::string> ids;
			for (int i = 0; i < (int)renderData.m_frames.size(); i++) {
				TFrameId fid((int)(renderData.m_frames[i]) + 1);
				m_outputLevel->setFrame(fid, img);
				std::string id = m_outputLevel->getSimpleLevel()->getImageId(fid);
				ids.push_back(id);
			}
			img = TImageP();
			for (int i = 0; i < (int)ids.size(); i++)
				TImageCache::instance()->compress(ids[i]);
		}
	}
	void onRenderFailure(const RenderData &renderData, TException &e)
	{
	}
	void onRenderFinished()
	{
		m_completed = true;
	}
}; // class RenderEngine

//=======================================================

Renderer::Renderer()
	: m_imp(new Imp())
{
}

Renderer::~Renderer()
{
}

QScriptValue Renderer::ctor(QScriptContext *context, QScriptEngine *engine)
{
	QScriptValue r = create(engine, new Renderer());
	r.setProperty("frames", engine->newArray());
	r.setProperty("columns", engine->newArray());
	return r;
}

QScriptValue Renderer::toString()
{
	return "Renderer";
}

QScriptValue Renderer::renderScene(const QScriptValue &sceneArg)
{
	QScriptValue obj = context()->thisObject();
	valueToIntList(obj.property("frames"), m_imp->m_frameList);
	valueToIntList(obj.property("columns"), m_imp->m_columnList);

	Scene *scene = 0;
	QScriptValue err = getScene(context(), sceneArg, scene);
	if (err.isError())
		return err;

	Level *outputLevel = new Level();
	// engine()->collectGarbage();
	m_imp->renderScene(scene->getToonzScene(), outputLevel);
	return create(engine(), outputLevel);
	/*
    for(int row=0;row<scene->getToonzScene()->getFrameCount();row++)
    {
      engine()->collectGarbage();
      TImageP img = renderEngine.renderFrame(row);
      if(img)
      {
        QScriptValue frame = create(new Image(img));
        QScriptValueList args; args << QString::number(row+1) << frame;
        newLevel.property("setFrame").call(newLevel, args);
      }
      else
      {
        return context()->throwError(tr("Render failed"));
      }
    }
    return newLevel;
    */
}

Q_INVOKABLE QScriptValue Renderer::renderFrame(const QScriptValue &sceneArg, int frame)
{
	QScriptValue obj = context()->thisObject();
	valueToIntList(obj.property("columns"), m_imp->m_columnList);

	Scene *scene = 0;
	QScriptValue err = getScene(context(), sceneArg, scene);
	if (err.isError())
		return err;

	Image *outputImage = new Image();
	engine()->collectGarbage();
	m_imp->renderFrame(scene->getToonzScene(), frame, outputImage);
	return create(engine(), outputImage);

	/*
    Scene *scene = 0;
    QScriptValue err = getScene(context(), sceneArg, scene);
    if(err.isError()) return err;




    engine()->collectGarbage();

    RenderEngine renderEngine(scene->getToonzScene());
    TImageP img = renderEngine.renderFrame(frame);

    for(int i=0;i<oldStatus.length();i++)
      xsh->getColumn(i)->setPreviewVisible(oldStatus[i]);

    if(img)
    {
      return create(engine(), new Image(img));
    }    
    else
    {
      return context()->throwError(tr("Render failed"));
    }
    */
}

/*
  QScriptValue Renderer::renderColumns(const QScriptValue &sceneArg, const QScriptValue &columnListArg)
  {
    Scene *scene = 0;
    QScriptValue err = getScene(context(), sceneArg, scene);
    if(err.isError()) return err;

    QList<bool> oldStatus;
    QList<bool> newStatus;
    TXsheet *xsh = scene->getToonzScene()->getXsheet();
    for(int i=0;i<xsh->getColumnCount();i++)
    {
      oldStatus.append(xsh->getColumn(i)->isPreviewVisible());
      newStatus.append(false);
    }

    if(!columnListArg.isArray())
      return context()->throwError(tr("Second argument must be an array of column indices : ").arg(columnListArg.toString()));
    int m = columnListArg.property("length").toInt32();
    for(quint32 i=0;i<(int)m;i++)
    {
      QScriptValue c = columnListArg.property(i);
      if(!c.isNumber())
      {
        return context()->throwError(tr("Second argument must be an array of integer numbers : %1 (#%2)")
          .arg(columnListArg.toString())
          .arg(i));
      }
      int index = c.toInteger();
      if(0<=index && index<newStatus.length()) newStatus[index] = true;
    }
    for(int i=0;i<newStatus.length();i++)
      xsh->getColumn(i)->setPreviewVisible(newStatus[i]);

    err = QScriptValue();
    QScriptValue newLevel = create(new Level());
    RenderEngine renderEngine(scene->getToonzScene());
    for(int row=0;row<scene->getToonzScene()->getFrameCount();row++)
    {
      engine()->collectGarbage();
      TImageP img = renderEngine.renderFrame(row);
      if(img)
      {
        QScriptValue frame = create(new Image(img));
        QScriptValueList args; args << QString::number(row+1) << frame;
        newLevel.property("setFrame").call(newLevel, args);
      }
      else
      {
        err = context()->throwError(tr("Render failed"));
        break;
      }
    }

    for(int i=0;i<oldStatus.length();i++)
      xsh->getColumn(i)->setPreviewVisible(oldStatus[i]);
    if(err.isError()) return err;
    else return newLevel;
  }
  */

void Renderer::dumpCache()
{
	TImageCache::instance()->outputMap(0, "C:\\Users\\gmt\\PLI\\cache.log");
}

} // namespace TScriptBinding