#include "moviegenerator.h"

#include "timage.h"
#include "tpalette.h"
#include "tvectorimage.h"
#include "trasterimage.h"
#include "tlevel_io.h"
#include "tvectorrenderdata.h"
#include "tcolorstyles.h"
#include "tofflinegl.h"
#include "tsop.h"
#include "tcolorfunctions.h"
#include "tfilepath_io.h"
#include "toutputproperties.h"
#include "formatsettingspopups.h"
#include "tsystem.h"

#include "toonz/toonzscene.h"
#include "toonz/txsheet.h"
#include "toonz/txshcolumn.h"
#include "toonz/sceneproperties.h"
#include "toonz/onionskinmask.h"
#include "toonz/tstageobject.h"
#include "toonz/dpiscale.h"
#include "toonz/stage.h"
#include "toonz/stage2.h"
#include "toonz/stagevisitor.h"
#include "toonz/stageplayer.h"
#include "toonz/tcamera.h"
#include "toonz/preferences.h"
#include "toonz/trasterimageutils.h"

#include "tapp.h"
#include "toonz/tframehandle.h"

#ifdef MACOSX
namespace {
// spostare magari in misc;
// ATTENZIONE: cosi' com'e' il codice e' SBAGLITO. Controllare. Inoltre non si
// capisce
// perche' e' sotto ifdef
void checkAndCorrectPremultipliedImage(TRaster32P ras) {
  const int lx = ras->getLx();
  for (int y = 0; y < ras->getLy(); y++) {
    TPixel32 *pix    = ras->pixels(y);
    TPixel32 *endPix = pix + lx;
    while (pix < endPix) {
      if (pix->r > pix->m) pix->r = pix->m;
      if (pix->g > pix->m) pix->g = pix->m;
      if (pix->b > pix->m) pix->b = pix->m;
      ++pix;
    }
  }
}
}
#endif

//=============================================================================
// MovieGenerator::Imp
//-----------------------------------------------------------------------------

class MovieGenerator::Imp {
public:
  TFilePath m_filepath;
  MovieGenerator::Listener *m_listener;
  TDimension m_cameraSize;
  TPixel32 m_bgColor;
  double m_fps;
  bool m_valid;
  IntPair m_renderRange;
  bool m_useMarkers;
  int m_sceneCount;
  int m_columnIndex;
  OnionSkinMask m_osMask;

  Imp(const TFilePath &fp, const TDimension cameraSize, double fps)
      : m_filepath(fp)
      , m_listener(0)
      , m_cameraSize(cameraSize)
      , m_bgColor(TPixel32::White)
      , m_fps(fps)
      , m_valid(false)
      , m_renderRange(0, -1)
      , m_useMarkers(false)
      , m_sceneCount(1)
      , m_columnIndex(-1)
      , m_osMask() {}
  virtual ~Imp() {}

  virtual void startScene(const ToonzScene &scene, int r) = 0;
  virtual void addSoundtrack(const ToonzScene &scene, int frameOffset,
                             int sceneFrameCount) = 0;
  virtual bool addFrame(ToonzScene &scene, int r, bool isLast) = 0;
  virtual void close() = 0;
};

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

//
// AlphaChecker controlla se, sulla base dei parametri, viene utilizzato
// il canale di trasparenza (se la proprieta' booleana Alpha Channel esiste
// e vale true, oppure la "Resolution" vale L"32 bits"
//
class AlphaChecker final : public TProperty::Visitor {
  bool m_alphaEnabled;

public:
  AlphaChecker() : m_alphaEnabled(false) {}
  bool isAlphaEnabled() const { return m_alphaEnabled; }

  void visit(TDoubleProperty *p) override {}
  void visit(TIntProperty *p) override {}
  void visit(TBoolProperty *p) override {
    if (p->getName() == "Alpha Channel") m_alphaEnabled = p->getValue();
  }
  void visit(TStringProperty *p) override {}
  void visit(TEnumProperty *p) override {
    if (p->getName() == "Resolution")
      m_alphaEnabled = p->getValue() == L"32 bits";
  }
};

//=============================================================================
// RasterMovieGenerator ( animazioni raster)
//-----------------------------------------------------------------------------

class RasterMovieGenerator final : public MovieGenerator::Imp {
public:
  bool m_isFrames;
  TLevelWriterP m_lw;
  bool m_alphaEnabled;  //! alpha channel is generated (to disk)
  bool m_alphaNeeded;   //! alpha channel will be visible (i.e. transparent
                        //! background)

  TAffine m_viewAff;
  TOfflineGL &m_offlineGlContext;
  int m_frameIndex;
  bool m_started;
  TSoundTrackP m_st;
  long m_whiteSample;  //! ?? something audio related
  TPropertyGroup *m_fileOptions;
  int m_status;

  RasterMovieGenerator(const TFilePath &fp, const TDimension cameraSize,
                       TOutputProperties &properties)
      : Imp(fp, cameraSize, properties.getFrameRate())
      , m_frameIndex(1)
      , m_started(false)
      , m_offlineGlContext(*TOfflineGL::getStock(cameraSize))
      , m_st(0)
      , m_whiteSample(0)
      , m_fileOptions(0)
      , m_alphaEnabled(false)
      , m_alphaNeeded(false)
      , m_status(0) {
    m_bgColor = TPixel32(255, 255, 255, 0);
    TPointD center(0.5 * cameraSize.lx, 0.5 * cameraSize.ly);
    m_viewAff       = TTranslation(center);
    std::string ext = fp.getType();
    m_isFrames      = ext != "avi" && ext != "mov" && ext != "3gp";
    m_fileOptions   = properties.getFileFormatProperties(ext);
  }

  void start(const ToonzScene &scene) {
    m_status      = 3;
    m_alphaNeeded = scene.getProperties()->getBgColor().m < 255;
    assert(m_started == false);
    m_started = true;
    if (TSystem::doesExistFileOrLevel(m_filepath))
      TSystem::removeFileOrLevel(m_filepath);

    m_lw = TLevelWriterP(m_filepath);
    m_lw->setFrameRate(m_fps);
    if (m_lw->getProperties() && m_fileOptions)
      m_lw->getProperties()->setProperties(m_fileOptions);

    if (m_st) m_lw->saveSoundTrack(m_st.getPointer());
  }

  bool addFrame(ToonzScene &scene, int row, bool isLast) override {
    assert(m_status == 3);
    if (!m_started) start(scene);

    TDimension cameraRes   = scene.getCurrentCamera()->getRes();
    TDimensionD cameraSize = scene.getCurrentCamera()->getSize();

    TPointD center(0.5 * cameraSize.lx, 0.5 * cameraSize.ly);

    double sx = (double)m_offlineGlContext.getLx() / (double)cameraRes.lx;
    double sy = (double)m_offlineGlContext.getLy() / (double)cameraRes.ly;
    double sc = std::min(sx, sy);

    // TAffine cameraAff =
    // scene.getXsheet()->getPlacement(TStageObjectId::CameraId(0), row);
    TAffine cameraAff = scene.getXsheet()->getCameraAff(row);

    double dpiScale =
        (1.0 / Stage::inch) * (double)cameraRes.lx / cameraSize.lx;

    // TAffine viewAff = TScale(dpiScale*sc) * TTranslation(center)*
    // cameraAff.inv();
    TAffine viewAff = TTranslation(0.5 * cameraRes.lx, 0.5 * cameraRes.ly) *
                      TScale(dpiScale * sc) * cameraAff.inv();

    TRect clipRect(m_offlineGlContext.getBounds());
    TPixel32 bgColor = scene.getProperties()->getBgColor();

    m_offlineGlContext.makeCurrent();
    TPixel32 bgClearColor = m_bgColor;

    if (m_alphaEnabled && m_alphaNeeded) {
      const double maxValue = 255.0;
      double alpha          = (double)bgClearColor.m / maxValue;
      bgClearColor.r *= alpha;
      bgClearColor.g *= alpha;
      bgClearColor.b *= alpha;
    }
    m_offlineGlContext.clear(bgClearColor);

    Stage::VisitArgs args;
    args.m_scene = &scene;
    args.m_xsh   = scene.getXsheet();
    args.m_row   = row;
    args.m_col   = m_columnIndex;
    args.m_osm   = &m_osMask;

    ImagePainter::VisualSettings vs;
    Stage::OpenGlPainter painter(viewAff, clipRect, vs, false, true);

    Stage::visit(painter, args);
    /*
painter,
&scene,
scene.getXsheet(), row,
m_columnIndex, m_osMask,
false,0);
*/
    TImageWriterP writer = m_lw->getFrameWriter(m_frameIndex++);
    if (!writer) return false;

#ifdef MACOSX
    glFinish();  // per fissare il bieco baco su Mac/G3
#endif

    TRaster32P raster = m_offlineGlContext.getRaster();

#ifdef MACOSX
    if (m_alphaEnabled && m_alphaNeeded)
      checkAndCorrectPremultipliedImage(raster);
#endif

    if (Preferences::instance()->isSceneNumberingEnabled())
      TRasterImageUtils::addSceneNumbering(TRasterImageP(raster),
                                           m_frameIndex - 1,
                                           scene.getSceneName(), row + 1);
    TRasterImageP img(raster);
    writer->save(img);

    return true;
  }

  void addSoundtrack(const ToonzScene &scene, int frameOffset,
                     int sceneFrameCount) override {
    assert(m_status <= 2);
    m_status                       = 2;
    TXsheet::SoundProperties *prop = new TXsheet::SoundProperties();
    prop->m_frameRate              = m_fps;
    TSoundTrack *snd               = scene.getXsheet()->makeSound(prop);
    if (!snd || m_filepath.getDots() == "..") {
      m_whiteSample += sceneFrameCount * 918;
      return;
    }
    long samplePerFrame = snd->getSampleRate() / m_fps;
    TSoundTrackP snd1   = snd->extract(
        frameOffset * samplePerFrame,
        (TINT32)((frameOffset + sceneFrameCount - 1) * samplePerFrame));
    if (!m_st) {
      m_st          = TSoundTrack::create(snd1->getFormat(), m_whiteSample);
      m_whiteSample = 0;
    }
    TINT32 fromSample = m_st->getSampleCount();
    TINT32 numSample  = std::max(TINT32(sceneFrameCount * samplePerFrame),
                                snd1->getSampleCount());
    m_st = TSop::insertBlank(m_st, fromSample, numSample + m_whiteSample);
    m_st->copy(snd1, TINT32(fromSample + m_whiteSample));
    m_whiteSample = 0;
  }

  void startScene(const ToonzScene &scene, int r) override {
    if (!m_started) start(scene);
  }

  void close() override {
    m_lw = TLevelWriterP();
    m_st = TSoundTrackP();
  }
};

//=============================================================================
// MovieGenerator
//-----------------------------------------------------------------------------

MovieGenerator::MovieGenerator(const TFilePath &path,
                               const TDimension &resolution,
                               TOutputProperties &outputProperties,
                               bool useMarkers) {
  m_imp.reset(new RasterMovieGenerator(path, resolution, outputProperties));
  m_imp->m_useMarkers = useMarkers;
}

//-------------------------------------------------------------------

MovieGenerator::~MovieGenerator() {}

//-------------------------------------------------------------------

void MovieGenerator::setListener(Listener *listener) {
  m_imp->m_listener = listener;
}

//-------------------------------------------------------------------

void MovieGenerator::close() { m_imp->close(); }

//-------------------------------------------------------------------

void MovieGenerator::setSceneCount(int sceneCount) {
  m_imp->m_sceneCount = sceneCount;
}

//-------------------------------------------------------------------

bool MovieGenerator::addSoundtrack(const ToonzScene &scene, int frameOffset,
                                   int sceneFrameCount) {
  m_imp->addSoundtrack(scene, frameOffset, sceneFrameCount);
  return true;
}

//-------------------------------------------------------------------

bool MovieGenerator::addScene(ToonzScene &scene, int r0, int r1) {
  TApp *app                 = TApp::instance();
  RasterMovieGenerator *imp = dynamic_cast<RasterMovieGenerator *>(m_imp.get());
  if (imp) imp->m_alphaEnabled = true;
  m_imp->m_renderRange         = std::make_pair(r0, r1);
  m_imp->startScene(scene, r0);
  for (int r = r0; r <= r1; r++) {
    TColorStyle::m_currentFrame = r;
    if (!m_imp->addFrame(scene, r, r == r1)) {
      TColorStyle::m_currentFrame = app->getCurrentFrame()->getFrame();
      return false;
    }
    if (m_imp->m_listener) {
      bool ret = m_imp->m_listener->onFrameCompleted(r);
      if (!ret) {
        throw TException("Execution canceled by user");
        TColorStyle::m_currentFrame = app->getCurrentFrame()->getFrame();
        return false;
      }
    }
  }
  TColorStyle::m_currentFrame = app->getCurrentFrame()->getFrame();
  return true;
}

//-------------------------------------------------------------------

void MovieGenerator::setBackgroundColor(TPixel32 color) {
  m_imp->m_bgColor = color;
}

//-------------------------------------------------------------------

TPixel32 MovieGenerator::getBackgroundColor() { return m_imp->m_bgColor; }

//-------------------------------------------------------------------

TFilePath MovieGenerator::getOutputPath() { return m_imp->m_filepath; }

//-------------------------------------------------------------------

void MovieGenerator::setOnionSkin(int columnIndex, const OnionSkinMask &mask) {
  m_imp->m_columnIndex = columnIndex;
  m_imp->m_osMask      = mask;
}

//-------------------------------------------------------------------