#include <streambuf></streambuf>

#include <qstandardpaths></qstandardpaths>

#include "tfilepath_io.h"

#include "timage_io.h"

#include "trop.h"

#include "tsystem.h"

#include "tvectorimage.h"

#include "tpixelutils.h"

#include "toonz/toonzscene.h"

#include "toonz/mypaintbrushstyle.h"

#include <qdebug></qdebug>

#include <sstream></sstream>

//*************************************************************************************

//    TMyPaintBrushStyle  implementation

//*************************************************************************************

TMyPaintBrushStyle::TMyPaintBrushStyle() {}

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

TMyPaintBrushStyle::TMyPaintBrushStyle(const TFilePath &path) {

  loadBrush(path);

}

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

TMyPaintBrushStyle::TMyPaintBrushStyle(const TMyPaintBrushStyle &other)

    : TColorStyle(other)

    , m_path(other.m_path)

    , m_fullpath(other.m_fullpath)

    , m_brushOriginal(other.m_brushOriginal)

    , m_brushModified(other.m_brushModified)

    , m_preview(other.m_preview)

    , m_color(other.m_color)

    , m_baseValues(other.m_baseValues) {}

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

TMyPaintBrushStyle::~TMyPaintBrushStyle() {}

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

TColorStyle *TMyPaintBrushStyle::clone(std::string brushIdName) const {

  TMyPaintBrushStyle *style = new TMyPaintBrushStyle(*this);

  style->loadBrush(TFilePath(getBrushIdNameParam(brushIdName)));

  return style;

}

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

TColorStyle &TMyPaintBrushStyle::copy(const TColorStyle &other) {

  const TMyPaintBrushStyle *otherBrushStyle =

      dynamic_cast<const *="" tmypaintbrushstyle="">(&other);</const>

  if (otherBrushStyle) {

    m_path          = otherBrushStyle->m_path;

    m_fullpath      = otherBrushStyle->m_fullpath;

    m_brushOriginal = otherBrushStyle->m_brushOriginal;

    m_brushModified = otherBrushStyle->m_brushModified;

    m_preview       = otherBrushStyle->m_preview;

    m_baseValues    = otherBrushStyle->m_baseValues;

  }

  assignBlend(other, other, 0.0);

  return *this;

}

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

QString TMyPaintBrushStyle::getDescription() const {

  return "MyPaintBrushStyle";

}

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

std::string TMyPaintBrushStyle::getBrushIdName() const {

  std::wstring ws = m_path.getWideString();

  const std::string s(ws.begin(), ws.end());

  return "MyPaintBrushStyle:" + s;

}

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

std::string TMyPaintBrushStyle::getBrushType() { return "myb"; }

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

TFilePathSet TMyPaintBrushStyle::getBrushesDirs() {

  TFilePathSet paths;

  paths.push_back(m_libraryDir + "mypaint brushes");

  QStringList genericLocations =

      QStandardPaths::standardLocations(QStandardPaths::GenericDataLocation);

  for (QStringList::iterator i = genericLocations.begin();

       i != genericLocations.end(); ++i)

    paths.push_back(TFilePath(*i) + "mypaint" + "brushes");

  return paths;

}

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

TFilePath TMyPaintBrushStyle::decodePath(const TFilePath &path) const {

  if (path.isAbsolute()) return path;

  if (m_currentScene) {

    TFilePath p = m_currentScene->decodeFilePath(path);

    TFileStatus fs(p);

    if (fs.doesExist() && !fs.isDirectory()) return p;

  }

  TFilePathSet paths = getBrushesDirs();

  for (TFilePathSet::iterator i = paths.begin(); i != paths.end(); ++i) {

    TFilePath p = *i + path;

    TFileStatus fs(p);

    if (fs.doesExist() && !fs.isDirectory()) return p;

  }

  return path;

}

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

static std::string mybToVersion3(std::string origStr) {

  std::string outStr   = "";

  std::string comment  = "";

  bool settingsStarted = false;

  std::stringstream strstream(origStr);

  outStr += "{\n";

  for (std::string line; std::getline(strstream, line);) {

    std::replace(line.begin(), line.end(), '\r', ' ');

    if (line.find("version 2") != std::string::npos)

      continue;  // Ignore version.  We'll add version back later as version 3

    if (line[0] == '#') {

      comment = comment + line;

      continue;

    }

    if (!settingsStarted) {

      settingsStarted = true;

      outStr += "    \"comment\": \"" + comment + "\",\n";

      outStr += "    \"group\": \"\",\n";

      outStr += "    \"parent_brush_name\": \"\",\n";

      outStr += "    \"settings\": {\n";

    } else

      outStr += ",\n";

    int startPos = 0;

    int pipe     = line.find("|");

    std::string settingInfo = line.substr(startPos, pipe);

    std::string setting     = settingInfo.substr(startPos, line.find(" "));

    std::string baseValue =

        settingInfo.substr(setting.length(), settingInfo.find_last_not_of(" "));

    outStr += "        \"" + setting + "\": {\n";

    outStr += "            \"base_value\": " + baseValue + ",\n";

    if (pipe == std::string::npos)

      outStr += "            \"inputs\": {}";

    else {

      outStr += "            \"inputs\": {\n";

      while (pipe != line.length()) {

        if (startPos > 0) outStr += ",\n";

        startPos = pipe + 1;

        pipe     = line.find("|", startPos);

        if (pipe == std::string::npos) pipe = line.length();

        settingInfo      = line.substr(startPos, pipe - startPos);

        int firstCharPos = settingInfo.find_first_not_of(" ");

        setting          = settingInfo.substr(firstCharPos,

                                     settingInfo.find(" ", firstCharPos) - 1);

        outStr += "                \"" + setting + "\": [\n";

        firstCharPos = settingInfo.find_first_not_of(" ", setting.length() + 1);

        baseValue    = settingInfo.substr(firstCharPos, pipe - startPos);

        int comma    = baseValue.find(", ");

        if (comma == std::string::npos) comma = baseValue.length();

        std::string value = baseValue.substr(0, comma);

        std::replace(value.begin(), value.end(), '(', '[');

        std::replace(value.begin(), value.end(), ')', ']');

        std::replace(value.begin(), value.end(), ' ', ',');

        outStr += "                    " + value;

        int prevComma;

        while (comma != baseValue.length()) {

          outStr += ",\n";

          prevComma = comma + 2;

          comma     = baseValue.find(", ", prevComma);

          if (comma == std::string::npos) comma = baseValue.length();

          value = baseValue.substr(prevComma, comma - prevComma);

          std::replace(value.begin(), value.end(), '(', '[');

          std::replace(value.begin(), value.end(), ')', ']');

          std::replace(value.begin(), value.end(), ' ', ',');

          outStr += "                    " + value;

        }

        outStr += "\n                ]";  // Ends Input setting

      }

      outStr += "\n            }";  // End Inputs

    }

    outStr += "\n        }";  // End Setting

  }

  outStr += "\n";

  if (settingsStarted) {

    outStr += "    },\n";  // End Settings

    outStr += "    \"version\": 3\n";

  }

  outStr += "}";  // Ends file

  return outStr;

}

void TMyPaintBrushStyle::loadBrush(const TFilePath &path) {

  m_path     = path;

  m_fullpath = decodePath(path);

  m_brushOriginal.fromDefaults();

  Tifstream is(m_fullpath);

  if (is) {

    std::string str;

    str.assign(std::istreambuf_iterator<char>(is),</char>

               std::istreambuf_iterator<char>());</char>

    if (str.find("version 2") != std::string::npos) str = mybToVersion3(str);

    m_brushOriginal.fromString(str);

  }

  m_brushModified = m_brushOriginal;

  std::map<mypaintbrushsetting, float=""> baseValuesCopy;</mypaintbrushsetting,>

  baseValuesCopy.swap(m_baseValues);

  for (std::map<mypaintbrushsetting, float="">::const_iterator i =</mypaintbrushsetting,>

           baseValuesCopy.begin();

       i != baseValuesCopy.end(); ++i)

    setBaseValue(i->first, i->second);

  TFilePath preview_path =

      m_fullpath.getParentDir() + (m_fullpath.getWideName() + L"_prev.png");

  TImageReader::load(preview_path, m_preview);

  invalidateIcon();

}

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

void TMyPaintBrushStyle::setBaseValue(MyPaintBrushSetting id, bool enable,

                                      float value) {

  float def = m_brushOriginal.getBaseValue(id);

  if (enable && fabsf(value - def) > 0.01) {

    m_baseValues[id] = value;

    m_brushModified.setBaseValue(id, value);

  } else {

    m_baseValues.erase(id);

    m_brushModified.setBaseValue(id, def);

  }

}

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

void TMyPaintBrushStyle::resetBaseValues() {

  for (int i = 0; i < MYPAINT_BRUSH_SETTINGS_COUNT; ++i)

    setBaseValueEnabled((MyPaintBrushSetting)i, false);

}

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

void TMyPaintBrushStyle::makeIcon(const TDimension &d) {

  TFilePath path =

      m_fullpath.getParentDir() + (m_fullpath.getWideName() + L"_prev.png");

  TPointD offset(0, 0);

  if (!m_preview) {

    m_icon = TRaster32P(d);

    m_icon->fill(TPixel32::Red);

  } else if (m_preview->getSize() == d) {

    m_icon = m_preview;

  } else {

    m_icon = TRaster32P(d);

    if (d.lx != d.ly) {

      TPixel32 col = getMainColor();

      if (col.m == 255)

        m_icon->fill(col);

      else {

        TRaster32P fg(d);

        fg->fill(premultiply(col));

        TRop::checkBoard(m_icon, TPixel32::Black, TPixel32::White,

                         TDimensionD(6, 6), TPointD());

        TRop::over(m_icon, fg);

      }

    }

    double sx    = (double)d.lx / (double)m_preview->getLx();

    double sy    = (double)d.ly / (double)m_preview->getLy();

    double scale = std::min(sx, sy);

    TRaster32P resamplePreview(m_preview->getLx(), m_preview->getLy());

    TRop::resample(resamplePreview, m_preview, TScale(scale),

                   TRop::ResampleFilterType::Hamming3);

    TRop::over(m_icon, resamplePreview);

  }

  // paint color marker

  // Only show color marker when the icon size is 22x22

  if (d.lx == d.ly && d.lx <= 22) {

    int size       = std::min(1 + std::min(d.lx, d.ly) * 2 / 3,

                        1 + std::max(d.lx, d.ly) / 2);

    TPixel32 color = getMainColor();

    color.m        = 255;  // show full opac color

    for (int y = 0; y < size; ++y) {

      TPixel32 *p    = m_icon->pixels(d.ly - y - 1);

      TPixel32 *endp = p + size - y - 1;

      for (; p != endp; ++p) *p = color;

      *p = blend(*p, color, 0.5);

    }

  }

}

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

void TMyPaintBrushStyle::loadData(TInputStreamInterface &is) {

  std::string path;

  is >> path;

  is >> m_color;

  loadBrush(TFilePath(path));

  int baseSettingsCount = 0;

  is >> baseSettingsCount;

  for (int i = 0; i < baseSettingsCount; ++i) {

    std::string key;

    double value    = 0.0;

    int inputsCount = 0;

    is >> key;

    is >> value;

    const mypaint::Setting *setting = mypaint::Setting::findByKey(key);

    if (setting) setBaseValue(setting->id, value);

  }

}

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

void TMyPaintBrushStyle::saveData(TOutputStreamInterface &os) const {

  std::wstring wstr = m_path.getWideString();

  std::string str;

  str.assign(wstr.begin(), wstr.end());

  os << str;

  os << m_color;

  os << (int)m_baseValues.size();

  for (std::map<mypaintbrushsetting, float="">::const_iterator i =</mypaintbrushsetting,>

           m_baseValues.begin();

       i != m_baseValues.end(); ++i) {

    os << mypaint::Setting::byId(i->first).key;

    os << (double)i->second;

  }

}

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

int TMyPaintBrushStyle::getParamCount() const {

  return MYPAINT_BRUSH_SETTINGS_COUNT;

}

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

QString TMyPaintBrushStyle::getParamNames(int index) const {

  return QString::fromUtf8(

      mypaint::Setting::byId((MyPaintBrushSetting)index).name.c_str());

}

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

TColorStyle::ParamType TMyPaintBrushStyle::getParamType(int index) const {

  return DOUBLE;

}

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

bool TMyPaintBrushStyle::hasParamDefault(int index) const { return true; }

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

void TMyPaintBrushStyle::setParamDefault(int index) {

  setBaseValueEnabled((MyPaintBrushSetting)index, false);

}

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

bool TMyPaintBrushStyle::isParamDefault(int index) const {

  return getBaseValueEnabled((MyPaintBrushSetting)index);

}

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

void TMyPaintBrushStyle::getParamRange(int index, double &min,

                                       double &max) const {

  const mypaint::Setting &setting =

      mypaint::Setting::byId((MyPaintBrushSetting)index);

  min = setting.min;

  max = setting.max;

}

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

void TMyPaintBrushStyle::setParamValue(int index, double value) {

  setBaseValue((MyPaintBrushSetting)index, value);

}

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

double TMyPaintBrushStyle::getParamValue(double_tag, int index) const {

  return getBaseValue((MyPaintBrushSetting)index);

}

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

namespace {

TColorStyle::Declaration mypaintBrushStyle(new TMyPaintBrushStyle());

}