#include "toonz/boardsettings.h"

// TnzLib includes

#include "toonz/toonzscene.h"

#include "toonz/tproject.h"

#include "toonz/sceneproperties.h"

#include "toonz/toonzfolders.h"

#include "toutputproperties.h"

#include "tsystem.h"

#include <qimage></qimage>

#include <qdate></qdate>

#include <qdatetime></qdatetime>

#include <qfontmetricsf></qfontmetricsf>

#include <qmap></qmap>

namespace {

QMap<boarditem::type, std::wstring=""> strs = {</boarditem::type,>

    {BoardItem::FreeText, L"FreeText"},

    {BoardItem::ProjectName, L"ProjectName"},

    {BoardItem::SceneName, L"SceneName"},

    {BoardItem::Duration_Frame, L"Duration_Frame"},

    {BoardItem::Duration_SecFrame, L"Duration_SecFrame"},

    {BoardItem::Duration_HHMMSSFF, L"Duration_HHMMSSFF"},

    {BoardItem::CurrentDate, L"CurrentDate"},

    {BoardItem::CurrentDateTime, L"CurrentDateTime"},

    {BoardItem::UserName, L"UserName"},

    {BoardItem::ScenePath_Aliased, L"ScenePath_Aliased"},

    {BoardItem::ScenePath_Full, L"ScenePath_Full"},

    {BoardItem::MoviePath_Aliased, L"MoviePath_Aliased"},

    {BoardItem::MoviePath_Full, L"MoviePath_Full"},

    {BoardItem::Image, L"Image"}};

std::wstring type2String(BoardItem::Type type) { return strs.value(type, L""); }

BoardItem::Type string2Type(std::wstring str) {

  return strs.key(str, BoardItem::TypeCount);

}

};  // namespace

BoardItem::BoardItem() {

  m_name            = "Item";

  m_type            = ProjectName;

  m_rect            = QRectF(0.1, 0.1, 0.8, 0.8);

  m_maximumFontSize = 300;

  m_color           = Qt::black;

}

QString BoardItem::getContentText(ToonzScene *scene) {

  auto getDuration = [&]() {

    TOutputProperties *oprop = scene->getProperties()->getOutputProperties();

    int from, to, step;

    if (oprop->getRange(from, to, step))

      return to - from + 1;

    else

      return scene->getFrameCount();

  };

  switch (m_type) {

  case FreeText:

    return m_text;

    break;

  case ProjectName:

    return scene->getProject()->getName().getQString();

    break;

  case SceneName:

    return QString::fromStdWString(scene->getSceneName());

    break;

  case Duration_Frame:

    return QString::number(getDuration());

    break;

  case Duration_SecFrame: {

    TOutputProperties *oprop = scene->getProperties()->getOutputProperties();

    int fps                  = (int)oprop->getFrameRate();

    int frame                = getDuration();

    return QString("%1 + %2").arg(QString::number(frame / fps),

                                  QString::number(frame % fps));

  } break;

  case Duration_HHMMSSFF: {

    TOutputProperties *oprop = scene->getProperties()->getOutputProperties();

    int fps                  = (int)oprop->getFrameRate();

    int frame                = getDuration();

    int hh                   = frame / (fps * 60 * 60);

    frame -= hh * fps * 60 * 60;

    int mm = frame / (fps * 60);

    frame -= mm * fps * 60;

    int ss = frame / fps;

    int ff = frame % fps;

    return QString::number(hh).rightJustified(2, '0') + ":" +

           QString::number(mm).rightJustified(2, '0') + ":" +

           QString::number(ss).rightJustified(2, '0') + ":" +

           QString::number(ff).rightJustified(2, '0');

  } break;

  case CurrentDate:

    return QDate::currentDate().toString(Qt::DefaultLocaleLongDate);

    break;

  case CurrentDateTime:

    return QDateTime::currentDateTime().toString(Qt::DefaultLocaleLongDate);

    break;

  case UserName:

    return TSystem::getUserName();

    break;

  case ScenePath_Aliased:

    return scene->codeFilePath(scene->getScenePath()).getQString();

    break;

  case ScenePath_Full:

    return scene->decodeFilePath(scene->getScenePath()).getQString();

    break;

  case MoviePath_Aliased: {

    TOutputProperties *oprop = scene->getProperties()->getOutputProperties();

    return scene->codeFilePath(oprop->getPath()).getQString();

  } break;

  case MoviePath_Full: {

    TOutputProperties *oprop = scene->getProperties()->getOutputProperties();

    return scene->decodeFilePath(oprop->getPath()).getQString();

  } break;

  default:

    break;

  }

  return QString();

}

QRectF BoardItem::getItemRect(QSize imgSize) {

  QSizeF imgSizeF(imgSize);

  return QRectF(

      imgSizeF.width() * m_rect.left(), imgSizeF.height() * m_rect.top(),

      imgSizeF.width() * m_rect.width(), imgSizeF.height() * m_rect.height());

}

void BoardItem::drawItem(QPainter &p, QSize imgSize, int shrink,

                         ToonzScene *scene) {

  QRectF itemRect = getItemRect(imgSize);

  if (m_type == Image) {

    if (m_imgPath.isEmpty()) return;

    TFilePath decodedPath = scene->decodeFilePath(m_imgPath);

    QImage img(decodedPath.getQString());

    if (m_imgARMode == Qt::KeepAspectRatio) {

      float ratio = std::min((float)itemRect.width() / (float)img.width(),

                             (float)itemRect.height() / (float)img.height());

      QSizeF imgSize((float)img.width() * ratio, (float)img.height() * ratio);

      QPointF imgTopLeft =

          itemRect.topLeft() +

          QPointF((itemRect.width() - imgSize.width()) * 0.5f,

                  (itemRect.height() - imgSize.height()) * 0.5f);

      p.drawImage(QRectF(imgTopLeft, imgSize), img);

    } else if (m_imgARMode == Qt::IgnoreAspectRatio)

      p.drawImage(itemRect, img);

    return;

  }

  QString contentText = getContentText(scene);

  QFont tmpFont(m_font);

  tmpFont.setPixelSize(100);

  QFontMetricsF tmpFm(tmpFont);

  QRectF tmpBounding =

      tmpFm.boundingRect(itemRect, Qt::AlignLeft | Qt::AlignTop, contentText);

  float ratio = std::min(itemRect.width() / tmpBounding.width(),

                         itemRect.height() / tmpBounding.height());

  // compute the font size which will just fit the item region

  int fontSize = (int)(100.0f * ratio);

  tmpFont.setPixelSize(fontSize);

  tmpFm = QFontMetricsF(tmpFont);

  tmpBounding =

      tmpFm.boundingRect(itemRect, Qt::AlignLeft | Qt::AlignTop, contentText);

  bool isInRect;

  if (itemRect.width() >= tmpBounding.width() &&

      itemRect.height() >= tmpBounding.height())

    isInRect = true;

  else

    isInRect = false;

  while (1) {

    fontSize += (isInRect) ? 1 : -1;

    if (fontSize <= 0)  // cannot draw

      return;

    tmpFont.setPixelSize(fontSize);

    tmpFm = QFontMetricsF(tmpFont);

    tmpBounding =

        tmpFm.boundingRect(itemRect, Qt::AlignLeft | Qt::AlignTop, contentText);

    bool newIsInRect = (itemRect.width() >= tmpBounding.width() &&

                        itemRect.height() >= tmpBounding.height());

    if (isInRect != newIsInRect) {

      if (isInRect) fontSize--;

      break;

    }

  }

  //----

  fontSize = std::min(fontSize, m_maximumFontSize / shrink);

  QFont font(m_font);

  font.setPixelSize(fontSize);

  p.setFont(font);

  p.setPen(m_color);

  if (m_type == FreeText)

    p.drawText(itemRect, Qt::AlignLeft | Qt::AlignTop, contentText);

  else

    p.drawText(itemRect, Qt::AlignCenter, contentText);

}

void BoardItem::saveData(TOStream &os) {

  os.child("type") << type2String(m_type);

  os.child("name") << m_name;

  os.child("rect") << m_rect.x() << m_rect.y() << m_rect.width()

                   << m_rect.height();

  if (m_type == Image) {

    // if the path is in library folder, then save the relative path

    TFilePath libFp = ToonzFolder::getLibraryFolder();

    if (libFp.isAncestorOf(m_imgPath))

      os.child("imgPath") << 1 << m_imgPath - libFp;

    else

      os.child("imgPath") << 0 << m_imgPath;

    os.child("imgARMode") << (int)m_imgARMode;

  } else {

    if (m_type == FreeText) os.child("text") << m_text;

    os.child("maximumFontSize") << m_maximumFontSize;

    os.child("color") << m_color.red() << m_color.green() << m_color.blue()

                      << m_color.alpha();

    os.child("font") << m_font.family() << (int)(m_font.bold() ? 1 : 0)

                     << (int)(m_font.italic() ? 1 : 0);

  }

}

void BoardItem::loadData(TIStream &is) {

  std::string tagName;

  while (is.matchTag(tagName)) {

    if (tagName == "type") {

      std::wstring typeStr;

      is >> typeStr;

      m_type = string2Type(typeStr);

    } else if (tagName == "name") {

      std::wstring str;

      is >> str;

      m_name = QString::fromStdWString(str);

    } else if (tagName == "rect") {

      double x, y, width, height;

      is >> x >> y >> width >> height;

      m_rect = QRectF(x, y, width, height);

    } else if (tagName == "imgPath") {

      int isInLibrary;

      TFilePath fp;

      is >> isInLibrary >> fp;

      if (isInLibrary == 1)

        m_imgPath = ToonzFolder::getLibraryFolder() + fp;

      else

        m_imgPath = fp;

    } else if (tagName == "imgARMode") {

      int mode;

      is >> mode;

      m_imgARMode = (Qt::AspectRatioMode)mode;

    } else if (tagName == "text") {

      std::wstring str;

      is >> str;

      m_text = QString::fromStdWString(str);

    } else if (tagName == "maximumFontSize") {

      is >> m_maximumFontSize;

    } else if (tagName == "color") {

      int r, g, b, a;

      is >> r >> g >> b >> a;

      m_color = QColor(r, g, b, a);

    } else if (tagName == "font") {

      QString family;

      int isBold, isItalic;

      is >> family >> isBold >> isItalic;

      m_font.setFamily(family);

      m_font.setBold(isBold == 1);

      m_font.setItalic(isItalic == 1);

    } else

      throw TException("unexpected tag: " + tagName);

    is.closeChild();

  }

}

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

BoardSettings::BoardSettings() {

  // add one item as an example

  m_items.push_back(BoardItem());

}

QImage BoardSettings::getBoardImage(TDimension &dim, int shrink,

                                    ToonzScene *scene) {

  QImage img(dim.lx, dim.ly, QImage::Format_ARGB32);

  QPainter painter(&img);

  painter.fillRect(img.rect(), Qt::white);

  // draw each item

  for (int i = m_items.size() - 1; i >= 0; i--)

    m_items[i].drawItem(painter, img.rect().size(), shrink, scene);

  painter.end();

  return img;

}

TRaster32P BoardSettings::getBoardRaster(TDimension &dim, int shrink,

                                         ToonzScene *scene) {

  QImage img = getBoardImage(dim, shrink, scene);

  // convert QImage to TRaster

  TRaster32P boardRas(dim);

  int img_y = img.height() - 1;

  for (int j = 0; j < dim.ly; j++, img_y--) {

    TPixel32 *pix = boardRas->pixels(j);

    QRgb *img_p   = (QRgb *)img.scanLine(img_y);

    for (int i = 0; i < dim.lx; i++, pix++, img_p++) {

      (*pix).r = (typename TPixel32::Channel)(qRed(*img_p));

      (*pix).g = (typename TPixel32::Channel)(qGreen(*img_p));

      (*pix).b = (typename TPixel32::Channel)(qBlue(*img_p));

      (*pix).m = (typename TPixel32::Channel)(qAlpha(*img_p));

    }

  }

  return boardRas;

}

void BoardSettings::addNewItem(int insertAt) {

  m_items.insert(insertAt, BoardItem());

}

void BoardSettings::removeItem(int index) {

  if (index < 0 || index >= m_items.size()) return;

  m_items.removeAt(index);

}

void BoardSettings::swapItems(int i, int j) { m_items.swap(i, j); }

void BoardSettings::saveData(TOStream &os, bool forPreset) {

  if (!forPreset) os.child("active") << (int)((m_active) ? 1 : 0);

  os.child("duration") << m_duration;

  if (!m_items.isEmpty()) {

    os.openChild("boardItems");

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

      os.openChild("item");

      m_items[i].saveData(os);

      os.closeChild();

    }

    os.closeChild();

  }

}

void BoardSettings::loadData(TIStream &is) {

  std::string tagName;

  while (is.matchTag(tagName)) {

    if (tagName == "active") {

      int val;

      is >> val;

      setActive(val == 1);

    } else if (tagName == "duration") {

      is >> m_duration;

    } else if (tagName == "boardItems") {

      m_items.clear();

      while (is.matchTag(tagName)) {

        if (tagName == "item") {

          BoardItem item;

          item.loadData(is);

          m_items.append(item);

        } else

          throw TException("unexpected tag: " + tagName);

        is.closeChild();

      }

    } else

      throw TException("unexpected tag: " + tagName);

    is.closeChild();

  }

}