/*
 * LCD Image Converter. Converts images and fonts for embedded applications.
 * Copyright (C) 2012 riuson
 * mailto: riuson@gmail.com
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/
 */

#include "dialogpreview.h"

#include "ui_dialogpreview.h"

#include <QFont>
#include <QList>
#include <QRegExp>

#include "bitmaphelper.h"
#include "conversionpreviewoptions.h"
#include "converterhelper.h"
#include "datacontainer.h"

namespace AppUI
{
namespace Setup
{

DialogPreview::DialogPreview(Data::Containers::DataContainer* dataContainer, Settings::Presets::Preset* matrix,
                             QWidget* parent)
    : QDialog(parent), ui(new Ui::DialogPreview)
{
  ui->setupUi(this);

  this->mData = dataContainer;
  this->mPreset = matrix;
  this->mScale = 1;

  if (this->mData != nullptr) {
    this->ui->comboBoxSampleKey->addItems(this->mData->keys());
    this->ui->comboBoxSampleKey->setCurrentIndex(0);
  } else {
    this->ui->comboBoxSampleKey->setEnabled(false);
  }

  QFont font("Monospace");
  font.setStyleHint(QFont::TypeWriter);
  this->ui->plainTextEdit->setFont(font);

  this->ui->spinBoxScale->setValue(Settings::ConversionPreviewOptions::scale());
}

DialogPreview::~DialogPreview()
{
  Settings::ConversionPreviewOptions::setScale(this->mScale);
  delete ui;
}

void DialogPreview::updatePreview()
{
  if (this->mData != nullptr) {
    QString key = this->ui->comboBoxSampleKey->currentText();

    if (!key.isEmpty()) {
      this->mImageOriginal = QImage(*this->mData->image(key));
      QImage processed;
      Parsing::Conversion::ConverterHelper::createImagePreview(this->mPreset, &this->mImageOriginal, &processed);
      // this->ui->labelPreview->setPixmap(QPixmap::fromImage(processed));
      this->mImageProcessed = processed;
      this->updatePreviewScaled(&this->mImageProcessed, this->mScale);

      // BitmapData data;
      // this->mConverter->processImage(processed, &data);

      // QString str = this->mConverter->dataToString(data);
      // this->ui->plainTextEdit->setPlainText(str);

      QVector<quint32> sourceData;
      int sourceWidth, sourceHeight;
      Parsing::Conversion::ConverterHelper::pixelsData(
          this->mPreset->prepare(), Parsing::Conversion::ConverterHelper::scanScript(this->mPreset),
          Parsing::Conversion::ConverterHelper::pixelsScript(this->mPreset), &this->mImageProcessed, &sourceData,
          &sourceWidth, &sourceHeight);

      Parsing::Conversion::ConverterHelper::processPixels(this->mPreset, &sourceData);

      QVector<quint32> packedData;
      Parsing::Conversion::ConverterHelper::packData(this->mPreset, &sourceData, sourceWidth, sourceHeight,
                                                     &packedData);

      QVector<quint32> reorderedData;
      Parsing::Conversion::ConverterHelper::reorder(this->mPreset, &packedData, &reorderedData);

      QVector<quint32> compressedData;
      Parsing::Conversion::ConverterHelper::compressData(this->mPreset, &reorderedData, &compressedData);

      QString dataString = Parsing::Conversion::ConverterHelper::dataToString(this->mPreset, &compressedData);

      this->ui->plainTextEdit->setPlainText(dataString);
    }
  }
}

void DialogPreview::wheelEvent(QWheelEvent* event)
{
  if ((event->modifiers() & Qt::ControlModifier) == Qt::ControlModifier) {
    QPoint point = event->globalPosition().toPoint();
    point = this->mapFromGlobal(point);

    QRect labelRectPreview = this->ui->labelPreview->rect();
    QPoint labelPoint = this->ui->labelPreview->pos();
    labelRectPreview.moveTo(labelPoint);

    if (labelRectPreview.contains(point.x(), point.y())) {
      if (qAbs(event->angleDelta().x()) < qAbs(event->angleDelta().y())) {
        int scale = this->mScale;

        if (event->angleDelta().y() > 0) {
          scale++;
        } else {
          scale--;
        }

        this->setScale(scale);
        this->ui->spinBoxScale->setValue(this->mScale);
      }

      event->accept();
    }
  }
}

void DialogPreview::setScale(int value)
{
  if (this->mScale != value) {
    if (value > 0 && value <= 50) {
      this->mScale = value;
      this->updatePreviewScaled(&this->mImageProcessed, this->mScale);
    }
  }
}

void DialogPreview::updatePreviewScaled(const QImage* image, int scale)
{
  QImage imageScaled = Parsing::Conversion::BitmapHelper::scale(image, scale);
  imageScaled = Parsing::Conversion::BitmapHelper::drawGrid(&imageScaled, scale);
  QPixmap pixmapScaled = QPixmap::fromImage(imageScaled);
  this->ui->labelPreview->setPixmap(pixmapScaled);
}

void DialogPreview::on_comboBoxSampleKey_currentIndexChanged() { this->updatePreview(); }

void DialogPreview::on_spinBoxScale_valueChanged(int value) { this->setScale(value); }

} // namespace Setup
} // namespace AppUI