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

  BionxControl
  © 2025 -2026 christoph holzheuer
  christoph.holzheuer@gmail.com

  Using:

  mhs_can_drv.c
  © 2011 - 2023 by MHS-Elektronik GmbH & Co. KG, Germany
  Klaus Demlehner, klaus@mhs-elektronik.de
  @see www.mhs-elektronik.de

  Based on Bionx data type descriptions from:

  BigXionFlasher USB V 0.2.4 rev. 97
  © 2011-2013 by Thomas Koenig <info@bigxionflasher.org>
  @see www.bigxionflasher.org

  Bionx Bike Info
  © 2018 Thorsten Schmidt (tschmidt@ts-soft.de)
  @see www.ts-soft.de

  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.
  @see https://github.com/bikemike/bionx-bikeinfo

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


#include <QSlider>
#include <QLabel>
#include <QHBoxLayout>
#include <QWidget>
#include <QDebug>
#include <QPainter>
#include <QTimer>

#include <QVariantAnimation>
#include <QPropertyAnimation>
#include <QPainter>

#include <bcdeviceview.h>
#include <bcvaluedelegate.h>
#include <bcvalueeditor.h>


BCValueDelegate::BCValueDelegate(const BCValueList& valueList, BCDeviceView* view)
    : QStyledItemDelegate{view}, _valueList{valueList}, _view{view}
{

}


QWidget* BCValueDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex& index) const
{

  Q_UNUSED(option)
  Q_UNUSED(index)

  const BCValue& bcValue = *(_valueList[ index.row()].get());

  int value,min,max;
  bool hasData = bcValue.valuesForSlider( value, min, max );
  if( !hasData )
    return nullptr;

  qDebug() << " --- Create Editor: " << bcValue.label() << " value: " << value << " min: " << min << " max: " << max << " ratio:" << bcValue.calcMinMaxRatio()*100.0 << '%';

  auto* valueEditor = new BCValueEditor(parent);
  valueEditor->setValue( value );
  valueEditor->setRange( min, max );

  // Signal für sofortige Updates
  connect(valueEditor, &BCValueEditor::valueChanged, this, [this, valueEditor]()
  {
    // Commit data sofort bei Änderung
    emit const_cast<BCValueDelegate*>(this)->commitData(valueEditor);
  });

  // Signal für sofortige Updates
  connect(valueEditor, &BCValueEditor::valueCommited, this, [this, valueEditor](int newValue)
  {
    qDebug() << " --- value set:" << newValue;
    // Commit data sofort bei Änderung
    //emit const_cast<BCValueDelegate*>(this)->commitData(valueEditor);
  });

  return valueEditor;
}

void BCValueDelegate::setEditorData(QWidget *editor, const QModelIndex& index) const
{
  Q_UNUSED(editor)
  Q_UNUSED(index)

  // tue nix.

}

void BCValueDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex& index) const
{
  if( index.column() == 1)
  {
    // Daten vom Editor zurück ins Model speichern (Beim Schließen)
    BCValueEditor* slider = qobject_cast<BCValueEditor*>(editor);
    if (slider)
    {
      int value = slider->getValue();
      model->setData(index, value, Qt::EditRole);
    }
    return;
  }

  QStyledItemDelegate::setModelData(editor, model, index);
}


void BCValueDelegate::paint(QPainter *painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
  // Standard-Zeichnen (Text, Hintergrund, Selection) durchführen
  QStyledItemDelegate::paint(painter, option, index);
  int row = index.row();

  if( index.column() == 1 )
  {
    if( row>-1 && row <= _valueList.size() )
    {
      const BCValue& bcValue = *(_valueList[ index.row()].get());
      if( !bcValue.isReadOnly()  )
      {
        if( bcValue.valueType() == BCValue::ValueType::Bool )
          paintButtonIndicator(painter,option,bcValue);
        else
          paintSliderIndicator(painter,option,bcValue);

      }

    }

    if(_rowOpacities.contains(row))
       paintHighlightRow(painter,option,index.row());
  }
}


void BCValueDelegate::paintHighlightRow(QPainter* painter, const QStyleOptionViewItem& option, int row) const
{
  painter->save();
  painter->setRenderHint(QPainter::Antialiasing);
  qreal opacity =_rowOpacities.value(row);
  painter->setOpacity(opacity);
  // Margin von 2px
  const int m = 3;
  QRect itemRect = option.rect.adjusted(m,m,-m,-m);

  // Border (2px solid #2196F3)
  // oranger rahmen
  QPen borderPen( QColor(0xFF8C00), 1);
  painter->setPen(borderPen);
  painter->setBrush(Qt::NoBrush);

  // highlight background
  //QColor highlightColor = option.palette.highlight().color();
  //highlightColor.setAlphaF(0.3); // 0.0 bis 1.0 (float ist oft lesbarer)
  //painter->fillRect(option.rect, highlightColor);

  painter->drawRoundedRect(itemRect, 2, 2);

  painter->restore();

}


void BCValueDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex& index) const
{

  Q_UNUSED(index)

  QRect sliderRect = option.rect.adjusted(
    option.rect.width() - cTextBlockOffset,  // Von rechts: cTextBlockOffset (==130) px (Breite der Progress Bar)
    0,                          // Oben: kein Offset
    -cPaddingRight,              // Rechts: 8px Padding
    0                           // Unten: kein Offset
    );
  editor->setGeometry(sliderRect);  // Slider nur über Progress Bar

}

void BCValueDelegate::paintButtonIndicator(QPainter* painter, const QStyleOptionViewItem& option, const BCValue& bcValue) const
{

}

void BCValueDelegate::paintSliderIndicator(QPainter* painter, const QStyleOptionViewItem& option, const BCValue& bcValue) const
{
  double ratio = bcValue.calcMinMaxRatio();
  qDebug() << " --- paint: " << bcValue.label() << ":" << ratio;

  // Text und kleiner Slider-Indikator zeichnen
  painter->save();
  painter->setRenderHint(QPainter::Antialiasing);

  int adjX = option.rect.width() - cTextBlockOffset;

  // Mini Progress Bar: der Gesamtbereich
  QRect barRect = option.rect.adjusted( adjX, 12, -10-24, -12 );
  painter->setPen(Qt::NoPen);
  painter->setBrush(QColor(0xE0E0E0));
  painter->drawRoundedRect(barRect, 2, 2);

  // Mini Progress Bar: der Wertebereich
  barRect.setWidth( ratio * barRect.width() );
  painter->setBrush(QColor(0x0078D4));
  painter->drawRoundedRect(barRect, 2, 2);

  painter->restore();

}


/**
 * @brief Zeichnet eine passiven Slider, um den möglichen Wertebereich des übergebenen BCValue anzuzeigen.
 */

void BCValueDelegate::paintSliderIndicatorXX(QPainter* painter, const QStyleOptionViewItem& option, const BCValue& bcValue) const
{
  // Text und kleiner Slider-Indikator zeichnen
  painter->save();
  painter->setRenderHint(QPainter::Antialiasing);

  int newX = option.rect.width() - cTextBlockOffset;

  QRect barRect = option.rect.adjusted( newX,
                                       option.rect.height() / 2  + 1,
                                      - option.rect.width() + cTextBlockOffset + 117 - 18,
                                       -option.rect.height() / 2 - 3);


  double ratio = bcValue.calcMinMaxRatio();
  qDebug() << " --- paint: " << bcValue.label() << ":" << ratio;
  if(ratio)
  {
    // Mini Progress Bar: der Gesamtbereich
    painter->setPen(Qt::NoPen);
    painter->setBrush(QColor(0xE0E0E0));
    //QColor disabledText = option.palette.color(QPalette::Disabled, QPalette::Text);
    //painter->setBrush(disabledText);
    painter->drawRoundedRect(barRect, 2, 2);

    QRect fillRect = barRect;
     // ein wert darf näturlich nie über 100% eingestellt werden
    ratio = qBound(0.0,ratio,1.0);

    fillRect.setWidth(barRect.width() * ratio);
    painter->setBrush(QColor(0x0078D4));
    painter->drawRoundedRect(fillRect, 2, 2);
  }

  painter->restore();

}


/**
 * @brief Startet die Animation für die übergebene Zeile
 * @param row
 */

void BCValueDelegate::onHighlightRow(int row)
{
  // Alte Animation für diese Zeile stoppen falls vorhanden
  if (_rowAnimations.contains(row))
  {
    _rowAnimations[row]->stop();
    _rowAnimations[row]->deleteLater();
  }

  // QVariantAnimation ist flexibler als QPropertyAnimation
  auto* anim = new QVariantAnimation(this);
  anim->setDuration(800);
  anim->setStartValue(0.0);
  anim->setEndValue(1.0);

  // Custom Easing für Fade-in/out Effekt
  anim->setEasingCurve(QEasingCurve::OutQuad);

  connect(anim, &QVariantAnimation::valueChanged, this, [this, row](const QVariant& value)
  {
    qreal progress = value.toReal();
    qreal opacity;

    // Schnelles Fade-in (20%), langsames Fade-out (80%)
    if (progress < 0.2) {
      opacity = progress * 5.0; // 0->1 in 20%
    } else {
      opacity = 1.0 - ((progress - 0.2) / 0.8); // 1->0 in 80%
    }

   _rowOpacities[row] = opacity;
    updateRow(row);
  });

  connect(anim, &QVariantAnimation::finished, this, [this, row, anim]()
  {
   _rowOpacities.remove(row);
    _rowAnimations.remove(row);
    updateRow(row);
    anim->deleteLater();
  });

  _rowAnimations[row] = anim;
  anim->start(QAbstractAnimation::DeleteWhenStopped);
}


/**
 * @brief Sopt alle gerade laufenden Animationen
 */

void BCValueDelegate::clearAllHighlights()
{
  for(auto* anim : std::as_const(_rowAnimations))
  {
    anim->stop();
    anim->deleteLater();
  }
  _rowAnimations.clear();
 _rowOpacities.clear();

  if (_view)
  {
    _view->viewport()->update();
  }
}


/**
 * @brief Zeichnet die übegebene Zeile neu.
 * @param row
 */

void BCValueDelegate::updateRow(int row)
{
  if (_view && _view->model() && row >= 0)
  {
    QModelIndex idx = _view->model()->index(row,1);
    QRect rect = _view->visualRect(idx);
    if (!rect.isEmpty()) {
      _view->viewport()->update(rect);
    }
  }
}