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

  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 <QTableView>

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

#include "bcanimateddelegate.h"
#include "bcsliderstyle.h"


BCAnimatedDelegate::BCAnimatedDelegate(const BCValueList& valueList, QTableView* view)
    : QStyledItemDelegate{view}, _valueList{valueList}, _view{view}
{

}



void BCAnimatedDelegate::setEditorData(QWidget *editor, const QModelIndex& index) const
{
  /*
  // Daten vom Model in den Editor laden
  const BCValue& bc = *index.data(Qt::EditRole).value<BCValue*>();

  QSlider *slider = editor->findChild<QSlider*>("slider");
  QLabel *lblUnit = editor->findChild<QLabel*>("lblUnit");

  if (slider && lblUnit)
  {
    bool olDriverState = slider->blockSignals(true);
    slider->setValue(bc.formattedValue.toInt());
    slider->blockSignals(olDriverState);
    lblUnit->setText(QString("%1 %2").arg(bc.formattedValue.toInt()).arg( "mm3"));
  }
  else
  {
    QStyledItemDelegate::setEditorData(editor, index);
  }
*/
}

void BCAnimatedDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex& index) const
{
  qDebug() << "... SHUHU!";
  // Daten vom Editor zurück ins Model speichern (Beim Schließen)
  QSlider *slider = editor->findChild<QSlider*>("slider");
  if (slider)
  {
    int value = slider->value();
    model->setData(index, value, Qt::EditRole);
  }
  else
  {
    QStyledItemDelegate::setModelData(editor, model, index);
  }
}

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

  Q_UNUSED(index)
  /*
    QRect barRect = option.rect.adjusted(option.rect.width() - 55,
                                         option.rect.height() / 2 - 2,
                                         -8,
                                      -option.rect.height() / 2 + 2);
 */
  QRect sliderRect = option.rect.adjusted(
    option.rect.width() - 125,  // Von rechts: 115px (Breite der Progress Bar)
    0,                          // Oben: kein Offset
    -8,                         // Rechts: 8px Padding
    0                           // Unten: kein Offset
    );
  editor->setGeometry(sliderRect);  // Slider nur über Progress Bar
  //editor->setGeometry(option.rect);
  //  __fix!
  //editor->setGeometry(option.rect);
}

QSize BCAnimatedDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex& index) const
{
  return QStyledItemDelegate::sizeHint(option,index);
  /*
  QStyleOptionViewItem opt = option;
  initStyleOption(&opt, index);
  opt.text = formatDisplayString(index);

  QStyle *style = opt.widget ? opt.widget->style() : QApplication::style();
  return style->sizeFromContents(QStyle::CT_ItemViewItem, &opt, QSize(), opt.widget);
  */
}


void BCAnimatedDelegate::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());
      //qDebug() << " --- paintSLider: " << bcValue.label << " type: " << (int)bcValue.valueType << " flags:" << bcValue.valueFlags.toInt() << " RO: " << bcValue.isReadOnly();
      if( !bcValue.isReadOnly())
        paintSliderIndicator(painter,option,bcValue);
    }

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



QWidget* BCAnimatedDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex& index) const
{
  const BCValue& bcValue = *(_valueList[ index.row()].get());

  Q_UNUSED(option)
  Q_UNUSED(index)

  auto* slider = new QSlider(Qt::Horizontal, parent);
  slider->setRange(0, 100);
  slider->setSingleStep(1);
  slider->setPageStep(10);
  slider->setStyle(new FluentSliderStyle());
  // Signal für sofortige Updates
  connect(slider, &QSlider::valueChanged, this, [this, slider]()
  {
    // Commit data sofort bei Änderung
    emit const_cast<BCAnimatedDelegate*>(this)->commitData(slider);
  });

  return slider;
}


void BCAnimatedDelegate::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 4px
  QRect itemRect = option.rect.adjusted(3, 3, -3, -3);

  // 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();

}


/**
 * @brief Zeichnet eine passiven Slider, um den Wertebereich des übergebenen BCValue anzuzeigen.
 * @param painter
 * @param option
 * @param bcValue
 */
void BCAnimatedDelegate::paintSliderIndicator(QPainter* painter, const QStyleOptionViewItem& option, const BCValue& bcValue) const
{

  // Text und kleiner Slider-Indikator zeichnen
  painter->save();

  painter->setRenderHint(QPainter::Antialiasing);
  /*
  QRect barRect = option.rect.adjusted(option.rect.width() - 130,
                                       option.rect.height() / 2 - 2,
                                       -8,
                                       -option.rect.height() / 2 + 2);
*/

  QRect barRect = option.rect.adjusted(option.rect.width() - 130,
                                       option.rect.height() / 2  + 1,
                                       -8,
                                       -option.rect.height() / 2 - 3);

  double ratio = bcValue.calcRatio();
  if( ratio)
  {
    // Mini Progress Bar
    painter->setPen(Qt::NoPen);
    painter->setBrush(QColor(0xE0E0E0));
    painter->drawRoundedRect(barRect, 2, 2);

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

  painter->restore();


  /// -------

/*
  // Hintergrund
  if (option.state & QStyle::State_Selected)
  {
    painter->fillRect(option.rect, option.palette.highlight());
  }
  else
  {
    QColor bcColor = option.palette.color(QPalette::Base);
    painter->fillRect(option.rect, bcColor);
  }
*/


  /*
  // baby-Slider-Indikator zeichnen
  // Anteil zwischen min und max berechnen
  double ratio = bcValue.calcRatio();
  if( !ratio)
    return;

  painter->save();
  painter->setRenderHint(QPainter::Antialiasing);

  QRect barRect = option.rect.adjusted
  (
    8,
    option.rect.height() / 2 - 2,
    -8,
    -option.rect.height() / 2 + 2
  );

  // Mini Progress Bar
  painter->setPen(Qt::NoPen);
  QColor disabledText = option.palette.color(QPalette::Disabled, QPalette::Text);
  painter->setBrush(disabledText);

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

  barRect.setWidth(barRect.width() * ratio );
  painter->setBrush(QColor(0x0078D4));
  //painter->setBrush(Qt::green);
  //painter->setBrush(  );
  painter->drawRoundedRect(barRect, 2, 2);

  painter->restore();
*/
}


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

void BCAnimatedDelegate::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 BCAnimatedDelegate::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 BCAnimatedDelegate::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);
    }
  }
}