/**
  * @RDE_HEADER@
  * FunctionDialog
  * $Id$
  * $HeadURL$
  * $Author$
  */

#include "simple_esri_layer.h"

#include <arcgis/Map.h>

#include <MapImpl/map_impl.h>
#include <arcgis/Map.h>
#include <arcgis/MapGraphicsView.h>
#include <arcgis/LayerListModel.h>
#include <arcgis/ArcGISTiledLayer.h>


// for overview
#include <QDebug>
#include <QDialog>
#include <QLabel>
#include <QCheckBox>
#include <QPushButton>
#include <QSlider>
#include <QGridLayout>
#include <QStandardItemModel>


namespace SituationMap
{

Esri::ArcGISRuntime::Layer *getEsriBasemap_Layer(Esri::ArcGISRuntime::Map *map,
                                                 const QString &layername)
{
  if (!(map &&
        map->basemap() &&
        map->basemap()->baseLayers())
     )
    return nullptr;

  Esri::ArcGISRuntime::Layer *layerFound = nullptr;

  const Esri::ArcGISRuntime::LayerListModel *model = map->basemap()->baseLayers();
  for (int i = 0; i < model->size(); ++i)
  {
    const Esri::ArcGISRuntime::Layer *curLayer = model->at(i);
    const QString &curName = curLayer->name();
    if (QString::compare(layername, curName) == 0)
    {
      layerFound = model->at(i);
      break;
    }
  } // for
  return layerFound;
}


Esri::ArcGISRuntime::ArcGISTiledLayer *getEsriBasemap_ArcGISTiledLayer(Esri::ArcGISRuntime::Map *map,
                                                                       const QString &layername)
{
  Esri::ArcGISRuntime::Layer *layerFound = getEsriBasemap_Layer(map, layername);
  if (! layerFound)
    return nullptr;

  if (layerFound->layerType() == Esri::ArcGISRuntime::LayerType::ArcGISTiledLayer)
  {
    Esri::ArcGISRuntime::ArcGISTiledLayer *layer2 =
      static_cast<Esri::ArcGISRuntime::ArcGISTiledLayer *>(layerFound);
    return layer2;
  }
  return nullptr;
}



class SimpleEsriLayer::Private
{

public:
  Private()
  {
  }

  ~Private()
  {
  }

  // ESRI data:
  Esri::ArcGISRuntime::Map             *m_map     = nullptr;
  Esri::ArcGISRuntime::MapGraphicsView *m_mapView = nullptr;

  // OWN data:
  QGridLayout                          *m_layout = nullptr;


}; // class SimpleEsriLayer::Private
//-----------------------------------------------------------------------------



SimpleEsriLayer::SimpleEsriLayer(QWidget *parent, Esri::ArcGISRuntime::MapGraphicsView *mapView)
  : QWidget(parent)
  , d(new Private)
{
  d->m_mapView = mapView;
  if (d->m_mapView)
    d->m_map = d->m_mapView->map();

  d->m_layout = new QGridLayout(this);

  updatePanel();
}

SimpleEsriLayer::~SimpleEsriLayer()
{
  delete d;
}

bool SimpleEsriLayer::updatePanel()
{

  for (int row = 0; row < d->m_layout->rowCount(); ++row)
  {
    for (int col = 0; col < d->m_layout->columnCount(); ++col)
    {
      QLayoutItem *item = d->m_layout->itemAtPosition(row, col);
      if (item)
      {
        QWidget *w = item->widget();
        delete w;
      }
    }
  }

  delete d->m_layout;
  d->m_layout = new QGridLayout(this);


  if (d->m_map)
  {
    // Header
    int row = 0;
    int col = 0;
    for (const char *name : { "OnOff", "Opac", "Brightness", "Contrast", "Gamma" })
      d->m_layout->addWidget(new QLabel(QString::fromLatin1(name)), row, col++);


    row = d->m_layout->rowCount();

    // GraphicalOverlay
    Esri::ArcGISRuntime::GraphicsOverlayListModel *graphicsOverlayListModel = d->m_mapView->graphicsOverlays();
    if (graphicsOverlayListModel)
    {
      int graphicsOverlaySize = graphicsOverlayListModel->size();
//      qDebug() << LOGFUNCTION << " graphicsOverlayListModel -> size=" << graphicsOverlaySize;

      row += graphicsOverlaySize;

      for (int i = 0; i < graphicsOverlaySize; ++i)
      {
        --row;
        col = 0;
//        qDebug() << LOGFUNCTION << " graphicsOverlayListModel handle layer i='" << i;

        Esri::ArcGISRuntime::GraphicsOverlay *gOverlay = graphicsOverlayListModel->at(i);
        if (! gOverlay)
        {
          qWarning() << LOGFUNCTION << " gOverlay is nil";
          return false;
        }

        const QString &layername = gOverlay->objectName();

        QCheckBox *cbOnOff = new QCheckBox(layername);
        cbOnOff->setChecked(gOverlay->isVisible());

        connect(cbOnOff, &QCheckBox::stateChanged, this, &SimpleEsriLayer::layerOnOff);
        d->m_layout->addWidget(cbOnOff, row, col++);

        SimpleEsriLayerSlider *sl_opac = new SimpleEsriLayerSlider(layername, 0, 100);
        sl_opac->setValue(gOverlay->opacity() * 100);
        connect(sl_opac, &SimpleEsriLayerSlider::valueChanged, this, &SimpleEsriLayer::opacity);
        d->m_layout->addWidget(sl_opac, row, col++);

      } // for
    } // if (graphicsOverlayListModel)



    // BasemapLayer
    row = d->m_layout->rowCount();

    Esri::ArcGISRuntime::LayerListModel *baseLayerModel = d->m_map->basemap()->baseLayers();
    if (baseLayerModel)
    {
      int baseLayerModelSize = baseLayerModel->size();
      qWarning() << LOGFUNCTION << " baseLayerModel -> size=" << baseLayerModelSize;

      row += baseLayerModelSize;

      for (int i = 0; i < baseLayerModelSize; ++i)
      {
        col = 0;
        --row;
        qWarning() << LOGFUNCTION << " baseLayerModel handle layer i=" << i;
        Esri::ArcGISRuntime::Layer *layer = baseLayerModel->at(i);
        if (! layer)
        {
          qWarning() << LOGFUNCTION << " layer is nil";
          return false;
        }

        const QString &layername = layer->name();

        QCheckBox *cbOnOff = new QCheckBox(layername);
        cbOnOff->setChecked(layer->isVisible());

        //      QString tooltip = layer->url();
        //      if (!l->serviceDescription().isEmpty())
        //        tooltip += QLatin1String(" ; ") % l->serviceDescription();
        //      if (!tooltip.isEmpty())
        //        cbOnOff->setToolTip(tooltip);

        connect(cbOnOff, &QCheckBox::stateChanged, this, &SimpleEsriLayer::layerOnOff);
        d->m_layout->addWidget(cbOnOff, row, col++);

        SimpleEsriLayerSlider *sl_opac = new SimpleEsriLayerSlider(layername, 0, 100);
        sl_opac->setValue(layer->opacity() * 100);
        connect(sl_opac, &SimpleEsriLayerSlider::valueChanged, this, &SimpleEsriLayer::opacity);
        d->m_layout->addWidget(sl_opac, row, col++);


        if (layer->layerType() == Esri::ArcGISRuntime::LayerType::ArcGISTiledLayer
            //          || layer->type() == EsriRuntimeQt::LayerType::ArcGISTiledMapService
           )
        {

          Esri::ArcGISRuntime::ArcGISTiledLayer *realLayer =
            dynamic_cast<Esri::ArcGISRuntime::ArcGISTiledLayer *>(layer);
          if (realLayer)
          {
            float brightness  = realLayer->brightness();
            float contrast    = realLayer->contrast();
            float gamma       = realLayer->gamma();

            qWarning() << " brightness=" << brightness;  // QuartzBeta1 -> not supported
            qWarning() << " contrast=" << contrast;      // QuartzBeta1 -> not supported
            qWarning() << " gamma=" << gamma;            // QuartzBeta1 -> not supported

            SimpleEsriLayerSlider *sl_brightness = new SimpleEsriLayerSlider(layername, -100, 100);
            sl_brightness->setValue(brightness * 100);
            connect(sl_brightness, &SimpleEsriLayerSlider::valueChanged, this, &SimpleEsriLayer::brightness);
            d->m_layout->addWidget(sl_brightness, row, col++);

            SimpleEsriLayerSlider *sl_contrast = new SimpleEsriLayerSlider(layername, -100, 100);
            sl_contrast->setValue(contrast * 100);
            connect(sl_contrast, &SimpleEsriLayerSlider::valueChanged, this, &SimpleEsriLayer::contrast);
            d->m_layout->addWidget(sl_contrast, row, col++);

            SimpleEsriLayerSlider *sl_gamma = new SimpleEsriLayerSlider(layername, -100, 100);
            sl_gamma->setValue(gamma * 100);
            connect(sl_gamma, &SimpleEsriLayerSlider::valueChanged, this, &SimpleEsriLayer::gamma);
            d->m_layout->addWidget(sl_gamma, row, col++);
          } // ir (realLayer)

        } // if (layer->type() == Es
      } // for
    } // if (baseLayerModel)


    QPushButton *pbMaximizeExtent = new QPushButton(QLatin1String("maximize scale of 1st basemap"));
    d->m_layout->addWidget(pbMaximizeExtent, 9999, 0);
    connect(pbMaximizeExtent, &QPushButton::clicked, this, [this]()
    {
      if (d->m_map)
      {
        d->m_map->setMinScale(500000000); // 5e+08
        d->m_map->setMaxScale(100);
      }
    });

  }
  else
    qWarning() << LOGFUNCTION << " no map !!! ";

  return true;
}


void SimpleEsriLayer::layerOnOff()
{
  QCheckBox *cb = qobject_cast<QCheckBox *>(sender());
  if (!cb)
    return;

  QString layername = cb->text();
  qDebug() << LOGFUNCTION << " layername=" << layername;

  Esri::ArcGISRuntime::Layer *l = getEsriBasemap_Layer(d->m_map, layername);
  if (l)
    l->setVisible(cb->isChecked());
  else
    qDebug() << LOGFUNCTION << " no layer!!!, layername=" << layername;
}

void SimpleEsriLayer::opacity(int)
{
  SimpleEsriLayerSlider *sl = qobject_cast<SimpleEsriLayerSlider *>(sender());
  if (!sl)
    return;

  QString layername = sl->m_layername;
  double value = sl->value() / 100.0;

  Esri::ArcGISRuntime::Layer *l = getEsriBasemap_Layer(d->m_map, layername);
  if (l)
  {
    qDebug() << LOGFUNCTION << " layername=" << layername << " set to val=" << value;
    l->setOpacity(value);
  }
  else
    qWarning() << LOGFUNCTION << " no layer!!!, layername=" << layername;
}

void SimpleEsriLayer::brightness(int)
{
  SimpleEsriLayerSlider *sl = qobject_cast<SimpleEsriLayerSlider *>(sender());
  if (!sl)
    return;

  QString layername = sl->m_layername;
  Esri::ArcGISRuntime::ArcGISTiledLayer *l = getEsriBasemap_ArcGISTiledLayer(d->m_map, layername);

  double value = sl->value() / 100.0;
//  double value = sl->value();

  qDebug() << LOGFUNCTION << " layername=" << layername << " set to val=" << value;

  l->setBrightness(value);
}

void SimpleEsriLayer::contrast(int)
{
  SimpleEsriLayerSlider *sl = qobject_cast<SimpleEsriLayerSlider *>(sender());
  if (!sl)
    return;

  QString layername = sl->m_layername;
  Esri::ArcGISRuntime::ArcGISTiledLayer *l = getEsriBasemap_ArcGISTiledLayer(d->m_map, layername);

  double value = sl->value() / 100.0;
//  double value = sl->value();

  qDebug() << LOGFUNCTION << " layername=" << layername << " set to val=" << value;

  l->setContrast(value);
}

void SimpleEsriLayer::gamma(int)
{
  SimpleEsriLayerSlider *sl = qobject_cast<SimpleEsriLayerSlider *>(sender());
  if (!sl)
    return;

  QString layername = sl->m_layername;
  Esri::ArcGISRuntime::ArcGISTiledLayer *l = getEsriBasemap_ArcGISTiledLayer(d->m_map, layername);

  double value = sl->value() / 100.0;
//  double value = sl->value();

  qDebug() << LOGFUNCTION << " layername=" << layername << " set to val=" << value;

  l->setGamma(value);
}

} // namespace SituationMap