#include <QApplication>
#include <QDialog>
#include <QPushButton>
#include <QVBoxLayout>
#include <QLabel>
#include <LtsCoordTrans/lts_coord_trans.h>
#include "lts_coord_widget.h"

static void updateLabel(const QPointF &coord, QLabel *lbl, int prec)
{
  QString mgrs = LtsCoordTrans::mgrsFromGeographic(coord.x(), coord.y(), prec);
  QString str = QStringLiteral("mgrs: %1, lon: %2, lat: %3")
                .arg(mgrs)
                .arg(coord.x() * LtsCoordTrans::rad2deg(), 0, 'f', 10)
                .arg(coord.y() * LtsCoordTrans::rad2deg(), 0, 'f', 10);
  lbl->setText(str);
}

int main(int argc, char **argv)
{
  QApplication app(argc, argv);

  LtsCoordTrans::UtmCoordinate base(LtsCoordTrans::UtmCoordinate::fromMgrs(QStringLiteral("32UMD00")));
  QPointF topLeft(base.geographic(+50000, -50000));
  QPointF bottomRight(base.geographic(-50000, 50000));
  LtsCoordTrans::getMgrsSquares(QRectF(topLeft, bottomRight), true, true);

  QDialog *dialog(new QDialog);
  QVBoxLayout *lay(new QVBoxLayout(dialog));


  const QPointF defCoord(QPointF(53.0, 8.0) * LtsCoordTrans::deg2rad());
  
  LtsCoordWidget::LtsCoordWidget *wMgrs5(new LtsCoordWidget::LtsCoordWidget(LtsCoordWidget::LtsCoordWidget::DisplayType::MGRS, dialog));
  wMgrs5->setWithResetButton(true);
  wMgrs5->setCoordinate(defCoord, true);
  lay->addWidget(wMgrs5);
  QLabel *lbl5(new QLabel(dialog));
  lay->addWidget(lbl5);
  QObject::connect(wMgrs5, &LtsCoordWidget::LtsCoordWidget::coordinateChanged,
                   lbl5, [lbl5](const QPointF & coord)
  {
    updateLabel(coord, lbl5, 5);
  });

  
  LtsCoordWidget::LtsCoordWidget *wMgrs7(new LtsCoordWidget::LtsCoordWidget(LtsCoordWidget::LtsCoordWidget::DisplayType::MGRS7, dialog));
  wMgrs7->setWithResetButton(true);
  wMgrs7->setCoordinate(defCoord, true);
  lay->addWidget(wMgrs7);
  QLabel *lbl7(new QLabel(dialog));
  lay->addWidget(lbl7);
  QObject::connect(wMgrs7, &LtsCoordWidget::LtsCoordWidget::coordinateChanged,
                   wMgrs7, [lbl7](const QPointF & coord)
  {
    updateLabel(coord, lbl7, 7);
  });

  
  LtsCoordWidget::LtsCoordWidget *w84(new LtsCoordWidget::LtsCoordWidget(LtsCoordWidget::LtsCoordWidget::DisplayType::WGS84, dialog));
  w84->setWithResetButton(true);
  w84->setCoordinate(defCoord, true);
  lay->addWidget(w84);
  QLabel *lbl84(new QLabel(dialog));
  lay->addWidget(lbl84);
  QObject::connect(w84, &LtsCoordWidget::LtsCoordWidget::coordinateChanged,
                   w84, [lbl84](const QPointF & coord)
  {
    updateLabel(coord, lbl84, 11);
  });

  
  QHBoxLayout *hLay = new QHBoxLayout;
  lay->addLayout(hLay);
  LtsCoordWidget::LtsCoordWidget *wChange(new LtsCoordWidget::LtsCoordWidget(LtsCoordWidget::LtsCoordWidget::DisplayType::WGS84, dialog));
  wChange->setWithResetButton(true);
  wChange->setCoordinate(defCoord, true);
  hLay->addWidget(wChange);
  QPushButton *pbReset(new QPushButton(QStringLiteral("With Reset"), dialog));
  hLay->addWidget(pbReset);
  QObject::connect(pbReset, &QPushButton::clicked,
                   wChange, [wChange]() { wChange->setWithResetButton(!wChange->withResetButton());});
  QPushButton *pbNext(new QPushButton(QStringLiteral("Next Type"), dialog));
  hLay->addWidget(pbNext);
  QObject::connect(pbNext, &QPushButton::clicked,
                   wChange, [wChange]()
  {
    LtsCoordWidget::LtsCoordWidget::DisplayType dt = wChange->displayType();
    switch (dt)
    {
    case LtsCoordWidget::LtsCoordWidget::DisplayType::MGRS5:
      dt = LtsCoordWidget::LtsCoordWidget::DisplayType::MGRS7; break;
    case LtsCoordWidget::LtsCoordWidget::DisplayType::MGRS7:
      dt = LtsCoordWidget::LtsCoordWidget::DisplayType::WGS84; break;
    case LtsCoordWidget::LtsCoordWidget::DisplayType::WGS84:
      dt = LtsCoordWidget::LtsCoordWidget::DisplayType::MGRS5; break;
    default:
      break;
    }
    wChange->setDisplayType(dt);
  });


  QPushButton *pb(new QPushButton(QStringLiteral("Quit"), dialog));
  lay->addWidget(pb);
  QObject::connect(pb, &QPushButton::clicked, qApp, QCoreApplication::quit);

  dialog->show();
  int ret = app.exec();
  delete dialog;
  return ret;
}