#pragma once

#include <QWidget>
#include <QComboBox>
#include <QVBoxLayout>
#include <LtsCoordTrans/lts_coord_trans.h>

#include "ui_lts_coord_widget_mgrs.h"
#include "ui_lts_coord_widget_wgs84.h"

namespace LtsCoordWidget
{
class LtsCoordInputWidgetHandler : public QObject
{
  Q_OBJECT
public:
  explicit LtsCoordInputWidgetHandler(QObject *parent)
    : QObject(parent)
  {}

  virtual bool isValid() = 0;  
  virtual void setCoordinate(const QPointF &geoCoord) = 0;
  virtual QPointF coordinate() const = 0;
  virtual QToolButton *resetButton() = 0;
  virtual void cleanup() = 0;
  virtual void clear() = 0;
  virtual void setSquaresEditable(bool bEditable) = 0;
  virtual void setWithSurroundingSquare(bool bEnabled) = 0;
  virtual void setMgrsSquares(const QVector<LtsCoordTrans::UtmCoordinate> &geoCoords) = 0;
protected Q_SLOTS:
  void onCoordinateDataChanged();
Q_SIGNALS:
  void coordinateChanged(const QPointF &newGeoCoord);
  void invalidCoordinate();
};

class MgrsEdit final : public LtsCoordInputWidgetHandler
{
  Q_OBJECT
public:
  explicit MgrsEdit(int precision, QWidget *widget);
  ~MgrsEdit();

  bool isValid() override;
  void setCoordinate(const QPointF &geoCoord) override;
  QPointF coordinate() const override;
  QToolButton *resetButton() override;
  void cleanup() override;
  void clear() override;
  void setSquaresEditable(bool bEditable) override;
  void setWithSurroundingSquare(bool bEnabled) override;
  void setMgrsSquares(const QVector<LtsCoordTrans::UtmCoordinate> &geoCoords) override;
private:
  void setDefaultMgrsSquares();
  void addMgrsSquare(const QString &newMgrsSquare);
  QStringList utmCoordsToList(const QVector<LtsCoordTrans::UtmCoordinate> &coords);
private:
  int m_precision;
  bool m_withMgrsSquareOffset=false;
  Ui::Mgrs *m_ui;
};

class Wgs84Edit final : public LtsCoordInputWidgetHandler
{
  Q_OBJECT
public:
  explicit Wgs84Edit(QWidget *widget);
  ~Wgs84Edit();

  bool isValid() override;
  void setCoordinate(const QPointF &geoCoord) override;
  QPointF coordinate() const override;
  QToolButton *resetButton() override;
  void cleanup() override;
  void clear() override;
  void setSquaresEditable(bool bEditable) override { Q_UNUSED(bEditable); }
  void setWithSurroundingSquare(bool bEnabled) override { Q_UNUSED(bEnabled); }
  void setMgrsSquares(const QVector<LtsCoordTrans::UtmCoordinate> &geoCoords) override { Q_UNUSED(geoCoords); }
private:
  Ui::Wgs84 *m_ui;
};

class DoubleValidator final : public QDoubleValidator
{
  Q_OBJECT
public:
  DoubleValidator(double bottom, double top, int decimals, QObject *parent = nullptr);

  QValidator::State validate(QString &input, int &pos) const override;
};
}