#include "lts_coord_widget.h"
#include "lts_coord_widget_p.h"

#include <LtsCoordTrans/lts_coord_trans.h>
#include <QToolButton>

namespace LtsCoordWidget
{

LtsCoordWidget::LtsCoordWidget(DisplayType dt, QWidget *parent)
  : QWidget(parent)
  , m_displayType(dt)
{
  setFocusPolicy(Qt::StrongFocus);
  rebuildUi();
}

void LtsCoordWidget::setCoordinate(const QPointF &geoCoord, bool bUseAsDefaultValue)
{
  if (m_coordinate != geoCoord)
    emit coordinateChanged(geoCoord);
  if (bUseAsDefaultValue)
    m_defaultCoordinate = geoCoord;
  if (m_inputWidgetHandler)
    m_inputWidgetHandler->setCoordinate(geoCoord);
}

void LtsCoordWidget::clear()
{
  if (m_inputWidgetHandler)
    m_inputWidgetHandler->clear();
}

void LtsCoordWidget::setCoordinate(double lon, double lat, bool bUseAsDefaultValue)
{
  setCoordinate(QPointF(lon, lat), bUseAsDefaultValue);
}

QPointF LtsCoordWidget::coordinate() const
{
  if (!m_inputWidgetHandler)
    return QPointF();
  return m_inputWidgetHandler->coordinate();
}


LtsCoordWidget::DisplayType LtsCoordWidget::displayType() const
{
  return m_displayType;
}

void LtsCoordWidget::setDisplayType(LtsCoordWidget::DisplayType dt)
{
  if (m_displayType == dt)
    return;
  m_displayType = dt;
  rebuildUi();
}

bool LtsCoordWidget::withResetButton() const
{
  return m_bWithResetButton;
}

void LtsCoordWidget::setWithResetButton(bool bWith)
{
  if (m_bWithResetButton == bWith)
    return;
  m_bWithResetButton = bWith;
  if (m_inputWidgetHandler)
    m_inputWidgetHandler->resetButton()->setVisible(m_bWithResetButton);
}

bool LtsCoordWidget::showToolTip() const
{
  return m_bShowToolTip;
}

void LtsCoordWidget::setShowToolTip(bool bShow)
{
  if (m_bShowToolTip == bShow)
    return;
  m_bShowToolTip = bShow;

  updateToolTip();
}

bool LtsCoordWidget::mgrsSquareEditable() const
{
  return m_bMgrsSquareEditable;
}

void LtsCoordWidget::setMgrsSquareEditable(bool bEditable)
{
  if (m_bMgrsSquareEditable == bEditable)
    return;
  m_bMgrsSquareEditable = bEditable;
  if (m_inputWidgetHandler)
    m_inputWidgetHandler->setSquaresEditable(bEditable);
}

void LtsCoordWidget::setWithSurroundingMgrsSquares(bool bEnable)
{
  if (m_inputWidgetHandler)
    m_inputWidgetHandler->setWithSurroundingSquare(bEnable);
}

void LtsCoordWidget::setMgrsSquares(const QVector<LtsCoordTrans::UtmCoordinate> &geoCoords)
{
  if (m_inputWidgetHandler)
    m_inputWidgetHandler->setMgrsSquares(geoCoords);
}


bool LtsCoordWidget::event(QEvent *event)
{
  if (event->type() == QEvent::ToolTip)
    updateToolTip();
  return QWidget::event(event);
}


void LtsCoordWidget::rebuildUi()
{
  
  
  
  
  if (m_inputWidgetHandler)
  {
    m_inputWidgetHandler->cleanup();
    delete m_inputWidgetHandler;
    delete layout();
  }

  switch (m_displayType)
  {
  case DisplayType::MGRS5:
    m_inputWidgetHandler = new MgrsEdit(5, this);
    break;
  case DisplayType::MGRS7:
    m_inputWidgetHandler = new MgrsEdit(7, this);
    break;
  case DisplayType::UTM:
    
    qt_assert("DisplayType::UTM not yet implemented", __FILE__, __LINE__);
    break;
  case DisplayType::WGS84:
    m_inputWidgetHandler = new Wgs84Edit(this);
    break;
  }
  if (!m_inputWidgetHandler)
    return;

  m_inputWidgetHandler->setSquaresEditable(m_bMgrsSquareEditable);
  m_inputWidgetHandler->resetButton()->setVisible(m_bWithResetButton);
  connect(m_inputWidgetHandler->resetButton(), &QToolButton::clicked,
          this, &LtsCoordWidget::onResetToDefaultCoordinate);
  connect(m_inputWidgetHandler, &LtsCoordInputWidgetHandler::coordinateChanged,
          this, &LtsCoordWidget::coordinateChanged);
  connect(m_inputWidgetHandler, &LtsCoordInputWidgetHandler::invalidCoordinate,
          this, &LtsCoordWidget::invalidCoordinate);
  if (!m_defaultCoordinate.isNull())
    m_inputWidgetHandler->setCoordinate(m_defaultCoordinate);
}

void LtsCoordWidget::updateToolTip()
{
  QString tt;
  if (m_bShowToolTip)
  {
    const QPointF p(coordinate());
    if (!p.isNull())
    {
      const QString mgrs = LtsCoordTrans::mgrsFromGeographic(p.x(), p.y());
      const QPointF p2(p * LtsCoordTrans::rad2deg());
      tt = tr("MGRS: %1\nlat/lon: %2/%3").arg(mgrs).arg(p2.y(), 0, 'f', 10).arg(p2.x(), 0, 'f', 10);
    }
  }
  setToolTip(tt);
}


void LtsCoordWidget::onResetToDefaultCoordinate()
{
  if (!m_inputWidgetHandler)
    return;
  if (m_defaultCoordinate.isNull())
    m_inputWidgetHandler->clear();
  m_inputWidgetHandler->setCoordinate(m_defaultCoordinate);
}

}