#include "IfConditionModel.hpp"

#include <QtCore/QJsonValue>
#include <QtCore/QDebug>

#include <QtGui/QDoubleValidator>

#include <QtWidgets/QWidget>
#include <QtWidgets/QFormLayout>
#include <QtWidgets/QLabel>

#include "ExpressionRangeData.hpp"
#include "ExpressionBoolData.hpp"

IfConditionModel::
IfConditionModel()
{
  _widget = new QWidget();

  auto l = new QFormLayout();

  //-------------

  _ifLabel = new QLabel();
  _ifLabel->setMargin(3);
  _ifLabel->setFrameStyle(QFrame::Panel | QFrame::Sunken);

  //-------------

  _thenLabel = new QLabel();
  _thenLabel->setMargin(3);
  _thenLabel->setFrameStyle(QFrame::Panel | QFrame::Sunken);

  //-------------

  _elseLabel = new QLabel();
  _elseLabel->setMargin(3);
  _elseLabel->setFrameStyle(QFrame::Panel | QFrame::Sunken);

  //-------------

  _variableLabel = new QLabel();
  _variableLabel->setMargin(3);
  _variableLabel->setFrameStyle(QFrame::Panel | QFrame::Sunken);

  //-------------

  _rangeLabel = new QLabel();
  _rangeLabel->setMargin(3);
  _rangeLabel->setFrameStyle(QFrame::Panel | QFrame::Sunken);

  l->addRow("If:", _ifLabel);
  l->addRow("Then:", _thenLabel);
  l->addRow("Else:", _elseLabel);
  l->addRow("Expression:", _variableLabel);
  l->addRow("Range:", _rangeLabel);

  _widget->setLayout(l);
}


QJsonObject
IfConditionModel::
save() const
{
  QJsonObject modelJson = NodeDataModel::save();

#if 0
  if (_expression)
    modelJson["expression"] = _expression->expression();

#endif
  return modelJson;
}


void
IfConditionModel::
restore(QJsonObject const &p)
{
  QJsonValue v = p["expression"];

#if 0
  if (!v.isUndefined())
  {
    QString str = v.toString();

    _expression = std::make_shared<ExpressionRangeData>(str);
    _lineEdit->setText(str);
  }

#endif
}


unsigned int
IfConditionModel::
nPorts(PortType portType) const
{
  unsigned int result = 1;

  switch (portType)
  {
    case PortType::In:
      result = 3;
      break;

    case PortType::Out:
      result = 1;

    default:
      break;
  }

  return result;
}


void
IfConditionModel::
onFunctionIndexChanged(int index)
{
  Q_UNUSED(index);

  processData();
}


void
IfConditionModel::
setInData(std::shared_ptr<NodeData> data, PortIndex portIndex)
{
  switch (portIndex)
  {
    case 0:
    {
      _input0 = std::dynamic_pointer_cast<ExpressionBoolData>(data);
      break;
    }

    case 1:
    {
      _input1 = std::dynamic_pointer_cast<ExpressionRangeData>(data);
      break;
    }

    case 2:
    {
      _input2 = std::dynamic_pointer_cast<ExpressionRangeData>(data);
      break;
    }
  }

  processData();
}


QWidget *
IfConditionModel::
embeddedWidget()
{
  return _widget;
}


QString
IfConditionModel::
convertBoolRangeToText(std::vector<bool> const &range) const
{
  QString result("(");

  for (std::size_t i = 0; i < range.size() - 1; ++i)
  {
    result = result + (range[i] ? "t" : "f") + ", ";
  }

  result = result + (range.back() ? "t" : "f") + ")";

  return result;
}


QString
IfConditionModel::
convertRangeToText(std::vector<double> const &range) const
{
  QString result("(");

  for (std::size_t i = 0; i < range.size() - 1; ++i)
  {
    result = result + QString::number(range[i]) + ", ";
  }

  result = result + QString::number(range.back()) + ")";

  return result;
}


std::vector<double>
IfConditionModel::
applyFunction(std::vector<bool> const &range0,
              std::vector<double> const &range1,
              std::vector<double> const &range2) const
{
  std::vector<double> result;

  for (std::size_t i = 0; i < range0.size(); ++i)
  {
    result.push_back( range0[i] ? range1[i] : range2[i]);
  }

  return result;
}


void
IfConditionModel::
processData()
{
  auto n0 = _input0.lock();
  auto n1 = _input1.lock();
  auto n2 = _input2.lock();

  if (n0 && n1 && n2)
  {
    QString input0 = n0->expression();
    QString input1 = n1->expression();
    QString input2 = n2->expression();

    std::vector<bool> const   & inputRange0 = n0->range();
    std::vector<double> const & inputRange1 = n1->range();
    std::vector<double> const & inputRange2 = n2->range();

    _ifLabel->setText(convertBoolRangeToText(inputRange0));
    _thenLabel->setText(convertRangeToText(inputRange1));
    _elseLabel->setText(convertRangeToText(inputRange2));

    if ((inputRange1.size() != inputRange2.size()) ||
        (inputRange0.size() != inputRange2.size()))
    {
      _expression = std::make_shared<ExpressionRangeData>();

      emit dataInvalidated(0);

      return;
    }

    std::vector<double> modifiedRange = applyFunction(inputRange0, inputRange1, inputRange2);

    QString tt(" ( (%1) ? %2 : %3 ) ");

    _expression = std::make_shared<ExpressionRangeData>(tt.arg(input0, input1, input2),
                                                        modifiedRange);

    _variableLabel->setText(_expression->expression());
    _variableLabel->adjustSize();

    _rangeLabel->setText(convertRangeToText(modifiedRange));
    _rangeLabel->adjustSize();

    emit dataUpdated(0);
  }
}


NodeDataType
IfConditionModel::
dataType(PortType portType, PortIndex index) const
{
  switch (portType)
  {
    case PortType::In:
      if (index == 0)
        return ExpressionBoolData().type();
      else
        return ExpressionRangeData().type();

      break;

    case PortType::Out:
      return ExpressionRangeData().type();
      break;
  }
}


std::shared_ptr<NodeData>
IfConditionModel::
outData(PortIndex)
{
  return _expression;
}