//                                               -*- C++ -*-
/**
 *  @brief QWizardPage to define the type of design of experiments
 *
 *  Copyright 2015-2026 EDF-Phimeca
 *
 *  This library is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this library.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
#include "persalys/DesignOfExperimentIntroPage.hxx"

#include "persalys/DesignOfExperimentEvaluation.hxx"
#include "persalys/DesignOfExperimentWizard.hxx"

#include <QVBoxLayout>
#include <QGroupBox>
#include <QRadioButton>
#include <QLabel>

using namespace OT;

namespace PERSALYS
{

DesignOfExperimentIntroPage::DesignOfExperimentIntroPage(QWidget* parent)
  : QWizardPage(parent)
  , methodGroup_(0)
{
  setTitle(tr("Input sample definition"));

  QVBoxLayout * pageLayout = new QVBoxLayout(this);

  QGroupBox * methodBox = new QGroupBox(tr("Type of design of experiments"));
  QVBoxLayout * methodLayout = new QVBoxLayout(methodBox);

  methodGroup_ = new QButtonGroup(this);

  // Deterministic
  QRadioButton * deterministicButton = new QRadioButton(tr("Full factorial design"));
  methodGroup_->addButton(deterministicButton, DesignOfExperimentIntroPage::Deterministic);
  methodLayout->addWidget(deterministicButton);

  // Probabilistic
  QRadioButton * probaButton = new QRadioButton(tr("Probabilistic design"));
  methodGroup_->addButton(probaButton, DesignOfExperimentIntroPage::Probabilistic);
  methodLayout->addWidget(probaButton);

  // import
  QRadioButton * importButton = new QRadioButton(tr("Imported design"));
  methodGroup_->addButton(importButton, DesignOfExperimentIntroPage::Import);
  methodLayout->addWidget(importButton);

  pageLayout->addWidget(methodBox);

  // register fields
  registerField("deterministicButton", deterministicButton);
  registerField("probaButton", probaButton);
  registerField("importButton", importButton);

  probaButton->setChecked(true);
}


void DesignOfExperimentIntroPage::initialize(const Analysis& analysis) const
{
  const auto * analysis_ptr = dynamic_cast<const DesignOfExperimentEvaluation*>(analysis.getImplementation().get());
  if (!analysis_ptr)
    return;

  if (!analysis_ptr->getPhysicalModel().hasStochasticInputs())
  {
    methodGroup_->button(DesignOfExperimentIntroPage::Probabilistic)->setToolTip(tr("The physical model has no stochastic inputs"));
    methodGroup_->button(DesignOfExperimentIntroPage::Probabilistic)->setEnabled(false);
    methodGroup_->button(DesignOfExperimentIntroPage::Deterministic)->setChecked(true);
  }

  if (const auto * grid_doe = dynamic_cast<const GridDesignOfExperiment*>(analysis_ptr); grid_doe)
  {
    methodGroup_->button(DesignOfExperimentIntroPage::Deterministic)->setChecked(true);
    return;
  }

  if (const auto * import_doe = dynamic_cast<const ImportedDesignOfExperiment*>(analysis_ptr); import_doe)
  {
    methodGroup_->button(DesignOfExperimentIntroPage::Import)->setChecked(true);
  }
}


int DesignOfExperimentIntroPage::getMethodId() const
{
  return methodGroup_->checkedId();
}


int DesignOfExperimentIntroPage::nextId() const
{
  int nextId = DesignOfExperimentWizard::Page_Probabilistic;;
  switch (DesignOfExperimentIntroPage::Method(methodGroup_->checkedId()))
  {
    case DesignOfExperimentIntroPage::Deterministic:
      nextId = DesignOfExperimentWizard::Page_Deterministic;
      break;

    case DesignOfExperimentIntroPage::Probabilistic:
      nextId = DesignOfExperimentWizard::Page_Probabilistic;
      break;
    
    case DesignOfExperimentIntroPage::Import:
      nextId = DesignOfExperimentWizard::Page_Import;
  }

  return nextId;
}
}
