/***************************************************************************
 *   Copyright (c) 2013 Jan Rheinländer                                    *
 *                                   <jrheinlaender@users.sourceforge.net> *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 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 Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/


#include <QMessageBox>
#include <Standard_Failure.hxx>


#include <App/DocumentObject.h>
#include <App/Origin.h>
#include <App/Part.h>
#include <Gui/MainWindow.h>
#include <Gui/ViewProvider.h>
#include <Gui/Selection/Selection.h>
#include <Mod/Part/App/DatumFeature.h>
#include <Mod/PartDesign/App/Body.h>

#include <ui_DlgReference.h>

#include "TaskDatumParameters.h"
#include "ReferenceSelection.h"
#include "TaskFeaturePick.h"
#include "Utils.h"

using namespace PartDesignGui;
using namespace Gui;
using namespace Attacher;

/* TRANSLATOR PartDesignGui::TaskDatumParameters */

TaskDatumParameters::TaskDatumParameters(ViewProviderDatum* ViewProvider, QWidget* parent)
    : PartGui::TaskAttacher(
          ViewProvider,
          parent,
          QStringLiteral("PartDesign_") + ViewProvider->datumType,
          ViewProvider->datumMenuText
      )
{
    Gui::Selection().addSelectionGate(new NoDependentsSelection(ViewProvider->getObject()));
    ViewProvider->setPickable(false);
}

TaskDatumParameters::~TaskDatumParameters()
{
    if (this->ViewProvider && this->ViewProvider->isDerivedFrom<ViewProviderDatum>()) {
        static_cast<ViewProviderDatum*>(this->ViewProvider)->setPickable(true);
    }
    Gui::Selection().rmvSelectionGate();
}


//**************************************************************************
//**************************************************************************
// TaskDialog
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

TaskDlgDatumParameters::TaskDlgDatumParameters(ViewProviderDatum* ViewProvider)
    : TaskDlgAttacher(ViewProvider, false)
{
    assert(ViewProvider);
    parameter = new TaskDatumParameters(ViewProvider);
    Content.push_back(parameter);
}

TaskDlgDatumParameters::~TaskDlgDatumParameters() = default;

bool TaskDlgDatumParameters::reject()
{

    return PartGui::TaskDlgAttacher::reject();
}


bool TaskDlgDatumParameters::accept()
{

    Part::Datum* pcDatum = ViewProvider->getObject<Part::Datum>();
    auto pcActiveBody = PartDesignGui::getBodyFor(pcDatum, false);
    auto pcActivePart = PartDesignGui::getPartFor(pcActiveBody, false);
    std::vector<App::DocumentObject*> copies;

    // see if we are able to assign a mode
    if (parameter->getActiveMapMode() == mmDeactivated) {
        QMessageBox msg(Gui::getMainWindow());
        msg.setWindowTitle(tr("Incompatible Reference Set"));
        msg.setText(
            tr("There is no attachment mode that fits the current set"
               " of references. If you choose to continue, the feature will remain where"
               " it is now, and will not be moved as the references change."
               " Continue?")
        );
        msg.addButton(QMessageBox::Yes);
        auto btNo = msg.addButton(QMessageBox::No);
        msg.setDefaultButton(btNo);
        msg.setIcon(QMessageBox::Warning);
        msg.exec();
        if (msg.buttonRole(msg.clickedButton()) == QMessageBox::NoRole) {
            return false;
        }
    }

    // see what to do with external references
    // check the prerequisites for the selected objects
    // the user has to decide which option we should take if external references are used
    bool extReference = false;
    for (App::DocumentObject* obj : pcDatum->AttachmentSupport.getValues()) {
        if (pcActiveBody && !pcActiveBody->hasObject(obj)
            && !pcActiveBody->getOrigin()->hasObject(obj)) {
            extReference = true;
        }
    }

    if (extReference) {
        // TODO: rewrite this to be shared with CmdPartDesignNewSketch::activated() (2015-10-20, Fat-Zer)
        QDialog dia(Gui::getMainWindow());
        PartDesignGui::Ui_DlgReference dlg;
        dlg.setupUi(&dia);
        dia.setModal(true);
        int result = dia.exec();
        if (result == QDialog::DialogCode::Rejected) {
            return false;
        }
        else if (!dlg.radioXRef->isChecked()) {
            std::vector<App::DocumentObject*> copyObjects;
            std::vector<std::string> copySubValues;
            std::vector<std::string> subs = pcDatum->AttachmentSupport.getSubValues();
            int index = 0;
            for (App::DocumentObject* obj : pcDatum->AttachmentSupport.getValues()) {
                if (pcActiveBody && !pcActiveBody->hasObject(obj)
                    && !pcActiveBody->getOrigin()->hasObject(obj)) {
                    auto* copy = PartDesignGui::TaskFeaturePick::makeCopy(
                        obj,
                        subs[index],
                        dlg.radioIndependent->isChecked()
                    );
                    if (copy) {
                        copyObjects.push_back(copy);
                        copies.push_back(copyObjects.back());
                        copySubValues.emplace_back();
                    }
                }
                else {
                    copyObjects.push_back(obj);
                    copySubValues.push_back(subs[index]);
                }

                index++;
            }

            pcDatum->AttachmentSupport.setValues(copyObjects, copySubValues);
        }
    }

    if (!PartGui::TaskDlgAttacher::accept()) {
        return false;
    }

    // we need to add the copied features to the body after the command action, as otherwise FreeCAD
    // crashes unexplainably
    for (auto obj : copies) {
        if (pcActiveBody) {
            pcActiveBody->addObject(obj);
        }
        else if (pcActivePart) {
            pcActivePart->addObject(obj);
        }
    }

    return true;
}

#include "moc_TaskDatumParameters.cpp"