/****************************************************************************
 Copyright (C) 2010-2012 the Office National des Forêts (ONF), France
                         All rights reserved.

 Contact : alexandre.piboule@onf.fr

 Developers : Alexandre PIBOULE (ONF)

 This file is part of PluginONF library.

 PluginONF is free library: 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.

 PluginONF 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 General Public License for more details.

 You should have received a copy of the GNU Lesser General Public License
 along with PluginONF.  If not, see <http://www.gnu.org/licenses/lgpl.html>.
*****************************************************************************/

#include "onf_stepselectgroupsbyreferenceheight.h"

#include <QMessageBox>

ONF_StepSelectGroupsByReferenceHeight::ONF_StepSelectGroupsByReferenceHeight() : SuperClass()
{
    _hRef = 1.3;
}

QString ONF_StepSelectGroupsByReferenceHeight::description() const
{
    return tr("Filter des items dans une tranche de hauteur depuis un MNT");
}

QString ONF_StepSelectGroupsByReferenceHeight::detailledDescription() const
{
    return tr("");
}

QString ONF_StepSelectGroupsByReferenceHeight::inputDescription() const
{
    return SuperClass::inputDescription() + tr("<br><br>");
}

QString ONF_StepSelectGroupsByReferenceHeight::outputDescription() const
{
    return SuperClass::outputDescription() + tr("<br><br>");
}

QString ONF_StepSelectGroupsByReferenceHeight::detailsDescription() const
{
    return tr("");
}

CT_VirtualAbstractStep* ONF_StepSelectGroupsByReferenceHeight::createNewInstance() const
{
    return new ONF_StepSelectGroupsByReferenceHeight();
}

//////////////////// PROTECTED METHODS //////////////////

void ONF_StepSelectGroupsByReferenceHeight::declareInputModels(CT_StepInModelStructureManager& manager)
{
    manager.addResult(_inResult, tr("Items"));
    manager.setZeroOrMoreRootGroup(_inResult, _inZeroOrMoreRootGroup);
    manager.addGroup(_inZeroOrMoreRootGroup, _inGroup);
    manager.addItem(_inScBase, _inDtmValue, tr("MNT"));
    manager.addGroup(_inScBase, _inGroup);
    manager.addItem(_inGroup, _inItem, tr("Item"));
}

void ONF_StepSelectGroupsByReferenceHeight::declareOutputModels(CT_StepOutModelStructureManager& manager)
{
    manager.addResultCopy(_inResult);
}

void ONF_StepSelectGroupsByReferenceHeight::fillPostInputConfigurationDialog(CT_StepConfigurableDialog* postInputConfigDialog)
{  
    postInputConfigDialog->addDouble(tr("Hauteur de référence"), "m", 0, std::numeric_limits<double>::max(), 2, _hRef);
}

void ONF_StepSelectGroupsByReferenceHeight::compute()
{
    QList<CT_StandardItemGroup*> groupsToRemove;

    for (CT_StandardItemGroup* baseGroup : _inScBase.iterateOutputs(_inResult))
    {
        const CT_ReferencePoint *dtmRefPoint = baseGroup->singularItem(_inDtmValue);

        if (dtmRefPoint != nullptr)
        {
            double href = dtmRefPoint->centerZ() + _hRef;

            double zmin = std::numeric_limits<double>::max();
            double zmax = -std::numeric_limits<double>::max();

            for (const CT_StandardItemGroup* group : baseGroup->groups(_inGroup))
            {
                for (const CT_AbstractSingularItemDrawable* item : group->singularItems(_inItem))
                {
                    if (isStopped()) {return;}

                    if (item != nullptr)
                    {
                        if (item->centerZ() < zmin) {zmin = item->centerZ();}
                        if (item->centerZ() > zmax) {zmax = item->centerZ();}
                    }
                }
            }

            if (zmin > href || zmax < href)
            {
                groupsToRemove.append(baseGroup);
            }
        }

    }

    // we remove the parent group of all ItemDrawable that must be deleted from the out result
    // and all groups that don't contains a ItemDrawable researched
    QListIterator<CT_StandardItemGroup*> itE(groupsToRemove);

    while(itE.hasNext())
    {
        CT_StandardItemGroup *group = itE.next();
        group->removeFromParent(false);
    }

}