/************************************************************************
 **
 **  @file
 **  @author Roman Telezhynskyi <dismine(at)gmail.com>
 **  @date   24 11, 2016
 **
 **  @brief
 **  @copyright
 **  This source code is part of the Valentina project, a pattern making
 **  program, whose allow create and modeling patterns of clothing.
 **  Copyright (C) 2016 Valentina project
 **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
 **
 **  Valentina is free software: you can redistribute it and/or modify
 **  it under the terms of the GNU General Public License as published by
 **  the Free Software Foundation, either version 3 of the License, or
 **  (at your option) any later version.
 **
 **  Valentina 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 General Public License
 **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
 **
 *************************************************************************/

#include "vtoolpiecepath.h"
#include "../../dialogs/tools/piece/dialogpiecepath.h"
#include "../vpatterndb/vpiecepath.h"
#include "../vpatterndb/vpiecenode.h"
#include "../../undocommands/savepieceoptions.h"
#include "../vtoolseamallowance.h"
#include "../ifc/xml/vabstractpattern.h"

//---------------------------------------------------------------------------------------------------------------------
VToolPiecePath *VToolPiecePath::Create(const QPointer<DialogTool> &dialog, VMainGraphicsScene *scene,
                                       VAbstractPattern *doc, VContainer *data)
{
    SCASSERT(not dialog.isNull());
    const QPointer<DialogPiecePath> dialogTool = qobject_cast<DialogPiecePath *>(dialog);
    SCASSERT(not dialogTool.isNull())

    VToolPiecePathInitData initData;
    initData.path = dialogTool->GetPiecePath();
    initData.idObject = dialogTool->GetPieceId();
    initData.scene = scene;
    initData.doc = doc;
    initData.data = data;
    initData.parse = Document::FullParse;
    initData.typeCreation = Source::FromGui;

    initData.path.SetNodes(PrepareNodes(initData.path, scene, doc, data));

    VToolPiecePath *pathTool = Create(initData);
    return pathTool;
}

//---------------------------------------------------------------------------------------------------------------------
VToolPiecePath *VToolPiecePath::Create(VToolPiecePathInitData initData)
{
    if (initData.typeCreation == Source::FromGui)
    {
        initData.id = initData.data->AddPiecePath(initData.path);
    }
    else
    {
        initData.data->UpdatePiecePath(initData.id, initData.path);
        if (initData.parse != Document::FullParse)
        {
            initData.doc->UpdateToolData(initData.id, initData.data);
        }
    }

    if (initData.parse == Document::FullParse)
    {
        VAbstractTool::AddRecord(initData.id, Tool::PiecePath, initData.doc);
        //TODO Need create garbage collector and remove all nodes, that we don't use.
        //Better check garbage before each saving file. Check only modeling tags.
        VToolPiecePath *pathTool = new VToolPiecePath(initData);

        VAbstractPattern::AddTool(initData.id, pathTool);
        if (initData.idTool != NULL_ID)
        {
            //Some nodes we don't show on scene. Tool that create this nodes must free memory.
            VDataTool *tool = VAbstractPattern::getTool(initData.idTool);
            SCASSERT(tool != nullptr);
            pathTool->setParent(tool);// Adopted by a tool
        }
        else
        {
            if (initData.typeCreation == Source::FromGui && initData.path.GetType() == PiecePathType::InternalPath)
            { // Seam allowance tool already initializated and can't init the path
                SCASSERT(initData.idObject > NULL_ID);
                VToolSeamAllowance *saTool =
                        qobject_cast<VToolSeamAllowance*>(VAbstractPattern::getTool(initData.idObject));
                SCASSERT(saTool != nullptr);
                pathTool->setParentItem(saTool);
                pathTool->SetParentType(ParentType::Item);
            }
            else
            {
                // Try to prevent memory leak
                initData.scene->addItem(pathTool);// First adopted by scene
                pathTool->hide();// If no one will use node, it will stay hidden
                pathTool->SetParentType(ParentType::Scene);
            }
        }
        return pathTool;
    }
    return nullptr;
}

//---------------------------------------------------------------------------------------------------------------------
QString VToolPiecePath::getTagName() const
{
    return VAbstractPattern::TagPath;
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
    qreal width = qApp->Settings()->WidthHairLine();

    const qreal scale = SceneScale(scene());
    if (scale > 1)
    {
        width = qMax(1., width/scale);
    }

    QPen toolPen = pen();
    toolPen.setWidthF(width);

    setPen(toolPen);

    PaintWithFixItemHighlightSelected<QGraphicsPathItem>(this, painter, option, widget);
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::incrementReferens()
{
    VAbstractTool::incrementReferens();
    if (_referens == 1)
    {
        if (idTool != NULL_ID)
        {
            doc->IncrementReferens(idTool);
        }

        IncrementNodes(VAbstractTool::data.GetPiecePath(m_id));

        ShowNode();
        QDomElement domElement = doc->elementById(m_id, getTagName());
        if (domElement.isElement())
        {
            doc->SetParametrUsage(domElement, AttrInUse, NodeUsage::InUse);
        }
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::decrementReferens()
{
    VAbstractTool::decrementReferens();
    if (_referens == 0)
    {
        if (idTool != NULL_ID)
        {
            doc->DecrementReferens(idTool);
        }

        DecrementNodes(VAbstractTool::data.GetPiecePath(m_id));

        HideNode();
        QDomElement domElement = doc->elementById(m_id, getTagName());
        if (domElement.isElement())
        {
            doc->SetParametrUsage(domElement, AttrInUse, NodeUsage::NotInUse);
        }
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::AddAttributes(VAbstractPattern *doc, QDomElement &domElement, quint32 id, const VPiecePath &path)
{
    doc->SetAttribute(domElement, VDomDocument::AttrId, id);
    doc->SetAttribute(domElement, AttrName, path.GetName());
    doc->SetAttribute(domElement, AttrType, static_cast<int>(path.GetType()));
    doc->SetAttribute(domElement, AttrTypeLine, PenStyleToLineStyle(path.GetPenType()));

    if (path.GetType() == PiecePathType::InternalPath)
    {
        doc->SetAttribute(domElement, VAbstractPattern::AttrVisible, path.GetVisibilityTrigger());
        doc->SetAttribute(domElement, AttrCut, path.IsCutPath());
        doc->SetAttribute(domElement, AttrFirstToCountour, path.IsFirstToCuttingCountour());
        doc->SetAttribute(domElement, AttrLastToCountour, path.IsLastToCuttingCountour());
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::FullUpdateFromFile()
{
    RefreshGeometry();
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::AllowHover(bool enabled)
{
    Q_UNUSED(enabled)
    // do nothing
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::AllowSelecting(bool enabled)
{
    Q_UNUSED(enabled)
    // do nothing
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::AddToFile()
{
    QDomElement domElement = doc->createElement(getTagName());
    const VPiecePath path = VAbstractTool::data.GetPiecePath(m_id);

    AddAttributes(doc, domElement, m_id, path);

    if (idTool != NULL_ID)
    {
        doc->SetAttribute(domElement, AttrIdTool, idTool);
    }

    AddNodes(doc, domElement, path);

    AddToModeling(domElement);

    if (m_pieceId > NULL_ID)
    {
        const VPiece oldDet = VAbstractTool::data.GetPiece(m_pieceId);
        VPiece newDet = oldDet;

        if (path.GetType() == PiecePathType::InternalPath)
        {
            newDet.GetInternalPaths().append(m_id);
            incrementReferens(); // Manually increment reference since in this case a piece tool will not do this for us
        }
        else if (path.GetType() == PiecePathType::CustomSeamAllowance)
        {
            CustomSARecord record;
            record.path = m_id;

            newDet.GetCustomSARecords().append(record);
            incrementReferens(); // Manually increment reference since in this case a piece tool will not do this for us
        }

        qApp->getUndoStack()->push(new SavePieceOptions(oldDet, newDet, doc, m_pieceId));
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::ShowNode()
{
    if (parentType != ParentType::Scene)
    {
        show();
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::HideNode()
{
    hide();
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::ToolCreation(const Source &typeCreation)
{
    if (typeCreation == Source::FromGui || typeCreation == Source::FromTool)
    {
        AddToFile();
    }
    else
    {
        RefreshDataInFile();
    }
}

//---------------------------------------------------------------------------------------------------------------------
VToolPiecePath::VToolPiecePath(const VToolPiecePathInitData &initData, QObject *qoParent, QGraphicsItem *parent)
    :VAbstractNode(initData.doc, initData.data, initData.id, NULL_ID, initData.drawName, initData.idTool, qoParent),
      QGraphicsPathItem(parent),
      m_pieceId(initData.idObject)
{
    RefreshGeometry();
    ToolCreation(initData.typeCreation);
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::RefreshGeometry()
{
    const VPiecePath path = VAbstractTool::data.GetPiecePath(m_id);
    if (path.GetType() == PiecePathType::InternalPath)
    {
        QVector<QPointF> cuttingPath;
        const quint32 pieceId = VAbstractTool::data.GetPieceForPiecePath(m_id);
        if (pieceId > NULL_ID)
        {
            VPiece piece = VAbstractTool::data.GetPiece(pieceId);
            // We cannot use current VContainer because it doesn't have current seam allowance value
            const VContainer pData = VAbstractPattern::getTool(pieceId)->getData();
            cuttingPath = piece.CuttingPathPoints(&pData);
        }
        QPainterPath p = path.PainterPath(this->getData(), cuttingPath);
        p.setFillRule(Qt::OddEvenFill);

        this->setPath(p);
        QPen pen = this->pen();
        pen.setStyle(path.GetPenType());
        this->setPen(pen);
        if (_referens > 0 && GetParentType() == ParentType::Item)
        {
            setVisible(path.IsVisible(this->getData()->DataVariables()));
        }
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::IncrementNodes(const VPiecePath &path) const
{
    for (int i = 0; i < path.CountNodes(); ++i)
    {
        doc->IncrementReferens(VAbstractTool::data.GetGObject(path.at(i).GetId())->getIdTool());
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VToolPiecePath::DecrementNodes(const VPiecePath &path) const
{
    for (int i = 0; i < path.CountNodes(); ++i)
    {
        doc->DecrementReferens(VAbstractTool::data.GetGObject(path.at(i).GetId())->getIdTool());
    }
}