/****************************************************************************
 **
 **  Copyright (C) 2013 Valentina project All Rights Reserved.
 **
 **  This file is part of Valentina.
 **
 **  Tox 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 "vtoolarc.h"
#include "container/calculator.h"

const QString VToolArc::TagName = QStringLiteral("arc");
const QString VToolArc::ToolType = QStringLiteral("simple");

VToolArc::VToolArc(VDomDocument *doc, VContainer *data, qint64 id, Tool::Sources typeCreation,
                   QGraphicsItem *parent):VDrawTool(doc, data, id), QGraphicsPathItem(parent),
    dialogArc(QSharedPointer<DialogArc>()){
    VArc arc = data->GetArc(id);
    QPainterPath path;
    path.addPath(arc.GetPath());
    path.setFillRule( Qt::WindingFill );
    this->setPath(path);
    this->setPen(QPen(Qt::black, widthHairLine/factor));
    this->setFlag(QGraphicsItem::ItemIsSelectable, true);
    this->setAcceptHoverEvents(true);

    if(typeCreation == Tool::FromGui){
        AddToFile();
    }
}

void VToolArc::setDialog(){
    Q_ASSERT(!dialogArc.isNull());
    if(!dialogArc.isNull()){
        VArc arc = VAbstractTool::data.GetArc(id);
        dialogArc->SetCenter(arc.GetCenter());
        dialogArc->SetF1(arc.GetFormulaF1());
        dialogArc->SetF2(arc.GetFormulaF2());
        dialogArc->SetRadius(arc.GetFormulaRadius());
    }
}

void VToolArc::Create(QSharedPointer<DialogArc> &dialog, VMainGraphicsScene *scene, VDomDocument *doc,
                      VContainer *data){
    qint64 center = dialog->GetCenter();
    QString radius = dialog->GetRadius();
    QString f1 = dialog->GetF1();
    QString f2 = dialog->GetF2();
    Create(0, center, radius, f1, f2, scene, doc, data, Document::FullParse, Tool::FromGui);
}

void VToolArc::Create(const qint64 _id, const qint64 &center, const QString &radius, const QString &f1,
                      const QString &f2, VMainGraphicsScene *scene, VDomDocument *doc,
                      VContainer *data, const Document::Documents &parse, Tool::Sources typeCreation){
    qreal calcRadius = 0, calcF1 = 0, calcF2 = 0;

    Calculator cal(data);
    QString errorMsg;
    qreal result = cal.eval(radius, &errorMsg);
    if(errorMsg.isEmpty()){
        calcRadius = toPixel(result);
    }

    errorMsg.clear();
    result = cal.eval(f1, &errorMsg);
    if(errorMsg.isEmpty()){
        calcF1 = result;
    }

    errorMsg.clear();
    result = cal.eval(f2, &errorMsg);
    if(errorMsg.isEmpty()){
        calcF2 = result;
    }

    VArc arc = VArc(data->DataPoints(), center, calcRadius, radius, calcF1, f1, calcF2, f2 );
    qint64 id = _id;
    if(typeCreation == Tool::FromGui){
        id = data->AddArc(arc);
        data->AddLengthArc(data->GetNameArc(center,id), toMM(arc.GetLength()));
    } else {
        data->UpdateArc(id, arc);
        data->AddLengthArc(data->GetNameArc(center,id), toMM(arc.GetLength()));
        if(parse != Document::FullParse){
            doc->UpdateToolData(id, data);
        }
    }
    VDrawTool::AddRecord(id, Tool::ArcTool, doc);
    if(parse == Document::FullParse){
        VToolArc *toolArc = new VToolArc(doc, data, id, typeCreation);
        scene->addItem(toolArc);
        connect(toolArc, &VToolArc::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
        connect(toolArc, &VToolArc::RemoveTool, scene, &VMainGraphicsScene::RemoveTool);
        doc->AddTool(id, toolArc);
        doc->IncrementReferens(center);
    }
}

void VToolArc::FullUpdateFromFile(){
    RefreshGeometry();
}

void VToolArc::FullUpdateFromGui(int result){
    if(result == QDialog::Accepted){
        QDomElement domElement = doc->elementById(QString().setNum(id));
        if(domElement.isElement()){
            domElement.setAttribute(AttrCenter, QString().setNum(dialogArc->GetCenter()));
            domElement.setAttribute(AttrRadius, dialogArc->GetRadius());
            domElement.setAttribute(AttrAngle1, dialogArc->GetF1());
            domElement.setAttribute(AttrAngle2, dialogArc->GetF2());
            emit FullUpdateTree();
        }
    }
    dialogArc.clear();
}

void VToolArc::ChangedActivDraw(const QString newName){
    bool selectable = false;
    if(nameActivDraw == newName){
        selectable = true;
        currentColor = Qt::black;
    } else {
        selectable = false;
        currentColor = Qt::gray;
    }
    this->setPen(QPen(currentColor, widthHairLine/factor));
    this->setFlag(QGraphicsItem::ItemIsSelectable, selectable);
    this->setAcceptHoverEvents (selectable);
    VDrawTool::ChangedActivDraw(newName);
}

void VToolArc::ShowTool(qint64 id, Qt::GlobalColor color, bool enable){
    ShowItem(this, id, color, enable);
}

void VToolArc::SetFactor(qreal factor){
    VDrawTool::SetFactor(factor);
    RefreshGeometry();
}

void VToolArc::contextMenuEvent(QGraphicsSceneContextMenuEvent *event){
    ContextMenu(dialogArc, this, event);
}

void VToolArc::AddToFile(){
    VArc arc = VAbstractTool::data.GetArc(id);
    QDomElement domElement = doc->createElement(TagName);

    AddAttribute(domElement, AttrId, id);
    AddAttribute(domElement, AttrType, ToolType);
    AddAttribute(domElement, AttrCenter, arc.GetCenter());
    AddAttribute(domElement, AttrRadius, arc.GetFormulaRadius());
    AddAttribute(domElement, AttrAngle1, arc.GetFormulaF1());
    AddAttribute(domElement, AttrAngle2, arc.GetFormulaF2());

    AddToCalculation(domElement);
}

void VToolArc::mouseReleaseEvent(QGraphicsSceneMouseEvent *event){
    if(event->button() == Qt::LeftButton){
        emit ChoosedTool(id, Scene::Arc);
    }
    QGraphicsItem::mouseReleaseEvent(event);
}

void VToolArc::hoverMoveEvent(QGraphicsSceneHoverEvent *event){
    Q_UNUSED(event);
    this->setPen(QPen(currentColor, widthMainLine/factor));
}

void VToolArc::hoverLeaveEvent(QGraphicsSceneHoverEvent *event){
    Q_UNUSED(event);
    this->setPen(QPen(currentColor, widthHairLine/factor));
}

void VToolArc::RemoveReferens(){
    VArc arc = VAbstractTool::data.GetArc(id);
    doc->DecrementReferens(arc.GetCenter());
}

void VToolArc::RefreshGeometry(){
    this->setPen(QPen(currentColor, widthHairLine/factor));
    VArc arc = VAbstractTool::data.GetArc(id);
    QPainterPath path;
    path.addPath(arc.GetPath());
    path.setFillRule( Qt::WindingFill );
    this->setPath(path);
}