/***************************************************************************
 *   Copyright (c) Jürgen Riegel          (juergen.riegel@web.de) 2002     *
 *                                                                         *
 *   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 "PreCompiled.h"

#ifndef _PreComp_
# include <sstream>
# include <BRepAdaptor_Curve.hxx>
# include <BRepAdaptor_Surface.hxx>
# include <BRepBndLib.hxx>
# include <BRepBuilderAPI_GTransform.hxx>
# include <Bnd_Box.hxx>
# include <BRepTools.hxx>
# include <BRepTools_ShapeSet.hxx>
# include <BRepBuilderAPI_Copy.hxx>
# include <TopTools_HSequenceOfShape.hxx>
# include <TopTools_MapOfShape.hxx>
# include <TopoDS.hxx>
# include <TopoDS_Iterator.hxx>
# include <TopExp.hxx>
# include <Standard_Failure.hxx>
# include <gp_GTrsf.hxx>
# include <gp_Trsf.hxx>
#endif


#include <strstream>
#include <Base/Console.h>
#include <Base/Writer.h>
#include <Base/Reader.h>
#include <Base/Exception.h>
#include <Base/FileInfo.h>
#include <Base/Stream.h>
#include <App/DocumentObject.h>

#include "PropertyTopoShape.h"
#include "TopoShapePy.h"
#include "TopoShapeFacePy.h"
#include "TopoShapeEdgePy.h"
#include "TopoShapeWirePy.h"
#include "TopoShapeVertexPy.h"
#include "TopoShapeSolidPy.h"
#include "TopoShapeShellPy.h"
#include "TopoShapeCompSolidPy.h"
#include "TopoShapeCompoundPy.h"

using namespace Part;

TYPESYSTEM_SOURCE(Part::PropertyPartShape , App::PropertyComplexGeoData);

PropertyPartShape::PropertyPartShape()
{
}

PropertyPartShape::~PropertyPartShape()
{
}

void PropertyPartShape::setValue(const TopoShape& sh)
{
    aboutToSetValue();
    _Shape = sh;
    hasSetValue();
}

void PropertyPartShape::setValue(const TopoDS_Shape& sh)
{
    aboutToSetValue();
    _Shape._Shape = sh;
    hasSetValue();
}

const TopoDS_Shape& PropertyPartShape::getValue(void)const 
{
    return _Shape._Shape;
}

const TopoShape& PropertyPartShape::getShape() const
{
    return this->_Shape;
}

const Data::ComplexGeoData* PropertyPartShape::getComplexData() const
{
    return &(this->_Shape);
}

Base::BoundBox3d PropertyPartShape::getBoundingBox() const
{
    Base::BoundBox3d box;
    if (_Shape._Shape.IsNull())
        return box;
    try {
        // If the shape is empty an exception may be thrown
        Bnd_Box bounds;
        BRepBndLib::Add(_Shape._Shape, bounds);
        bounds.SetGap(0.0);
        Standard_Real xMin, yMin, zMin, xMax, yMax, zMax;
        bounds.Get(xMin, yMin, zMin, xMax, yMax, zMax);

        box.MinX = xMin;
        box.MaxX = xMax;
        box.MinY = yMin;
        box.MaxY = yMax;
        box.MinZ = zMin;
        box.MaxZ = zMax;
    }
    catch (Standard_Failure) {
    }

    return box;
}

void PropertyPartShape::getFaces(std::vector<Base::Vector3d> &aPoints,
                                 std::vector<Data::ComplexGeoData::Facet> &aTopo,
                                 float accuracy, uint16_t flags) const
{
    _Shape.getFaces(aPoints, aTopo, accuracy, flags);
}

void PropertyPartShape::transformGeometry(const Base::Matrix4D &rclTrf)
{
    aboutToSetValue();
    _Shape.transformGeometry(rclTrf);
    hasSetValue();
}

PyObject *PropertyPartShape::getPyObject(void)
{
    const TopoDS_Shape& sh = _Shape._Shape;
    if (sh.IsNull())
        return new TopoShapePy(new TopoShape(sh));

    TopAbs_ShapeEnum type = sh.ShapeType();
    switch (type)
    {
    case TopAbs_COMPOUND:
        return new TopoShapeCompoundPy(new TopoShape(sh));
    case TopAbs_COMPSOLID:
        return new TopoShapeCompSolidPy(new TopoShape(sh));
    case TopAbs_SOLID:
        return new TopoShapeSolidPy(new TopoShape(sh));
    case TopAbs_SHELL:
        return new TopoShapeShellPy(new TopoShape(sh));
    case TopAbs_FACE:
        return new TopoShapeFacePy(new TopoShape(sh));
    case TopAbs_WIRE:
        return new TopoShapeWirePy(new TopoShape(sh));
    case TopAbs_EDGE:
        return new TopoShapeEdgePy(new TopoShape(sh));
    case TopAbs_VERTEX:
        return new TopoShapeVertexPy(new TopoShape(sh));
    case TopAbs_SHAPE:
    default:
        return new TopoShapePy(new TopoShape(sh));
        break;
    }
}

void PropertyPartShape::setPyObject(PyObject *value)
{
    if (PyObject_TypeCheck(value, &(TopoShapePy::Type))) {
        TopoShapePy *pcObject = static_cast<TopoShapePy*>(value);
        setValue(*pcObject->getTopoShapePtr());
    }
    else {
        std::string error = std::string("type must be 'Shape', not ");
        error += value->ob_type->tp_name;
        throw Py::TypeError(error);
    }
}

App::Property *PropertyPartShape::Copy(void) const
{
    PropertyPartShape *prop = new PropertyPartShape();
    prop->_Shape = this->_Shape;
    if (!_Shape._Shape.IsNull()) {
        BRepBuilderAPI_Copy copy(_Shape._Shape);
        prop->_Shape._Shape = copy.Shape();
    }

    return prop;
}

void PropertyPartShape::Paste(const App::Property &from)
{
    aboutToSetValue();
    _Shape = dynamic_cast<const PropertyPartShape&>(from)._Shape;
    hasSetValue();
}

unsigned int PropertyPartShape::getMemSize (void) const
{
    return _Shape.getMemSize();
}

void PropertyPartShape::Save (Base::Writer &writer) const
{
    if(!writer.isForceXML()) {
        //See SaveDocFile(), RestoreDocFile()
        writer.Stream() << writer.ind() << "<Part file=\"" 
                        << writer.addFile("PartShape.brp", this)
                        << "\"/>" << std::endl;
    }
}

void PropertyPartShape::Restore(Base::XMLReader &reader)
{
    reader.readElement("Part");
    std::string file (reader.getAttribute("file") );

    if (!file.empty()) {
        // initate a file read
        reader.addFile(file.c_str(),this);
    }
}

void PropertyPartShape::SaveDocFile (Base::Writer &writer) const
{
    // If the shape is empty we simply store nothing. The file size will be 0 which
    // can be checked when reading in the data.
    if (_Shape._Shape.IsNull())
        return;
    // NOTE: Cleaning the triangulation may cause problems on some algorithms like BOP
    // Before writing to the project we clean all triangulation data to save memory
    // BRepTools::Clean(_Shape._Shape);

    // create a temporary file and copy the content to the zip stream
    // once the tmp. filename is known use always the same because otherwise
    // we may run into some problems on the Linux platform
    static Base::FileInfo fi(Base::FileInfo::getTempFileName());

    if (!BRepTools::Write(_Shape._Shape,(const Standard_CString)fi.filePath().c_str())) {
        // Note: Do NOT throw an exception here because if the tmp. file could
        // not be created we should not abort.
        // We only print an error message but continue writing the next files to the
        // stream...
        App::PropertyContainer* father = this->getContainer();
        if (father && father->isDerivedFrom(App::DocumentObject::getClassTypeId())) {
            App::DocumentObject* obj = static_cast<App::DocumentObject*>(father);
            Base::Console().Error("Shape of '%s' cannot be written to BRep file '%s'\n", 
                obj->Label.getValue(),fi.filePath().c_str());
        }
        else {
            Base::Console().Error("Cannot save BRep file '%s'\n", fi.filePath().c_str());
        }
    }

    Base::ifstream file(fi, std::ios::in | std::ios::binary);
    if (file){
        unsigned long ulSize = 0; 
        std::streambuf* buf = file.rdbuf();
        if (buf) {
            unsigned long ulCurr;
            ulCurr = buf->pubseekoff(0, std::ios::cur, std::ios::in);
            ulSize = buf->pubseekoff(0, std::ios::end, std::ios::in);
            buf->pubseekoff(ulCurr, std::ios::beg, std::ios::in);
        }

        // read in the ASCII file and write back to the stream
        std::strstreambuf sbuf(ulSize);
        file >> &sbuf;
        writer.Stream() << &sbuf;
    }

    file.close();
    // remove temp file
    fi.deleteFile();
}

void PropertyPartShape::RestoreDocFile(Base::Reader &reader)
{
    BRep_Builder builder;

    // create a temporary file and copy the content from the zip stream
    Base::FileInfo fi(Base::FileInfo::getTempFileName());

    // read in the ASCII file and write back to the file stream
    Base::ofstream file(fi, std::ios::out | std::ios::binary);
    unsigned long ulSize = 0; 
    if (reader) {
        std::streambuf* buf = file.rdbuf();
        reader >> buf;
        file.flush();
        ulSize = buf->pubseekoff(0, std::ios::cur, std::ios::in);
    }
    file.close();

    // Read the shape from the temp file, if the file is empty the stored shape was already empty.
    // If it's still empty after reading the (non-empty) file there must occurred an error.
    TopoDS_Shape shape;
    if (ulSize > 0) {
        if (!BRepTools::Read(shape, (const Standard_CString)fi.filePath().c_str(), builder)) {
            // Note: Do NOT throw an exception here because if the tmp. created file could
            // not be read it's NOT an indication for an invalid input stream 'reader'.
            // We only print an error message but continue reading the next files from the
            // stream...
            App::PropertyContainer* father = this->getContainer();
            if (father && father->isDerivedFrom(App::DocumentObject::getClassTypeId())) {
                App::DocumentObject* obj = static_cast<App::DocumentObject*>(father);
                Base::Console().Error("BRep file '%s' with shape of '%s' seems to be empty\n", 
                    fi.filePath().c_str(),obj->Label.getValue());
            }
            else {
                Base::Console().Warning("Loaded BRep file '%s' seems to be empty\n", fi.filePath().c_str());
            }
        }
    }

    // delete the temp file
    fi.deleteFile();

    setValue(shape);
}

// -------------------------------------------------------------------------

TYPESYSTEM_SOURCE(Part::PropertyFilletEdges , App::PropertyLists);

PropertyFilletEdges::PropertyFilletEdges()
{
}

PropertyFilletEdges::~PropertyFilletEdges()
{
}

void PropertyFilletEdges::setValue(int id, double r1, double r2)
{
    aboutToSetValue();
    _lValueList.resize(1);
    _lValueList[0].edgeid = id;
    _lValueList[0].radius1 = r1;
    _lValueList[0].radius2 = r2;
    hasSetValue();
}

void PropertyFilletEdges::setValues(const std::vector<FilletElement>& values)
{
    aboutToSetValue();
    _lValueList = values;
    hasSetValue();
}

PyObject *PropertyFilletEdges::getPyObject(void)
{
    Py::List list(getSize());
    std::vector<FilletElement>::const_iterator it;
    int index = 0;
    for (it = _lValueList.begin(); it != _lValueList.end(); ++it) {
        Py::Tuple ent(3);
        ent.setItem(0, Py::Int(it->edgeid));
        ent.setItem(1, Py::Float(it->radius1));
        ent.setItem(2, Py::Float(it->radius2));
        list[index++] = ent;
    }

    return Py::new_reference_to(list);
}

void PropertyFilletEdges::setPyObject(PyObject *value)
{
    Py::List list(value);
    std::vector<FilletElement> values;
    values.reserve(list.size());
    for (Py::List::iterator it = list.begin(); it != list.end(); ++it) {
        FilletElement fe;
        Py::Tuple ent(*it);
        fe.edgeid = (int)Py::Int(ent.getItem(0));
        fe.radius1 = (double)Py::Float(ent.getItem(1));
        fe.radius2 = (double)Py::Float(ent.getItem(2));
        values.push_back(fe);
    }

    setValues(values);
}

void PropertyFilletEdges::Save (Base::Writer &writer) const
{
    if (!writer.isForceXML()) {
        writer.Stream() << writer.ind() << "<FilletEdges file=\"" << writer.addFile(getName(), this) << "\"/>" << std::endl;
    }
}

void PropertyFilletEdges::Restore(Base::XMLReader &reader)
{
    reader.readElement("FilletEdges");
    std::string file (reader.getAttribute("file") );

    if (!file.empty()) {
        // initate a file read
        reader.addFile(file.c_str(),this);
    }
}

void PropertyFilletEdges::SaveDocFile (Base::Writer &writer) const
{
    Base::OutputStream str(writer.Stream());
    uint32_t uCt = (uint32_t)getSize();
    str << uCt;
    for (std::vector<FilletElement>::const_iterator it = _lValueList.begin(); it != _lValueList.end(); ++it) {
        str << it->edgeid << it->radius1 << it->radius2;
    }
}

void PropertyFilletEdges::RestoreDocFile(Base::Reader &reader)
{
    Base::InputStream str(reader);
    uint32_t uCt=0;
    str >> uCt;
    std::vector<FilletElement> values(uCt);
    for (std::vector<FilletElement>::iterator it = values.begin(); it != values.end(); ++it) {
        str >> it->edgeid >> it->radius1 >> it->radius2;
    }
    setValues(values);
}

App::Property *PropertyFilletEdges::Copy(void) const
{
    PropertyFilletEdges *p= new PropertyFilletEdges();
    p->_lValueList = _lValueList;
    return p;
}

void PropertyFilletEdges::Paste(const Property &from)
{
    aboutToSetValue();
    _lValueList = dynamic_cast<const PropertyFilletEdges&>(from)._lValueList;
    hasSetValue();
}
