// SPDX-License-Identifier: LGPL-2.1-or-later
/***************************************************************************
 *   Copyright (c) 2020 sliptonic <shopinthewoods@gmail.com>               *
 *                                                                         *
 *   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 "Base/Vector3D.h"
#include "Base/VectorPy.h"

#include "VoronoiCellPy.h"
#include "VoronoiCellPy.cpp"
#include "VoronoiEdgePy.h"


using namespace Path;

// returns a string which represents the object e.g. when printed in python
std::string VoronoiCellPy::representation() const
{
    std::stringstream ss;
    ss.precision(5);
    ss << "VoronoiCell(";
    VoronoiCell* c = getVoronoiCellPtr();
    if (c->isBound()) {
        ss << c->ptr->source_category() << ":" << c->ptr->source_index();
    }
    ss << ")";
    return ss.str();
}

PyObject* VoronoiCellPy::PyMake(struct _typeobject*, PyObject*, PyObject*)  // Python wrapper
{
    // create a new instance of VoronoiCellPy and the Twin object
    return new VoronoiCellPy(new VoronoiCell);
}

// constructor method
int VoronoiCellPy::PyInit(PyObject* args, PyObject* /*kwd*/)
{
    if (!PyArg_ParseTuple(args, "")) {
        PyErr_SetString(PyExc_RuntimeError, "no arguments accepted");
        return -1;
    }
    return 0;
}


PyObject* VoronoiCellPy::richCompare(PyObject* lhs, PyObject* rhs, int op)
{
    PyObject* cmp = (op == Py_EQ) ? Py_False : Py_True;
    if (PyObject_TypeCheck(lhs, &VoronoiCellPy::Type)
        && PyObject_TypeCheck(rhs, &VoronoiCellPy::Type) && (op == Py_EQ || op == Py_NE)) {
        const VoronoiCell* vl = static_cast<VoronoiCellPy*>(lhs)->getVoronoiCellPtr();
        const VoronoiCell* vr = static_cast<VoronoiCellPy*>(rhs)->getVoronoiCellPtr();
        if (vl->index == vr->index && vl->dia == vr->dia) {
            cmp = (op == Py_EQ) ? Py_True : Py_False;
        }
    }
    Py_INCREF(cmp);
    return cmp;
}

const Voronoi::voronoi_diagram_type::cell_type* getCellFromPy(
    VoronoiCellPy* c,
    bool throwIfNotBound = true
)
{
    auto self = c->getVoronoiCellPtr();
    if (self->isBound()) {
        return self->ptr;
    }
    if (throwIfNotBound) {
        throw Py::TypeError("Cell not bound to voronoi diagram");
    }
    return nullptr;
}

VoronoiCell* getVoronoiCellFromPy(const VoronoiCellPy* c, PyObject* args = nullptr)
{
    VoronoiCell* self = c->getVoronoiCellPtr();
    if (!self->isBound()) {
        throw Py::TypeError("Cell not bound to voronoi diagram");
    }
    if (args && !PyArg_ParseTuple(args, "")) {
        throw Py::RuntimeError("No arguments accepted");
    }
    return self;
}

Py::Long VoronoiCellPy::getIndex() const
{
    VoronoiCell* c = getVoronoiCellPtr();
    if (c->isBound()) {
        return Py::Long(c->dia->index(c->ptr));
    }
    return Py::Long(-1);
}

Py::Long VoronoiCellPy::getColor() const
{
    VoronoiCell* c = getVoronoiCellPtr();
    if (c->isBound()) {
        Voronoi::color_type color = c->ptr->color() & Voronoi::ColorMask;
        return Py::Long(PyLong_FromSize_t(color));
    }
    return Py::Long(0);
}

void VoronoiCellPy::setColor(Py::Long color)
{
    getCellFromPy(this)->color(long(color) & Voronoi::ColorMask);
}

Py::Long VoronoiCellPy::getSourceIndex() const
{
    VoronoiCell* c = getVoronoiCellFromPy(this);
    long index = c->ptr->source_index();
    return Py::Long(index);
}

Py::Long VoronoiCellPy::getSourceCategory() const
{
    VoronoiCell* c = getVoronoiCellFromPy(this);
    return Py::Long(c->ptr->source_category());
}

Py::String VoronoiCellPy::getSourceCategoryName() const
{
    VoronoiCell* c = getVoronoiCellFromPy(this);
    switch (c->ptr->source_category()) {
        case boost::polygon::SOURCE_CATEGORY_SINGLE_POINT:
            return Py::String("SINGLE_POINT");
        case boost::polygon::SOURCE_CATEGORY_SEGMENT_START_POINT:
            return Py::String("SEGMENT_START_POINT");
        case boost::polygon::SOURCE_CATEGORY_SEGMENT_END_POINT:
            return Py::String("SEGMENT_END_POINT");
        case boost::polygon::SOURCE_CATEGORY_INITIAL_SEGMENT:
            return Py::String("INITIAL_SEGMENT");
        case boost::polygon::SOURCE_CATEGORY_REVERSE_SEGMENT:
            return Py::String("REVERSE_SEGMENT");
        case boost::polygon::SOURCE_CATEGORY_GEOMETRY_SHIFT:
            return Py::String("GEOMETRY_SHIFT");
        case boost::polygon::SOURCE_CATEGORY_BITMASK:
            return Py::String("BITMASK");
    }
    return Py::String("");
}

Py::Object VoronoiCellPy::getIncidentEdge() const
{
    VoronoiCell* c = getVoronoiCellFromPy(this);
    return Py::asObject(new VoronoiEdgePy(new VoronoiEdge(c->dia, c->ptr->incident_edge())));
}

PyObject* VoronoiCellPy::containsPoint(PyObject* args) const
{
    VoronoiCell* c = getVoronoiCellFromPy(this, args);
    PyObject* chk = c->ptr->contains_point() ? Py_True : Py_False;
    Py_INCREF(chk);
    return chk;
}

PyObject* VoronoiCellPy::containsSegment(PyObject* args) const
{
    VoronoiCell* c = getVoronoiCellFromPy(this, args);
    PyObject* chk = c->ptr->contains_segment() ? Py_True : Py_False;
    Py_INCREF(chk);
    return chk;
}

PyObject* VoronoiCellPy::isDegenerate(PyObject* args) const
{
    VoronoiCell* c = getVoronoiCellFromPy(this, args);
    PyObject* chk = c->ptr->is_degenerate() ? Py_True : Py_False;
    Py_INCREF(chk);
    return chk;
}

PyObject* VoronoiCellPy::getSource(PyObject* args) const
{
    double z = 0;
    if (!PyArg_ParseTuple(args, "|d", &z)) {
        throw Py::TypeError("Optional z argument (double) accepted");
    }

    VoronoiCell* c = getVoronoiCellFromPy(this);
    if (c->ptr->contains_point()) {
        Base::Vector3d v = c->dia->scaledVector(c->dia->retrievePoint(c->ptr), z);
        return new Base::VectorPy(new Base::Vector3d(v));
    }
    Voronoi::segment_type s = c->dia->retrieveSegment(c->ptr);
    Base::Vector3d v0 = c->dia->scaledVector(low(s), z);
    Base::Vector3d v1 = c->dia->scaledVector(high(s), z);
    Py::List list;
    list.append(Py::asObject(new Base::VectorPy(new Base::Vector3d(v0))));
    list.append(Py::asObject(new Base::VectorPy(new Base::Vector3d(v1))));
    return Py::new_reference_to(list);
}


// custom attributes get/set

PyObject* VoronoiCellPy::getCustomAttributes(const char* /*attr*/) const
{
    return nullptr;
}

int VoronoiCellPy::setCustomAttributes(const char* /*attr*/, PyObject* /*obj*/)
{
    return 0;
}