/***************************************************************************
 *   Copyright (c) Yorik van Havre          (yorik@uncreated.net) 2013     *
 *                                                                         *
 *   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 <Standard.hxx>
# include <string>
#endif

#include <Base/FileInfo.h>
#include <Base/Console.h>
#include "LuxProject.h"
#include "LuxFeature.h"
#include "LuxTools.h"

using namespace Raytracing;
using namespace std;

PROPERTY_SOURCE(Raytracing::LuxProject, App::DocumentObjectGroup)

//===========================================================================
// Feature
//===========================================================================

LuxProject::LuxProject(void)
{
    ADD_PROPERTY_TYPE(PageResult ,(0),0,App::Prop_Output,"Resulting Luxrender Scene file");
    ADD_PROPERTY_TYPE(Template   ,(""),0,App::Prop_None ,"Template for the Luxrender project");
    ADD_PROPERTY_TYPE(Camera     ,(""),0,App::Prop_None ,"Camera settings");
}

App::DocumentObjectExecReturn *LuxProject::execute(void)
{
    if (std::string(PageResult.getValue()) == "")
        PageResult.setValue(Template.getValue());

    Base::FileInfo fi(Template.getValue());
    if (!fi.isReadable()) {
        Base::Console().Log("LuxProject::execute() not able to open %s!\n",Template.getValue());
        std::string error = std::string("Cannot open file ") + Template.getValue();
        return new App::DocumentObjectExecReturn(error);
    }
    // open Template file
    string line;
    ifstream file ( fi.filePath().c_str() );

    // make a temp file for FileIncluded Property
    string tempName = PageResult.getExchangeTempFile();
    ofstream ofile(tempName.c_str());

    // copy the input of the resource file
    while (!file.eof()) {
        getline (file,line);
        // check if the marker in the template is found
        if(line.find("#RaytracingContent") == string::npos) {
            if(line.find("#RaytracingCamera") == string::npos) {
                // if not -  write through
                ofile << line << endl;
            } else {
                // in luxrender, the camera info must be written at a specific place
                ofile << Camera.getValue();
            }
        } else {
            // get through the children and collect all the views
            ofile << "# declares FreeCAD objects" << endl
            << "# Generated by FreeCAD (http://www.freecadweb.org/)" << endl << endl;
            const std::vector<App::DocumentObject*> &Grp = Group.getValues();
            for (std::vector<App::DocumentObject*>::const_iterator It= Grp.begin();It!=Grp.end();++It) {
                if ((*It)->getTypeId().isDerivedFrom(Raytracing::LuxFeature::getClassTypeId())) {
                    Raytracing::LuxFeature *View = dynamic_cast<Raytracing::LuxFeature *>(*It);
                    ofile << View->Result.getValue();
                    ofile << endl;
                }
            }
            ofile << "# End of FreeCAD objects" << endl;
        }
    }

    file.close();
    ofile.close();

    PageResult.setValue(tempName.c_str());

    return App::DocumentObject::StdReturn;
}

short LuxProject::mustExecute() const
{
    if (Camera.isTouched())
        return 1;
    if (Template.isTouched())
        return 1;
    return 0;
}