#include <CGAL/Three/Three.h>
#include <CGAL/Three/CGAL_Lab_io_plugin_interface.h>
#include <CGAL/Combinatorial_map_save_load.h>
#include <CGAL/Polyhedron_3_to_lcc.h>

#include "Scene_lcc_item.h"

#include <iostream>
#include <fstream>

class LCC_io_plugin :
    public QObject,
    public CGAL::Three::CGAL_Lab_io_plugin_interface
{
  Q_OBJECT
  Q_INTERFACES(CGAL::Three::CGAL_Lab_io_plugin_interface)
  Q_PLUGIN_METADATA(IID "com.geometryfactory.CGALLab.IOPluginInterface/1.90" FILE "lcc_io_plugin.json")

public:
  bool isDefaultLoader(const CGAL::Three::Scene_item *item) const override
  {
    if(qobject_cast<const Scene_lcc_item*>(item))
      return true;
    return false;
  }
  QString name() const override{ return "lcc_plugin"; }
  QString nameFilters() const override{ return
        "OFF files (*.off);;"
        "3-map files (*.3map)"; }

  QString saveNameFilters() const override{
    return
        "3-map files (*.3map)";
  }

  bool canLoad(QFileInfo) const override{ return true; }
  QList<CGAL::Three::Scene_item*> load(QFileInfo fileinfo, bool& ok, bool add_to_scene=true) override{
    // Open file
    std::ifstream ifs(fileinfo.filePath().toUtf8());
    if(!ifs) {
      std::cerr << "Error! Cannot open file " << (const char*)fileinfo.filePath().toUtf8() << std::endl;
      ok = false;
      return QList<CGAL::Three::Scene_item*>();
    }

    Scene_lcc_item::LCC lcc;
    QString ext = fileinfo.suffix();
    bool res = true;
    if(ext == "off")
      CGAL::polyhedron_3_flux_to_lcc < Scene_lcc_item::LCC > (lcc, ifs);
    else
    {
      res = CGAL::load_combinatorial_map(ifs, lcc);
    }
    if(!res)
    {
      ok = false;
      return QList<CGAL::Three::Scene_item*>();
    }
    Scene_lcc_item* new_item = new Scene_lcc_item(lcc);
    new_item->setName(fileinfo.fileName());
    new_item->invalidateOpenGLBuffers();
    if(add_to_scene)
      CGAL::Three::Three::scene()->addItem(new_item);
    ok = true;
    return QList<CGAL::Three::Scene_item*>()<<new_item;
  }


  bool canSave(const CGAL::Three::Scene_item*)override{return false;}
  bool save(QFileInfo, QList<CGAL::Three::Scene_item*>& )override{
    return false;
  }

};


#include "lcc_io_plugin.moc"
