/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
 *                                                                           *
 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
 *                                                                           *
 *  OpenFlipper is free software: you can redistribute it and/or modify      *
 *  it under the terms of the GNU Lesser General Public License as           *
 *  published by the Free Software Foundation, either version 3 of           *
 *  the License, or (at your option) any later version with the              *
 *  following exceptions:                                                    *
 *                                                                           *
 *  If other files instantiate templates or use macros                       *
 *  or inline functions from this file, or you compile this file and         *
 *  link it with other files to produce an executable, this file does        *
 *  not by itself cause the resulting executable to be covered by the        *
 *  GNU Lesser General Public License. This exception does not however       *
 *  invalidate any other reasons why the executable file might be            *
 *  covered by the GNU Lesser General Public License.                        *
 *                                                                           *
 *  OpenFlipper 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 Lesser General Public License for more details.                      *
 *                                                                           *
 *  You should have received a copy of the GNU LesserGeneral Public          *
 *  License along with OpenFlipper. If not,                                  *
 *  see <http://www.gnu.org/licenses/>.                                      *
 *                                                                           *
\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
 *   $Revision$                                                         *
 *   $Author$                                                      *
 *   $Date$                   *
 *                                                                           *
\*===========================================================================*/




//=============================================================================
//
//  CLASS Core - IMPLEMENTATION of Path and File Handling
//
//=============================================================================


//== INCLUDES =================================================================

// -------------------- mview
#include "Core.hh"
// -------------------- ACG
#include <ACG/Scenegraph/DrawModes.hh>

#include <OpenFlipper/INIFile/INIFile.hh>
#include <OpenFlipper/common/GlobalOptions.hh>
#include <OpenFlipper/BasePlugin/PluginFunctions.hh>

#include <QCoreApplication>


//== IMPLEMENTATION ==========================================================

void Core::applyOptions(){

  if ( OpenFlipper::Options::gui() ) {

    //Init ViewModes
    coreWidget_->initViewModes();

    //Set default Viewmode
    if (OpenFlipper::Options::defaultToolboxMode() != "")
      coreWidget_->slotChangeView(OpenFlipper::Options::defaultToolboxMode(), QStringList(), QStringList());
    //Set Fullscreen
    if ( OpenFlipper::Options::fullScreen() )
      coreWidget_->setWindowState( coreWidget_->windowState() | Qt::WindowFullScreen);
    else
      coreWidget_->setWindowState( (coreWidget_->windowState() | Qt::WindowFullScreen) ^ Qt::WindowFullScreen);

    // Logger
    coreWidget_->showLogger( OpenFlipper::Options::loggerState() );

    // gl mouse cursor
    coreWidget_->setGlCursor( OpenFlipper::Options::glMouse() );

    // Prepare Picking Debugger Flag
    ACG::SceneGraph::PickTarget target;
    if ( OpenFlipper::Options::pickingRenderMode() == "PICK_ANYHING") {
      target = ACG::SceneGraph::PICK_ANYTHING;
    } else if ( OpenFlipper::Options::pickingRenderMode() == "PICK_VERTEX") {
      target = ACG::SceneGraph::PICK_VERTEX;
    } else if ( OpenFlipper::Options::pickingRenderMode() == "PICK_EDGE") {
      target = ACG::SceneGraph::PICK_EDGE;
    } else if ( OpenFlipper::Options::pickingRenderMode() == "PICK_FACE") {
      target = ACG::SceneGraph::PICK_FACE;
    } else if ( OpenFlipper::Options::pickingRenderMode() == "PICK_FRONT_VERTEX") {
      target = ACG::SceneGraph::PICK_FRONT_VERTEX;
    } else if ( OpenFlipper::Options::pickingRenderMode() == "PICK_FRONT_EDGE") {
      target = ACG::SceneGraph::PICK_FRONT_EDGE;
    } else {
      target = ACG::SceneGraph::PICK_ANYTHING;
    }

    //set viewer properties
    for (int i=0; i < PluginFunctions::viewers(); i++){

      PluginFunctions::setDrawMode( OpenFlipper::Options::defaultDrawMode(i), i );
      PluginFunctions::setFixedView(OpenFlipper::Options::defaultViewingDirection(i), i );

      //only switch projection here if an object is opened
      //this prevents problems when applying options on app start
      if ( PluginFunctions::objectCount() > 0 ){ 
        if ( OpenFlipper::Options::defaultProjectionMode(i) == 0 )
          PluginFunctions::orthographicProjection(i);
        else
          PluginFunctions::perspectiveProjection(i);
      }
    }

    if ( OpenFlipper::Options::multiView() )
      coreWidget_->setViewerLayout( OpenFlipper::Options::defaultViewerLayout() );

//     if ( OpenFlipper::Options::gridVisible() )
//       gridNode_->show();
//     else
//       gridNode_->hide();

    //set defaultBackgroundColor
    QColor c =  OpenFlipperSettings().value("Core/Gui/glViewer/defaultBackgroundColor").value<QColor>();

    for ( unsigned int i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i ) {
      //wheel zoom factor
      PluginFunctions::viewerProperties(i).wheelZoomFactor( OpenFlipperSettings().value("Core/Mouse/Wheel/ZoomFactor").toDouble() );
      PluginFunctions::viewerProperties(i).wheelZoomFactorShift( OpenFlipperSettings().value("Core/Mouse/Wheel/ZoomFactorShift").toDouble() );

      // Picking Debugger
      PluginFunctions::viewerProperties(i).renderPicking(OpenFlipper::Options::renderPicking(), target );
    }

    //hideToolbox
    if (OpenFlipper::Options::hideToolbox()) {

      coreWidget_->showToolbox (false);
    }

    //setup logFile
    if (logFile_ != 0){

      if (  OpenFlipperSettings().value("Core/Log/logFile").toString() != logFile_->fileName() ){
        logFile_->close();
        delete logFile_;
        logFile_ = 0;
        if (logStream_ != 0){
          delete logStream_;
          logStream_ = 0;
        }
      }
    }

    updateView();

  }
}

void Core::saveOptions(){
  QString inifile = QDir::home().absolutePath() + OpenFlipper::Options::dirSeparator() + ".OpenFlipper" +
                                                  OpenFlipper::Options::dirSeparator() +  "OpenFlipper.ini";

  INIFile ini;
  if ( ! ini.connect( inifile ,false) ) {
    emit log(LOGERR,tr("Failed to connect to users ini file"));

    if ( ! ini.connect( inifile,true) ) {
      emit log(LOGERR,tr("Can not create user ini file"));
    } else {
      writeApplicationOptions(ini);
      ini.disconnect();
    }
  } else {
    writeApplicationOptions(ini);
    ini.disconnect();
  }
}

void Core::setupOptions() {

  // initialize the Settings:
  OpenFlipper::Options::initializeSettings();

  QStringList optionFiles;

  // ==============================================================
  // Global ini file in the application directory
  // ==============================================================
  QFile globalIni(OpenFlipper::Options::applicationDir().absolutePath() + OpenFlipper::Options::dirSeparator() + "OpenFlipper.ini");
  if ( globalIni.exists() )
    optionFiles.push_back(OpenFlipper::Options::applicationDir().absolutePath() + OpenFlipper::Options::dirSeparator() + "OpenFlipper.ini");

  // ==============================================================
  // Local ini file in the users home directory
  // ==============================================================
  QFile localIni(OpenFlipper::Options::configDirStr() + OpenFlipper::Options::dirSeparator() + "OpenFlipper.ini");
  if ( localIni.exists() )
    optionFiles.push_back(OpenFlipper::Options::configDirStr() + OpenFlipper::Options::dirSeparator() + "OpenFlipper.ini");

  // Set the previously generated Optionfiles
  OpenFlipper::Options::optionFiles(optionFiles);

  // ==============================================================
  // Default File open directories
  // ==============================================================
  // Default to OpenFlippers Texture dir
  OpenFlipper::Options::currentTextureDir(OpenFlipper::Options::textureDirStr());

  // Default to home directory
  OpenFlipper::Options::currentDir( QDir::home() );


  // ==============================================================
  // Load Application options from all files available
  // ==============================================================

  for ( int i = 0 ; i < (int)optionFiles.size(); ++i) {

    INIFile _ini;

    if ( ! _ini.connect(optionFiles[i],false) ) {
      emit log(LOGERR,tr("Failed to connect to _ini file") + optionFiles[i]);
      continue;
    }

    readApplicationOptions(_ini);

    _ini.disconnect();
  }

}

/// restore key Assignments that were saved in config files
void Core::restoreKeyBindings(){

  QStringList optionFiles;

  // ==============================================================
  // Global ini file in the application directory
  // ==============================================================
  QFile globalIni(OpenFlipper::Options::applicationDir().absolutePath() + OpenFlipper::Options::dirSeparator() + "OpenFlipper.ini");
  if ( globalIni.exists() )
    optionFiles.push_back(OpenFlipper::Options::applicationDir().absolutePath() + OpenFlipper::Options::dirSeparator() + "OpenFlipper.ini");

  // ==============================================================
  // Local ini file in the users home directory
  // ==============================================================
  QFile localIni(OpenFlipper::Options::configDirStr() + OpenFlipper::Options::dirSeparator() + "OpenFlipper.ini");
  if ( localIni.exists() )
    optionFiles.push_back(OpenFlipper::Options::configDirStr() + OpenFlipper::Options::dirSeparator() + "OpenFlipper.ini");

  // Set the previously generated Optionfiles
  OpenFlipper::Options::optionFiles(optionFiles);


  // ==============================================================
  // Load Application options from all files available
  // ==============================================================

  for ( int i = 0 ; i < (int)optionFiles.size(); ++i) {

    INIFile _ini;

    if ( ! _ini.connect(optionFiles[i],false) ) {
      emit log(LOGERR,tr("Failed to connect to _ini file") + optionFiles[i]);
      continue;
    }

    if ( OpenFlipper::Options::gui() )
      coreWidget_->loadKeyBindings(_ini);

    _ini.disconnect();
  }
}

//=============================================================================