/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.


   ### File Specific:
   main-programmer: Benjamin Grauer

*/

#include "gui_exec.h"

#include "resource_manager.h"
#include "parser/ini_parser/ini_parser.h"

#include <string.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>


#ifdef __WIN32__
#include <direct.h>
#endif /* __WIN32__ */
HashTable* orxonoxFlagHash;

/**
  *  Creates the Exec-Frame
*/
GuiExec::GuiExec()
{
  Frame* execFrame;            //!< The Frame that holds the ExecutionOptions.

  this->confFile = NULL;
  this->confDir = NULL;

  execFrame = new Frame("Execute-Tags:");
  {
    Box* execBox;                //!< The Box that holds the ExecutionOptions.

    execBox = new Box('v');
    execFrame->setGroupName(CONFIG_SECTION_MISC);
    {
      Button* start;               //!< The start Button of orxonox.
      Menu* verboseMode;           //!< A Menu for setting the verbose-Mode. @todo setting up a verbose-class.
      CheckButton* alwaysShow;     //!< A CheckButton, for if orxonox should start with or without gui.
      Button* quit;                //!< A Button to quit the Gui without starting orxonox.

      start = new Button("Start");
#ifdef HAVE_GTK2
      start->connectSignal("clicked", this, startOrxonox);
#endif /* HAVE_GTK2 */
      execBox->fill(start);
      this->saveSettings = new CheckButton(CONFIG_NAME_SAVE_SETTINGS);
      this->saveSettings->value = 1;
      this->saveSettings->saveability();
      execBox->fill(this->saveSettings);

#ifdef DEBUG
      verboseMode = new Menu(CONFIG_NAME_VERBOSE_MODE, "nothing",
#if DEBUG >=1
                             "error",
#endif
#if DEBUG >=2
                             "warning",
#endif
#if DEBUG >=3
                             "info",
#endif
#if DEBUG >=4
                             "debug",
#endif
#if DEBUG >=5
                             "heavydebug",
#endif
                             "lastItem");
      verboseMode->setFlagName("verbose", "v", 2);
      verboseMode->setDescription("Sets the Output Mode", "This Enables Outbug messages\n"
                                  "0: nothing will be displayed, but stuff one cannot do without (eg.GUI)\n"
#if DEBUG >=1
                                  "1: error: outputs all the above and errors"
#endif
#if DEBUG >=2
                                  "2: warning: outputs all the above plus warnings"
#endif
#if DEBUG >=3
                                  "3: info: outputs all the above plus Information"
#endif
#if DEBUG >=4
                                  "4: debug: displays all the above plus debug information"
#endif
#if DEBUG >=5
                                  "5: heavydebug: displays all the above plus heavy debug information: WARNING: the game will run very slow with this."
#endif
                                  );
      verboseMode->saveability();
      execBox->fill(verboseMode);
#endif

      alwaysShow = new CheckButton(CONFIG_NAME_ALWAYS_SHOW_GUI);
      alwaysShow->setFlagName("gui", "g", 0);
      alwaysShow->setDescription("shows the gui when starting orxonox");
      alwaysShow->saveability();
      execBox->fill(alwaysShow);

      quit = new Button("Quit");
#ifdef HAVE_GTK2
      quit->connectSignal("clicked", this, GuiExec::quitGui);
      //  Window::mainWindow->connectSignal("remove", this, GuiExec::quitGui);
      Window::mainWindow->connectSignal("destroy", this, GuiExec::quitGui);
#endif /* HAVE_GTK2 */
      execBox->fill(quit);
    }
    execFrame->fill(execBox);
  }
  setMainWidget(execFrame);
}

/**
 *  Destructs the Execution-stuff
*/
GuiExec::~GuiExec()
{
  if(this->confFile)
    delete []this->confFile;
  if(this->confDir)
    delete []this->confDir;
}

/* FILE HANDLING */

/**
 *  sets the Directory of the configuration files
 * @param confDir the Directory for the configuration files
*/
void GuiExec::setConfDir(const char* confDir)
{
  this->confDir = ResourceManager::homeDirCheck(confDir);

  PRINTF(5)("Config Directory is: %s.\n", this->confDir);
  //! @todo F** Windows-support
#ifndef __WIN32__
  mkdir(this->confDir, 0755);
#else /* __WiN32__ */
  mkdir(this->confDir);
#endif /* __WIN32__ */
}

/**
 *  Sets the location of the configuration File.
 * @param fileName the location of the configFile

   The name will be parsed from ~/ to /home/[username] on unix and c:/Documents and Settings/username/Settings/ on Windows
*/
void GuiExec::setConfFile(const char* fileName)
{
  if (!this->confDir)
    this->setConfDir("~/");
  this->confFile = new char[strlen(this->confDir)+strlen(fileName)+2];
  sprintf(this->confFile, "%s/%s", this->confDir, fileName);
  PRINTF(5)("ConfigurationFile is %s.\n", this->confFile);
}

/**
 * @returns The name of the Configuration-File
*/
const char* GuiExec::getConfigFile() const
{
  return this->confFile;
}

/**
 *  checks if a option should be saved.
 * @return 1 if it should 0 if not/
*/
int GuiExec::shouldsave()
{
  return(static_cast<Option*>(this->saveSettings)->value);
}

/**
  *  Saves the configuration-file to the Disk.\n
  * @param widget from which Widget on should be saved.

    this Function only opens and closes the file, in between GuiExec::writeFileText(Widget* widget) will execute the real writing process.
*/
void GuiExec::writeToFile(Widget* widget)
{
  IniParser iniParser;
  this->writeFileText(widget, &iniParser, 0);
  char* fileName = ResourceManager::homeDirCheck(confFile);
  iniParser.writeFile(fileName);
  delete[] fileName;
}

/**
 *  Actually writes into the configuration file to the disk.
 * @param widget from which Widget on should be saved.
 * @param parser the IniParser to write to.
 * @param depth initially "0", and grows higher, while new Groups are bundeled.
*/
void GuiExec::writeFileText(Widget* widget, IniParser* parser, int depth)
{
//   int counter = 0;
//   while(counter < depth &&((widget->optionType > GUI_NOTHING
//                               &&(static_cast<Option*>(widget)->isSaveable()))
//                              ||(widget->optionType < GUI_NOTHING
//                                 && static_cast<Packer*>(widget)->getGroupName())))
//     {
//       fprintf(this->CONFIG_FILE, "  ", depth);
//       counter++;
//     }

  // check if it is a Packer, and if it is, check if it has a name and if there is something in it.
  if(widget->optionType < GUI_NOTHING)
    {
      if(static_cast<Packer*>(widget)->getGroupName())
        {
          parser->addSection(static_cast<Packer*>(widget)->getGroupName());
          this->writeFileText(static_cast<Packer*>(widget)->down, parser, depth+1);
        }
      else
        {
          this->writeFileText(static_cast<Packer*>(widget)->down, parser, depth);
        }
    }

  if(widget->optionType > GUI_NOTHING)
    if (static_cast<Option*>(widget)->isSaveable())
    {
      char* saveName = static_cast<Option*>(widget)->save();
      parser->addVar(static_cast<Option*>(widget)->title, saveName);
      delete[] saveName;
    }

  if(widget->next != NULL)
    this->writeFileText(widget->next, parser, depth);
}

/**
 * @brief Reads in Configuration Data.
 * @param widget from which Widget on should be saved.
*/
void GuiExec::readFromFile(Widget* widget)
{
  char* fileName = ResourceManager::homeDirCheck(confFile);
  IniParser iniParser(fileName);
  delete[] fileName;
  if (!iniParser.isOpen())
    return;

  iniParser.firstSection();
  Widget* groupWidget = widget;
  const char* groupName;
  const char* widgetName;
  VarInfo varInfo;
  while (groupName = iniParser.getCurrentSection())
  {
    printf("GROUP:::%s\n", groupName);
    if((groupWidget = locateGroup(widget, groupName, 1))==NULL)
      {
	PRINTF(2)("!!There is no group called %s in this GUI.\n First best Widget will get the Infos assigned.\n Config-File will be updated in next Save\n", groupName);
	groupWidget = widget;
	continue;
      }
    else
      PRINT(4)("Group %s located.\n", static_cast<Packer*>(groupWidget)->groupName);

    const char* entryName;
    iniParser.firstVar();
    while(entryName = iniParser.getCurrentName())
    {
      PRINTF(4)("ENTRY:::%s = %s\n", entryName, iniParser.getCurrentValue());
      varInfo.variableName = entryName;
      varInfo.variableValue = iniParser.getCurrentValue();
      groupWidget->walkThrough(this->readFileText, &varInfo, 0);
      iniParser.nextVar();
    }

    iniParser.nextSection();
  }
  widget->walkThrough(widget->setOptions, 0);
}

/**
 *  Maps Confugurations to the Options.
 * @param widget which widget downwards
 * @param varInfo Information about the Variable to read
*/
void GuiExec::readFileText(Widget* widget, void* varInfo)
{
  VarInfo* info =(VarInfo*)varInfo;
  if (info == NULL || info->variableName == NULL)
    return;

  if(widget->title && !strcmp(widget->title, info->variableName))
    {
      PRINT(5)("Located Option %s.\n", widget->title);
      if(widget->optionType > GUI_NOTHING)
	if (info->variableValue != NULL)
	  static_cast<Option*>(widget)->load(info->variableValue);
    }
}

/**
 *  Locates a Group.
 * @param widget The Widget from where to search from
 * @param groupName The GroupName for which to search.
 * @param depth The Depth of the search seen from the first widget we searched from.
 * @returns The Widget that holds the Group, or the NULL if the Group wasn't found.

   @todo do this in gui-gtk.
*/
Widget* GuiExec::locateGroup(Widget* widget, const char* groupName, int depth)
{
  Widget* tmp;
  if (widget  == NULL || groupName == NULL)
    return NULL;

  if(widget->optionType < GUI_NOTHING)
    {
      if(static_cast<Packer*>(widget)->getGroupName() != NULL &&
         !strcmp(groupName, static_cast<Packer*>(widget)->getGroupName()))
	return widget;
      else
        {
          if((tmp = locateGroup(static_cast<Packer*>(widget)->down,
				groupName, depth+1)) != NULL)
            return tmp;
        }
    }

  if(widget->next != NULL && depth != 0)
    {
      if((tmp = locateGroup(widget->next, groupName, depth)) != NULL)
        return tmp;
    }
  return NULL;
}

/**
 *  Starts ORXONOX.(not really implemented yet, but the function is there.\n
 * @param widget the widget that executed the start command
 * @param data additional data

   This is a Signal and can be executed through Widget::signal_connect
*/
#ifdef HAVE_GTK2
int GuiExec::startOrxonox(GtkWidget* widget, void* data)
#else /* HAVE_GTK2 */
int GuiExec::startOrxonox(void* widget, void* data)
#endif /* HAVE_GTK2 */
{
  Window::mainWindow->hide();

#ifdef HAVE_GTK2
  gtk_widget_destroy(Window::mainWindow->widget);
#else
  quitGui(widget, data);
#endif /* HAVE_GTK2 */

  PRINT(3)("Starting Orxonox\n");
  Gui::startOrxonox = true;
}

/**
 *  Starts ORXONOX.(not really implemented yet, but the function is there.\n
 * @param widget the widget that executed the start command
 * @param data additional data

   This is a Signal and can be executed through Widget::signal_connect
*/
#ifdef HAVE_GTK2
int GuiExec::quitGui(GtkWidget* widget, void* data)
#else /* HAVE_GTK2 */
int GuiExec::quitGui(void* widget, void* data)
#endif /* HAVE_GTK2 */
{
  GuiExec* exec = (GuiExec*)data;
  if(exec->shouldsave())
    exec->writeToFile(Window::mainWindow);
#ifdef HAVE_GTK2
  gtk_main_quit();
  while(gtk_events_pending()) gtk_main_iteration();
#endif /* HAVE_GTK2 */
}