/*
 *   ORXONOX - the hottest 3D action shooter ever to exist
 *                    > www.orxonox.net <
 *
 *
 *   License notice:
 *
 *   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
 *   of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 *   Author:
 *      Fabian 'x3n' Landau
 *      Reto Grieder
 *   Co-authors:
 *      ...
 *
 */

/**
@file
@brief
    Declaration of the Core class.
@details
    The Core class is a singleton, only used to configure some variables
    in the core through the config-file.
*/

#ifndef _Core_H__
#define _Core_H__

#include "CorePrereqs.h"

#include <cassert>
#include "OrxonoxClass.h"
#include "util/OutputHandler.h"

namespace orxonox
{
    /**
    @brief
        The Core class is a singleton used to configure the program basics.
    @details
        The class provides information about the media, config and log path.
        It determines those by the use of platform specific functions.
    */
    class _CoreExport Core : public OrxonoxClass
    {
        public:
            /**
            @brief
                Determines the executable path, checks for build directory runs, creates
                the output directories and sets up the other core library singletons.
            @throws
                GeneralException
            */
            Core();
            ~Core();

            void initialise(int argc, char** argv);
            void setConfigValues();

            void update(const Clock& time);

            static Core& getInstance() { assert(Core::singletonRef_s); return *Core::singletonRef_s; }

            static int   getSoftDebugLevel(OutputHandler::OutputDevice device = OutputHandler::LD_All);
            static void  setSoftDebugLevel(OutputHandler::OutputDevice device, int level);
            static const std::string& getLanguage();
            static void  resetLanguage();

            static void tsetMediaPath(const std::string& path)
            { assert(singletonRef_s); singletonRef_s->_tsetMediaPath(path); }
            //! Returns the path to the config files as boost::filesystem::path
            static const boost::filesystem::path& getMediaPath();
            //! Returns the path to the config files as boost::filesystem::path
            static const boost::filesystem::path& getConfigPath();
            //! Returns the path to the log files as boost::filesystem::path
            static const boost::filesystem::path& getLogPath();
            //! Returns the path to the data files as std::string
            static std::string getMediaPathString();
            //! Returns the path to the config files as std::string
            static std::string getConfigPathString();
            //! Returns the path to the log files as std::string
            static std::string getLogPathString();

        private:
            Core(const Core&); //!< Don't use (undefined symbol)

            void checkDevBuild();
            void setExecutablePath();
            void createDirectories();
            void setThreadAffinity(int limitToCPU);

            void resetLanguageIntern();
            void initializeRandomNumberGenerator();
            void debugLevelChanged();
            void languageChanged();
            void mediaPathChanged();
            void _tsetMediaPath(const std::string& path);

            // Singletons
            ConfigFileManager*    configFileManager_;
            Language*             languageInstance_;
            LuaBind*              luaBind_;
            Shell*                shell_;
            SignalHandler*        signalHandler_;
            TclBind*              tclBind_;
            TclThreadManager*     tclThreadManager_;

            int softDebugLevel_;                            //!< The debug level
            int softDebugLevelConsole_;                     //!< The debug level for the console
            int softDebugLevelLogfile_;                     //!< The debug level for the logfile
            int softDebugLevelShell_;                       //!< The debug level for the ingame shell
            std::string language_;                          //!< The language
            bool bInitializeRandomNumberGenerator_;         //!< If true, srand(time(0)) is called
            std::string mediaPathString_;                   //!< Path to the data/media file folder as string
            bool isDevBuild_;                               //!< True for builds in the build directory (not installed)
            bool loaded_;                                   //!< Only true if constructor was interrupted

            static Core* singletonRef_s;
    };
}

#endif /* _Core_H__ */