/*
 * 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.
 *
 * The Original Code is Copyright (C) 2009 Blender Foundation.
 * All rights reserved.
 */

/** \file
 * \ingroup GHOST
 */

#pragma once

#include "GHOST_Types.h"

class GHOST_ISystemPaths {
 public:
  /**
   * Creates the one and only system.
   * \return An indication of success.
   */
  static GHOST_TSuccess create();

  /**
   * Disposes the one and only system.
   * \return An indication of success.
   */
  static GHOST_TSuccess dispose();

  /**
   * Returns a pointer to the one and only system (nil if it hasn't been created).
   * \return A pointer to the system.
   */
  static GHOST_ISystemPaths *get();

 protected:
  /**
   * Constructor.
   * Protected default constructor to force use of static createSystem member.
   */
  GHOST_ISystemPaths()
  {
  }

  /**
   * Destructor.
   * Protected default constructor to force use of static dispose member.
   */
  virtual ~GHOST_ISystemPaths()
  {
  }

 public:
  /**
   * Determine the base dir in which shared resources are located. It will first try to use
   * "unpack and run" path, then look for properly installed path, including versioning.
   * \return Unsigned char string pointing to system dir (eg /usr/share/blender/).
   */
  virtual const GHOST_TUns8 *getSystemDir(int version, const char *versionstr) const = 0;

  /**
   * Determine the base dir in which user configuration is stored, including versioning.
   * If needed, it will create the base directory.
   * \return Unsigned char string pointing to user dir (eg ~/.blender/).
   */
  virtual const GHOST_TUns8 *getUserDir(int version, const char *versionstr) const = 0;

  /**
   * Determine a special ("well known") and easy to reach user directory.
   * \return Unsigned char string pointing to user dir (eg `~/Documents/`).
   */
  virtual const GHOST_TUns8 *getUserSpecialDir(GHOST_TUserSpecialDirTypes type) const = 0;

  /**
   * Determine the directory of the current binary
   * \return Unsigned char string pointing to the binary dir
   */
  virtual const GHOST_TUns8 *getBinaryDir() const = 0;

  /**
   * Add the file to the operating system most recently used files
   */
  virtual void addToSystemRecentFiles(const char *filename) const = 0;

 private:
  /** The one and only system paths. */
  static GHOST_ISystemPaths *m_systemPaths;

#ifdef WITH_CXX_GUARDEDALLOC
  MEM_CXX_CLASS_ALLOC_FUNCS("GHOST:GHOST_ISystemPaths")
#endif
};