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/* $Id$ */

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/** @file fios.h Declarations for savegames operations */

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#ifndef FIOS_H

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#define FIOS_H

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#include "strings_type.h"

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#include "core/smallvec_type.hpp"

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enum {

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	/**

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	 * Slot used for the GRF scanning and such. This slot cannot be reused

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	 * as it will otherwise cause issues when pressing "rescan directories".

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	 * It can furthermore not be larger than LAST_GRF_SLOT as that complicates

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	 * the testing for "too much NewGRFs".

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	 */

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	CONFIG_SLOT    =  0,

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	/** Slot for the sound. */

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	SOUND_SLOT     =  1,

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	/** First slot useable for (New)GRFs used during the game. */

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	FIRST_GRF_SLOT =  2,

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	/** Last slot useable for (New)GRFs used during the game. */

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	LAST_GRF_SLOT  = 63,

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	/** Maximum number of slots. */

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	MAX_FILE_SLOTS = 64

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};

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enum SaveLoadDialogMode{

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	SLD_LOAD_GAME,

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	SLD_LOAD_SCENARIO,

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	SLD_SAVE_GAME,

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	SLD_SAVE_SCENARIO,

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	SLD_LOAD_HEIGHTMAP,

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	SLD_NEW_GAME,

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};

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/* The different types of files been handled by the system */

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enum FileType {

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	FT_NONE,      ///< nothing to do

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	FT_SAVEGAME,  ///< old or new savegame

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	FT_SCENARIO,  ///< old or new scenario

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	FT_HEIGHTMAP, ///< heightmap file

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};

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enum FiosType {

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	FIOS_TYPE_DRIVE,

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	FIOS_TYPE_PARENT,

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	FIOS_TYPE_DIR,

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	FIOS_TYPE_FILE,

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	FIOS_TYPE_OLDFILE,

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	FIOS_TYPE_SCENARIO,

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	FIOS_TYPE_OLD_SCENARIO,

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	FIOS_TYPE_DIRECT,

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	FIOS_TYPE_PNG,

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	FIOS_TYPE_BMP,

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	FIOS_TYPE_INVALID = 255,

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};

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/* Deals with finding savegames */

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struct FiosItem {

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	FiosType type;

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	uint64 mtime;

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	char title[64];

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	char name[256 - 12 - 64];

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};

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/* Deals with the type of the savegame, independent of extension */

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struct SmallFiosItem {

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	int mode;             ///< savegame/scenario type (old, new)

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	FileType filetype;    ///< what type of file are we dealing with

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	char name[MAX_PATH];  ///< name

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	char title[255];      ///< internal name of the game

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};

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enum {

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	SORT_ASCENDING  = 0,

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	SORT_DESCENDING = 1,

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	SORT_BY_DATE    = 0,

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	SORT_BY_NAME    = 2

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};

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/* Variables to display file lists */

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extern SmallVector<FiosItem, 32> _fios_items; ///< defined in fios.cpp

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extern SmallFiosItem _file_to_saveload;

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extern SaveLoadDialogMode _saveload_mode;   ///< defined in misc_gui.cpp

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extern byte _savegame_sort_order;

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/* Launch save/load dialog */

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void ShowSaveLoadDialog(SaveLoadDialogMode mode);

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/* Get a list of savegames */

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void FiosGetSavegameList(SaveLoadDialogMode mode);

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/* Get a list of scenarios */

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void FiosGetScenarioList(SaveLoadDialogMode mode);

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/* Get a list of Heightmaps */

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void FiosGetHeightmapList(SaveLoadDialogMode mode);

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/* Free the list of savegames */

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void FiosFreeSavegameList();

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/* Browse to. Returns a filename w/path if we reached a file. */

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char *FiosBrowseTo(const FiosItem *item);

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/* Return path, free space and stringID */

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StringID FiosGetDescText(const char **path, uint32 *total_free);

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/* Delete a name */

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bool FiosDelete(const char *name);

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/* Make a filename from a name */

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void FiosMakeSavegameName(char *buf, const char *name, size_t size);

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/* Determines type of savegame (or tells it is not a savegame) */

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FiosType FiosGetSavegameListCallback(SaveLoadDialogMode mode, const char *file, const char *ext, char *title);

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int CDECL compare_FiosItems(const void *a, const void *b);

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#endif /* FIOS_H */