/*
 * 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) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 */
#ifndef __BLO_READFILE_H__
#define __BLO_READFILE_H__

#include "BLI_sys_types.h"

/** \file
 * \ingroup blenloader
 * \brief external readfile function prototypes.
 */

#ifdef __cplusplus
extern "C" {
#endif

struct BHead;
struct BlendThumbnail;
struct FileData;
struct LinkNode;
struct ListBase;
struct Main;
struct MemFile;
struct ReportList;
struct Scene;
struct UserDef;
struct View3D;
struct ViewLayer;
struct WorkSpace;
struct bScreen;
struct wmWindowManager;

typedef struct BlendHandle BlendHandle;

typedef enum eBlenFileType {
  BLENFILETYPE_BLEND = 1,
  /* BLENFILETYPE_PUB = 2, */     /* UNUSED */
  /* BLENFILETYPE_RUNTIME = 3, */ /* UNUSED */
} eBlenFileType;

typedef struct BlendFileData {
  struct Main *main;
  struct UserDef *user;

  int fileflags;
  int globalf;
  char filename[1024]; /* 1024 = FILE_MAX */

  struct bScreen *curscreen; /* TODO think this isn't needed anymore? */
  struct Scene *curscene;
  struct ViewLayer *cur_view_layer; /* layer to activate in workspaces when reading without UI */

  eBlenFileType type;
} BlendFileData;

typedef struct WorkspaceConfigFileData {
  struct Main *main; /* has to be freed when done reading file data */

  struct ListBase workspaces;
} WorkspaceConfigFileData;

struct BlendFileReadParams {
  uint skip_flags : 2; /* eBLOReadSkip */
  uint is_startup : 1;
};

/* skip reading some data-block types (may want to skip screen data too). */
typedef enum eBLOReadSkip {
  BLO_READ_SKIP_NONE = 0,
  BLO_READ_SKIP_USERDEF = (1 << 0),
  BLO_READ_SKIP_DATA = (1 << 1),
} eBLOReadSkip;
#define BLO_READ_SKIP_ALL (BLO_READ_SKIP_USERDEF | BLO_READ_SKIP_DATA)

BlendFileData *BLO_read_from_file(const char *filepath,
                                  eBLOReadSkip skip_flags,
                                  struct ReportList *reports);
BlendFileData *BLO_read_from_memory(const void *mem,
                                    int memsize,
                                    eBLOReadSkip skip_flags,
                                    struct ReportList *reports);
BlendFileData *BLO_read_from_memfile(struct Main *oldmain,
                                     const char *filename,
                                     struct MemFile *memfile,
                                     eBLOReadSkip skip_flags,
                                     struct ReportList *reports);

void BLO_blendfiledata_free(BlendFileData *bfd);

BlendHandle *BLO_blendhandle_from_file(const char *filepath, struct ReportList *reports);
BlendHandle *BLO_blendhandle_from_memory(const void *mem, int memsize);

struct LinkNode *BLO_blendhandle_get_datablock_names(BlendHandle *bh,
                                                     int ofblocktype,
                                                     int *tot_names);
struct LinkNode *BLO_blendhandle_get_previews(BlendHandle *bh, int ofblocktype, int *tot_prev);
struct LinkNode *BLO_blendhandle_get_linkable_groups(BlendHandle *bh);

void BLO_blendhandle_close(BlendHandle *bh);

/***/

#define BLO_GROUP_MAX 32
#define BLO_EMBEDDED_STARTUP_BLEND "<startup.blend>"

bool BLO_has_bfile_extension(const char *str);
bool BLO_library_path_explode(const char *path, char *r_dir, char **r_group, char **r_name);

/* Options controlling behavior of append/link code.
 * Note: merged with 'user-level' options from operators etc. in 16 lower bits
 *       (see eFileSel_Params_Flag in DNA_space_types.h). */
typedef enum BLO_LibLinkFlags {
  /* Generate a placeholder (empty ID) if not found in current lib file. */
  BLO_LIBLINK_USE_PLACEHOLDERS = 1 << 16,
  /* Force loaded ID to be tagged as LIB_TAG_INDIRECT (used in reload context only). */
  BLO_LIBLINK_FORCE_INDIRECT = 1 << 17,
} BLO_LinkFlags;

struct Main *BLO_library_link_begin(struct Main *mainvar, BlendHandle **bh, const char *filepath);
struct ID *BLO_library_link_named_part(struct Main *mainl,
                                       BlendHandle **bh,
                                       const short idcode,
                                       const char *name);
struct ID *BLO_library_link_named_part_ex(
    struct Main *mainl, BlendHandle **bh, const short idcode, const char *name, const int flag);
void BLO_library_link_end(struct Main *mainl,
                          BlendHandle **bh,
                          int flag,
                          struct Main *bmain,
                          struct Scene *scene,
                          struct ViewLayer *view_layer,
                          const struct View3D *v3d);

int BLO_library_link_copypaste(struct Main *mainl, BlendHandle *bh, const uint64_t id_types_mask);

void *BLO_library_read_struct(struct FileData *fd, struct BHead *bh, const char *blockname);

/* internal function but we need to expose it */
void blo_lib_link_restore(struct Main *oldmain,
                          struct Main *newmain,
                          struct wmWindowManager *curwm,
                          struct Scene *curscene,
                          struct ViewLayer *cur_render_layer);

typedef void (*BLOExpandDoitCallback)(void *fdhandle, struct Main *mainvar, void *idv);

void BLO_main_expander(BLOExpandDoitCallback expand_doit_func);
void BLO_expand_main(void *fdhandle, struct Main *mainvar);

/* Update defaults in startup.blend & userprefs.blend, without having to save and embed it */
void BLO_update_defaults_startup_blend(struct Main *mainvar, const char *app_template);
void BLO_update_defaults_workspace(struct WorkSpace *workspace, const char *app_template);

/* Version patch user preferences. */
void BLO_version_defaults_userpref_blend(struct Main *mainvar, struct UserDef *userdef);

struct BlendThumbnail *BLO_thumbnail_from_file(const char *filepath);

/* datafiles (generated theme) */
extern const struct bTheme U_theme_default;
extern const struct UserDef U_default;

#ifdef __cplusplus
}
#endif

#endif /* __BLO_READFILE_H__ */