#ifndef BLUE_IO_FILE_H_
#define BLUE_IO_FILE_H_

#include <blue/core/error.h>
#include <blue/core/macros.h>
#include <blue/core/misc.h>
#include <blue/core/stream.h>

B_DECLS_BEGIN;

#define B_TYPE_FILE (b_file_get_type())

B_DECLARE_TYPE(b_file);

B_TYPE_CLASS_DECLARATION_BEGIN(b_file)
B_TYPE_CLASS_DECLARATION_END(b_file)

#define B_OFFSET_CURRENT ((size_t)-1)

typedef enum b_seek_basis {
	B_SEEK_BEGINNING,
	B_SEEK_CURRENT,
	B_SEEK_END
} b_seek_basis;

typedef enum b_file_attribute {
	B_FILE_ATTRIB_NORMAL = 0x01u,
	B_FILE_ATTRIB_DIRECTORY = 0x02u,
	B_FILE_ATTRIB_BLOCK_DEVICE = 0x04u,
	B_FILE_ATTRIB_CHAR_DEVICE = 0x08u,
	B_FILE_ATTRIB_SYMLINK = 0x80u,
} b_file_attribute;

typedef enum b_file_mode {
	B_FILE_READ_ONLY = 0x01u,
	B_FILE_WRITE_ONLY = 0x02u,
	B_FILE_READ_WRITE = B_FILE_READ_ONLY | B_FILE_WRITE_ONLY,
	B_FILE_TRUNCATE = 0x04u,
	B_FILE_CREATE = 0x08u,
	B_FILE_CREATE_ONLY = 0x10u | B_FILE_CREATE,
	B_FILE_APPEND = 0x20u,
	B_FILE_BINARY = 0x40u,
	B_FILE_DELETE_ON_CLOSE = 0x80u,
	B_FILE_SHADOW = 0x100u,
} b_file_mode;

typedef struct b_file_info {
	b_file_attribute attrib;
	b_file_mode mode;

	size_t length;
} b_file_info;

BLUE_API b_type b_file_get_type(void);

BLUE_API b_result b_file_open(
	B_TYPE_FWDREF(b_directory) * root, const B_TYPE_FWDREF(b_path) * path,
	b_file_mode mode, b_file **out);
BLUE_API b_result b_file_open_temp(b_file_mode mode, b_file **out);
BLUE_API b_result b_file_open_shadow(
	b_file *original, b_file_mode mode, b_file **out);

BLUE_API b_status b_file_open_stream(b_file *file, b_stream **out);
BLUE_API b_status b_file_stat(b_file *file, b_file_info *out);
BLUE_API b_status b_file_size(b_file *file, size_t *out_len);
BLUE_API b_status b_file_cursor(b_file *file, size_t *out_pos);
BLUE_API b_status b_file_resize(b_file *file, size_t len);
BLUE_API b_status b_file_seek(b_file *file, long long offset, b_seek_basis basis);
BLUE_API const B_TYPE_FWDREF(b_path) * b_file_path(const b_file *file);

BLUE_API b_status b_file_swap_shadow(b_file *main_file, b_file *shadow_file);

BLUE_API b_status b_file_read(
	b_file *file, size_t offset, size_t len, void *buf, size_t *nr_read);
BLUE_API b_status b_file_write(
	b_file *file, size_t offset, size_t len, const void *buf,
	size_t *nr_written);

B_DECLS_END;

#endif