#ifndef _FS_EXT2_H
#define _FS_EXT2_H

#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include <fs/vfs.h>

#define EXT2_SUPER_MAGIC 0xEF53

/* ext2 Superblock Definition */
typedef struct {
    uint32_t s_inodes_count;
    uint32_t s_blocks_count;
    uint32_t s_r_blocks_count;
    uint32_t s_free_blocks_count;
    uint32_t s_free_inodes_count;
    uint32_t s_first_data_block;
    uint32_t s_log_block_size;
    uint32_t s_log_frag_size;
    uint32_t s_blocks_per_group;
    uint32_t s_frags_per_group;
    uint32_t s_inodes_per_group;
    uint32_t s_mtime;
    uint32_t s_wtime;
    uint16_t s_mnt_count;
    uint16_t s_max_mnt_count;
    uint16_t s_magic;
    uint16_t s_state;
    uint16_t s_errors;
    uint16_t s_minor_rev_level;
    uint32_t s_lastcheck;
    uint32_t s_checkinterval;
    uint32_t s_creator_os;
    uint32_t s_rev_level;
    uint16_t s_def_resuid;
    uint16_t s_def_resgid;
} __attribute__((packed)) ext2_superblock_t;

/* ext2 Inode Structure */
typedef struct {
    uint16_t i_mode;
    uint16_t i_uid;
    uint32_t i_size;
    uint32_t i_atime;
    uint32_t i_ctime;
    uint32_t i_mtime;
    uint32_t i_dtime;
    uint16_t i_gid;
    uint16_t i_links_count;
    uint32_t i_blocks;
    uint32_t i_flags;
    uint32_t i_osd1;
    uint32_t i_block[15];
    uint32_t i_generation;
    uint32_t i_file_acl;
    uint32_t i_dir_acl;
    uint32_t i_faddr;
    uint8_t  i_osd2[12];
} __attribute__((packed)) ext2_inode_t;

void ext2_init(void);
vfs_node_t* ext2_mount(const char* block_device_name);

#endif // _FS_EXT2_H