#pragma once

#include <Arduino.h>

struct SdCardInfo {
  bool mounted;
  bool present;
  const char *type;       // MMC / SDSC / SDHC / UNKNOWN / NONE
  const char *filesystem; // FAT12 / FAT16 / FAT32 / exFAT / FAT / —
  uint64_t card_bytes;    // 卡物理容量
  uint64_t total_bytes;   // 分区总容量
  uint64_t used_bytes;
  uint64_t free_bytes;
  uint32_t root_files;    // 根目录条目数
  String error;           // 失败原因
};

bool sd_init();
void sd_deinit();
SdCardInfo sd_read_info();
String format_bytes(uint64_t bytes);