#ifndef SDCARD_MANAGER_H
#define SDCARD_MANAGER_H

#include <Arduino.h>

#include <vector>

class SDCardManager {
 public:
  SDCardManager(uint8_t epd_sclk, uint8_t sd_miso, uint8_t epd_mosi, uint8_t sd_cs, uint8_t eink_cs);
  bool begin();
  bool ready() const;
  std::vector<String> listFiles(const char* path = "/", int maxFiles = 200);
  // Read the entire file at `path` into a String. Returns empty string on failure.
  String readFile(const char* path);
  // Low-memory helpers:
  // Stream the file contents to a `Print` (e.g. `Serial`, or any `Print`-derived object).
  // Returns true on success, false on failure.
  bool readFileToStream(const char* path, Print& out, size_t chunkSize = 256);
  // Read up to `bufferSize-1` bytes into `buffer`, null-terminating it. Returns bytes read.
  size_t readFileToBuffer(const char* path, char* buffer, size_t bufferSize, size_t maxBytes = 0);
  // Write a string to `path` on the SD card. Overwrites existing file.
  // Returns true on success.
  bool writeFile(const char* path, const String& content);
  // Ensure a directory exists, creating it if necessary. Returns true on success.
  bool ensureDirectoryExists(const char* path);

 private:
  uint8_t epd_sclk;
  uint8_t sd_miso;
  uint8_t epd_mosi;
  uint8_t sd_cs;
  uint8_t eink_cs;
  bool initialized = false;
};

#endif