#ifndef DATASET_HASH_H
#define DATASET_HASH_H

#include <stddef.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

// Hash a directory and return combined digest
// dir: path to directory
// out_hash: output parameter, receives allocated hex string (caller must free with fh_free_string)
// Returns: 0 on success, -1 on error
int fh_hash_directory_combined(const char* dir, char** out_hash);

// Free a string previously returned by FFI functions
void fh_free_string(char* s);

// Get metrics in Prometheus format
// Returns: allocated string with metrics (caller must free with fh_free_string)
char* fh_get_metrics(void);

#ifdef __cplusplus
}
#endif

#endif // DATASET_HASH_H