/* subscribers.h - Subscriber pool & persistence management */
#ifndef __SUBSCRIBERS_H__
#define __SUBSCRIBERS_H__

#include <ilib/splay.h>

typedef struct subscriber_entry {
    splay_node_t node;
    char *email;
} subscriber_entry_t;

/* Global state wrapper */
typedef struct subscriber_pool {
    splay_t tree;
    char *filepath;
} subscriber_pool_t;

int subscriber_pool_init(subscriber_pool_t *pool, const char *filepath);
void subscriber_pool_destroy(subscriber_pool_t *pool);

int subscriber_add(subscriber_pool_t *pool, const char *email);
int subscriber_remove(subscriber_pool_t *pool, const char *email);
int subscriber_exists(subscriber_pool_t *pool, const char *email);

int subscriber_load_file(subscriber_pool_t *pool);
int subscriber_save_file(subscriber_pool_t *pool);

#endif /* __SUBSCRIBERS_H__ */