/* webui_store.h — SQLite-backed persistence for all web-UI-owned state:
 * accounts, the category/tag taxonomy, and RSS feeds/rules/indexers.
 *
 * Owned entirely by the webui plugin (the daemon persists none of this).
 * Account passwords are PBKDF2-HMAC-SHA256 with a per-user random salt. All
 * calls are thread-safe (the store serializes access to its SQLite handle). */
#ifndef NAUT_WEBUI_STORE_H
#define NAUT_WEBUI_STORE_H

#include <stdbool.h>
#include <stddef.h>
#include <jansson.h>

typedef struct webui_store webui_store;

/* Open (creating if needed) the account database at `path`. Returns NULL on
 * failure. The schema is created/migrated on open. */
webui_store *webui_store_open(const char *path);
void webui_store_close(webui_store *s);

/* Number of accounts, or -1 on error. */
int webui_store_user_count(webui_store *s);
/* Number of admin accounts, or -1 on error. */
int webui_store_admin_count(webui_store *s);
bool webui_store_user_exists(webui_store *s, const char *username);

/* Verify a username/password pair (constant-time). On success, copies the
 * account's role ("admin"/"user") into role_out. */
bool webui_store_verify(webui_store *s, const char *username,
                       const char *password, char *role_out, size_t role_sz);

/* Create an account. `role` must be "admin" or "user" (defaults to "user" if
 * NULL/invalid). Returns false if the username already exists or on error. */
bool webui_store_create_user(webui_store *s, const char *username,
                            const char *password, const char *role);

bool webui_store_set_password(webui_store *s, const char *username,
                             const char *password);
/* Change an account's role ("admin"/"user"). */
bool webui_store_set_role(webui_store *s, const char *username, const char *role);
bool webui_store_delete_user(webui_store *s, const char *username);

/* Append {username, role, createdAt} objects (sorted by username) to the
 * json array `out`. Returns false on error. */
bool webui_store_list_users(webui_store *s, json_t *out);

/* --- category / tag taxonomy (web-UI organization, owned here) ------------- *
 * The save_* calls replace the whole list atomically; the load_* calls append
 * to the (array) `out`. Categories are {name, savePath}; tags are strings. */
bool webui_store_save_categories(webui_store *s, json_t *cats);
bool webui_store_load_categories(webui_store *s, json_t *out);
bool webui_store_save_tags(webui_store *s, json_t *tags);
bool webui_store_load_tags(webui_store *s, json_t *out);

/* --- RSS: feeds, articles, auto-download rules, Torznab indexers ----------- *
 * Fully relational: articles live in their own table (deduped by feed+key,
 * indexed), and a rule's feed scope lives in a rule_feeds join table. The web
 * layer operates on rows, not whole-list blobs. */

/* Feeds. upsert preserves an existing feed's lastUpdate (only the url changes);
 * remove also drops the feed's articles. feed_list appends
 * {name,url,lastUpdate,articles:[...]} (newest article first). feed_targets
 * appends lightweight {name,url} objects for the poller. */
bool webui_store_feed_upsert(webui_store *s, const char *name, const char *url);
bool webui_store_feed_remove(webui_store *s, const char *name);
bool webui_store_feed_set_updated(webui_store *s, const char *name, long ts);
bool webui_store_feed_list(webui_store *s, json_t *out);
bool webui_store_feed_targets(webui_store *s, json_t *out);
bool webui_store_feed_exists(webui_store *s, const char *name);

/* Articles. add inserts unless (feed,key) already exists: returns 1 if newly
 * inserted, 0 if a duplicate, -1 on error. trim keeps the newest `keep` for a
 * feed. mark_grabbed flags every article with this key. ungrabbed appends
 * {feed,key,title,magnet,torrentUrl} for not-yet-grabbed articles. */
int  webui_store_article_add(webui_store *s, const char *feed, json_t *article);
bool webui_store_article_trim(webui_store *s, const char *feed, int keep);
bool webui_store_article_mark_grabbed(webui_store *s, const char *key);
bool webui_store_articles_ungrabbed(webui_store *s, json_t *out);

/* Rules. upsert replaces the rule row and its feed scope; list/get assemble the
 * rule with its affectedFeeds array. */
bool webui_store_rule_upsert(webui_store *s, json_t *rule);
bool webui_store_rule_remove(webui_store *s, const char *name);
bool webui_store_rule_list(webui_store *s, json_t *out);
json_t *webui_store_rule_get(webui_store *s, const char *name);
bool webui_store_rule_set_match(webui_store *s, const char *name, long ts);

/* Torznab indexers. */
bool webui_store_indexer_upsert(webui_store *s, json_t *indexer);
bool webui_store_indexer_remove(webui_store *s, const char *name);
bool webui_store_indexer_list(webui_store *s, json_t *out);

#endif /* NAUT_WEBUI_STORE_H */