stats method

@override Future<KeyStoreStats> stats()

Diagnostic snapshot of the keystore's state — total counts, TTL/TTB key counts, approximate size, oldest/newest timestamps. Intended for operator dashboards, not for runtime decisions on a hot path.

Implementation

@override
Future<KeyStoreStats> stats() async {
  final box = _getBox();
  final total = box.length;
  int ttl = 0;
  DateTime? oldest;
  DateTime? newest;
  for (final key in box.keys) {
    final entry = await getValue(key);
    if (entry == null) continue;
    if (entry.ttl != null) ttl++;
    final c = entry.notificationDateTime;
    if (c != null) {
      if (oldest == null || c.isBefore(oldest)) oldest = c;
      if (newest == null || c.isAfter(newest)) newest = c;
    }
  }
  return KeyStoreStats(
    totalKeys: total,
    ttlKeys: ttl,
    // Notifications have no `ttb` concept (they're queued
    // outbound — there's no "available at" semantics).
    ttbKeys: 0,
    sizeBytes: 0,
    oldestCreatedAt: oldest,
    newestCreatedAt: newest,
  );
}