package hub

// AdmittedCount is how many participations are admitted in the room —
// the one number the drive surface reads back out of a live meeting
// (spec §8.2: the count of admitted peers, never their names or the
// chat). A room nobody has opened answers zero, which is what a
// meeting with no room actually means; the caller already knows the
// meeting exists, so there is nothing to distinguish.
//
// Taken under the hub's own lock, like every other reader, and built
// on admittedCountLocked so the API and the mesh cap can never
// disagree about what "admitted" counts.
func (h *Hub) AdmittedCount(sqid string) int {
	h.mu.Lock()
	defer h.mu.Unlock()
	r, ok := h.rooms[sqid]
	if !ok {
		return 0
	}
	return admittedCountLocked(r)
}