export interface RotationDecisionTelemetryEvent {
  readonly occurredAt: number;
  readonly actorId: string;
  readonly abilityId: string;
  readonly targetId: string | null;
  readonly profileId: string;
  readonly ruleId: string;
  readonly reason: string;
}

type RotationDecisionListener = (event: RotationDecisionTelemetryEvent) => void;

const listeners = new Set<RotationDecisionListener>();

export function subscribeRotationDecisions(listener: RotationDecisionListener): () => void {
  listeners.add(listener);
  return () => listeners.delete(listener);
}

/** Observational only: listeners cannot alter or delay the selected action. */
export function emitRotationDecision(event: RotationDecisionTelemetryEvent): void {
  for (const listener of listeners) listener(event);
}