/**
 * Realtime Events - Shared Contracts
 *
 * Shared SSE payload shapes for portal + BFF.
 */

export interface RealtimeEventEnvelope<TEvent extends string = string, TData = unknown> {
  event: TEvent;
  data: TData;
}

export interface ServicesEligibilityChangedPayload {
  accountId: string;
  eligibility: string | null;
  timestamp: string;
}

export type AccountStreamEvent =
  | RealtimeEventEnvelope<"account.stream.ready", { topic: string; timestamp: string }>
  | RealtimeEventEnvelope<"account.stream.heartbeat", { topic: string; timestamp: string }>
  | RealtimeEventEnvelope<"services.eligibility.changed", ServicesEligibilityChangedPayload>;