/**
 * `client.lifeCycle` from `aaf_sdk.js` — app iframe lifecycle (modal close, unload).
 */

export interface AafLifeCycleApi {
  register: (eventName: string, eventCallback: (data: unknown) => void) => Promise<unknown>;
  unRegister: (eventName: string, eventCallback: (data: unknown) => void) => void;
}

export interface HasLifeCycle {
  lifeCycle: AafLifeCycleApi;
}

/** Events documented for the lifeCycle service. */
export const GwtLifeCycleEventNames = {
  /** Host clicked modal close; app may respond with `modalCloseConfirmation` within ~5s. Modal-only slot. */
  appModalClose: "appModalClose",
  /** Iframe / app is being torn down. All locations. */
  appUnload: "appUnload"
} as const;

export type GwtLifeCycleEventName = (typeof GwtLifeCycleEventNames)[keyof typeof GwtLifeCycleEventNames];

export function registerLifeCycleEvent(
  client: HasLifeCycle,
  eventName: GwtLifeCycleEventName | (string & {}),
  callback: (data: unknown) => void
): Promise<unknown> {
  return client.lifeCycle.register(eventName, callback);
}

export function unregisterLifeCycleEvent(
  client: HasLifeCycle,
  eventName: GwtLifeCycleEventName | (string & {}),
  callback: (data: unknown) => void
): void {
  client.lifeCycle.unRegister(eventName, callback);
}