/**
 * Facade over `client.instance` (`aaf_sdk.js`):
 * `getContext`, `create`, `getAllInfo`, `getInfo`, `sendData`, `receiveData`, `close`.
 *
 * ECC source: `com.drishti.ameyo.application.app.impl.InstanceService`
 * (service name **`instance`**).
 */

export type GwtInstanceSlotType = "MODAL" | "POPUP" | "BACKGROUND" | (string & {});

export interface InstanceCreationData {
  /** Modal title (slotType = "MODAL"). */
  title?: string;
  /** Pixel sizes — modal/popup. */
  width?: number;
  height?: number;
  /** Pixel offsets — popup. */
  top?: number;
  left?: number;
  /** Auto-close modal/popup after (ms). */
  autoClose?: number;
  /** Free-form per-slot overrides. */
  [key: string]: unknown;
}

export interface AafInstanceApi {
  getContext: () => Promise<unknown>;
  create: (
    slotType: GwtInstanceSlotType,
    creationData: InstanceCreationData,
    contextData?: unknown
  ) => Promise<unknown>;
  getAllInfo: (appId: string) => Promise<unknown>;
  getInfo: (instanceId: string) => Promise<unknown>;
  sendData: (instanceId: string, contextData: unknown) => Promise<unknown>;
  receiveData: (eventCallback: (data: unknown) => void) => Promise<unknown>;
  close: (instanceId: string) => Promise<unknown>;
}

export interface HasInstance {
  instance: AafInstanceApi;
}

export function instanceGetContext(client: HasInstance): Promise<unknown> {
  return client.instance.getContext();
}

export function instanceCreate(
  client: HasInstance,
  slotType: GwtInstanceSlotType,
  creationData: InstanceCreationData,
  contextData?: unknown
): Promise<unknown> {
  return client.instance.create(slotType, creationData, contextData);
}

export function instanceGetAllInfo(client: HasInstance, appId: string): Promise<unknown> {
  return client.instance.getAllInfo(appId);
}

export function instanceGetInfo(client: HasInstance, instanceId: string): Promise<unknown> {
  return client.instance.getInfo(instanceId);
}

export function instanceSendData(
  client: HasInstance,
  instanceId: string,
  contextData: unknown
): Promise<unknown> {
  return client.instance.sendData(instanceId, contextData);
}

/** Subscribe to inbound `instance.sendData` payloads from sibling app instances. */
export function instanceReceiveData(
  client: HasInstance,
  callback: (data: unknown) => void
): Promise<unknown> {
  return client.instance.receiveData(callback);
}

export function instanceClose(client: HasInstance, instanceId: string): Promise<unknown> {
  return client.instance.close(instanceId);
}