/**
 * Known `client.globalEvent` names for Ameyo AAF iframe apps.
 *
 * Primary source: ECC `GlobalEventService.GlobalEventEnum` (eventName strings).
 * Additional strings appear in some integration docs or legacy UIs — included with comments.
 */

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

/** All eventName values from ECC `GlobalEventService.GlobalEventEnum` (Ameyo 4.x). */
export const GWT_GLOBAL_EVENTS_ECC = {
  campaignSelectionChange: "campaignSelectionChange",
  customerCallMemberCreated: "customerCallMemberCreated",
  newChatMessageAdded: "newChatMessageAdded",
  callRinging: "callRinging",
  chatDialogFocus: "chatDialogFocus",
  callConnected: "callConnected",
  callHungup: "callHungup",
  customerChatMemberCreated: "customerChatMemberCreated",
  chatConnected: "chatConnected",
  chatHungup: "chatHungup",
  pageVisibilityChange: "pageVisibilityChange",
  aqRequestAdded: "aqRequestAdded",
  aqRequestRemoved: "aqRequestRemoved",
  customerCallMemberDeleted: "customerCallMemberDeleted",
  userCallMemberDeleted: "userCallMemberDeleted",
  userCallMemberCreated: "userCallMemberCreated",
  userStateChange: "userStateChange",
  callHold: "callHold",
  missedCallAdded: "missedCallAdded",
  missedCallModified: "missedCallModified",
  missedCallRemoved: "missedCallRemoved",
  crmStateChange: "crmStateChange",
  voiceCustomerLinked: "voiceCustomerLinked",
  videoCallRinging: "videoCallRinging",
  videoCallConnected: "videoCallConnected",
  videoCallEnded: "videoCallEnded",
  canDisposeVideoStateChange: "canDisposeVideoStateChange",
  attachmentAddedInTicket: "attachmentAddedInTicket",
  attachmentMetadataUpdated: "attachmentMetadataUpdated",
  customerStateChange: "customerStateChange",
  callHungupStatus: "callHungupStatus"
} as const;

/**
 * Doc / older samples sometimes use these strings instead of the ECC enum value.
 * Prefer `userStateChange`, `callHold`, `chatHungup` unless you have confirmed behaviour on your build.
 */
export const GWT_GLOBAL_EVENTS_DOC_ALIASES = {
  /** Some docs use this for hold; ECC enum is `callHold`. */
  callStageHold: "callStageHold",
  /** Listed alongside `chatHungup` in some globalEvent listings. */
  chatEnded: "chatEnded",
  /** One doc shows register("userStateBreak", …) while the heading says userStateChange; ECC uses `userStateChange`. */
  userStateBreak: "userStateBreak",
  /** Seen in older parent.js samples; voice teardown in GlobalEventEnum is `callHungup`. */
  callEnded: "callEnded"
} as const;

export const GwtGlobalEventNames = {
  ...GWT_GLOBAL_EVENTS_ECC,
  ...GWT_GLOBAL_EVENTS_DOC_ALIASES
} as const;

export type GwtGlobalEventName = (typeof GwtGlobalEventNames)[keyof typeof GwtGlobalEventNames];

/**
 * Ordered list of `globalEvent` names that the `globalEvent.register` loop in the
 * SDK Debugger app should subscribe to.
 *
 * Only ECC `GlobalEventEnum` entries are included — the doc-only aliases in
 * {@link GWT_GLOBAL_EVENTS_DOC_ALIASES} (`callEnded`, `chatEnded`, `userStateBreak`,
 * `callStageHold`) are **not** present in `GlobalEventEnum.values()`, so the host
 * always answers them with code 121 (`requested data object does not exists`).
 * Listing them here would create permanent registration-error rows in the UI.
 */
export const GWT_ALL_GLOBAL_EVENT_NAMES: readonly GwtGlobalEventName[] = [
  ...Object.values(GWT_GLOBAL_EVENTS_ECC)
];

export function registerGlobalEvent(
  client: HasGlobalEvent,
  eventName: GwtGlobalEventName | (string & {}),
  callback: (data: unknown) => void
): Promise<unknown> {
  return client.globalEvent.register(eventName, callback);
}

export function unregisterGlobalEvent(
  client: HasGlobalEvent,
  eventName: GwtGlobalEventName | (string & {}),
  callback: (data: unknown) => void
): void {
  client.globalEvent.unRegister(eventName, callback);
}