import { Unregisterable } from '../shared';

export interface UI {
	CloseGameWindow(appId: number, windowId: number): void;

	GetGameWindowsInfo(appId: number, windowIds: number[]): Promise<GameWindowInfo>;

	RegisterForFocusChangeEvents(callback: (event: FocusChangeEvent) => void): Unregisterable;

	// appId is 0 if unknown app is focused
	RegisterForOverlayGameWindowFocusChanged(callback: (appId: number, overlayPid: number) => void): Unregisterable;

	RegisterForSystemKeyEvents(callback: (event: SystemKeyEvent) => void): Unregisterable;
}

interface SystemKeyEvent {
	/** @todo enum */
	eKey: number;
	nControllerIndex: number;
}

export interface FocusChangeEvent {
	focusedApp: FocusedApp;
	rgFocusable: FocusedApp[];
}

export interface FocusedApp {
	appid: number;
	pid: number;
	windowid: number;
	strExeName: string;
}

export interface GameWindowInfo {
	bCanClose: boolean;
	strTitle: string;
	windowid: number;
}