import type { KernelAuthStatus } from "@lumeweb/libweb";
import defer from "p-defer";
import type { DeferredPromise } from "p-defer";
import Emittery from "emittery";
import objectDiff from "object-diff";

let queriesNonce = 1;
let queries: any = {};
let portsNonce = 0;
let openPorts = {} as any;
let timer = 20000;

let authStatus: KernelAuthStatus;
let authStatusKnown = false;
let authStatusDefer = defer();
let kernelFrame: HTMLIFrameElement;
let loggedInDefer = defer();
let booted = false;
let bootedDefer = defer();
bootedDefer.promise.then(() => {
  booted = true;
});

export const events = new Emittery();

export function getAuthStatusKnown() {
  return authStatusKnown;
}
export function setAuthStatusKnown(status: boolean) {
  authStatusKnown = status;
}

export function getAuthStatus(): KernelAuthStatus {
  return authStatus;
}

export function setAuthStatus(status: KernelAuthStatus) {
  let diff;
  if (!authStatus) {
    diff = status;
  } else {
    diff = objectDiff(authStatus, status);
  }

  authStatus = status;
  events.emit("authStatus", diff);
}

export function getQueriesNonce(): number {
  return queriesNonce;
}

export function increaseQueriesNonce() {
  queriesNonce++;
}

export function getTimer(): number {
  return timer;
}

export function setTimer(interval: number) {
  timer = interval;
}

export function getOpenPorts() {
  return openPorts;
}

export function setOpenPort(port: number, value: any) {
  openPorts[port] = value;
}
export function deleteOpenPort(port: number) {
  delete openPorts[port];
}

export function getPortsNonce(): number {
  return portsNonce;
}
export function increasePortsNonce() {
  portsNonce++;
}

export function addQuery(nonce: any, func: Function) {
  queries[nonce] = func;
}

export function getQueries() {
  return queries;
}

export function getQuery(nonce: any) {
  return queries[nonce];
}

export function deleteQuery(nonce: any) {
  delete queries[nonce];
}
export function clearOpenPorts() {
  openPorts = {};
}

export function getKernelIframe(): HTMLIFrameElement {
  return kernelFrame;
}

export function setKernelIframe(iframe: HTMLIFrameElement) {
  kernelFrame = iframe;
}

export function getAuthStatusDefer() {
  return authStatusDefer;
}

export function getLoggedInDefer() {
  return loggedInDefer;
}
export function resetLoggedInDefer() {
  loggedInDefer = defer();
}
export function awaitBooted(): Promise<unknown> {
  return bootedDefer.promise;
}
export function getBooted() {
  return booted;
}

export function resetBooted(): void {
  bootedDefer = defer();
  bootedDefer.promise.then(() => {
    booted = true;
  });
}

export function weAreBooted(): void {
  bootedDefer.resolve();
}