import browser from 'webextension-polyfill';

import {Queue} from '../types.d';
import Settings from './settings';

/** Initializes the background message handler. */
export function backgroundHandler() {
  browser.runtime.onMessage.addListener((request: Queue.Message<unknown>) => {
    if (request.action === 'queue open url') {
      // @ts-expect-error Changing <unknown> to <Queue.Item>.
      const message: Queue.Message<Queue.Item> = request;
      window.location.href = message.data.url;
    }
  });
}

/** Returns the WebExtension Manifest. */
export function getManifest(): Queue.Manifest {
  return browser.runtime.getManifest();
}

/**
 * Updates the extension icon badge with the number of saved items. This can
 * only be run from the background script.
 */
export async function updateBadge(settings: Settings): Promise<void> {
  await browser.browserAction.setBadgeBackgroundColor({
    color: '#2a2041',
  });

  await browser.browserAction.setBadgeText({
    text: settings.queue.length === 0 ? null : settings.queue.length.toString(),
  });

  browser.browserAction.setBadgeTextColor({
    color: '#f2efff',
  });
}