tweb-i2p/src/lib/mtproto/telegramMeWebManager.ts

/*
 * https://github.com/morethanwords/tweb
 * Copyright (C) 2019-2021 Eduard Kuzmenko
 * https://github.com/morethanwords/tweb/blob/master/LICENSE
 * 
 * Originally from:
 * https://github.com/zhukov/webogram
 * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
 * https://github.com/zhukov/webogram/blob/master/LICENSE
 */

import App from "../../config/app";
import { MOUNT_CLASS_TO } from "../../config/debug";
import Modes from "../../config/modes";
import { tsNow } from "../../helpers/date";
import sessionStorage from '../sessionStorage';

export class TelegramMeWebManager {
  private disabled = /* false &&  */(Modes.test || App.domains.indexOf(location.hostname) === -1);

  public setAuthorized(canRedirect: boolean) {
    if(this.disabled) {
      return;
    }

    return sessionStorage.get('tgme_sync').then((curValue) => {
      const ts = tsNow(true);
      if(canRedirect &&
        curValue &&
        curValue.canRedirect === canRedirect &&
        (curValue.ts + 86400) > ts) {
        return;
      }

      sessionStorage.set({
        tgme_sync: {
          canRedirect, 
          ts
        }
      });

      const path = `_websync_?authed=${canRedirect ? '1' : '0'}&version=${encodeURIComponent(App.version + ' ' + App.suffix)}`;
      const urls = [
        '//telegram.me/' + path,
        '//t.me/' + path
      ];

      const promises = urls.map(url => {
        const script = document.createElement('script');
        const promise = new Promise<void>((resolve) => {
          script.onload = script.onerror = () => {
            script.remove();
            resolve();
          };
        });
        script.src = url;
        document.body.appendChild(script);
        return promise;
      });

      return Promise.all(promises);
    });
  }
}

const telegramMeWebManager = new TelegramMeWebManager();
MOUNT_CLASS_TO && (MOUNT_CLASS_TO.telegramMeWebManager = telegramMeWebManager);
export default telegramMeWebManager;