/*
 * https://github.com/morethanwords/tweb
 * Copyright (C) 2019-2021 Eduard Kuzmenko
 * https://github.com/morethanwords/tweb/blob/master/LICENSE
 */

import type {GroupCallId, MyGroupCall} from './appGroupCallsManager';
import type GroupCallInstance from '../calls/groupCallInstance';
import type CallInstance from '../calls/callInstance';
import animationIntersector, {AnimationItemGroup} from '../../components/animationIntersector';
import appSidebarLeft, {LEFT_COLUMN_ACTIVE_CLASSNAME} from '../../components/sidebarLeft';
import appSidebarRight, {RIGHT_COLUMN_ACTIVE_CLASSNAME} from '../../components/sidebarRight';
import mediaSizes, {ScreenSize} from '../../helpers/mediaSizes';
import {logger, LogTypes} from '../logger';
import rootScope from '../rootScope';
import Chat, {ChatType} from '../../components/chat/chat';
import PopupNewMedia, {getCurrentNewMediaPopup} from '../../components/popups/newMedia';
import MarkupTooltip from '../../components/chat/markupTooltip';
import IS_TOUCH_SUPPORTED from '../../environment/touchSupport';
import SetTransition from '../../components/singleTransition';
import ChatDragAndDrop from '../../components/chat/dragAndDrop';
import {doubleRaf} from '../../helpers/schedulers';
import lottieLoader from '../rlottie/lottieLoader';
import useHeavyAnimationCheck, {dispatchHeavyAnimationEvent} from '../../hooks/useHeavyAnimationCheck';
import stateStorage from '../stateStorage';
import {MOUNT_CLASS_TO} from '../../config/debug';
import appNavigationController from '../../components/appNavigationController';
import AppPrivateSearchTab from '../../components/sidebarRight/tabs/search';
import I18n, {i18n, join, LangPackKey} from '../langPack';
import {ChatFull, ChatInvite, ChatParticipant, ChatParticipants, Message, MessageAction, MessageMedia, SendMessageAction, User, Chat as MTChat, UrlAuthResult, WallPaper} from '../../layer';
import PeerTitle from '../../components/peerTitle';
import PopupPeer, {PopupPeerCheckboxOptions} from '../../components/popups/peer';
import blurActiveElement from '../../helpers/dom/blurActiveElement';
import cancelEvent from '../../helpers/dom/cancelEvent';
import disableTransition from '../../helpers/dom/disableTransition';
import placeCaretAtEnd from '../../helpers/dom/placeCaretAtEnd';
import replaceContent from '../../helpers/dom/replaceContent';
import whichChild from '../../helpers/dom/whichChild';
import PopupElement from '../../components/popups';
import singleInstance, {InstanceDeactivateReason, SingleInstance} from '../mtproto/singleInstance';
import PopupStickers from '../../components/popups/stickers';
import PopupJoinChatInvite from '../../components/popups/joinChatInvite';
import {toast, toastNew} from '../../components/toast';
import debounce from '../../helpers/schedulers/debounce';
import pause from '../../helpers/schedulers/pause';
import {InternalLink, InternalLinkTypeMap, INTERNAL_LINK_TYPE} from './internalLink';
import MEDIA_MIME_TYPES_SUPPORTED from '../../environment/mediaMimeTypesSupport';
import IMAGE_MIME_TYPES_SUPPORTED from '../../environment/imageMimeTypesSupport';
import {NULL_PEER_ID} from '../mtproto/mtproto_config';
import telegramMeWebManager from '../mtproto/telegramMeWebManager';
import {ONE_DAY} from '../../helpers/date';
import TopbarCall from '../../components/topbarCall';
import confirmationPopup from '../../components/confirmationPopup';
import IS_GROUP_CALL_SUPPORTED from '../../environment/groupCallSupport';
import IS_CALL_SUPPORTED from '../../environment/callSupport';
import {CallType} from '../calls/types';
import {Modify, SendMessageEmojiInteractionData} from '../../types';
import htmlToSpan from '../../helpers/dom/htmlToSpan';
import getVisibleRect from '../../helpers/dom/getVisibleRect';
import {simulateClickEvent} from '../../helpers/dom/clickEvent';
import PopupCall from '../../components/call';
import copy from '../../helpers/object/copy';
import getObjectKeysAndSort from '../../helpers/object/getObjectKeysAndSort';
import numberThousandSplitter from '../../helpers/number/numberThousandSplitter';
import ChatBackgroundPatternRenderer from '../../components/chat/patternRenderer';
import {IS_FIREFOX} from '../../environment/userAgent';
import compareVersion from '../../helpers/compareVersion';
import {AppManagers} from './managers';
import uiNotificationsManager from './uiNotificationsManager';
import appMediaPlaybackController from '../../components/appMediaPlaybackController';
import {PHONE_NUMBER_REG_EXP} from '../richTextProcessor';
import wrapEmojiText from '../richTextProcessor/wrapEmojiText';
import wrapRichText, {CustomEmojiRendererElement, renderEmojis} from '../richTextProcessor/wrapRichText';
import wrapUrl from '../richTextProcessor/wrapUrl';
import generateMessageId from './utils/messageId/generateMessageId';
import getUserStatusString from '../../components/wrappers/getUserStatusString';
import getChatMembersString from '../../components/wrappers/getChatMembersString';
import {STATE_INIT} from '../../config/state';
import CacheStorageController from '../files/cacheStorage';
import themeController from '../../helpers/themeController';
import overlayCounter from '../../helpers/overlayCounter';
import appDialogsManager from './appDialogsManager';
import idleController from '../../helpers/idleController';
import EventListenerBase from '../../helpers/eventListenerBase';
import {AckedResult} from '../mtproto/superMessagePort';
import groupCallsController from '../calls/groupCallsController';
import callsController from '../calls/callsController';
import getFilesFromEvent from '../../helpers/files/getFilesFromEvent';
import apiManagerProxy from '../mtproto/mtprotoworker';
import appRuntimeManager from './appRuntimeManager';
import paymentsWrapCurrencyAmount from '../../helpers/paymentsWrapCurrencyAmount';
import findUpClassName from '../../helpers/dom/findUpClassName';
import {CLICK_EVENT_NAME} from '../../helpers/dom/clickEvent';
import PopupPayment from '../../components/popups/payment';
import wrapPeerTitle from '../../components/wrappers/peerTitle';
import NBSP from '../../helpers/string/nbsp';
import {makeMediaSize, MediaSize} from '../../helpers/mediaSize';
import {MiddleEllipsisElement} from '../../components/middleEllipsis';
import addAnchorListener from '../../helpers/addAnchorListener';
import parseUriParams from '../../helpers/string/parseUriParams';
import getMessageThreadId from './utils/messages/getMessageThreadId';
import findUpTag from '../../helpers/dom/findUpTag';
import {MTAppConfig} from '../mtproto/appConfig';
import PopupForward from '../../components/popups/forward';
import AppBackgroundTab from '../../components/sidebarLeft/tabs/background';
import partition from '../../helpers/array/partition';
import indexOfAndSplice from '../../helpers/array/indexOfAndSplice';
import liteMode, {LiteModeKey} from '../../helpers/liteMode';
import RLottiePlayer from '../rlottie/rlottiePlayer';
import PopupGiftPremium from '../../components/popups/giftPremium';

export type ChatSavedPosition = {
  mids: number[],
  top: number
};

export type ChatSetPeerOptions = {
  peerId: PeerId,
  lastMsgId?: number,
  threadId?: number,
  startParam?: string,
  stack?: number,
  commentId?: number,
  type?: ChatType,
  mediaTimestamp?: number
};

export type ChatSetInnerPeerOptions = Modify<ChatSetPeerOptions, {
  peerId: PeerId,
  type?: ChatType
}>;

export enum APP_TABS {
  CHATLIST,
  CHAT,
  PROFILE
}

export class AppImManager extends EventListenerBase<{
  chat_changing: (details: {from: Chat, to: Chat}) => void,
  peer_changed: (chat: Chat) => void,
  peer_changing: (chat: Chat) => void,
  tab_changing: (tabId: number) => void
}> {
  public columnEl = document.getElementById('column-center') as HTMLDivElement;
  public chatsContainer: HTMLElement;

  public offline = false;
  public updateStatusInterval = 0;

  public log: ReturnType<typeof logger>;

  public setPeerPromise: Promise<void> = null;

  private tabId: APP_TABS;

  public chats: Chat[] = [];
  private prevTab: HTMLElement;
  private chatsSelectTabDebounced: () => void;

  public markupTooltip: MarkupTooltip;
  private backgroundPromises: {[slug: string]: Promise<string>};

  private topbarCall: TopbarCall;
  public emojiAnimationContainer: HTMLDivElement;

  private lastBackgroundUrl: string;

  public managers: AppManagers;

  public cacheStorage = new CacheStorageController('cachedFiles');
  public customEmojiSize: MediaSize;

  get myId() {
    return rootScope.myId;
  }

  get chat(): Chat {
    return this.chats[this.chats.length - 1];
  }

  public construct(managers: AppManagers) {
    this.managers = managers;

    const {
      apiUpdatesManager
    } = managers;
    apiUpdatesManager.attach(I18n.lastRequestedLangCode);

    appMediaPlaybackController.construct(managers);
    uiNotificationsManager.construct(managers);
    uiNotificationsManager.start();

    this.log = logger('IM', LogTypes.Log | LogTypes.Warn | LogTypes.Debug | LogTypes.Error);

    this.backgroundPromises = {};
    STATE_INIT.settings.themes.forEach((theme) => {
      const themeSettings = theme.settings;
      if(!themeSettings) {
        return;
      }

      const {wallpaper} = themeSettings;
      const slug = (wallpaper as WallPaper.wallPaper).slug;
      if(!slug) {
        return;
      }

      const url = 'assets/img/' + slug + '.svg' + (IS_FIREFOX ? '?1' : '');
      this.backgroundPromises[slug] = Promise.resolve(url);
    });

    this.selectTab(APP_TABS.CHATLIST);

    idleController.addEventListener('change', (idle) => {
      this.offline = idle;
      this.updateStatus();
      if(idle) {
        clearInterval(this.updateStatusInterval);
      } else {
        this.updateStatusInterval = window.setInterval(() => this.updateStatus(), 50e3);
      }
    });

    this.chatsContainer = document.createElement('div');
    this.chatsContainer.classList.add('chats-container', 'tabs-container');
    this.chatsContainer.dataset.animation = 'navigation';

    this.emojiAnimationContainer = document.createElement('div');
    this.emojiAnimationContainer.classList.add('emoji-animation-container');
    this.appendEmojiAnimationContainer(mediaSizes.activeScreen);

    this.columnEl.append(this.chatsContainer);

    this.createNewChat();
    this.chatsSelectTab(this.chat.container);

    appNavigationController.onHashChange = this.onHashChange;
    // window.addEventListener('hashchange', this.onHashChange);

    this.setSettings();
    rootScope.addEventListener('settings_updated', this.setSettings);

    const onPremiumToggle = (isPremium: boolean) => {
      document.body.classList.toggle('is-premium', isPremium);
    };
    rootScope.addEventListener('premium_toggle', onPremiumToggle);
    onPremiumToggle(rootScope.premium);
    this.managers.rootScope.getPremium().then(onPremiumToggle);

    useHeavyAnimationCheck(() => {
      animationIntersector.setOnlyOnePlayableGroup('lock');
      animationIntersector.checkAnimations2(true);
    }, () => {
      animationIntersector.setOnlyOnePlayableGroup();
      animationIntersector.checkAnimations2(false);
    });

    themeController.AppBackgroundTab = AppBackgroundTab;

    if(IS_FIREFOX && apiManagerProxy.oldVersion && compareVersion(apiManagerProxy.oldVersion, '1.4.3') === -1) {
      this.deleteFilesIterative((response) => {
        return response.headers.get('Content-Type') === 'image/svg+xml';
      }).then(() => {
        this.applyCurrentTheme();
      });
    } else {
      this.applyCurrentTheme();
    }

    // * fix simultaneous opened both sidebars, can happen when floating sidebar is opened with left sidebar
    mediaSizes.addEventListener('changeScreen', (from, to) => {
      if(document.body.classList.contains(LEFT_COLUMN_ACTIVE_CLASSNAME) &&
        document.body.classList.contains(RIGHT_COLUMN_ACTIVE_CLASSNAME)) {
        appSidebarRight.toggleSidebar(false);
      }

      this.appendEmojiAnimationContainer(to);
    });

    mediaSizes.addEventListener('resize', () => {
      // const perf = performance.now();
      const rect = this.chatsContainer.getBoundingClientRect();
      ChatBackgroundPatternRenderer.resizeInstances(rect.width, rect.height).then(() => {
        // this.log.warn('resize bg time:', performance.now() - perf);
        // for(const chat of this.chats) {
        //   if(chat.renderDarkPattern) {
        //     chat.renderDarkPattern();
        //   }
        // }
      });
    });

    this.addEventListener('peer_changing', (chat) => {
      this.saveChatPosition(chat);
    });

    rootScope.addEventListener('theme_change', () => {
      this.applyCurrentTheme();
    });

    rootScope.addEventListener('choosing_sticker', (choosing) => {
      this.setChoosingStickerTyping(!choosing);
    });

    rootScope.addEventListener('peer_title_edit', ({peerId, threadId}) => {
      if(this.chat?.peerId === peerId && !threadId && this.tabId !== undefined) {
        this.overrideHash(peerId);
      }
    });

    rootScope.addEventListener('peer_typings', ({peerId, typings}) => {
      const chat = this.chat;
      if(
        !chat ||
        chat.peerId !== peerId ||
        overlayCounter.isOverlayActive || (
          mediaSizes.activeScreen === ScreenSize.mobile &&
          this.tabId !== APP_TABS.CHAT
        )
      ) {
        return;
      }

      const typing = typings.find((typing) => typing.action._ === 'sendMessageEmojiInteraction');
      if(typing?.action?._ === 'sendMessageEmojiInteraction') {
        const action = typing.action;
        const bubble = chat.bubbles.bubbles[generateMessageId(typing.action.msg_id)];
        if(bubble && bubble.classList.contains('emoji-big') && getVisibleRect(bubble, chat.bubbles.scrollable.container)) {
          const stickerWrapper: HTMLElement = bubble.querySelector('.media-sticker-wrapper:not(.bubble-hover-reaction-sticker):not(.reaction-sticker)');

          const data: SendMessageEmojiInteractionData = JSON.parse(action.interaction.data);
          data.a.forEach((a) => {
            setTimeout(() => {
              simulateClickEvent(stickerWrapper);
            }, a.t * 1000);
          });

          this.managers.appMessagesManager.setTyping(peerId, {
            _: 'sendMessageEmojiInteractionSeen',
            emoticon: action.emoticon
          });
        }
      }
    });

    const onInstanceDeactivated = (reason: InstanceDeactivateReason) => {
      const isUpdated = reason === 'version';
      const popup = PopupElement.createPopup(PopupElement, 'popup-instance-deactivated', {overlayClosable: true});
      const c = document.createElement('div');
      c.classList.add('instance-deactivated-container');
      (popup as any).container.replaceWith(c);

      const header = document.createElement('div');
      header.classList.add('header');
      header.append(i18n(isUpdated ? 'Deactivated.Version.Title' : 'Deactivated.Title'));

      const subtitle = document.createElement('div');
      subtitle.classList.add('subtitle');
      subtitle.append(i18n(isUpdated ? 'Deactivated.Version.Subtitle' : 'Deactivated.Subtitle'));

      c.append(header, subtitle);

      document.body.classList.add('deactivated');

      const onClose = isUpdated ? () => {
        appRuntimeManager.reload();
      } : () => {
        document.body.classList.add('deactivated-backwards');

        singleInstance.activateInstance();

        setTimeout(() => {
          document.body.classList.remove('deactivated', 'deactivated-backwards');
        }, 333);
      };

      popup.addEventListener('close', onClose);
      popup.show();
    };

    singleInstance.addEventListener('deactivated', onInstanceDeactivated);
    if(singleInstance.deactivatedReason) {
      onInstanceDeactivated(singleInstance.deactivatedReason);
    }

    // remove scroll listener when setting chat to tray
    this.addEventListener('chat_changing', ({to}) => {
      this.toggleChatGradientAnimation(to);
    });

    rootScope.addEventListener('service_notification', (update) => {
      confirmationPopup({
        button: {langKey: 'OK', isCancel: true},
        description: wrapRichText(update.message)
      });
    });

    rootScope.addEventListener('payment_sent', async({peerId, mid, receiptMessage}) => {
      const message = await this.managers.appMessagesManager.getMessageByPeer(peerId, mid);
      if(!message) {
        return;
      }

      const action = receiptMessage.action as MessageAction.messageActionPaymentSent;
      toastNew({
        langPackKey: 'PaymentInfoHint',
        langPackArguments: [
          paymentsWrapCurrencyAmount(action.total_amount, action.currency),
          wrapEmojiText(((message as Message.message).media as MessageMedia.messageMediaInvoice).title)
        ]
      });
    });

    (window as any).onSpoilerClick = (e: MouseEvent) => {
      const spoiler = findUpClassName(e.target, 'spoiler');
      const parentElement = findUpClassName(spoiler, 'spoilers-container') || spoiler.parentElement;

      const className = 'is-spoiler-visible';
      const isVisible = parentElement.classList.contains(className);
      if(!isVisible) {
        cancelEvent(e);

        if(CLICK_EVENT_NAME !== 'click') {
          window.addEventListener('click', cancelEvent, {capture: true, once: true});
        }
      }

      const duration = 400 / 2;
      const showDuration = 5000;
      const useRafs = !isVisible ? 2 : 0;
      if(useRafs) {
        parentElement.classList.add('will-change');
      }

      const spoilerTimeout = parentElement.dataset.spoilerTimeout;
      if(spoilerTimeout !== null) {
        clearTimeout(+spoilerTimeout);
        delete parentElement.dataset.spoilerTimeout;
      }

      SetTransition({
        element: parentElement,
        className,
        forwards: true,
        duration,
        onTransitionEnd: () => {
          parentElement.dataset.spoilerTimeout = '' + window.setTimeout(() => {
            SetTransition({
              element: parentElement,
              className,
              forwards: false,
              duration,
              onTransitionEnd: () => {
                parentElement.classList.remove('will-change');
                delete parentElement.dataset.spoilerTimeout;
              }
            });
          }, showDuration);
        },
        useRafs
      });
    };

    document.addEventListener('mousemove', (e) => {
      const mediaStickerWrapper = findUpClassName(e.target, 'media-sticker-wrapper');
      if(!mediaStickerWrapper ||
        mediaStickerWrapper.classList.contains('custom-emoji') ||
        findUpClassName(e.target, 'emoji-big')) {
        return;
      }

      const animations = animationIntersector.getAnimations(mediaStickerWrapper);
      animations?.forEach((animationItem) => {
        const {liteModeKey, animation} = animationItem;
        if(!liteModeKey || !animation?.paused || liteMode.isAvailable(liteModeKey)) {
          return;
        }

        if(animation instanceof RLottiePlayer) {
          animation.playOrRestart();
        } else {
          animation.play();
        }
      });
    });

    rootScope.addEventListener('sticker_updated', ({type, faved}) => {
      if(type === 'faved') {
        toastNew({
          langPackKey: faved ? 'AddedToFavorites' : 'RemovedFromFavorites'
        });
      } else if(!faved) {
        toastNew({
          langPackKey: 'RemovedFromRecent'
        });
      }
    });

    apiManagerProxy.addEventListener('notificationBuild', async(options) => {
      const isForum = await this.managers.appPeersManager.isForum(options.message.peerId);
      const threadId = getMessageThreadId(options.message, isForum);
      if(this.chat.peerId === options.message.peerId && this.chat.threadId === threadId && !idleController.isIdle) {
        return;
      }

      uiNotificationsManager.buildNotification(options);
    });

    this.addEventListener('peer_changed', async({peerId}) => {
      document.body.classList.toggle('has-chat', !!peerId);

      this.emojiAnimationContainer.textContent = '';

      this.overrideHash(peerId);

      apiManagerProxy.updateTabState('chatPeerIds', this.chats.map((chat) => chat.peerId).filter(Boolean));
    });

    // stateStorage.get('chatPositions').then((c) => {
    stateStorage.setToCache('chatPositions', /* c ||  */{});
    // });

    if(IS_CALL_SUPPORTED || IS_GROUP_CALL_SUPPORTED) {
      this.topbarCall = new TopbarCall(managers);
    }

    if(IS_CALL_SUPPORTED) {
      callsController.addEventListener('instance', ({instance/* , hasCurrent */}) => {
        // if(hasCurrent) {
        // return;
        // }

        const popup = PopupElement.createPopup(PopupCall, instance);

        instance.addEventListener('acceptCallOverride', () => {
          return this.discardCurrentCall(instance.interlocutorUserId.toPeerId(), undefined, instance)
          .then(() => {
            callsController.dispatchEvent('accepting', instance);
            return true;
          })
          .catch(() => false);
        });

        popup.addEventListener('close', () => {
          const currentCall = callsController.currentCall;
          if(currentCall && currentCall !== instance && !instance.wasTryingToJoin) {
            instance.hangUp('phoneCallDiscardReasonBusy');
          }
        }, {once: true});

        popup.show();
      });

      callsController.addEventListener('incompatible', async(userId) => {
        toastNew({
          langPackKey: 'VoipPeerIncompatible',
          langPackArguments: [
            await wrapPeerTitle({peerId: userId.toPeerId()})
          ]
        });
      });
    }

    // ! do not remove this line
    // ! instance can be deactivated before the UI starts, because it waits in background for RAF that is delayed
    singleInstance.activateInstance();

    const setAuthorized = () => {
      telegramMeWebManager.setAuthorized(true);
    };

    setInterval(setAuthorized, ONE_DAY);
    setAuthorized();

    addAnchorListener<{}>({
      name: 'showMaskedAlert',
      callback: (params, element) => {
        const href = element.href;

        const a = element.cloneNode(true) as HTMLAnchorElement;
        a.className = 'anchor-url';
        a.innerText = href;
        a.removeAttribute('onclick');

        PopupElement.createPopup(PopupPeer, 'popup-masked-url', {
          titleLangKey: 'OpenUrlTitle',
          descriptionLangKey: 'OpenUrlAlert2',
          descriptionLangArgs: [a],
          buttons: [{
            langKey: 'Open',
            callback: () => {
              a.click();
            }
          }]
        }).show();
      }
    });

    addAnchorListener<{uriParams: {command: string, bot: string}}>({
      name: 'execBotCommand',
      callback: ({uriParams}) => {
        const {command, bot} = uriParams;

        /* const promise = bot ? this.openUsername(bot).then(() => this.chat.peerId) : Promise.resolve(this.chat.peerId);
        promise.then((peerId) => {
          this.managers.appMessagesManager.sendText(peerId, '/' + command);
        }); */

        this.managers.appMessagesManager.sendText(this.chat.peerId, '/' + command + (bot ? '@' + bot : ''));

        // console.log(command, bot);
      }
    });

    addAnchorListener<{uriParams: {hashtag: string}}>({
      name: 'searchByHashtag',
      callback: ({uriParams}) => {
        const {hashtag} = uriParams;
        if(!hashtag) {
          return;
        }

        this.chat.initSearch('#' + hashtag + ' ');
      }
    });

    addAnchorListener<{}>({
      name: 'setMediaTimestamp',
      callback: (_, element) => {
        const timestamp = +element.dataset.timestamp;
        const bubble = findUpClassName(element, 'bubble');
        if(bubble) {
          this.chat.bubbles.playMediaWithTimestamp(element, timestamp);
          return;
        }

        if(findUpClassName(element, 'media-viewer-caption')) {
          const appMediaViewer = (window as any).appMediaViewer;
          appMediaViewer.setMediaTimestamp(timestamp);
        }
      }
    });

    ([
      ['addstickers', INTERNAL_LINK_TYPE.STICKER_SET],
      ['addemoji', INTERNAL_LINK_TYPE.EMOJI_SET]
    ] as [
      'addstickers' | 'addemoji',
      INTERNAL_LINK_TYPE.STICKER_SET | INTERNAL_LINK_TYPE.EMOJI_SET
    ][]).forEach(([name, type]) => {
      addAnchorListener<{pathnameParams: [typeof name, string]}>({
        name,
        callback: ({pathnameParams}) => {
          if(!pathnameParams[1]) {
            return;
          }

          const link: InternalLink = {
            _: type,
            set: pathnameParams[1]
          };

          this.processInternalLink(link);
        }
      });

      addAnchorListener<{
        uriParams: {
          set: string
        }
      }>({
        name,
        protocol: 'tg',
        callback: ({uriParams}) => {
          const link = this.makeLink(type, uriParams);
          this.processInternalLink(link);
        }
      });
    });

    // * t.me/invoice/asdasdad
    // * t.me/$asdasdad
    addAnchorListener<{pathnameParams: ['invoice', string] | string}>({
      name: 'invoice',
      callback: ({pathnameParams}) => {
        const link: InternalLink = {
          _: INTERNAL_LINK_TYPE.INVOICE,
          slug: pathnameParams.length > 1 ? pathnameParams[1] : pathnameParams[0].slice(1)
        };

        this.processInternalLink(link);
      }
    });

    // Support old t.me/joinchat/asd and new t.me/+asd
    addAnchorListener<{pathnameParams: ['joinchat', string]}>({
      name: 'joinchat',
      callback: ({pathnameParams}) => {
        const link: InternalLink = {
          _: INTERNAL_LINK_TYPE.JOIN_CHAT,
          invite: pathnameParams[1] || decodeURIComponent(pathnameParams[0]).slice(1)
        };

        this.processInternalLink(link);
      }
    });

    if(IS_GROUP_CALL_SUPPORTED) {
      addAnchorListener<{
        uriParams: Omit<InternalLink.InternalLinkVoiceChat, '_'>
      }>({
        name: 'voicechat',
        protocol: 'tg',
        callback: ({uriParams}) => {
          const link = this.makeLink(INTERNAL_LINK_TYPE.VOICE_CHAT, uriParams);
          this.processInternalLink(link);
        }
      });
    }

    addAnchorListener<{
    //   pathnameParams: ['c', string, string],
    //   uriParams: {thread?: number}
    // } | {
    //   pathnameParams: [string, string?],
    //   uriParams: {comment?: number}
      pathnameParams: ['c', string, string] | [string, string?],
      uriParams: {thread?: string, comment?: string, t?: string} | {comment?: string, start?: string, t?: string}
    }>({
      name: 'im',
      callback: async({pathnameParams, uriParams}, element) => {
        let link: InternalLink;
        if(PHONE_NUMBER_REG_EXP.test(pathnameParams[0])) {
          link = {
            _: INTERNAL_LINK_TYPE.USER_PHONE_NUMBER,
            phone: pathnameParams[0].slice(1)
          };
        } else if(pathnameParams[0] === 'c') {
          pathnameParams.shift();
          const thread = 'thread' in uriParams ? uriParams.thread : pathnameParams[2] && pathnameParams[1];
          link = {
            _: INTERNAL_LINK_TYPE.PRIVATE_POST,
            channel: pathnameParams[0],
            post: pathnameParams[2] || pathnameParams[1],
            thread,
            comment: uriParams.comment,
            stack: this.getStackFromElement(element),
            t: uriParams.t
          };
        } else {
          const thread = 'thread' in uriParams ? uriParams.thread : pathnameParams[2] && pathnameParams[1];
          link = {
            _: INTERNAL_LINK_TYPE.MESSAGE,
            domain: pathnameParams[0],
            post: pathnameParams[2] || pathnameParams[1],
            thread,
            comment: uriParams.comment,
            start: 'start' in uriParams ? uriParams.start : undefined,
            stack: this.getStackFromElement(element),
            t: uriParams.t
          };
        }

        this.processInternalLink(link);
      }
    });

    addAnchorListener<{
      uriParams: {
        domain: string,

        // telegrampassport
        scope?: string,
        nonce?: string,
        payload?: string,
        bot_id?: string,
        public_key?: string,
        callback_url?: string,

        // regular
        start?: string,
        startgroup?: string,
        game?: string,
        voicechat?: string,
        post?: string,
        thread?: string,
        comment?: string,
        phone?: string,
        t?: string
      }
    }>({
      name: 'resolve',
      protocol: 'tg',
      callback: ({uriParams}, element) => {
        let link: InternalLink;
        if(uriParams.phone) {
          link = this.makeLink(INTERNAL_LINK_TYPE.USER_PHONE_NUMBER, uriParams as Required<typeof uriParams>);
        } else if(uriParams.domain === 'telegrampassport') {

        } else {
          link = this.makeLink(INTERNAL_LINK_TYPE.MESSAGE, {
            ...uriParams,
            stack: this.getStackFromElement(element)
          });
        }

        this.processInternalLink(link);
      }
    });

    addAnchorListener<{
      uriParams: {
        channel: string,
        post: string,
        thread?: string,
        comment?: string
      }
    }>({
      name: 'privatepost',
      protocol: 'tg',
      callback: ({uriParams}) => {
        const link = this.makeLink(INTERNAL_LINK_TYPE.PRIVATE_POST, uriParams);
        this.processInternalLink(link);
      }
    });

    addAnchorListener<{
      uriParams: {
        slug: string
      }
    }>({
      name: 'invoice',
      protocol: 'tg',
      callback: ({uriParams}) => {
        const link = this.makeLink(INTERNAL_LINK_TYPE.INVOICE, uriParams);
        this.processInternalLink(link);
      }
    });

    ['joinchat' as const, 'join' as const].forEach((name) => {
      addAnchorListener<{
        uriParams: {
          invite: string
        }
      }>({
        name,
        protocol: 'tg',
        callback: ({uriParams}) => {
          const link = this.makeLink(INTERNAL_LINK_TYPE.JOIN_CHAT, uriParams);
          this.processInternalLink(link);
        }
      });
    });

    this.onHashChange(true);
    this.attachKeydownListener();
    this.handleAutologinDomains();
    this.checkForShare();
  }

  private checkForShare() {
    const share = apiManagerProxy.share;
    if(share) {
      apiManagerProxy.share = undefined;
      PopupElement.createPopup(PopupForward, undefined, async(peerId) => {
        await this.setPeer({peerId});
        if(share.files?.length) {
          const foundMedia = share.files.some((file) => MEDIA_MIME_TYPES_SUPPORTED.has(file.type));
          PopupElement.createPopup(PopupNewMedia, this.chat, share.files, foundMedia ? 'media' : 'document');
        } else {
          this.managers.appMessagesManager.sendText(peerId, share.text);
        }
      });
    }
  }

  public handleUrlAuth(options: {
    peerId?: PeerId,
    mid?: number,
    buttonId?: number,
    url: string
  }) {
    const {peerId, mid, buttonId, url} = options;

    const openWindow = (url: string) => {
      window.open(url, '_blank');
    };

    const onUrlAuthResultAccepted = (urlAuthResult: UrlAuthResult.urlAuthResultAccepted) => {
      openWindow(urlAuthResult.url);
    };

    const onUrlAuthResult = async(urlAuthResult: UrlAuthResult): Promise<void> => {
      if(urlAuthResult._ === 'urlAuthResultRequest') {
        const b = document.createElement('b');
        b.append(urlAuthResult.domain);
        const peerTitle = await wrapPeerTitle({peerId: rootScope.myId});
        const botPeerTitle = await wrapPeerTitle({peerId: urlAuthResult.bot.id.toPeerId()});

        const logInCheckbox: PopupPeerCheckboxOptions = {
          text: 'OpenUrlOption1',
          textArgs: [b.cloneNode(true), peerTitle],
          checked: true
        };

        const allowMessagesCheckbox: PopupPeerCheckboxOptions = urlAuthResult.pFlags.request_write_access ? {
          text: 'OpenUrlOption2',
          textArgs: [botPeerTitle],
          checked: true
        } : undefined;

        const checkboxes: PopupPeerCheckboxOptions[] = [
          logInCheckbox,
          allowMessagesCheckbox
        ];

        const confirmationPromise = confirmationPopup({
          titleLangKey: 'OpenUrlTitle',
          button: {
            langKey: 'Open'
          },
          descriptionLangKey: 'OpenUrlAlert2',
          descriptionLangArgs: [b],
          checkboxes: checkboxes.filter(Boolean)
        });

        if(allowMessagesCheckbox) {
          logInCheckbox.checkboxField.input.addEventListener('change', () => {
            const disabled = !logInCheckbox.checkboxField.checked;
            allowMessagesCheckbox.checkboxField.toggleDisability(disabled);

            if(disabled) {
              allowMessagesCheckbox.checkboxField.checked = false;
            }
          });
        }

        const [logInChecked, allowMessagesChecked] = await confirmationPromise;

        if(!logInChecked) {
          openWindow(url);
          return;
        }

        const result = await this.managers.appSeamlessLoginManager.acceptUrlAuth(
          url,
          peerId,
          mid,
          buttonId,
          allowMessagesChecked
        );

        return onUrlAuthResult(result);
      } else if(urlAuthResult._ === 'urlAuthResultAccepted') {
        onUrlAuthResultAccepted(urlAuthResult);
      } else {
        openWindow(url);
      }
    };

    return this.managers.appSeamlessLoginManager.requestUrlAuth(
      url,
      peerId,
      mid,
      buttonId
    ).then((urlAuthResult) => {
      onUrlAuthResult(urlAuthResult);
    });
  }

  private handleAutologinDomains() {
    let appConfig: MTAppConfig;
    rootScope.addEventListener('app_config', (_appConfig) => {
      appConfig = _appConfig;
    });

    const onAnchorClick = (element: HTMLAnchorElement) => {
      const url = new URL(element.href);
      if(appConfig.url_auth_domains.includes(url.hostname)) {
        this.handleUrlAuth({url: element.href});
        cancelEvent();
        return;
      }

      if(!appConfig.autologin_token || !appConfig.autologin_domains) {
        return;
      }

      const originalUrl = element.dataset.originalUrl ??= element.href;
      if(appConfig.autologin_domains.includes(url.hostname)) {
        url.searchParams.set('autologin_token', appConfig.autologin_token);
        element.href = url.toString();

        setTimeout(() => {
          element.href = originalUrl;
          delete element.dataset.originalUrl;
        }, 0);
      }
    };

    document.addEventListener('click', (e) => {
      const anchor = findUpTag(e.target as HTMLElement, 'A') as HTMLAnchorElement;
      if(anchor?.href) {
        onAnchorClick(anchor);
      }
    });

    // addAnchorListener({
    //   name: 'handleUrlClick',
    //   callback: (_, element) => {
    //     onAnchorClick(element);
    //   },
    //   noCancelEvent: true,
    //   noPathnameParams: true,
    //   noUriParams: true
    // });
  }

  private getStackFromElement(element: HTMLElement) {
    const possibleBubble = findUpClassName(element, 'bubble');
    return possibleBubble ? +possibleBubble.dataset.mid : undefined;
  }

  private deleteFilesIterative(callback: (response: Response) => boolean) {
    return this.cacheStorage.timeoutOperation((cache) => {
      const perf = performance.now();
      return cache.keys().then((requests) => {
        const promises = requests.map((request) => {
          return cache.match(request).then((response) => {
            return callback(response);
          });
        });

        return Promise.all(promises).then((values) => {
          values.map((isBad, idx) => {
            if(!isBad) {
              return;
            }

            const request = requests[idx];
            return cache.delete(request);
          });

          return Promise.all(values.filter(Boolean));
        });
      }).then(() => {
        this.log('deleted files', performance.now() - perf);
      });
    });
  }

  private toggleChatGradientAnimation(activatingChat: Chat) {
    this.chats.forEach((chat) => {
      if(chat.gradientRenderer) {
        chat.gradientRenderer.scrollAnimate(liteMode.isAvailable('animations') && chat === activatingChat);
      }
    });
  }

  private appendEmojiAnimationContainer(screen: ScreenSize) {
    const appendTo = screen === ScreenSize.mobile ? this.columnEl : document.body;
    if(this.emojiAnimationContainer.parentElement !== appendTo) {
      appendTo.append(this.emojiAnimationContainer)
    }
  }

  private attachKeydownListener() {
    const IGNORE_KEYS = new Set(['PageUp', 'PageDown', 'Meta', 'Control']);
    const onKeyDown = (e: KeyboardEvent) => {
      const key = e.key;
      const isSelectionCollapsed = document.getSelection().isCollapsed;
      if(overlayCounter.isOverlayActive || IGNORE_KEYS.has(key)) return;

      const target = e.target as HTMLElement;

      const isTargetAnInput = (target.tagName === 'INPUT' && !['checkbox', 'radio'].includes((target as HTMLInputElement).type)) || target.isContentEditable;

      // if(target.tagName === 'INPUT') return;

      // this.log('onkeydown', e, document.activeElement);

      const chat = this.chat;

      if((key.startsWith('Arrow') || (e.shiftKey && key === 'Shift')) && !isSelectionCollapsed) {
        return;
      } else if(e.code === 'KeyC' && (e.ctrlKey || e.metaKey) && !isTargetAnInput) {
        return;
      } else if(e.altKey && (key === 'ArrowUp' || key === 'ArrowDown')) {
        cancelEvent(e);
        this.managers.dialogsStorage.getNextDialog(this.chat.peerId, key === 'ArrowDown', appDialogsManager.filterId).then((dialog) => {
          if(dialog) {
            this.setPeer({peerId: dialog.peerId});
          }
        });
      } else if(key === 'ArrowUp' && this.chat.type !== 'scheduled') {
        if(!chat.input.editMsgId && chat.input.isInputEmpty()) {
          this.managers.appMessagesManager.getFirstMessageToEdit(chat.peerId, chat.threadId).then((message) => {
            if(message) {
              chat.input.initMessageEditing(message.mid);
              cancelEvent(e); // * prevent from scrolling
            }
          });
        } else {
          return;
        }
      } else if(key === 'ArrowDown') {
        return;
      }

      if(
        chat?.input?.messageInput &&
        target !== chat.input.messageInput &&
        !isTargetAnInput &&
        !IS_TOUCH_SUPPORTED &&
        (!mediaSizes.isMobile || this.tabId === APP_TABS.CHAT) &&
        !chat.selection.isSelecting &&
        !chat.input.recording &&
        chat.input.messageInput.isContentEditable
      ) {
        chat.input.messageInput.focus();
        placeCaretAtEnd(chat.input.messageInput);

        // clone and dispatch same event to new input. it is needed for sending message if input was blurred
        const newEvent = new KeyboardEvent(e.type, e);
        chat.input.messageInput.dispatchEvent(newEvent);
      }
    };

    document.body.addEventListener('keydown', onKeyDown);
  }

  private makeLink<T extends INTERNAL_LINK_TYPE>(type: T, uriParams: Omit<InternalLinkTypeMap[T], '_'>) {
    return {
      _: type,
      ...uriParams
    } as any as InternalLinkTypeMap[T];
  }

  public async processInternalLink(link: InternalLink) {
    switch(link?._) {
      case INTERNAL_LINK_TYPE.MESSAGE: {
        const postId = link.post ? generateMessageId(+link.post) : undefined;
        const commentId = link.comment ? generateMessageId(+link.comment) : undefined;
        const threadId = link.thread ? generateMessageId(+link.thread) : undefined;

        this.openUsername({
          userName: link.domain,
          lastMsgId: postId,
          commentId,
          startParam: link.start,
          stack: link.stack,
          threadId,
          mediaTimestamp: link.t && +link.t
        });
        break;
      }

      case INTERNAL_LINK_TYPE.PRIVATE_POST: {
        const chatId = link.channel.toChatId();
        const peerId = chatId.toPeerId(true);

        const chat = await this.managers.appChatsManager.getChat(chatId);
        if(!chat) {
          try {
            await this.managers.appChatsManager.resolveChannel(chatId);
          } catch(err) {
            toastNew({langPackKey: 'LinkNotFound'});
            throw err;
          }
        }

        const postId = generateMessageId(+link.post);
        const threadId = link.thread ? generateMessageId(+link.thread) : undefined;

        this.op({
          peer: chat,
          lastMsgId: postId,
          threadId,
          stack: link.stack,
          mediaTimestamp: link.t && +link.t
        });
        break;
      }

      case INTERNAL_LINK_TYPE.EMOJI_SET:
      case INTERNAL_LINK_TYPE.STICKER_SET: {
        PopupElement.createPopup(PopupStickers, {id: link.set}, link._ === INTERNAL_LINK_TYPE.EMOJI_SET).show();
        break;
      }

      case INTERNAL_LINK_TYPE.JOIN_CHAT: {
        this.managers.appChatsManager.checkChatInvite(link.invite).then((chatInvite) => {
          if((chatInvite as ChatInvite.chatInvitePeek).chat) {
            this.managers.appChatsManager.saveApiChat((chatInvite as ChatInvite.chatInvitePeek).chat, true);
          }

          // console.log(chatInvite);

          if(chatInvite._ === 'chatInviteAlready' ||
            chatInvite._ === 'chatInvitePeek'/*  && chatInvite.expires > tsNow(true) */) {
            this.setInnerPeer({
              peerId: chatInvite.chat.id.toPeerId(true)
            });
            return;
          }

          PopupElement.createPopup(PopupJoinChatInvite, link.invite, chatInvite);
        }, (err) => {
          if(err.type === 'INVITE_HASH_EXPIRED') {
            toast(i18n('InviteExpired'));
          }
        });
        break;
      }

      case INTERNAL_LINK_TYPE.VOICE_CHAT: {
        if(IS_GROUP_CALL_SUPPORTED) {
          this.joinGroupCall(link.chat_id.toPeerId(true), link.id);
        }

        break;
      }

      case INTERNAL_LINK_TYPE.USER_PHONE_NUMBER: {
        this.managers.appUsersManager.resolvePhone(link.phone).then((user) => {
          this.setInnerPeer({
            peerId: user.id.toPeerId(false)
          });
        }).catch((err) => {
          if(err.type === 'PHONE_NOT_OCCUPIED') {
            toastNew({langPackKey: 'Alert.UserDoesntExists'});
          }
        });

        break;
      }

      case INTERNAL_LINK_TYPE.INVOICE: {
        this.managers.appPaymentsManager.getInputInvoiceBySlug(link.slug).then((inputInvoice) => {
          this.managers.appPaymentsManager.getPaymentForm(inputInvoice).then((paymentForm) => {
            // const message: Message.message = {
            //   _: 'message',
            //   date: 0,
            //   id: 0,
            //   peerId: 0,
            //   peer_id: undefined,
            //   message: '',
            //   media: {
            //     _: 'messageMediaInvoice',
            //     currency: paymentForm.invoice.currency,
            //     description: paymentForm.description,

            //   }
            // };
            PopupElement.createPopup(PopupPayment, undefined, inputInvoice, paymentForm);
          });
        });
        break;
      }

      default: {
        this.log.warn('Not supported internal link:', link);
        break;
      }
    }
  }

  public openUrl(url: string) {
    const {url: wrappedUrl, onclick} = wrapUrl(url);
    if(!onclick) {
      return;
    }

    const a = document.createElement('a');
    a.href = wrappedUrl;
    (window as any)[onclick](a);
  }

  private onHashChange = (saveState?: boolean) => {
    try {
      this.onHashChangeUnsafe(saveState);
    } catch(err) {
      this.log.error('hash change error', err);
    }
  };

  private onHashChangeUnsafe = (saveState?: boolean) => {
    const hash = location.hash;
    if(!saveState) {
      appNavigationController.replaceState();
    }

    const splitted = hash.split('?');
    const params = parseUriParams(hash, splitted);
    this.log('hashchange', hash, splitted[0], params);
    if(!hash) {
      return;
    }

    if(params.tgaddr) {
      this.openUrl(params.tgaddr);
      return;
    }

    switch(splitted[0]) {
      default: {
        params.p = splitted[0].slice(1);
      }

      case '#/im': {
        if(!Object.keys(params).length) {
          break;
        }

        const p: string = params.p;
        const postId = params.post !== undefined ? generateMessageId(+params.post) : undefined;

        switch(p[0]) {
          case '@': {
            this.openUsername({
              userName: p,
              lastMsgId: postId
            });
            break;
          }

          default: { // peerId
            this.setInnerPeer({
              peerId: postId ? p.toPeerId(true) : p.toPeerId(),
              lastMsgId: postId
            });
            break;
          }
        }
      }
    }

    // appNavigationController.replaceState();
    // location.hash = '';
  };

  private async op(options: {
    peer: User.user | MTChat
  } & Omit<ChatSetPeerOptions, 'peerId'>) {
    let {peer, commentId, threadId, lastMsgId} = options;
    const isUser = peer._ === 'user';
    const peerId = peer.id.toPeerId(!isUser);

    const isForum = peer._ === 'channel' && peer.pFlags.forum;
    // open forum tab
    if(!commentId && !threadId && !lastMsgId && isForum) {
      appDialogsManager.toggleForumTabByPeerId(peerId, true);
      return;
    }

    // handle t.me/username/thread or t.me/username/messageId
    if(isForum && lastMsgId && !threadId) {
      const message = await this.managers.appMessagesManager.reloadMessages(peerId, lastMsgId);
      if(message) {
        threadId = options.threadId = getMessageThreadId(message, isForum);
      } else {
        threadId = options.threadId = lastMsgId;
        lastMsgId = options.lastMsgId = undefined;
      }
    }

    if(threadId) {
      return this.openThread({
        ...(options as any as Parameters<AppImManager['openThread']>[0]),
        peerId
      });
    } else if(commentId) {
      return this.openComment({
        peerId,
        msgId: lastMsgId,
        commentId
      });
    }

    return this.setInnerPeer({
      ...options,
      peerId
    });
  }

  public openPremiumBot() {
    return this.managers.apiManager.getAppConfig().then((appConfig) => {
      return this.openUsername({userName: appConfig.premium_bot_username});
    });
  }

  public openUsername(options: {
    userName: string
  } & Omit<ChatSetPeerOptions, 'peerId'>) {
    const {userName} = options;
    return this.managers.appUsersManager.resolveUsername(userName).then((peer) => {
      return this.op({
        peer,
        ...options
      });
    }, (err: ApiError) => {
      if(err.type === 'USERNAME_NOT_OCCUPIED') {
        toastNew({langPackKey: 'NoUsernameFound'});
      } else if(err.type === 'USERNAME_INVALID') {
        toastNew({langPackKey: 'Alert.UserDoesntExists'});
      }
    });
  }

  /**
   * Opens thread when peerId of discussion group is known
   */
  public async openThread(options: {
    peerId: PeerId,
    lastMsgId: number,
    threadId: number,
    stack?: number
  }) {
    if(await this.managers.appChatsManager.isForum(options.peerId.toChatId())) {
      await this.managers.dialogsStorage.getForumTopicOrReload(options.peerId, options.threadId);
      return this.setInnerPeer(options);
    }

    return this.managers.appMessagesManager.reloadMessages(options.peerId, options.threadId).then((message) => {
      if(!message) {
        options.lastMsgId = undefined;
      } else {
        this.managers.appMessagesManager.generateThreadServiceStartMessage(message);
      }

      return this.setInnerPeer({
        ...options,
        type: 'discussion'
      });
    });
  }

  /**
   * Opens comment directly from original channel
   */
  public openComment(options: {
    peerId: PeerId,
    msgId: number,
    commentId: number
  }) {
    return this.managers.appMessagesManager.getDiscussionMessage(options.peerId, options.msgId).then((message) => {
      return this.openThread({
        peerId: message.peerId,
        lastMsgId: options.commentId,
        threadId: message.mid
      });
    });
  }

  public async callUser(userId: UserId, type: CallType) {
    const call = callsController.getCallByUserId(userId);
    if(call) {
      return;
    }

    const userFull = await this.managers.appProfileManager.getProfile(userId);
    if(userFull.pFlags.phone_calls_private) {
      wrapPeerTitle({peerId: userId.toPeerId()}).then((element) => {
        return confirmationPopup({
          descriptionLangKey: 'Call.PrivacyErrorMessage',
          descriptionLangArgs: [element],
          button: {
            langKey: 'OK',
            isCancel: true
          }
        });
      });

      return;
    }

    await this.discardCurrentCall(userId.toPeerId());

    callsController.startCallInternal(userId, type === 'video');
  }

  private discardCurrentCall(toPeerId: PeerId, ignoreGroupCall?: GroupCallInstance, ignoreCall?: CallInstance) {
    if(groupCallsController.groupCall && groupCallsController.groupCall !== ignoreGroupCall) return this.discardGroupCallConfirmation(toPeerId);
    else if(callsController.currentCall && callsController.currentCall !== ignoreCall) return this.discardCallConfirmation(toPeerId);
    else return Promise.resolve();
  }

  private async discardCallConfirmation(toPeerId: PeerId) {
    const currentCall = callsController.currentCall;
    if(currentCall) {
      await Promise.all([
        wrapPeerTitle({peerId: currentCall.interlocutorUserId.toPeerId(false)}),
        wrapPeerTitle({peerId: toPeerId})
      ]).then(([title1, title2]) => {
        return confirmationPopup({
          titleLangKey: 'Call.Confirm.Discard.Call.Header',
          descriptionLangKey: toPeerId.isUser() ? 'Call.Confirm.Discard.Call.ToCall.Text' : 'Call.Confirm.Discard.Call.ToVoice.Text',
          descriptionLangArgs: [title1, title2],
          button: {
            langKey: 'OK'
          }
        });
      });

      if(!currentCall.isClosing) {
        await currentCall.hangUp('phoneCallDiscardReasonDisconnect');
      }
    }
  }

  private async discardGroupCallConfirmation(toPeerId: PeerId) {
    const currentGroupCall = groupCallsController.groupCall;
    if(currentGroupCall) {
      await Promise.all([
        wrapPeerTitle({peerId: currentGroupCall.chatId.toPeerId(true)}),
        wrapPeerTitle({peerId: toPeerId})
      ]).then(([title1, title2]) => {
        return confirmationPopup({
          titleLangKey: 'Call.Confirm.Discard.Voice.Header',
          descriptionLangKey: toPeerId.isUser() ? 'Call.Confirm.Discard.Voice.ToCall.Text' : 'Call.Confirm.Discard.Voice.ToVoice.Text',
          descriptionLangArgs: [title1, title2],
          button: {
            langKey: 'OK'
          }
        });
      });

      if(groupCallsController.groupCall === currentGroupCall) {
        await currentGroupCall.hangUp();
      }
    }
  }

  public async joinGroupCall(peerId: PeerId, groupCallId?: GroupCallId) {
    const chatId = peerId.toChatId();
    const hasRights = this.managers.appChatsManager.hasRights(chatId, 'manage_call');
    const next = async() => {
      const chatFull = await this.managers.appProfileManager.getChatFull(chatId);
      let call: MyGroupCall;
      if(!chatFull.call) {
        if(!hasRights) {
          return;
        }

        call = await this.managers.appGroupCallsManager.createGroupCall(chatId);
      } else {
        call = chatFull.call;
      }

      groupCallsController.joinGroupCall(chatId, call.id, true, false);
    };

    if(groupCallId) {
      const groupCall = await this.managers.appGroupCallsManager.getGroupCallFull(groupCallId);
      if(groupCall._ === 'groupCallDiscarded') {
        if(!hasRights) {
          toastNew({
            langPackKey: 'VoiceChat.Chat.Ended'
          });

          return;
        }

        await confirmationPopup({
          descriptionLangKey: 'VoiceChat.Chat.StartNew',
          button: {
            langKey: 'VoiceChat.Chat.StartNew.OK'
          }
        });
      }
    }

    // await this.discardCurrentCall(peerId);

    next();
  };

  public setCurrentBackground(broadcastEvent = false): ReturnType<AppImManager['setBackground']> {
    const theme = themeController.getTheme();

    const slug = (theme.settings?.wallpaper as WallPaper.wallPaper)?.slug;
    if(slug) {
      const defaultTheme = STATE_INIT.settings.themes.find((t) => t.name === theme.name);
      // const isDefaultBackground = theme.background.blur === defaultTheme.background.blur &&
      // slug === defaultslug;

      // if(!isDefaultBackground) {
      return this.getBackground(slug).then((url) => {
        return this.setBackground(url, broadcastEvent);
      }, () => { // * if NO_ENTRY_FOUND
        theme.settings = copy(defaultTheme.settings); // * reset background
        return this.setCurrentBackground(true);
      });
      // }
    }

    return this.setBackground('', broadcastEvent);
  }

  private getBackground(slug: string) {
    if(this.backgroundPromises[slug]) return this.backgroundPromises[slug];
    return this.backgroundPromises[slug] = this.cacheStorage.getFile('backgrounds/' + slug).then((blob) => {
      return URL.createObjectURL(blob);
    });
  }

  public setBackground(url: string, broadcastEvent = true): Promise<void> {
    this.lastBackgroundUrl = url;
    const promises = this.chats.map((chat) => chat.setBackground(url));
    return promises[promises.length - 1].then(() => {
      if(broadcastEvent) {
        rootScope.dispatchEvent('background_change');
      }
    });
  }

  public saveChatPosition(chat: Chat) {
    if(!(['chat', 'discussion'] as ChatType[]).includes(chat.type) || !chat.peerId) {
      return;
    }

    // const bubble = chat.bubbles.getBubbleByPoint('top');
    // if(bubble) {
    // const top = bubble.getBoundingClientRect().top;
    const chatBubbles = chat.bubbles;
    const key = chat.peerId + (chat.threadId ? '_' + chat.threadId : '');
    const chatPositions = stateStorage.getFromCache('chatPositions');
    if(!(chatBubbles.scrollable.getDistanceToEnd() <= 16 && chatBubbles.scrollable.loadedAll.bottom) && chatBubbles.getRenderedLength()) {
      chatBubbles.sliceViewport(true);
      const top = chatBubbles.scrollable.scrollTop;

      const position = {
        mids: getObjectKeysAndSort(chatBubbles.bubbles, 'desc').filter((mid) => mid > 0 && !chatBubbles.skippedMids.has(mid)),
        top
      };

      chatPositions[key] = position;

      this.log('saved chat position:', position);
    } else {
      delete chatPositions[key];

      this.log('deleted chat position');
    }

    stateStorage.set({chatPositions}, true);
    // }
  }

  public getChatSavedPosition(chat: Chat): ChatSavedPosition {
    if(!(['chat', 'discussion'] as ChatType[]).includes(chat.type) || !chat.peerId) {
      return;
    }

    const key = chat.peerId + (chat.threadId ? '_' + chat.threadId : '');
    const cache = stateStorage.getFromCache('chatPositions');
    return cache && cache[key];
  }

  public applyCurrentTheme(slug?: string, backgroundUrl?: string, broadcastEvent?: boolean) {
    if(backgroundUrl) {
      this.backgroundPromises[slug] = Promise.resolve(backgroundUrl);
    }

    themeController.setTheme();

    return this.setCurrentBackground(broadcastEvent === undefined ? !!slug : broadcastEvent);
  }

  private setSettings = () => {
    const {messagesTextSize} = rootScope.settings;

    this.customEmojiSize = makeMediaSize(messagesTextSize + 4, messagesTextSize + 4);
    document.documentElement.style.setProperty('--messages-text-size', messagesTextSize + 'px');

    const firstTime = !this.customEmojiSize;
    if(!firstTime) {
      const ellipsisElements = document.querySelectorAll<MiddleEllipsisElement>('middle-ellipsis-element');
      ellipsisElements.forEach((element) => {
        element.disconnectedCallback();
        element.dataset.fontSize = '' + messagesTextSize;
        if(element.title) element.textContent = element.title;
        element.connectedCallback();
      });

      const renderers = document.querySelectorAll<CustomEmojiRendererElement>('.chat custom-emoji-renderer-element');
      renderers.forEach((renderer) => {
        renderer.forceRenderAfterSize = true;
      });
    }

    document.body.classList.toggle('animation-level-0', !liteMode.isAvailable('animations'));
    document.body.classList.toggle('animation-level-1', false);
    document.body.classList.toggle('animation-level-2', liteMode.isAvailable('animations'));

    this.chatsSelectTabDebounced = debounce(() => {
      const topbar = this.chat.topbar;
      topbar.pinnedMessage?.setCorrectIndex(0); // * буду молиться богам, чтобы это ничего не сломало, но это исправляет получение пиннеда после анимации

      this.managers.apiFileManager.setQueueId(this.chat.bubbles.lazyLoadQueue.queueId);
    }, liteMode.isAvailable('animations') ? 250 : 0, false, true);

    const c: LiteModeKey[] = ['stickers_chat', 'stickers_panel'];
    const changedLoop = animationIntersector.setLoop(rootScope.settings.stickers.loop);
    const changedAutoplay = !!c.filter((key) => animationIntersector.setAutoplay(liteMode.isAvailable(key), key)).length;
    if(changedLoop || changedAutoplay) {
      animationIntersector.checkAnimations2(false);
    }

    for(const chat of this.chats) {
      chat.setAutoDownloadMedia();
    }

    I18n.setTimeFormat(rootScope.settings.timeFormat);

    this.toggleChatGradientAnimation(this.chat);
  };

  // * не могу использовать тут TransitionSlider, так как мне нужен отрисованный блок рядом
  // * (или под текущим чатом) чтобы правильно отрендерить чат (напр. scrollTop)
  private chatsSelectTab(tab: HTMLElement, animate?: boolean) {
    if(this.prevTab === tab) {
      return;
    }

    if(animate === false && this.prevTab) { // * will be used for Safari iOS history swipe
      disableTransition([tab, this.prevTab].filter(Boolean));
    }

    if(this.prevTab) {
      this.prevTab.classList.remove('active');
      this.chatsSelectTabDebounced();

      // ! нужно переделать на animation, так как при лаге анимация будет длиться не 250мс
      if(liteMode.isAvailable('animations') && animate !== false) {
        dispatchHeavyAnimationEvent(pause(250 + 150), 250 + 150);
      }

      const prevIdx = whichChild(this.prevTab);
      const idx = whichChild(tab);
      if(idx > prevIdx) {
        appNavigationController.pushItem({
          type: 'chat',
          onPop: (canAnimate) => {
            this.setPeer({}, canAnimate);
            blurActiveElement();
          }
        });
      }
    }

    tab.classList.add('active');
    this.prevTab = tab;
  }

  private init() {
    document.addEventListener('paste', this.onDocumentPaste, true);

    if(!IS_TOUCH_SUPPORTED) {
      this.attachDragAndDropListeners();
    }

    // if(!isTouchSupported) {
    this.markupTooltip = new MarkupTooltip(this);
    this.markupTooltip.handleSelection();
    // }
  }

  private attachDragAndDropListeners() {
    const drops: ChatDragAndDrop[] = [];
    const mediaDrops: ChatDragAndDrop[] = [];
    let mounted = false;
    const toggle = async(e: DragEvent, mount: boolean) => {
      if(mount === mounted) return;

      const _types = e.dataTransfer.types;
      // @ts-ignore
      const isFiles = _types.contains ? _types.contains('Files') : _types.indexOf('Files') >= 0;

      const newMediaPopup = getCurrentNewMediaPopup();
      const types: string[] = await getFilesFromEvent(e, true);
      if(!isFiles || (!(await this.canDrag()) && !newMediaPopup)) { // * skip dragging text case
        counter = 0;
        return;
      }

      const rights = await PopupNewMedia.canSend(this.chat.peerId, true);

      const _dropsContainer = newMediaPopup ? mediaDropsContainer : dropsContainer;
      const _drops = newMediaPopup ? mediaDrops : drops;

      if(mount && !_drops.length) {
        const force = isFiles && !types.length; // * can't get file items not from 'drop' on Safari

        const [foundMedia, foundDocuments] = partition(types, (t) => MEDIA_MIME_TYPES_SUPPORTED.has(t));
        const [foundPhotos, foundVideos] = partition(foundMedia, (t) => IMAGE_MIME_TYPES_SUPPORTED.has(t));

        if(!rights.send_docs) {
          foundDocuments.length = 0;
        } else {
          foundDocuments.push(...foundMedia);
        }

        if(!rights.send_photos) {
          foundPhotos.forEach((mimeType) => indexOfAndSplice(foundMedia, mimeType));
          foundPhotos.length = 0;
        }

        if(!rights.send_videos) {
          foundVideos.forEach((mimeType) => indexOfAndSplice(foundMedia, mimeType));
          foundVideos.length = 0;
        }

        this.log('drag files', types, foundMedia, foundDocuments, foundPhotos, foundVideos);

        if(newMediaPopup) {
          newMediaPopup.appendDrops(_dropsContainer);

          const length = (rights.send_docs ? [foundDocuments] : [foundPhotos, foundVideos]).reduce((acc, v) => acc + v.length, 0);
          if(length || force) {
            _drops.push(new ChatDragAndDrop(_dropsContainer, {
              header: 'Preview.Dragging.AddItems',
              headerArgs: [length],
              onDrop: (e: DragEvent) => {
                toggle(e, false);
                this.log('drop', e);
                this.onDocumentPaste(e, 'document');
              }
            }));
          }
        } else {
          if(foundDocuments.length || force) {
            _drops.push(new ChatDragAndDrop(_dropsContainer, {
              icon: 'dragfiles',
              header: 'Chat.DropTitle',
              subtitle: 'Chat.DropAsFilesDesc',
              onDrop: (e: DragEvent) => {
                toggle(e, false);
                this.log('drop', e);
                this.onDocumentPaste(e, 'document');
              }
            }));
          }

          if(foundMedia.length || force) {
            _drops.push(new ChatDragAndDrop(_dropsContainer, {
              icon: 'dragmedia',
              header: 'Chat.DropTitle',
              subtitle: 'Chat.DropQuickDesc',
              onDrop: (e: DragEvent) => {
                toggle(e, false);
                this.log('drop', e);
                this.onDocumentPaste(e, 'media');
              }
            }));
          }

          this.chat.container.append(_dropsContainer);
        }
      }

      // if(!mount) return;

      SetTransition({
        element: _dropsContainer,
        className: 'is-visible',
        forwards: mount,
        duration: 200,
        onTransitionEnd: () => {
          if(!mount) {
            _drops.forEach((drop) => {
              drop.destroy();
            });

            _drops.length = 0;
          }
        }
      });

      if(mount) {
        _drops.forEach((drop) => {
          drop.setPath();
        });
      } else {
        counter = 0;
      }

      document.body.classList.toggle('is-dragging', mount);
      mounted = mount;
    };

    /* document.body.addEventListener('dragover', (e) => {
      cancelEvent(e);
    }); */

    let counter = 0;
    document.body.addEventListener('dragenter', (e) => {
      counter++;
    });

    document.body.addEventListener('dragover', (e) => {
      // this.log('dragover', e/* , e.dataTransfer.types[0] */);
      toggle(e, true);
      cancelEvent(e);
    });

    document.body.addEventListener('dragleave', (e) => {
      // this.log('dragleave', e, counter);
      // if((e.pageX <= 0 || e.pageX >= this.managers.appPhotosManager.windowW) || (e.pageY <= 0 || e.pageY >= this.managers.appPhotosManager.windowH)) {
      counter--;
      if(counter === 0) {
      // if(!findUpClassName(e.target, 'drops-container')) {
        toggle(e, false);
      }
    });

    const dropsContainer = document.createElement('div');
    dropsContainer.classList.add('drops-container');

    const mediaDropsContainer = dropsContainer.cloneNode(true) as HTMLElement;
  }

  private async canDrag() {
    const chat = this.chat;
    const peerId = chat?.peerId;
    return !(!peerId || overlayCounter.isOverlayActive || !(await chat.canSend('send_media')));
  }

  private onDocumentPaste = async(e: ClipboardEvent | DragEvent, attachType?: 'media' | 'document') => {
    const newMediaPopup = getCurrentNewMediaPopup();

    // console.log('document paste');
    // console.log('item', event.clipboardData.getData());

    if(e instanceof DragEvent) {
      const _types = e.dataTransfer.types;
      // @ts-ignore
      const isFiles = _types.contains ? _types.contains('Files') : _types.indexOf('Files') >= 0;
      if(isFiles) {
        cancelEvent(e);
      }
    }

    const files = await getFilesFromEvent(e);
    if(!(await this.canDrag()) && !newMediaPopup) return;
    if(files.length) {
      if(newMediaPopup) {
        newMediaPopup.addFiles(files);
        return;
      }

      const chatInput = this.chat.input;
      chatInput.willAttachType = attachType || (MEDIA_MIME_TYPES_SUPPORTED.has(files[0].type) ? 'media' : 'document');
      PopupElement.createPopup(PopupNewMedia, this.chat, files, chatInput.willAttachType);
    }
  };

  private async overrideHash(peerId?: PeerId) {
    let str: string;
    if(peerId) {
      const username = await this.managers.appPeersManager.getPeerUsername(peerId);
      str = username ? '@' + username : '' + peerId;
    }

    appNavigationController.overrideHash(str);
  }

  public selectTab(id: APP_TABS, animate?: boolean) {
    if(animate === false) { // * will be used for Safari iOS history swipe
      disableTransition([appSidebarLeft.sidebarEl, this.columnEl, appSidebarRight.sidebarEl]);
    }

    document.body.classList.toggle(LEFT_COLUMN_ACTIVE_CLASSNAME, id === APP_TABS.CHATLIST);

    const prevTabId = this.tabId;
    if(prevTabId !== undefined) {
      this.overrideHash(id > APP_TABS.CHATLIST ? this.chat?.peerId : undefined);
      this.dispatchEvent('tab_changing', id);
    }

    this.log('selectTab', id, prevTabId);

    let animationPromise: Promise<any> = liteMode.isAvailable('animations') ? doubleRaf() : Promise.resolve();
    if(
      prevTabId !== undefined &&
      prevTabId !== id &&
      liteMode.isAvailable('animations') &&
      animate !== false/*  &&
      mediaSizes.activeScreen !== ScreenSize.large */
    ) {
      const transitionTime = (mediaSizes.isMobile ? 250 : 200) + 100; // * cause transition time could be > 250ms
      animationPromise = pause(transitionTime);
      dispatchHeavyAnimationEvent(animationPromise, transitionTime);

      // ! it's very heavy operation. will blink in firefox
      /* this.columnEl.classList.add('disable-hover');
      animationPromise.finally(() => {
        this.columnEl.classList.remove('disable-hover');
      }); */
    }

    this.tabId = id;
    blurActiveElement();
    if(mediaSizes.isMobile && prevTabId === APP_TABS.PROFILE && id < APP_TABS.PROFILE) {
      document.body.classList.remove(RIGHT_COLUMN_ACTIVE_CLASSNAME);
    }

    if(prevTabId !== undefined && id > prevTabId) {
      if(id < APP_TABS.PROFILE || !appNavigationController.findItemByType('im')) {
        appNavigationController.pushItem({
          type: 'im',
          onPop: (canAnimate) => {
            // this.selectTab(prevTabId, !isSafari);
            this.setPeer({}, canAnimate);
          }
        });
      }
    }

    const onImTabChange = (window as any).onImTabChange;
    onImTabChange && onImTabChange(id);

    // this._selectTab(id, mediaSizes.isMobile);
    // document.body.classList.toggle(RIGHT_COLUMN_ACTIVE_CLASSNAME, id === 2);

    return animationPromise;
  }

  public updateStatus() {
    return this.managers.appUsersManager.updateMyOnlineStatus(this.offline);
  }

  private createNewChat() {
    const chat = new Chat(
      this,
      this.managers
    );

    if(this.chats.length) {
      chat.setBackground(this.lastBackgroundUrl, true);
    }

    this.chats.push(chat);

    return chat;
  }

  private spliceChats(fromIndex: number, justReturn = true, animate?: boolean, spliced?: Chat[]) {
    if(fromIndex >= this.chats.length) return;

    const chatFrom = this.chat;
    if(this.chats.length > 1 && justReturn) {
      this.dispatchEvent('peer_changing', this.chat);
    }

    if(!spliced) {
      spliced = this.chats.splice(fromIndex, this.chats.length - fromIndex);
    }

    const chatTo = this.chat;
    this.dispatchEvent('chat_changing', {from: chatFrom, to: chatTo});

    // * -1 because one item is being sliced when closing the chat by calling .removeByType
    for(let i = 0; i < spliced.length - 1; ++i) {
      appNavigationController.removeByType('chat', true);
    }

    // * fix middle chat z-index on animation
    if(spliced.length > 1) {
      spliced.slice(0, -1).forEach((chat) => {
        chat.container.remove();
      });
    }

    this.chatsSelectTab(chatTo.container, animate);

    if(justReturn) {
      this.dispatchEvent('peer_changed', chatTo);

      const searchTab = appSidebarRight.getTab(AppPrivateSearchTab);
      searchTab?.close();

      appSidebarRight.replaceSharedMediaTab(chatTo.sharedMediaTab);
    }

    spliced.forEach((chat) => {
      chat.beforeDestroy();
    });

    setTimeout(() => {
      // chat.setPeer(0);
      spliced.forEach((chat) => {
        chat.destroy();
      });
    }, 250 + 100);
  }

  public async setPeer(options: Partial<ChatSetInnerPeerOptions> = {}, animate?: boolean): Promise<boolean> {
    if(this.init) {
      this.init();
      this.init = null;
    }

    options.peerId ??= NULL_PEER_ID;

    const {peerId, lastMsgId, threadId} = options;

    const chat = this.chat;
    const chatIndex = this.chats.indexOf(chat);
    const isSamePeer = this.isSamePeer(chat, options as any);
    if(!peerId) {
      if(chatIndex > 0) {
        this.spliceChats(chatIndex, undefined, animate);
        return;
      } else if(mediaSizes.activeScreen === ScreenSize.medium) { // * floating sidebar case
        this.selectTab(+!this.tabId, animate);
        return;
      }
    } else if(chatIndex > 0 && chat.peerId && !isSamePeer) {
      // const firstChat = this.chats[0];
      // if(firstChat.peerId !== chat.peerId) {
      /* // * slice idx > 0, set background and slice first, so new one will be the first
        const spliced = this.chats.splice(1, this.chats.length - 1);
        this.createNewChat();
        this.chats.splice(0, 1); */
      const spliced = this.chats.splice(1, this.chats.length - 1);
      if(this.chat.peerId === peerId) {
        this.spliceChats(0, true, true, spliced);
        return;
      } else {
        const ret = this.setPeer(options);
        this.spliceChats(0, false, false, spliced);
        return ret;
      }
      // } else {
      //   this.spliceChats(1, false, animate);
      // }

      // return ret;
    }

    // * don't reset peer if returning
    if(isSamePeer && mediaSizes.activeScreen <= ScreenSize.medium && document.body.classList.contains(LEFT_COLUMN_ACTIVE_CLASSNAME)) {
      this.selectTab(APP_TABS.CHAT, animate);
      return false;
    }

    if(peerId || mediaSizes.activeScreen !== ScreenSize.mobile) {
      const result = await chat.setPeer(options as any as Parameters<Chat['setPeer']>[0]);

      // * wait for cached render
      const promise = result?.cached ? result.promise : Promise.resolve();
      if(peerId) {
        Promise.all([
          promise,
          chat.setBackgroundPromise
        ]).then(() => {
          // window.requestAnimationFrame(() => {
          setTimeout(() => { // * setTimeout is better here
            setTimeout(() => {
              this.chatsSelectTab(this.chat.container);
            }, 0);
            this.selectTab(APP_TABS.CHAT, animate);
          }, 0);
        });
      }
    }

    if(!peerId) {
      this.selectTab(APP_TABS.CHATLIST, animate);
      return false;
    }
  }

  public async setInnerPeer(options: ChatSetInnerPeerOptions) {
    const {peerId} = options;
    if(peerId === NULL_PEER_ID || !peerId) {
      return;
    }

    if(!options.type) {
      if(options.threadId && !(await this.managers.appPeersManager.isForum(options.peerId))) {
        options.type = 'discussion';
      }

      options.type ??= 'chat';
    }

    // * reuse current chat
    const existingIndex = this.chats.findIndex((chat) => this.isSamePeer(chat, options) || (mediaSizes.activeScreen === ScreenSize.mobile && this.tabId === 0));
    if(existingIndex !== -1) {
      this.spliceChats(existingIndex + 1);
      return this.setPeer(options);
    }

    const oldChat = this.chat;
    let chat = oldChat;
    if(oldChat.inited) { // * use first not inited chat
      chat = this.createNewChat();
    }

    this.dispatchEvent('chat_changing', {from: oldChat, to: chat});

    // this.chatsSelectTab(chat.container);

    return this.setPeer(options);
  }

  public openScheduled(peerId: PeerId) {
    this.setInnerPeer({
      peerId,
      type: 'scheduled'
    });
  }

  private getTypingElement(action: SendMessageAction) {
    const el = document.createElement('span');
    let c = 'peer-typing';
    el.classList.add(c);
    el.dataset.action = action._;
    switch(action._) {
      case 'sendMessageTypingAction': {
      // default: {
        c += '-text';
        for(let i = 0; i < 3; ++i) {
          const dot = document.createElement('span');
          dot.className = c + '-dot';
          el.append(dot);
        }
        break;
      }

      case 'sendMessageUploadAudioAction':
      case 'sendMessageUploadDocumentAction':
      case 'sendMessageUploadRoundAction':
      case 'sendMessageUploadVideoAction':
      case 'sendMessageUploadPhotoAction': {
        c += '-upload';
        /* const trail = document.createElement('span');
        trail.className = c + '-trail';
        el.append(trail); */
        break;
      }

      case 'sendMessageRecordAudioAction':
      case 'sendMessageRecordRoundAction':
      case 'sendMessageRecordVideoAction': {
        c += '-record';
        break;
      }

      case 'sendMessageEmojiInteractionSeen':
      case 'sendMessageChooseStickerAction': {
        c += '-choosing-sticker';
        for(let i = 0; i < 2; ++i) {
          const eye = document.createElement('div');
          eye.className = c + '-eye';
          el.append(eye);
        }
        break;
      }
    }

    el.classList.add(c);

    return el;
  }

  public async getPeerTyping(peerId: PeerId, container?: HTMLElement, threadId?: number) {
    // const log = this.log.bindPrefix('getPeerTyping-' + peerId);
    // log('getting peer typing');

    const isUser = peerId.isUser();
    if(isUser && await this.managers.appUsersManager.isBot(peerId)) {
      // log('a bot');
      return;
    }

    const typings = await this.managers.appProfileManager.getPeerTypings(peerId, threadId);
    if(!typings?.length) {
      // log('have no typing');
      return;
    }

    const typing = typings[0];

    const langPackKeys: {
      [peerType in 'private' | 'chat' | 'multi']?: Partial<{[action in SendMessageAction['_']]: LangPackKey}>
    } = {
      private: {
        'sendMessageTypingAction': 'Peer.Activity.User.TypingText',
        'sendMessageUploadAudioAction': 'Peer.Activity.User.SendingFile',
        'sendMessageUploadDocumentAction': 'Peer.Activity.User.SendingFile',
        'sendMessageUploadPhotoAction': 'Peer.Activity.User.SendingPhoto',
        'sendMessageUploadVideoAction': 'Peer.Activity.User.SendingVideo',
        'sendMessageUploadRoundAction': 'Peer.Activity.User.SendingVideo',
        'sendMessageRecordVideoAction': 'Peer.Activity.User.RecordingVideo',
        'sendMessageRecordAudioAction': 'Peer.Activity.User.RecordingAudio',
        'sendMessageRecordRoundAction': 'Peer.Activity.User.RecordingVideo',
        'sendMessageGamePlayAction': 'Peer.Activity.User.PlayingGame',
        'sendMessageChooseStickerAction': 'Peer.Activity.User.ChoosingSticker',
        'sendMessageEmojiInteractionSeen': 'Peer.Activity.User.EnjoyingAnimations'
      },
      chat: {
        'sendMessageTypingAction': 'Peer.Activity.Chat.TypingText',
        'sendMessageUploadAudioAction': 'Peer.Activity.Chat.SendingFile',
        'sendMessageUploadDocumentAction': 'Peer.Activity.Chat.SendingFile',
        'sendMessageUploadPhotoAction': 'Peer.Activity.Chat.SendingPhoto',
        'sendMessageUploadVideoAction': 'Peer.Activity.Chat.SendingVideo',
        'sendMessageUploadRoundAction': 'Peer.Activity.Chat.SendingVideo',
        'sendMessageRecordVideoAction': 'Peer.Activity.Chat.RecordingVideo',
        'sendMessageRecordAudioAction': 'Peer.Activity.Chat.RecordingAudio',
        'sendMessageRecordRoundAction': 'Peer.Activity.Chat.RecordingVideo',
        'sendMessageGamePlayAction': 'Peer.Activity.Chat.PlayingGame',
        'sendMessageChooseStickerAction': 'Peer.Activity.Chat.ChoosingSticker',
        'sendMessageEmojiInteractionSeen': 'Peer.Activity.Chat.EnjoyingAnimations'
      },
      multi: {
        'sendMessageTypingAction': 'Peer.Activity.Chat.Multi.TypingText1',
        'sendMessageUploadAudioAction': 'Peer.Activity.Chat.Multi.SendingFile1',
        'sendMessageUploadDocumentAction': 'Peer.Activity.Chat.Multi.SendingFile1',
        'sendMessageUploadPhotoAction': 'Peer.Activity.Chat.Multi.SendingPhoto1',
        'sendMessageUploadVideoAction': 'Peer.Activity.Chat.Multi.SendingVideo1',
        'sendMessageUploadRoundAction': 'Peer.Activity.Chat.Multi.SendingVideo1',
        'sendMessageRecordVideoAction': 'Peer.Activity.Chat.Multi.RecordingVideo1',
        'sendMessageRecordAudioAction': 'Peer.Activity.Chat.Multi.RecordingAudio1',
        'sendMessageRecordRoundAction': 'Peer.Activity.Chat.Multi.RecordingVideo1',
        'sendMessageGamePlayAction': 'Peer.Activity.Chat.Multi.PlayingGame1',
        'sendMessageChooseStickerAction': 'Peer.Activity.Chat.Multi.ChoosingSticker1'
      }
    };

    const mapa = isUser ? langPackKeys.private : (typings.length > 1 ? langPackKeys.multi : langPackKeys.chat);
    let action = typing.action;

    if(typings.length > 1) {
      const s: any = {};
      typings.forEach((typing) => {
        const type = typing.action._;
        if(s[type] === undefined) s[type] = 0;
        ++s[type];
      });

      if(Object.keys(s).length > 1) {
        action = {
          _: 'sendMessageTypingAction'
        };
      }
    }

    const langPackKey = mapa[action._];
    if(!langPackKey) {
      // log('no langPackKey');
      return;
    }

    let peerTitlePromise: Promise<any>;
    let args: any[];
    if(peerId.isAnyChat()) {
      const peerTitle = new PeerTitle();
      peerTitlePromise = peerTitle.update({peerId: typing.userId.toPeerId(false), onlyFirstName: true});
      args = [
        peerTitle.element,
        typings.length - 1
      ];

      await peerTitlePromise;
    }

    if(!container) {
      container = document.createElement('span');
      container.classList.add('online', 'peer-typing-container');
    }

    container.classList.toggle('peer-typing-flex', action._ === 'sendMessageChooseStickerAction' || action._ === 'sendMessageEmojiInteractionSeen');

    let typingElement = container.firstElementChild as HTMLElement;
    if(!typingElement) {
      typingElement = this.getTypingElement(action);
      container.prepend(typingElement);
    } else {
      if(typingElement.dataset.action !== action._) {
        typingElement.replaceWith(this.getTypingElement(action));
      }
    }

    if(action._ === 'sendMessageEmojiInteractionSeen') {
      if(args) {
        args.pop();
      } else {
        args = [];
      }

      const span = htmlToSpan(wrapEmojiText(action.emoticon));
      args.push(span);
    }

    const descriptionElement = i18n(langPackKey, args);
    descriptionElement.classList.add('peer-typing-description');

    if(container.childElementCount > 1) container.lastElementChild.replaceWith(descriptionElement);
    else container.append(descriptionElement);

    // log('returning typing');
    return container;
  }

  private async getChatStatus(chatId: ChatId, noTyping?: boolean): Promise<AckedResult<HTMLElement>> {
    const typingEl = noTyping ? undefined : await this.getPeerTyping(chatId.toPeerId(true));
    if(typingEl) {
      return {cached: true, result: Promise.resolve(typingEl)};
    }

    const result = await this.managers.acknowledged.appProfileManager.getChatFull(chatId);
    const dooo = async(chatInfo: ChatFull) => {
      // this.chat.log('chatInfo res:', chatInfo);

      const participants_count = (chatInfo as ChatFull.channelFull).participants_count ||
        ((chatInfo as ChatFull.chatFull).participants as ChatParticipants.chatParticipants)?.participants?.length ||
        1;
      // if(participants_count) {
      let subtitle = await getChatMembersString(chatId);

      if(participants_count < 2) {
        return subtitle;
      }

      const onlines = await this.managers.appProfileManager.getOnlines(chatId);
      if(onlines > 1) {
        const span = document.createElement('span');

        span.append(...join([subtitle, i18n('OnlineCount', [numberThousandSplitter(onlines)])], false));
        subtitle = span;
      }

      return subtitle;
      // }
    };

    const promise = Promise.resolve(result.result).then(dooo);
    return {
      cached: result.cached,
      result: promise
    };
  }

  private async getUserStatus(userId: UserId, ignoreSelf?: boolean) {
    const result: AckedResult<HTMLElement> = {
      cached: true,
      result: Promise.resolve(undefined as HTMLElement)
    };

    const user = await this.managers.appUsersManager.getUser(userId);
    if(!user || (user.pFlags.self && !ignoreSelf)) {
      return result;
    }

    const subtitle = getUserStatusString(user);

    if(!user.pFlags.bot && !user.pFlags.support) {
      let typingEl = await this.getPeerTyping(userId.toPeerId());
      if(!typingEl && user.status?._ === 'userStatusOnline') {
        typingEl = document.createElement('span');
        typingEl.classList.add('online');
        typingEl.append(subtitle);
      }

      if(typingEl) {
        result.result = Promise.resolve(typingEl);
        return result;
      }
    }

    result.result = Promise.resolve(subtitle);
    return result;
  }

  private async getPeerStatus(peerId: PeerId, ignoreSelf?: boolean, noTyping?: boolean) {
    if(!peerId) return;
    let promise: Promise<AckedResult<HTMLElement>>;
    if(peerId.isAnyChat()) {
      promise = this.getChatStatus(peerId.toChatId(), noTyping);
    } else {
      promise = this.getUserStatus(peerId.toUserId(), ignoreSelf);
    }

    return promise;
  }

  public async setPeerStatus(options: {
    peerId: PeerId,
    element: HTMLElement,
    needClear: boolean,
    useWhitespace: boolean,
    middleware: () => boolean,
    ignoreSelf?: boolean,
    noTyping?: boolean
  }) {
    // const log = this.log.bindPrefix('status-' + peerId);
    // log('setting status', element);

    const {peerId, element, needClear, useWhitespace, middleware, ignoreSelf, noTyping} = options;

    if(!needClear) {
      // * good good good
      const typingContainer = element.querySelector('.peer-typing-container') as HTMLElement;
      if(typingContainer && await this.getPeerTyping(peerId, typingContainer)) {
        // log('already have a status');
        return;
      }
    }

    const result = await this.getPeerStatus(peerId, ignoreSelf, noTyping);
    // log('getPeerStatus result', result);
    if(!middleware()) {
      // log.warn('middleware');
      return;
    }

    const set = async() => {
      const subtitle = result && await result.result;
      if(!middleware()) {
        return;
      }

      return () => replaceContent(element, subtitle || placeholder);
    };

    const placeholder = useWhitespace ? NBSP : ''; // ! HERE U CAN FIND WHITESPACE
    if(!result || result.cached || needClear === undefined) {
      return await set();
    } else if(needClear) {
      return () => {
        element.textContent = placeholder;
        return set().then((callback) => callback?.());
      };
    }
  }

  public setChoosingStickerTyping(cancel: boolean) {
    this.managers.appMessagesManager.setTyping(this.chat.peerId, {_: cancel ? 'sendMessageCancelAction' : 'sendMessageChooseStickerAction'}, undefined, this.chat.threadId);
  }

  public isSamePeer(options1: {peerId: PeerId, threadId?: number, type?: ChatType}, options2: typeof options1) {
    return options1.peerId === options2.peerId &&
      options1.threadId === options2.threadId &&
      (typeof(options1.type) !== typeof(options2.type) || options1.type === options2.type);
  }

  public giftPremium(peerId: PeerId) {
    this.managers.appProfileManager.getProfile(peerId.toUserId()).then((profile) => {
      PopupElement.createPopup(PopupGiftPremium, peerId, profile.premium_gifts);
    });
  }
}

const appImManager = new AppImManager();
MOUNT_CLASS_TO && (MOUNT_CLASS_TO.appImManager = appImManager);
export default appImManager;
