import { CHAT_ANIMATION_GROUP } from "../../lib/appManagers/appImManager";
import type { AppMessagesManager, Dialog, HistoryResult } from "../../lib/appManagers/appMessagesManager";
import type { AppSidebarRight } from "../sidebarRight";
import type { AppStickersManager } from "../../lib/appManagers/appStickersManager";
import type { AppUsersManager } from "../../lib/appManagers/appUsersManager";
import type { AppInlineBotsManager } from "../../lib/appManagers/appInlineBotsManager";
import type { AppPhotosManager } from "../../lib/appManagers/appPhotosManager";
import type { AppDocsManager } from "../../lib/appManagers/appDocsManager";
import type { AppPeersManager } from "../../lib/appManagers/appPeersManager";
import { findUpClassName, cancelEvent, findUpTag, whichChild, getElementByPoint, attachClickEvent } from "../../helpers/dom";
import { getObjectKeysAndSort } from "../../helpers/object";
import { isTouchSupported } from "../../helpers/touchSupport";
import { logger } from "../../lib/logger";
import rootScope from "../../lib/rootScope";
import AppMediaViewer from "../appMediaViewer";
import BubbleGroups from "./bubbleGroups";
import PopupDatePicker from "../popupDatepicker";
import PopupForward from "../popupForward";
import PopupStickers from "../popupStickers";
import ProgressivePreloader from "../preloader";
import Scrollable from "../scrollable";
import StickyIntersector from "../stickyIntersector";
import animationIntersector from "../animationIntersector";
import { months } from "../../helpers/date";
import RichTextProcessor from "../../lib/richtextprocessor";
import mediaSizes from "../../helpers/mediaSizes";
import { isAndroid, isApple, isSafari } from "../../helpers/userAgent";
import { langPack } from "../../lib/langPack";
import AvatarElement from "../avatar";
import { formatPhoneNumber } from "../misc";
import { ripple } from "../ripple";
import { wrapAlbum, wrapPhoto, wrapVideo, wrapDocument, wrapSticker, wrapPoll, wrapReply, wrapGroupedDocuments } from "../wrappers";
import { MessageRender } from "./messageRender";
import LazyLoadQueue from "../lazyLoadQueue";
import { AppChatsManager } from "../../lib/appManagers/appChatsManager";
import Chat from "./chat";
import ListenerSetter from "../../helpers/listenerSetter";
import { pause } from "../../helpers/schedulers";

const IGNORE_ACTIONS = ['messageActionHistoryClear'];

const TEST_SCROLL_TIMES: number = undefined;
let TEST_SCROLL = TEST_SCROLL_TIMES;

let queueId = 0;

export default class ChatBubbles {
  bubblesContainer: HTMLDivElement;
  chatInner: HTMLDivElement;
  scrollable: Scrollable;
  scroll: HTMLElement;

  private getHistoryTopPromise: Promise<boolean>;
  private getHistoryBottomPromise: Promise<boolean>;

  public peerId = 0;
  //public messagesCount: number = -1;

  public unreadOut = new Set<number>();
  public needUpdate: {replyMid: number, mid: number}[] = []; // if need wrapSingleMessage

  public bubbles: {[mid: string]: HTMLDivElement} = {};
  public dateMessages: {[timestamp: number]: { 
    div: HTMLDivElement, 
    firstTimestamp: number, 
    container: HTMLDivElement,
    timeout?: number 
  }} = {};

  private scrolledDown = true;
  private isScrollingTimeout = 0;

  private stickyIntersector: StickyIntersector;

  private unreadedObserver: IntersectionObserver;
  private unreaded: number[] = [];

  public bubbleGroups: BubbleGroups;

  private preloader: ProgressivePreloader = null;
  
  private scrolledAll: boolean;
  private scrolledAllDown: boolean;

  private loadedTopTimes = 0;
  private loadedBottomTimes = 0;

  public messagesQueuePromise: Promise<void> = null;
  private messagesQueue: {message: any, bubble: HTMLDivElement, reverse: boolean, promises: Promise<void>[]}[] = [];
  private messagesQueueOnRender: () => void = null;

  private firstUnreadBubble: HTMLDivElement = null;
  private attachedUnreadBubble: boolean;

  public lazyLoadQueue: LazyLoadQueue;

  private cleanupObj = {cleaned: false};

  private log: ReturnType<typeof logger>;

  public listenerSetter: ListenerSetter;

  public replyFollowHistory: number[] = [];

  constructor(private chat: Chat, private appMessagesManager: AppMessagesManager, private appSidebarRight: AppSidebarRight, private appStickersManager: AppStickersManager, private appUsersManager: AppUsersManager, private appInlineBotsManager: AppInlineBotsManager, private appPhotosManager: AppPhotosManager, private appDocsManager: AppDocsManager, private appPeersManager: AppPeersManager, private appChatsManager: AppChatsManager) {
    this.chat.log.error('Bubbles construction');
    
    this.listenerSetter = new ListenerSetter();

    this.bubblesContainer = document.createElement('div');
    this.bubblesContainer.classList.add('bubbles', 'scrolled-down');

    this.chatInner = document.createElement('div');
    this.chatInner.classList.add('bubbles-inner');

    this.bubblesContainer.append(this.chatInner);

    this.setScroll();

    // * constructor end

    this.log = this.chat.log;
    this.bubbleGroups = new BubbleGroups();
    this.preloader = new ProgressivePreloader(null, false);
    this.lazyLoadQueue = new LazyLoadQueue();
    this.lazyLoadQueue.queueId = ++queueId;

    // * events

    // will call when message is sent (only 1)
    this.listenerSetter.add(rootScope, 'history_append', (e) => {
      let details = e.detail;

      if(!this.scrolledAllDown) {
        this.chat.setPeer(this.peerId, 0);
      } else {
        this.renderNewMessagesByIds([details.messageId], true);
      }
    });
    
    // will call when sent for update pos
    this.listenerSetter.add(rootScope, 'history_update', (e) => {
      let details = e.detail;
      
      if(details.mid && details.peerId == this.peerId) {
        let mid = details.mid;
        
        let bubble = this.bubbles[mid];
        if(!bubble) return;
        
        let message = appMessagesManager.getMessage(mid);
        //this.log('history_update', this.bubbles[mid], mid, message);

        let dateMessage = this.getDateContainerByMessage(message, false);
        dateMessage.container.append(bubble);

        this.bubbleGroups.addBubble(bubble, message, false);

        //this.renderMessage(message, false, false, bubble);
      }
    });

    this.listenerSetter.add(rootScope, 'history_multiappend', (e) => {
      const msgIdsByPeer = e.detail;

      for(const peerId in msgIdsByPeer) {
        appSidebarRight.sharedMediaTab.renderNewMessages(+peerId, msgIdsByPeer[peerId]);
      }

      if(!(this.peerId in msgIdsByPeer)) return;
      const msgIds = msgIdsByPeer[this.peerId];
      this.renderNewMessagesByIds(msgIds);
    });
    
    this.listenerSetter.add(rootScope, 'history_delete', (e) => {
      const {peerId, msgs} = e.detail;

      const mids = Object.keys(msgs).map(s => +s);
      appSidebarRight.sharedMediaTab.deleteDeletedMessages(peerId, mids);

      if(peerId == this.peerId) {
        this.deleteMessagesByIds(mids);
      }
    });

    this.listenerSetter.add(rootScope, 'dialog_flush', (e) => {
      let peerId: number = e.detail.peerId;
      if(this.peerId == peerId) {
        this.deleteMessagesByIds(Object.keys(this.bubbles).map(m => +m));
      }
    });

    // Calls when message successfully sent and we have an id
    this.listenerSetter.add(rootScope, 'message_sent', (e) => {
      const {tempId, mid} = e.detail;
      
      this.log('message_sent', e.detail);

      const message = this.appMessagesManager.getMessage(mid);

      appSidebarRight.sharedMediaTab.renderNewMessages(message.peerId, [mid]);

      const mounted = this.getMountedBubble(tempId) || this.getMountedBubble(mid);
      if(mounted) {
        const bubble = mounted.bubble;
        //this.bubbles[mid] = bubble;
        
        /////this.log('message_sent', bubble);

        // set new mids to album items for mediaViewer
        if(message.grouped_id) {
          const item = bubble.querySelector(`.grouped-item[data-mid="${tempId}"]`) as HTMLElement;
          item.dataset.mid = '' + mid;
        }

        if(message.media?.poll) {
          const newPoll = message.media.poll;
          const pollElement = bubble.querySelector('poll-element');
          if(pollElement) {
            pollElement.setAttribute('poll-id', newPoll.id);
            pollElement.setAttribute('message-id', '' + mid);
          }
        }

        if(['audio', 'voice'].includes(message.media?.document?.type)) {
          const audio = bubble.querySelector(`audio-element[message-id="${tempId}"]`);
          audio.setAttribute('doc-id', message.media.document.id);
          audio.setAttribute('message-id', '' + mid);
        }

        /* bubble.classList.remove('is-sending');
        bubble.classList.add('is-sent');
        bubble.dataset.mid = '' + mid;

        this.bubbleGroups.removeBubble(bubble, tempId); */

        if(message.media?.webpage && !bubble.querySelector('.web')) {
          this.renderMessage(message, true, false, bubble, false);
          /* const mounted = this.getMountedBubble(mid);
          if(!mounted) return;
          this.renderMessage(mounted.message, true, false, mounted.bubble, false); */
        }
        
        //delete this.bubbles[tempId];
      } else {
        this.log.warn('message_sent there is no bubble', e.detail);
      }

      if(this.bubbles[tempId]) {
        const bubble = this.bubbles[tempId];
        this.bubbles[mid] = bubble;
        delete this.bubbles[tempId];

        bubble.classList.remove('is-sending');
        bubble.classList.add('is-sent');
        bubble.dataset.mid = '' + mid;

        this.bubbleGroups.removeBubble(bubble, tempId);
      }

      if(this.unreadOut.has(tempId)) {
        this.unreadOut.delete(tempId);
        this.unreadOut.add(mid);
      }
    });

    this.listenerSetter.add(rootScope, 'message_edit', (e) => {
      const {peerId, mid} = e.detail;
      
      if(peerId != this.peerId) return;
      const mounted = this.getMountedBubble(mid);
      if(!mounted) return;
      this.renderMessage(mounted.message, true, false, mounted.bubble, false);
    });

    this.listenerSetter.add(rootScope, 'album_edit', (e) => {
      const {peerId, groupId, deletedMids} = e.detail;
      
      if(peerId != this.peerId) return;
      const mids = appMessagesManager.getMidsByAlbum(groupId);
      const maxId = Math.max(...mids.concat(deletedMids));
      if(!this.bubbles[maxId]) return;

      const renderMaxId = getObjectKeysAndSort(appMessagesManager.groupedMessagesStorage[groupId], 'asc').pop();
      this.renderMessage(appMessagesManager.getMessage(renderMaxId), true, false, this.bubbles[maxId], false);
    });

    this.listenerSetter.add(rootScope, 'messages_downloaded', (e) => {
      const mids: number[] = e.detail;
      
      mids.forEach(mid => {
        /* const promise = (this.scrollable.scrollLocked && this.scrollable.scrollLockedPromise) || Promise.resolve();
        promise.then(() => {

        }); */
        this.needUpdate.forEachReverse((obj, idx) => {
          if(obj.replyMid == mid) {
            const {mid, replyMid} = this.needUpdate.splice(idx, 1)[0];
            
            //this.log('messages_downloaded', mid, replyMid, i, this.needUpdate, this.needUpdate.length, mids, this.bubbles[mid]);
            const bubble = this.bubbles[mid];
            if(!bubble) return;
            
            const message = appMessagesManager.getMessage(mid);
            
            const repliedMessage = appMessagesManager.getMessage(replyMid);
            if(repliedMessage.deleted) { // чтобы не пыталось бесконечно загрузить удалённое сообщение
              delete message.reply_to_mid; // WARNING!
            }
            
            this.renderMessage(message, true, false, bubble, false);
            //this.renderMessage(message, true, true, bubble, false);
          }
        });
      });
    });

    this.listenerSetter.add(rootScope, 'dialog_drop', (e) => {
      if(e.detail.peerId == this.peerId) {
        this.chat.appImManager.setPeer(0);
      }
    });

    this.listenerSetter.add(rootScope, 'dialog_unread', (e) => {
      const info = e.detail;

      const dialog = appMessagesManager.getDialogByPeerId(info.peerId)[0];
      if(dialog?.peerId == this.peerId) {
        this.chat.input.setUnreadCount();
        this.updateUnreadByDialog(dialog);
      }
    });

    this.listenerSetter.add(rootScope, 'dialogs_multiupdate', (e) => {
      const dialogs = e.detail;

      if(dialogs[this.peerId]) {
        this.chat.input.setUnreadCount();
      }
    });

    this.listenerSetter.add(rootScope, 'dialog_notify_settings', (e) => {
      const peerId = e.detail;

      if(this.peerId == peerId) {
        this.chat.input.setUnreadCount();
      }
    });

    this.listenerSetter.add(this.bubblesContainer, 'click', this.onBubblesClick/* , {capture: true, passive: false} */);
    
    this.stickyIntersector = new StickyIntersector(this.scrollable.container, (stuck, target) => {
      for(const timestamp in this.dateMessages) {
        const dateMessage = this.dateMessages[timestamp];
        if(dateMessage.container == target) {
          dateMessage.div.classList.toggle('is-sticky', stuck);
          break;
        }
      }
    });

    this.unreadedObserver = new IntersectionObserver((entries) => {
      if(this.chat.appImManager.offline) { // ! but you can scroll the page without triggering 'focus', need something now
        return;
      }

      const readed: number[] = [];
    
      entries.forEach(entry => {
        if(entry.isIntersecting) {
          const target = entry.target as HTMLElement;
          const mid = +target.dataset.mid;
          readed.push(mid);
          this.unreadedObserver.unobserve(target);
          this.unreaded.findAndSplice(id => id == mid);
        }
      });

      if(readed.length) {
        const max = Math.max(...readed);

        let length = readed.length;
        for(let i = this.unreaded.length - 1; i >= 0; --i) {
          const mid = this.unreaded[i];
          if(mid < max) {
            length++;
            this.unreaded.splice(i, 1);
          }
        }

        this.log('will readHistory by ids:', max, length);
        
        /* if(this.peerId < 0) {
          max = appMessagesIDsManager.getMessageIdInfo(max)[0];
        } */

        //appMessagesManager.readMessages(readed);
        /* false && */ appMessagesManager.readHistory(this.peerId, max).catch((err: any) => {
          this.log.error('readHistory err:', err);
          appMessagesManager.readHistory(this.peerId, max);
        });
      }
    });
  }

  public constructPinnedHelpers() {
    this.listenerSetter.add(rootScope, 'peer_pinned_messages', (e) => {
      const {peerId, mids, pinned} = e.detail;

      if(peerId !== this.peerId) return;

      if(mids) {
        if(!pinned) {
          this.deleteMessagesByIds(mids);
        }
      }
    });
  }

  public onBubblesClick = (e: Event) => {
    let target = e.target as HTMLElement;
    let bubble: HTMLElement = null;
    try {
      bubble = findUpClassName(target, 'bubble');
    } catch(err) {}
    
    if(!bubble) return;

    if(bubble.classList.contains('is-date') && findUpClassName(target, 'bubble__container')) {
      if(bubble.classList.contains('is-sticky') && !this.chatInner.classList.contains('is-scrolling')) {
        return;
      }

      for(const timestamp in this.dateMessages) {
        const d = this.dateMessages[timestamp];
        if(d.div == bubble) {
          new PopupDatePicker(new Date(+timestamp), this.onDatePick).show();
          break;
        }
      }

      return;
    }

    // ! Trusted - due to audio autoclick
    if(this.chat.selection.isSelecting && e.isTrusted) {
      if(bubble.classList.contains('service') && bubble.dataset.mid === undefined) {
        return;
      }

      cancelEvent(e);
      //console.log('bubble click', e);

      if(isTouchSupported && this.chat.selection.selectedText) {
        this.chat.selection.selectedText = undefined;
        return;
      }

      //this.chatSelection.toggleByBubble(bubble);
      this.chat.selection.toggleByBubble(findUpClassName(target, 'grouped-item') || bubble);
      return;
    }

    const contactDiv: HTMLElement = findUpClassName(target, 'contact');
    if(contactDiv) {
      this.chat.appImManager.setInnerPeer(+contactDiv.dataset.peerId);
      return;
    }

    //this.log('chatInner click:', target);
    const isVideoComponentElement = target.tagName == 'SPAN';
    /* if(isVideoComponentElement) {
      const video = target.parentElement.querySelector('video') as HTMLElement;
      if(video) {
        video.click(); // hot-fix for time and play button
        return;
      }
    } */

    if(bubble.classList.contains('sticker') && target.parentElement.classList.contains('attachment')) {
      const messageId = +bubble.dataset.mid;
      const message = this.appMessagesManager.getMessage(messageId);

      const doc = message.media?.document;

      if(doc?.stickerSetInput) {
        new PopupStickers(doc.stickerSetInput).show();
      }

      return;
    }

    if((target.tagName == 'IMG' && !target.classList.contains('emoji') && target.parentElement.tagName != "AVATAR-ELEMENT" && !target.classList.contains('document-thumb')) 
      || target.classList.contains('album-item')
      || isVideoComponentElement
      || (target.tagName == 'VIDEO' && !bubble.classList.contains('round'))) {
      let messageId = +findUpClassName(target, 'album-item')?.dataset.mid || +bubble.dataset.mid;
      let message = this.appMessagesManager.getMessage(messageId);
      if(!message) {
        this.log.warn('no message by messageId:', messageId);
        return;
      }

      let targets: {element: HTMLElement, mid: number}[] = [];
      let ids = Object.keys(this.bubbles).map(k => +k).filter(id => {
        //if(!this.scrollable.visibleElements.find(e => e.element == this.bubbles[id])) return false;

        let message = this.appMessagesManager.getMessage(id);
        
        return message.media && (message.media.photo || (message.media.document && (message.media.document.type == 'video' || message.media.document.type == 'gif')) || (message.media.webpage && (message.media.webpage.document || message.media.webpage.photo)));
      }).sort((a, b) => a - b);

      ids.forEach(id => {
        let withTail = this.bubbles[id].classList.contains('with-media-tail');
        let str = '.album-item img, .album-item video, .preview img, .preview video, ';
        if(withTail) {
          str += '.bubble__media-container';
        } else {
          str += '.attachment img, .attachment video';
        }

        let elements = this.bubbles[id].querySelectorAll(str) as NodeListOf<HTMLElement>;
        Array.from(elements).forEach((element: HTMLElement) => {
          let albumItem = findUpClassName(element, 'album-item');
          targets.push({
            element,
            mid: +albumItem?.dataset.mid || id
          });
        });
      });

      targets.sort((a, b) => a.mid - b.mid);

      let idx = targets.findIndex(t => t.mid == messageId);

      this.log('open mediaViewer single with ids:', ids, idx, targets);

      if(!targets[idx]) {
        this.log('no target for media viewer!', target);
        return;
      }

      new AppMediaViewer().openMedia(message, targets[idx].element, true, 
        targets.slice(0, idx), targets.slice(idx + 1)/* , !message.grouped_id */);
      
      cancelEvent(e);
      //appMediaViewer.openMedia(message, target as HTMLImageElement);
      return;
    }
    
    if(['IMG', 'DIV', "AVATAR-ELEMENT"].indexOf(target.tagName) === -1) target = findUpTag(target, 'DIV');
    
    if(target.tagName == 'DIV' || target.tagName == "AVATAR-ELEMENT") {
      if(target.classList.contains('goto-original')) {
        let savedFrom = bubble.dataset.savedFrom;
        let splitted = savedFrom.split('_');
        let peerId = +splitted[0];
        let msgId = +splitted[1];
        ////this.log('savedFrom', peerId, msgID);
        this.chat.appImManager.setInnerPeer(peerId, msgId);
        return;
      } else if(target.classList.contains('forward')) {
        const mid = +bubble.dataset.mid;
        new PopupForward([mid]);
        //appSidebarRight.forwardTab.open([mid]);
        return;
      } else if(target.classList.contains('name')) {
        let peerId = +target.dataset.peerId;
        
        if(peerId) {
          this.chat.appImManager.setInnerPeer(peerId);
        }

        return;
      } else if(target.tagName == "AVATAR-ELEMENT") {
        let peerId = +target.getAttribute('peer');
        
        if(peerId) {
          this.chat.appImManager.setInnerPeer(peerId);
        }

        return;
      }
      
      let isReplyClick = false;
      
      try {
        isReplyClick = !!findUpClassName(e.target, 'reply');
      } catch(err) {}
      
      if(isReplyClick && bubble.classList.contains('is-reply')/*  || bubble.classList.contains('forwarded') */) {
        this.replyFollowHistory.push(+bubble.dataset.mid);
        let originalMessageId = +bubble.getAttribute('data-original-mid');
        this.chat.setPeer(this.peerId, originalMessageId);
      }
    } else if(target.tagName == 'IMG' && target.parentElement.tagName == "AVATAR-ELEMENT") {
      let peerId = +target.parentElement.getAttribute('peer');
      
      if(peerId) {
        this.chat.appImManager.setInnerPeer(peerId);
      }
    }
    
    //console.log('chatInner click', e);
  };

  public onGoDownClick() {
    if(this.replyFollowHistory.length) {
      this.replyFollowHistory.forEachReverse((mid, idx) => {
        const bubble = this.bubbles[mid];
        let bad = true;
        if(bubble) {
          const rect = bubble.getBoundingClientRect();
          bad = (this.appPhotosManager.windowH / 2) > rect.top;
        } else {
          const message = this.appMessagesManager.getMessage(mid);
          if(!message.deleted) {
            bad = false;
          }
        }
  
        if(bad) {
          this.replyFollowHistory.splice(idx, 1);
        }
      });

      this.replyFollowHistory.sort((a, b) => b - a);

      const mid = this.replyFollowHistory.pop();
      this.chat.setPeer(this.peerId, mid);
    } else {
      const dialog = this.appMessagesManager.getDialogByPeerId(this.peerId)[0];
      
      if(dialog) {
        this.chat.setPeer(this.peerId/* , dialog.top_message */);
      } else {
        this.log('will scroll down 3');
        this.scroll.scrollTop = this.scroll.scrollHeight;
      }
    }
  }

  public getGroupedBubble(groupId: string) {
    const group = this.appMessagesManager.groupedMessagesStorage[groupId];
    for(const mid in group) {
      if(this.bubbles[mid]) {
        return {
          bubble: this.bubbles[mid], 
          message: this.appMessagesManager.getMessage(+mid)
        };
      }
    }

    return null;
  }

  public getBubbleGroupedItems(bubble: HTMLElement) {
    return Array.from(bubble.querySelectorAll('.grouped-item')) as HTMLElement[];
  }

  public getMountedBubble(mid: number) {
    const message = this.appMessagesManager.getMessage(mid);

    if(message.grouped_id && this.appMessagesManager.getMidsByAlbum(message.grouped_id).length > 1) {
      const a = this.getGroupedBubble(message.grouped_id);
      if(a) {
        a.bubble = a.bubble.querySelector(`.document-container[data-mid="${mid}"]`) || a.bubble;
        return a;
      }
    }

    const bubble = this.bubbles[mid];
    if(!bubble) return;

    return {bubble, message};
  }

  private findNextMountedBubbleByMsgId(mid: number) {
    return this.bubbles[getObjectKeysAndSort(this.bubbles).find(id => {
      if(id < mid) return false;
      return !!this.bubbles[id]?.parentElement;
    })];
  }

  public loadMoreHistory(top: boolean, justLoad = false) {
    //this.log('loadMoreHistory', top);
    if(!this.peerId || /* TEST_SCROLL || */ this.chat.setPeerPromise || (top && this.getHistoryTopPromise) || (!top && this.getHistoryBottomPromise)) return;

    // warning, если иды только отрицательные то вниз не попадёт (хотя мб и так не попадёт)
    let history = Object.keys(this.bubbles).map(id => +id).filter(id => id > 0).sort((a, b) => a - b);
    if(!history.length) return;
    
    if(top && !this.scrolledAll) {
      this.log('Will load more (up) history by id:', history[0], 'maxId:', history[history.length - 1], history);
      /* if(history.length == 75) {
        this.log('load more', this.scrollable.scrollHeight, this.scrollable.scrollTop, this.scrollable);
        return;
      } */
      /* false &&  */this.getHistory(history[0], true, undefined, undefined, justLoad);
    }

    if(this.scrolledAllDown) return;
    
    let dialog = this.appMessagesManager.getDialogByPeerId(this.peerId)[0];
    
    // if scroll down after search
    if(!top && (!dialog || history.indexOf(dialog.top_message) === -1)/*  && this.chat.type == 'chat' */) {
      this.log('Will load more (down) history by maxId:', history[history.length - 1], history);
      /* false &&  */this.getHistory(history[history.length - 1], false, true, undefined, justLoad);
    }
  }

  public onScroll = () => {
    // * В таком случае, кнопка не будет моргать если чат в самом низу, и правильно отработает случай написания нового сообщения и проскролла вниз
    if(this.scrollable.scrollLocked && this.scrolledDown) return;
      //lottieLoader.checkAnimations(false, 'chat');

    if(!isTouchSupported) {
      if(this.isScrollingTimeout) {
        clearTimeout(this.isScrollingTimeout);
      } else if(!this.chatInner.classList.contains('is-scrolling')) {
        this.chatInner.classList.add('is-scrolling');
      }
  
      this.isScrollingTimeout = window.setTimeout(() => {
        this.chatInner.classList.remove('is-scrolling');
        this.isScrollingTimeout = 0;
      }, 1350);
    }
    
    if(this.scrollable.isScrolledDown) {
      this.bubblesContainer.classList.add('scrolled-down');
      this.scrolledDown = true;
    } else if(this.bubblesContainer.classList.contains('scrolled-down')) {
      this.bubblesContainer.classList.remove('scrolled-down');
      this.scrolledDown = false;
    }

    if(this.chat.topbar.pinnedMessage) {
      this.chat.topbar.pinnedMessage.setCorrectIndex(this.scrollable.lastScrollDirection);
    }
  };

  public setScroll() {
    this.scrollable = new Scrollable(this.bubblesContainer/* .firstElementChild */ as HTMLElement, 'IM', /* 10300 */300);

    /* const getScrollOffset = () => {
      //return Math.round(Math.max(300, appPhotosManager.windowH / 1.5));
      return 300; 
    };

    window.addEventListener('resize', () => {
      this.scrollable.onScrollOffset = getScrollOffset();
    });

    this.scrollable = new Scrollable(this.bubblesContainer, 'y', 'IM', this.chatInner, getScrollOffset()); */
    this.scroll = this.scrollable.container;

    this.scrollable.onAdditionalScroll = this.onScroll;
    this.scrollable.onScrolledTop = () => this.loadMoreHistory(true);
    this.scrollable.onScrolledBottom = () => this.loadMoreHistory(false);
    //this.scrollable.attachSentinels(undefined, 300);

    this.bubblesContainer.classList.add('scrolled-down');

    if(isTouchSupported) {
      this.scroll.addEventListener('touchmove', () => {
        if(this.isScrollingTimeout) {
          clearTimeout(this.isScrollingTimeout);
        } else if(!this.chatInner.classList.contains('is-scrolling')) {
          this.chatInner.classList.add('is-scrolling');
        }
      }, {passive: true});

      this.scroll.addEventListener('touchend', () => {
        if(!this.chatInner.classList.contains('is-scrolling')) {
          return;
        }

        if(this.isScrollingTimeout) {
          clearTimeout(this.isScrollingTimeout);
        }

        this.isScrollingTimeout = window.setTimeout(() => {
          this.chatInner.classList.remove('is-scrolling');
          this.isScrollingTimeout = 0;
        }, 1350);
      }, {passive: true});
    }
  }

  public updateUnreadByDialog(dialog: Dialog) {
    let maxId = this.peerId == rootScope.myId ? dialog.read_inbox_max_id : dialog.read_outbox_max_id;
    
    ///////this.log('updateUnreadByDialog', maxId, dialog, this.unreadOut);
    
    for(let msgId of this.unreadOut) {
      if(msgId > 0 && msgId <= maxId) {
        let bubble = this.bubbles[msgId];
        if(bubble) {
          bubble.classList.remove('is-sent');
          bubble.classList.add('is-read');
        }
        
        this.unreadOut.delete(msgId);
      }
    }
  }
  
  public deleteMessagesByIds(mids: number[]) {
    mids.forEach(mid => {
      if(!(mid in this.bubbles)) return;
      
      /* const mounted = this.getMountedBubble(mid);
      if(!mounted) return; */

      const bubble = this.bubbles[mid];
      delete this.bubbles[mid];

      if(this.firstUnreadBubble == bubble) {
        this.firstUnreadBubble = null;
      }

      this.bubbleGroups.removeBubble(bubble, mid);
      this.unreadedObserver.unobserve(bubble);
      //this.unreaded.findAndSplice(mid => mid == id);
      bubble.remove();
      //bubble.remove();
    });
    
    animationIntersector.checkAnimations(false, CHAT_ANIMATION_GROUP);
    this.deleteEmptyDateGroups();
  }
  
  public renderNewMessagesByIds(msgIds: number[], scrolledDown = this.scrolledDown) {
    if(!this.scrolledAllDown) { // seems search active or sliced
      this.log('seems search is active, skipping render:', msgIds);
      return;
    }
    
    msgIds.forEach((msgId: number) => {
      let message = this.appMessagesManager.getMessage(msgId);
      
      /////////this.log('got new message to append:', message);
      
      //this.unreaded.push(msgID);
      this.renderMessage(message);
    });
    
    //if(scrolledDown) this.scrollable.scrollTop = this.scrollable.scrollHeight;
    if(this.messagesQueuePromise && scrolledDown) {
      if(this.scrollable.isScrolledDown && !this.scrollable.scrollLocked) {
        //this.log('renderNewMessagesByIDs: messagesQueuePromise before will set prev max');
        this.scrollable.scrollTo(this.scrollable.scrollHeight - 1, 'top', false, true);
      }
      
      this.messagesQueuePromise.then(() => {
        //this.log('renderNewMessagesByIDs: messagesQueuePromise after', this.scrollable.isScrolledDown);
        this.scrollable.scrollTo(this.scrollable.scrollHeight, 'top', true, true);

        /* setTimeout(() => {
          this.log('messagesQueuePromise afterafter:', this.chatInner.childElementCount, this.scrollable.scrollHeight);
        }, 10); */
      });
    }
  }

  public highlightBubble(element: HTMLElement) {
    const datasetKey = 'highlightTimeout';
    if(element.dataset[datasetKey]) {
      clearTimeout(+element.dataset[datasetKey]);
      element.classList.remove('is-highlighted');
      void element.offsetWidth; // reflow
    }

    element.classList.add('is-highlighted');
    element.dataset[datasetKey] = '' + setTimeout(() => {
      element.classList.remove('is-highlighted');
      delete element.dataset[datasetKey];
    }, 2000);
  }

  public getDateContainerByMessage(message: any, reverse: boolean) {
    const date = new Date(message.date * 1000);
    date.setHours(0, 0, 0);
    const dateTimestamp = date.getTime();
    if(!(dateTimestamp in this.dateMessages)) {
      let str = '';
      
      const today = new Date();
      today.setHours(0, 0, 0, 0);
      
      if(today.getTime() == date.getTime()) {
        str = 'Today';
      } else {
        str = months[date.getMonth()] + ' ' + date.getDate();

        if(date.getFullYear() != today.getFullYear()) {
          str += ', ' + date.getFullYear();
        }
      }
      
      const div = document.createElement('div');
      div.className = 'bubble service is-date';
      div.innerHTML = `<div class="bubble__container"><div class="service-msg">${str}</div></div>`;
      ////////this.log('need to render date message', dateTimestamp, str);

      const container = document.createElement('div');
      container.className = 'bubbles-date-group';
      
      this.dateMessages[dateTimestamp] = {
        div,
        container,
        firstTimestamp: date.getTime()
      };

      container.append(div);

      if(reverse) {
        this.chatInner.prepend(container);
      } else {
        this.chatInner.append(container);
      }

      this.stickyIntersector.observeStickyHeaderChanges(container);
    }

    return this.dateMessages[dateTimestamp];
  }

  public destroy() {
    this.chat.log.error('Bubbles destroying');

    this.scrollable.onScrolledTop = this.scrollable.onScrolledBottom = this.scrollable.onAdditionalScroll = null;

    this.listenerSetter.removeAll();

    this.lazyLoadQueue.clear();
    this.unreadedObserver.disconnect();
    this.stickyIntersector.disconnect();

    delete this.lazyLoadQueue;
    delete this.unreadedObserver;
    delete this.stickyIntersector;
  }

  public cleanup(bubblesToo = false) {
    ////console.time('appImManager cleanup');
    this.scrolledAll = false;
    this.scrolledAllDown = false;

    if(TEST_SCROLL !== undefined) {
      TEST_SCROLL = TEST_SCROLL_TIMES;
    }

    this.bubbles = {};
    this.dateMessages = {};
    this.bubbleGroups.cleanup();
    this.unreadOut.clear();
    this.needUpdate.length = 0;
    //this.lazyLoadQueue.clear();
    
    //this.chatInputC.replyElements.cancelBtn.click();

    // clear messages
    if(bubblesToo) {
      this.scrollable.container.innerHTML = '';
    }

    this.firstUnreadBubble = null;
    this.attachedUnreadBubble = false;

    this.messagesQueue.length = 0;
    this.messagesQueuePromise = null;

    this.getHistoryTopPromise = this.getHistoryBottomPromise = undefined;

    this.stickyIntersector.disconnect();
    
    this.unreadedObserver.disconnect();
    this.unreaded.length = 0;

    this.loadedTopTimes = this.loadedBottomTimes = 0;

    this.cleanupObj.cleaned = true;
    this.cleanupObj = {cleaned: false};

    ////console.timeEnd('appImManager cleanup');
  }

  public setPeer(peerId: number, lastMsgId?: number): {cached?: boolean, promise: Chat['setPeerPromise']} {
    //console.time('appImManager setPeer');
    //console.time('appImManager setPeer pre promise');
    ////console.time('appImManager: pre render start');
    if(peerId == 0) {
      this.cleanup(true);
      this.peerId = 0;
      return null;
    }

    const samePeer = this.peerId == peerId;

    const dialog = this.appMessagesManager.getDialogByPeerId(peerId)[0] || null;
    let topMessage = lastMsgId <= 0 ? lastMsgId : dialog?.top_message ?? 0;
    const isTarget = lastMsgId !== undefined;

    if(!isTarget && dialog) {
      if(dialog.unread_count && !samePeer) {
        lastMsgId = dialog.read_inbox_max_id;
      } else {
        lastMsgId = dialog.top_message;
        //lastMsgID = topMessage;
      }
    }

    const isJump = lastMsgId != topMessage;
    
    if(samePeer) {
      const mounted = this.getMountedBubble(lastMsgId);
      if(mounted) {
        if(isTarget) {
          this.scrollable.scrollIntoView(mounted.bubble);
          this.highlightBubble(mounted.bubble);
          this.chat.setListenerResult('setPeer', lastMsgId, false);
        } else if(dialog && !isJump) {
          //this.log('will scroll down', this.scroll.scrollTop, this.scroll.scrollHeight);
          this.scroll.scrollTop = this.scroll.scrollHeight;
          this.chat.setListenerResult('setPeer', lastMsgId, true);
        }
        
        return null;
      }
    } else {
      if(this.peerId) { // * set new queue id if new peer (setting not from 0)
        this.lazyLoadQueue.queueId = ++queueId;
        this.chat.apiManager.setQueueId(this.chat.bubbles.lazyLoadQueue.queueId);
      }

      this.peerId = peerId;
      this.replyFollowHistory.length = 0;
    }

    this.log('setPeer peerId:', this.peerId, dialog, lastMsgId, topMessage);

    // add last message, bc in getHistory will load < max_id
    const additionMsgId = isJump ? 0 : topMessage;

    /* this.setPeerPromise = null;
    this.preloader.detach();
    return true; */

    //////appSidebarRight.toggleSidebar(true);

    let maxBubbleId = 0;
    if(samePeer) {
      let el = getElementByPoint(this.chat.bubbles.scrollable.container, 'bottom');
      //this.chat.log('[PM]: setCorrectIndex: get last element perf:', performance.now() - perf, el);
      if(el) {
        el = findUpClassName(el, 'bubble');
        if(el) { // TODO: а что делать, если id будет -1, -2, -3?
          maxBubbleId = +el.dataset.mid;
        }
      }

      if(maxBubbleId <= 0) {
        maxBubbleId = Math.max(...Object.keys(this.bubbles).map(mid => +mid));
      }
    }

    const oldChatInner = this.chatInner;
    this.cleanup();
    this.chatInner = document.createElement('div');
    this.chatInner.className = oldChatInner.className;
    this.chatInner.classList.add('disable-hover', 'is-scrolling');

    if(!samePeer) {
      this.lazyLoadQueue.clear();
    }

    this.lazyLoadQueue.lock();

    const {promise, cached} = this.getHistory(lastMsgId, true, isJump, additionMsgId);

    // clear 
    if(!cached) {
      this.scrollable.container.innerHTML = '';
      //oldChatInner.remove();

      if(!samePeer) {
        this.chat.finishPeerChange(isTarget, isJump, lastMsgId);
      }

      this.preloader.attach(this.bubblesContainer);
    }

    //console.timeEnd('appImManager setPeer pre promise');
    
    animationIntersector.lockGroup(CHAT_ANIMATION_GROUP);
    const setPeerPromise = promise.then(() => {
      ////this.log('setPeer removing preloader');

      if(cached) {
        if(!samePeer) {
          this.chat.finishPeerChange(isTarget, isJump, lastMsgId); // * костыль
        }

        this.scrollable.container.innerHTML = '';
        //oldChatInner.remove();
      } else {
        this.preloader.detach();
      }

      this.scrollable.container.append(this.chatInner);
      animationIntersector.unlockGroup(CHAT_ANIMATION_GROUP);
      animationIntersector.checkAnimations(false, CHAT_ANIMATION_GROUP/* , true */);
      //this.scrollable.attachSentinels();
      //this.scrollable.container.insertBefore(this.chatInner, this.scrollable.container.lastElementChild);

      this.lazyLoadQueue.unlock();

      //if(dialog && lastMsgID && lastMsgID != topMessage && (this.bubbles[lastMsgID] || this.firstUnreadBubble)) {
      if(dialog && (isTarget || isJump)) {
        if(this.scrollable.scrollLocked) {
          clearTimeout(this.scrollable.scrollLocked);
          this.scrollable.scrollLocked = 0;
        }
        
        const fromUp = maxBubbleId > 0 && (maxBubbleId < lastMsgId || lastMsgId < 0);
        const forwardingUnread = dialog.read_inbox_max_id == lastMsgId && !isTarget;
        if(!fromUp && (samePeer || forwardingUnread)) {
          this.scrollable.scrollTop = this.scrollable.scrollHeight;
        } else if(fromUp/*  && (samePeer || forwardingUnread) */) {
          this.scrollable.scrollTop = 0;
        }

        const mountedByLastMsgId = this.getMountedBubble(lastMsgId);
        let bubble: HTMLElement = (forwardingUnread && this.firstUnreadBubble) || mountedByLastMsgId?.bubble;
        if(!bubble?.parentElement) {
          bubble = this.findNextMountedBubbleByMsgId(lastMsgId);
        }
        
        // ! sometimes there can be no bubble
        if(bubble) {
          this.scrollable.scrollIntoView(bubble, samePeer/* , fromUp */);
          if(!forwardingUnread) {
            this.highlightBubble(bubble);
          }
        }
      } else {
        this.scrollable.scrollTop = this.scrollable.scrollHeight;
      }

      this.chat.setListenerResult('setPeer', lastMsgId, !isJump);

      // warning
      if(!lastMsgId || this.bubbles[topMessage] || lastMsgId == topMessage) {
        this.scrolledAllDown = true;
      }

      this.log('scrolledAllDown:', this.scrolledAllDown);

      //if(!this.unreaded.length && dialog) { // lol
      if(this.scrolledAllDown && dialog) { // lol
        this.appMessagesManager.readHistory(peerId, dialog.top_message);
      }

      if(dialog?.pFlags?.unread_mark) {
        this.appMessagesManager.markDialogUnread(peerId, true);
      }

      this.chatInner.classList.remove('disable-hover', 'is-scrolling'); // warning, performance!

      //console.timeEnd('appImManager setPeer');
    }).catch(err => {
      this.log.error('getHistory promise error:', err);
      this.preloader.detach();
      throw err;
    });

    return {cached, promise: setPeerPromise};
  }

  public finishPeerChange() {
    let peerId = this.peerId;

    //this.topbar.setPeer(peerId);

    const isAnyGroup = this.appPeersManager.isAnyGroup(peerId);
    const isChannel = this.appPeersManager.isChannel(peerId);
    
    const canWrite = this.appMessagesManager.canWriteToPeer(peerId);
    
    this.chatInner.classList.toggle('has-rights', canWrite);
    this.bubblesContainer.classList.toggle('is-chat-input-hidden', !canWrite);

    this.chatInner.classList.toggle('is-chat', isAnyGroup || peerId == rootScope.myId);
    this.chatInner.classList.toggle('is-channel', isChannel);
  }

  public renderMessagesQueue(message: any, bubble: HTMLDivElement, reverse: boolean) {
    /* let dateMessage = this.getDateContainerByMessage(message, reverse);
    if(reverse) dateMessage.container.insertBefore(bubble, dateMessage.div.nextSibling);
    else dateMessage.container.append(bubble);
    return; */

    //this.log('renderMessagesQueue');

    let promises: Promise<any>[] = [];
    (Array.from(bubble.querySelectorAll('img, video')) as HTMLImageElement[]).forEach(el => {
      if(el instanceof HTMLVideoElement) {
        if(!el.src) {
          //this.log.warn('no source', el, source, 'src', source.src);
          return;
        } else if(el.readyState >= 4) return;
      } else if(el.complete || !el.src) return;

      let promise = new Promise((resolve, reject) => {
        let r: () => boolean;
        let onLoad = () => {
          clearTimeout(timeout);
          resolve();

          // lol
          el.removeEventListener(el instanceof HTMLVideoElement ? 'canplay' : 'load', onLoad);
        };

        if(el instanceof HTMLVideoElement) {
          el.addEventListener('canplay', onLoad);
          r = () => el.readyState >= 1;
        } else {
          el.addEventListener('load', onLoad);
          r = () => el.complete;
        }

        // for safari
        let c = () => r() ? onLoad() : window.requestAnimationFrame(c);
        window.requestAnimationFrame(c);

        let timeout = setTimeout(() => {
          // @ts-ignore
          //this.log.error('did not called', el, el.parentElement, el.complete, el.readyState, src);
          resolve();
        }, 1500);
      });

      promises.push(promise);
    });

    this.messagesQueue.push({message, bubble, reverse, promises});

    if(!this.messagesQueuePromise) {
      this.messagesQueuePromise = new Promise((resolve, reject) => {
        setTimeout(() => {
          const chatInner = this.chatInner;
          const queue = this.messagesQueue.slice();
          this.messagesQueue.length = 0;

          const promises = queue.reduce((acc, {promises}) => acc.concat(promises), []);

          // * это нужно для того, чтобы если захочет подгрузить reply или какое-либо сообщение, то скролл не прервался
          if(this.scrollable.scrollLocked) {
            promises.push(this.scrollable.scrollLockedPromise);
          }

          //this.log('promises to call', promises, queue);
          Promise.all(promises).then(() => {
            if(this.chatInner != chatInner) {
              //this.log.warn('chatInner changed!', this.chatInner, chatInner);
              return reject('chatInner changed!');
            }

            if(this.messagesQueueOnRender) {
              this.messagesQueueOnRender();
            }

            queue.forEach(({message, bubble, reverse}) => {
              const dateMessage = this.getDateContainerByMessage(message, reverse);
              if(reverse) {
                dateMessage.container.insertBefore(bubble, dateMessage.div.nextSibling);
              } else {
                dateMessage.container.append(bubble);
              }
            });

            //setTimeout(() => {
              resolve();
            //}, 500);
            this.messagesQueuePromise = null;
          }, reject);
        }, 0);
      });
    }
  }

  // * will change .cleaned in cleanup() and new instance will be created
  public getMiddleware() {
    const cleanupObj = this.cleanupObj;
    return () => {
      return !cleanupObj.cleaned;
    };
  }
  
  // reverse means top
  public renderMessage(message: any, reverse = false, multipleRender = false, bubble: HTMLDivElement = null, updatePosition = true) {
    this.log.debug('message to render:', message);
    //return;
    const albumMustBeRenderedFull = this.chat.type == 'chat';
    if(message.deleted) return;
    else if(message.grouped_id && albumMustBeRenderedFull) { // will render only last album's message
      const storage = this.appMessagesManager.groupedMessagesStorage[message.grouped_id];
      const maxId = Math.max(...Object.keys(storage).map(i => +i));
      if(message.mid < maxId) {
        return;
      }
    }
    
    const peerId = this.peerId;
    const our = message.fromId == rootScope.myId; // * can't use 'message.pFlags.out' here because this check will be used to define side of message (left-right)
    
    const messageDiv = document.createElement('div');
    messageDiv.classList.add('message');
    
    //messageDiv.innerText = message.message;

    let bubbleContainer: HTMLDivElement;
    
    // bubble
    if(!bubble) {
      bubbleContainer = document.createElement('div');
      bubbleContainer.classList.add('bubble__container');
      
      bubble = document.createElement('div');
      bubble.classList.add('bubble');
      bubble.appendChild(bubbleContainer);

      if(!our && !message.pFlags.out) {
        //this.log('not our message', message, message.pFlags.unread);
        if(message.pFlags.unread) {
          this.unreadedObserver.observe(bubble); 
          if(!this.unreaded.indexOf(message.mid)) {
            this.unreaded.push(message.mid);
          }
        }
      }
    } else {
      const save = ['is-highlighted'];
      const wasClassNames = bubble.className.split(' ');
      const classNames = ['bubble'].concat(save.filter(c => wasClassNames.includes(c)));
      bubble.className = classNames.join(' ');

      bubbleContainer = bubble.lastElementChild as HTMLDivElement;
      bubbleContainer.innerHTML = '';
      //bubbleContainer.style.marginBottom = '';
      bubbleContainer.style.cssText = '';

      if(bubble == this.firstUnreadBubble) {
        bubble.classList.add('is-first-unread');
      }

      // * Нужно очистить прошлую информацию, полезно если удалить последний элемент из альбома в ПОСЛЕДНЕМ БАББЛЕ ГРУППЫ (видно по аватару)
      const originalMid = +bubble.dataset.mid;
      if(+message.mid != originalMid) {
        this.bubbleGroups.removeBubble(bubble, originalMid);

        if(!updatePosition) {
          this.bubbleGroups.addBubble(bubble, message, reverse);
        }
      }

      delete this.bubbles[originalMid];
      //bubble.innerHTML = '';
    }

    // ! reset due to album edit or delete item
    this.bubbles[+message.mid] = bubble;
    bubble.dataset.mid = message.mid;

    if(this.chat.selection.isSelecting) {
      this.chat.selection.toggleBubbleCheckbox(bubble, true);
    }

    if(message._ == 'messageService') {
      let action = message.action;
      let _ = action._;
      if(IGNORE_ACTIONS.includes(_) || (langPack.hasOwnProperty(_) && !langPack[_])) {
        return bubble;
      }

      bubble.className = 'bubble service';

      bubbleContainer.innerHTML = `<div class="service-msg">${message.rReply}</div>`;

      if(updatePosition) {
        this.renderMessagesQueue(message, bubble, reverse);
      }

      return bubble;
    }

    let messageMedia = message.media;

    let messageMessage: string, totalEntities: any[];
    if(messageMedia?.document && !['video', 'gif'].includes(messageMedia.document.type)) {
      // * just filter these cases for documents caption
    } else if(message.grouped_id && albumMustBeRenderedFull) {
      const t = this.appMessagesManager.getAlbumText(message.grouped_id);
      messageMessage = t.message;
      totalEntities = t.totalEntities;
    } else if(messageMedia?.document?.type != 'sticker') {
      messageMessage = message.message;
      totalEntities = message.totalEntities;
    }
    
    let richText = RichTextProcessor.wrapRichText(messageMessage, {
      entities: totalEntities
    });
    
    if(totalEntities && !messageMedia) {
      let emojiEntities = totalEntities.filter((e: any) => e._ == 'messageEntityEmoji');
      let strLength = messageMessage.length;
      let emojiStrLength = emojiEntities.reduce((acc: number, curr: any) => acc + curr.length, 0);
      
      if(emojiStrLength == strLength && emojiEntities.length <= 3) {
        let sticker = this.appStickersManager.getAnimatedEmojiSticker(messageMessage);
        if(emojiEntities.length == 1 && !messageMedia && sticker) {
          messageMedia = {
            _: 'messageMediaDocument',
            document: sticker
          };
        } else {
          let attachmentDiv = document.createElement('div');
          attachmentDiv.classList.add('attachment');
          
          attachmentDiv.innerHTML = richText;
          
          bubble.classList.add('emoji-' + emojiEntities.length + 'x');
          
          bubbleContainer.append(attachmentDiv);
        }

        bubble.classList.add('is-message-empty', 'emoji-big');
      } else {
        messageDiv.innerHTML = richText;
      }
      
      /* if(strLength == emojiStrLength) {
        messageDiv.classList.add('emoji-only');
        messageDiv.classList.add('message-empty');
      } */
    } else {
      messageDiv.innerHTML = richText;
    }
    
    const timeSpan = MessageRender.setTime(message, bubble, bubbleContainer, messageDiv);
    bubbleContainer.prepend(messageDiv);
    //bubble.prepend(timeSpan, messageDiv); // that's bad

    if(message.reply_markup && message.reply_markup._ == 'replyInlineMarkup' && message.reply_markup.rows && message.reply_markup.rows.length) {
      const rows = message.reply_markup.rows;

      const containerDiv = document.createElement('div');
      containerDiv.classList.add('reply-markup');
      rows.forEach((row: any) => {
        const buttons = row.buttons;
        if(!buttons || !buttons.length) return;

        const rowDiv = document.createElement('div');
        rowDiv.classList.add('reply-markup-row');

        buttons.forEach((button: any) => {
          const text = RichTextProcessor.wrapRichText(button.text, {noLinks: true, noLinebreaks: true});

          let buttonEl: HTMLButtonElement | HTMLAnchorElement;
          
          switch(button._) {
            case 'keyboardButtonUrl': {
              const from = this.appUsersManager.getUser(message.fromId);
              const unsafe = !(from && from.pFlags && from.pFlags.verified);
              const url = RichTextProcessor.wrapUrl(button.url, unsafe);
              buttonEl = document.createElement('a');
              buttonEl.href = url;
              buttonEl.rel = 'noopener noreferrer';
              buttonEl.target = '_blank';
              buttonEl.classList.add('is-link', 'tgico');

              break;
            }

            default: {
              buttonEl = document.createElement('button');
              break;
            }
          }

          buttonEl.classList.add('reply-markup-button', 'rp');
          buttonEl.innerHTML = text;

          ripple(buttonEl);

          rowDiv.append(buttonEl);
        });

        containerDiv.append(rowDiv);
      });

      attachClickEvent(containerDiv, (e) => {
        cancelEvent(e);
        let target = e.target as HTMLElement;

        if(!target.classList.contains('reply-markup-button')) target = findUpClassName(target, 'reply-markup-button');
        if(!target) return;

        const column = whichChild(target);
        const row = rows[whichChild(target.parentElement)];

        if(!row.buttons || !row.buttons[column]) {
          this.log.warn('no such button', row, column, message);
          return;
        }

        const button = row.buttons[column];
        this.appInlineBotsManager.callbackButtonClick(message.mid, button);
      });

      const offset = rows.length * 45 + 'px';
      bubbleContainer.style.marginBottom = offset;
      containerDiv.style.bottom = '-' + offset;

      bubbleContainer.prepend(containerDiv);
    }
    
    if(our) {
      if(message.pFlags.unread || message.mid < 0) this.unreadOut.add(message.mid); // message.mid < 0 added 11.02.2020
      let status = '';
      if(message.mid < 0) status = 'is-sending';
      else status = message.pFlags.unread ? 'is-sent' : 'is-read';
      bubble.classList.add(status);
    }

    const isOut = our && (!message.fwd_from || this.peerId != rootScope.myId);
    let nameContainer = bubbleContainer;
    
    // media
    if(messageMedia/*  && messageMedia._ == 'messageMediaPhoto' */) {
      let attachmentDiv = document.createElement('div');
      attachmentDiv.classList.add('attachment');
      
      if(!messageMessage) {
        bubble.classList.add('is-message-empty');
      }
      
      let processingWebPage = false;
      
      switch(messageMedia._) {
        case 'messageMediaPending': {
          let pending = messageMedia;
          let preloader = pending.preloader as ProgressivePreloader;
          
          switch(pending.type) {
            case 'album': {
              this.log('will wrap pending album');

              bubble.classList.add('hide-name', 'photo', 'is-album', 'is-grouped');
              wrapAlbum({
                groupId: '' + message.id, 
                attachmentDiv,
                uploading: true,
                isOut: true
              });

              break;
            }

            case 'photo': {
              //if(pending.size < 5e6) {
                const photo = this.appPhotosManager.getPhoto(message.id);
                //if(photo._ == 'photoEmpty') break;
                this.log('will wrap pending photo:', pending, message, photo);
                const withTail = !isAndroid && !message.message;
                if(withTail) bubble.classList.add('with-media-tail');
                wrapPhoto({
                  photo, message, 
                  container: attachmentDiv, 
                  withTail, 
                  isOut: true, 
                  lazyLoadQueue: this.lazyLoadQueue
                });

                bubble.classList.add('hide-name', 'photo');
              //}

              break;
            }

            case 'video': {
              //if(pending.size < 5e6) {
                let doc = this.appDocsManager.getDoc(message.id);
                //if(doc._ == 'documentEmpty') break;
                this.log('will wrap pending video:', pending, message, doc);
                const withTail = !isAndroid && !isApple && doc.type != 'round' && !message.message;
                if(withTail) bubble.classList.add('with-media-tail');
                wrapVideo({
                  doc, 
                  container: attachmentDiv, 
                  message, 
                  boxWidth: mediaSizes.active.regular.width,
                  boxHeight: mediaSizes.active.regular.height, 
                  withTail, 
                  isOut: isOut,
                  lazyLoadQueue: this.lazyLoadQueue,
                  middleware: null,
                  group: CHAT_ANIMATION_GROUP
                });

                preloader.attach(attachmentDiv, false);
                bubble.classList.add('hide-name', 'video');
              //}
              break;
            }
            
            case 'audio':
            case 'voice':
            case 'document': {
              const newNameContainer = wrapGroupedDocuments({
                albumMustBeRenderedFull,
                message,
                bubble,
                messageDiv
              });
  
              if(newNameContainer) {
                nameContainer = newNameContainer;
              }
              
              if(pending.type == 'voice') {
                bubble.classList.add('bubble-audio');
              }
              
              bubble.classList.remove('is-message-empty');
              messageDiv.classList.add((pending.type || 'document') + '-message');
              processingWebPage = true;
              break;
            }
            
          }
          
          break;
        }
        
        case 'messageMediaPhoto': {
          const photo = messageMedia.photo;
          ////////this.log('messageMediaPhoto', photo);
          
          bubble.classList.add('hide-name', 'photo');
          
          const storage = this.appMessagesManager.groupedMessagesStorage[message.grouped_id];
          if(message.grouped_id && Object.keys(storage).length != 1 && albumMustBeRenderedFull) {
            bubble.classList.add('is-album', 'is-grouped');
            wrapAlbum({
              groupId: message.grouped_id, 
              attachmentDiv,
              middleware: this.getMiddleware(),
              isOut: our,
              lazyLoadQueue: this.lazyLoadQueue
            });
            
            break;
          }
          
          const withTail = !isAndroid && !message.message;
          if(withTail) bubble.classList.add('with-media-tail');
          wrapPhoto({
            photo, 
            message,
            container: attachmentDiv,
            withTail, 
            isOut, 
            lazyLoadQueue: this.lazyLoadQueue,
            middleware: this.getMiddleware()
          });

          break;
        }
        
        case 'messageMediaWebPage': {
          processingWebPage = true;
          
          let webpage = messageMedia.webpage;
          ////////this.log('messageMediaWebPage', webpage);
          if(webpage._ == 'webPageEmpty') {
            break;
          } 
          
          bubble.classList.add('webpage');
          
          let box = document.createElement('div');
          box.classList.add('web');
          
          let quote = document.createElement('div');
          quote.classList.add('quote');

          let previewResizer: HTMLDivElement, preview: HTMLDivElement;
          if(webpage.photo || webpage.document) {
            previewResizer = document.createElement('div');
            previewResizer.classList.add('preview-resizer');
            preview = document.createElement('div');
            preview.classList.add('preview');
            previewResizer.append(preview);
          }
          
          let doc: any = null;
          if(webpage.document) {
            doc = webpage.document;
            
            if(doc.type == 'gif' || doc.type == 'video') {
              //if(doc.size <= 20e6) {
              bubble.classList.add('video');
              wrapVideo({
                doc, 
                container: preview, 
                message, 
                boxWidth: mediaSizes.active.webpage.width,
                boxHeight: mediaSizes.active.webpage.height,
                lazyLoadQueue: this.lazyLoadQueue,
                middleware: this.getMiddleware(),
                isOut,
                group: CHAT_ANIMATION_GROUP
              });
              //}
            } else {
              const docDiv = wrapDocument(doc, false, false, message.mid);
              preview.append(docDiv);
              preview.classList.add('preview-with-document');
              //messageDiv.classList.add((webpage.type || 'document') + '-message');
              //doc = null;
            }
          }
          
          if(previewResizer) {
            quote.append(previewResizer);
          }
          
          let quoteTextDiv = document.createElement('div');
          quoteTextDiv.classList.add('quote-text');

          if(webpage.site_name) {
            let nameEl = document.createElement('a');
            nameEl.classList.add('name');
            nameEl.setAttribute('target', '_blank');
            nameEl.href = webpage.url || '#';
            nameEl.innerHTML = RichTextProcessor.wrapEmojiText(webpage.site_name);
            quoteTextDiv.append(nameEl);
          }

          if(webpage.rTitle) {
            let titleDiv = document.createElement('div');
            titleDiv.classList.add('title');
            titleDiv.innerHTML = webpage.rTitle;
            quoteTextDiv.append(titleDiv);
          }

          if(webpage.rDescription) {
            let textDiv = document.createElement('div');
            textDiv.classList.add('text');
            textDiv.innerHTML = webpage.rDescription;
            quoteTextDiv.append(textDiv);
          }

          quote.append(quoteTextDiv);

          if(webpage.photo && !doc) {
            bubble.classList.add('photo');

            const size = webpage.photo.sizes[webpage.photo.sizes.length - 1];
            if(size.w == size.h && quoteTextDiv.childElementCount) {
              bubble.classList.add('is-square-photo');
            } else if(size.h > size.w) {
              bubble.classList.add('is-vertical-photo');
            }

            wrapPhoto({
              photo: webpage.photo, 
              message, 
              container: preview, 
              boxWidth: mediaSizes.active.webpage.width, 
              boxHeight: mediaSizes.active.webpage.height, 
              isOut, 
              lazyLoadQueue: this.lazyLoadQueue, 
              middleware: this.getMiddleware()
            });
          }
          
          box.append(quote);
          
          //bubble.prepend(box);
          bubbleContainer.prepend(timeSpan, box);
          
          //this.log('night running', bubble.scrollHeight);
          
          break;
        }
        
        case 'messageMediaDocument': {
          let doc = messageMedia.document;

          //this.log('messageMediaDocument', doc, bubble);
          
          if(doc.sticker/*  && doc.size <= 1e6 */) {
            bubble.classList.add('sticker');
            
            if(doc.animated) {
              bubble.classList.add('sticker-animated');
            }
            
            let size = bubble.classList.contains('emoji-big') ? 140 : 200;
            this.appPhotosManager.setAttachmentSize(doc, attachmentDiv, size, size, true);
            //let preloader = new ProgressivePreloader(attachmentDiv, false);
            bubbleContainer.style.height = attachmentDiv.style.height;
            bubbleContainer.style.width = attachmentDiv.style.width;
            //appPhotosManager.setAttachmentSize(doc, bubble);
            wrapSticker({
              doc, 
              div: attachmentDiv,
              middleware: this.getMiddleware(),
              lazyLoadQueue: this.lazyLoadQueue,
              group: CHAT_ANIMATION_GROUP,
              //play: !!message.pending || !multipleRender,
              play: true,
              loop: true,
              emoji: bubble.classList.contains('emoji-big') ? messageMessage : undefined,
              withThumb: true
            });

            break;
          } else if(doc.type == 'video' || doc.type == 'gif' || doc.type == 'round'/*  && doc.size <= 20e6 */) {
            //this.log('never get free 2', doc);
            
            bubble.classList.add('hide-name', doc.type == 'round' ? 'round' : 'video');
            const storage = this.appMessagesManager.groupedMessagesStorage[message.grouped_id];
            if(message.grouped_id && Object.keys(storage).length != 1 && albumMustBeRenderedFull) {
              bubble.classList.add('is-album', 'is-grouped');
  
              wrapAlbum({
                groupId: message.grouped_id, 
                attachmentDiv,
                middleware: this.getMiddleware(),
                isOut: our,
                lazyLoadQueue: this.lazyLoadQueue
              });
            } else {
              const withTail = !isAndroid && !isApple && doc.type != 'round' && !message.message;
              if(withTail) bubble.classList.add('with-media-tail');
              wrapVideo({
                doc, 
                container: attachmentDiv, 
                message, 
                boxWidth: mediaSizes.active.regular.width,
                boxHeight: mediaSizes.active.regular.height, 
                withTail, 
                isOut,
                lazyLoadQueue: this.lazyLoadQueue,
                middleware: this.getMiddleware(),
                group: CHAT_ANIMATION_GROUP
              });
            }
            
            break;
          } else {
            const newNameContainer = wrapGroupedDocuments({
              albumMustBeRenderedFull,
              message,
              bubble,
              messageDiv
            });

            if(newNameContainer) {
              nameContainer = newNameContainer;
            }

            bubble.classList.remove('is-message-empty');
            messageDiv.classList.add((doc.type != 'photo' ? doc.type || 'document' : 'document') + '-message');
            processingWebPage = true;
            
            break;
          }

          break;
        }

        case 'messageMediaContact': {
          //this.log('wrapping contact', message);

          const contactDiv = document.createElement('div');
          contactDiv.classList.add('contact');
          contactDiv.dataset.peerId = '' + messageMedia.user_id;

          messageDiv.classList.add('contact-message');
          processingWebPage = true;

          const texts = [];
          if(message.media.first_name) texts.push(RichTextProcessor.wrapEmojiText(message.media.first_name));
          if(message.media.last_name) texts.push(RichTextProcessor.wrapEmojiText(message.media.last_name));

          contactDiv.innerHTML = `
            <div class="contact-details">
              <div class="contact-name">${texts.join(' ')}</div>
              <div class="contact-number">${message.media.phone_number ? '+' + formatPhoneNumber(message.media.phone_number).formatted : 'Unknown phone number'}</div>
            </div>`;

          const avatarElem = new AvatarElement();
          avatarElem.setAttribute('peer', '' + message.media.user_id);
          avatarElem.classList.add('contact-avatar', 'avatar-54');

          contactDiv.prepend(avatarElem);

          bubble.classList.remove('is-message-empty');
          messageDiv.classList.add('contact-message');
          messageDiv.append(contactDiv);

          break;
        }

        case 'messageMediaPoll': {
          bubble.classList.remove('is-message-empty');
          
          const pollElement = wrapPoll(message.media.poll.id, message.mid);
          messageDiv.prepend(pollElement);
          messageDiv.classList.add('poll-message');

          break;
        }
        
        default:
        bubble.classList.remove('is-message-empty');
        messageDiv.innerHTML = 'unrecognized media type: ' + message.media._;
        messageDiv.append(timeSpan);
        this.log.warn('unrecognized media type:', message.media._, message);
        break;
      }
      
      if(!processingWebPage) {
        bubbleContainer.append(attachmentDiv);
      }

      /* if(bubble.classList.contains('is-message-empty') && (bubble.classList.contains('photo') || bubble.classList.contains('video'))) {
        bubble.classList.add('no-tail');

        if(!bubble.classList.contains('with-media-tail')) {
          bubble.classList.add('use-border-radius');
        }
      } */
    }

    let savedFrom = '';
    
    if((this.peerId < 0 && !our) || message.fwd_from || message.reply_to_mid) { // chat
      let title = this.appPeersManager.getPeerTitle(message.fwdFromId || message.fromId);

      const isForwardFromChannel = message.from_id && message.from_id._ == 'peerChannel' && message.fromId == message.fwdFromId;
      
      let isHidden = message.fwd_from && !message.fwd_from.from_id && !message.fwd_from.channel_id;
      if(isHidden) {
        ///////this.log('message to render hidden', message);
        title = RichTextProcessor.wrapEmojiText(message.fwd_from.from_name);
        //title = message.fwd_from.from_name;
        bubble.classList.add('hidden-profile');
      }
      
      //this.log(title);
      
      if((message.fwdFromId || message.fwd_from)) {
        if(this.peerId != rootScope.myId && !isForwardFromChannel) {
          bubble.classList.add('forwarded');
        }
        
        if(message.savedFrom) {
          savedFrom = message.savedFrom;
        }
        
        if(!bubble.classList.contains('sticker')) {
          let nameDiv = document.createElement('div');
          nameDiv.classList.add('name');
          nameDiv.dataset.peerId = message.fwdFromId;

          if(this.peerId == rootScope.myId || isForwardFromChannel) {
            nameDiv.style.color = this.appPeersManager.getPeerColorById(message.fwdFromId, false);
            nameDiv.innerHTML = title;
          } else {
            /* const fromTitle = message.fromId == this.myID || appPeersManager.isBroadcast(message.fwdFromId || message.fromId) ? '' : `<div class="name" data-peer-id="${message.fromId}" style="color: ${appPeersManager.getPeerColorByID(message.fromId, false)};">${appPeersManager.getPeerTitle(message.fromId)}</div>`;
            nameDiv.innerHTML = fromTitle + 'Forwarded from ' + title; */
            nameDiv.innerHTML = 'Forwarded from ' + title;
          }
          
          nameContainer.append(nameDiv);
        }
      } else {
        if(message.reply_to_mid) {
          let originalMessage = this.appMessagesManager.getMessage(message.reply_to_mid);
          let originalPeerTitle = this.appPeersManager.getPeerTitle(originalMessage.fromId || originalMessage.fwdFromId, true) || '';
          
          /////////this.log('message to render reply', originalMessage, originalPeerTitle, bubble, message);
          
          // need to download separately
          if(originalMessage._ == 'messageEmpty') {
            //////////this.log('message to render reply empty, need download', message, message.reply_to_mid);
            this.appMessagesManager.wrapSingleMessage(message.reply_to_mid);
            this.needUpdate.push({replyMid: message.reply_to_mid, mid: message.mid});
            
            originalPeerTitle = 'Loading...';
          }
          
          if(originalMessage.mid) {
            bubble.setAttribute('data-original-mid', originalMessage.mid);
          } else {
            bubble.setAttribute('data-original-mid', message.reply_to_mid);
          }
          
          bubbleContainer.append(wrapReply(originalPeerTitle, originalMessage.message || '', originalMessage));
          bubble.classList.add('is-reply');
        }
        
        if(!bubble.classList.contains('sticker') && (peerId < 0 && peerId != message.fromId)) {
          let nameDiv = document.createElement('div');
          nameDiv.classList.add('name');
          nameDiv.innerHTML = title;
          nameDiv.style.color = this.appPeersManager.getPeerColorById(message.fromId, false);
          nameDiv.dataset.peerId = message.fromId;
          nameContainer.append(nameDiv);
        } else /* if(!message.reply_to_mid) */ {
          bubble.classList.add('hide-name');
        }
      }
      
      if((!our && this.peerId < 0 && (!this.appPeersManager.isChannel(this.peerId) || this.appPeersManager.isMegagroup(this.peerId))) 
        || (this.peerId == rootScope.myId && !message.reply_to_mid)) {
        let avatarElem = new AvatarElement();
        avatarElem.classList.add('user-avatar', 'avatar-40');

        if(!message.fwdFromId && message.fwd_from && message.fwd_from.from_name) {
          avatarElem.setAttribute('peer-title', /* '🔥 FF 🔥' */message.fwd_from.from_name);
        }

        avatarElem.setAttribute('peer', '' + (((message.fwd_from && this.peerId == rootScope.myId) || isForwardFromChannel ? message.fwdFromId : message.fromId) || 0));
        avatarElem.update();
        
        //this.log('exec loadDialogPhoto', message);

        bubbleContainer.append(avatarElem);
      }
    } else {
      bubble.classList.add('hide-name');
    }

    if(this.chat.type == 'pinned') {
      savedFrom = `${this.chat.peerId}_${message.mid}`;
    }

    if(savedFrom) {
      const goto = document.createElement('div');
      goto.classList.add('bubble-beside-button', 'goto-original', 'tgico-next');
      bubbleContainer.append(goto);
      bubble.dataset.savedFrom = savedFrom;
      bubble.classList.add('with-beside-button');
    }
    
    bubble.classList.add(isOut ? 'is-out' : 'is-in');
    if(updatePosition) {
      this.bubbleGroups.addBubble(bubble, message, reverse);

      this.renderMessagesQueue(message, bubble, reverse);
    } else {
      this.bubbleGroups.updateGroupByMessageId(message.mid);
    }

    return bubble;
  }

  public performHistoryResult(history: number[], reverse: boolean, isBackLimit: boolean, additionMsgId?: number) {
    // commented bot getProfile in getHistory!
    if(!history/* .filter((id: number) => id > 0) */.length) {
      if(!isBackLimit) {
        this.scrolledAll = true;
      } else {
        this.scrolledAllDown = true;
      }
    }

    history = history.slice(); // need

    if(additionMsgId) {
      history.unshift(additionMsgId);
    }

    /* if(testScroll && additionMsgID) {
      for(let i = 0; i < 3; ++i) {
        let _history = history.slice();
        setTimeout(() => {
          this.performHistoryResult(_history, reverse, isBackLimit, 0, resetPromises);
        }, 0);
      }
    } */

    let dialog = this.appMessagesManager.getDialogByPeerId(this.peerId)[0];
    if(dialog && dialog.top_message) {
      for(let mid of history) {
        if(mid == dialog.top_message) {
          this.scrolledAllDown = true;
          break;
        }
      }
    }

    //console.time('appImManager render history');

    return new Promise<boolean>((resolve, reject) => {
      //await new Promise((resolve) => setTimeout(resolve, 1e3));

      //this.log('performHistoryResult: will render some messages:', history.length);

      const method = (reverse ? history.shift : history.pop).bind(history);

      //const padding = 10000;
      const realLength = this.scrollable.container.childElementCount;
      let previousScrollHeightMinusTop: number/* , previousScrollHeight: number */;
      if(realLength > 0 && (reverse || isSafari)) { // for safari need set when scrolling bottom too
        this.messagesQueueOnRender = () => {
          const {scrollTop, scrollHeight} = this.scrollable;

          //previousScrollHeight = scrollHeight;
          //previousScrollHeight = scrollHeight + padding;
          previousScrollHeightMinusTop = reverse ? scrollHeight - scrollTop : scrollTop;

          //this.chatInner.style.paddingTop = padding + 'px';
          /* if(reverse) {
            previousScrollHeightMinusTop = this.scrollable.scrollHeight - scrollTop;
          } else {
            previousScrollHeightMinusTop = scrollTop;
          } */

          //this.log('performHistoryResult: messagesQueueOnRender, scrollTop:', scrollTop, scrollHeight, previousScrollHeightMinusTop);
          this.messagesQueueOnRender = undefined;
        };
      }

      while(history.length) {
        let message = this.appMessagesManager.getMessage(method());
        this.renderMessage(message, reverse, true);
      }

      (this.messagesQueuePromise || Promise.resolve())
      //.then(() => new Promise(resolve => setTimeout(resolve, 100)))
      .then(() => {
        if(previousScrollHeightMinusTop !== undefined) {
          /* const scrollHeight = this.scrollable.scrollHeight;
          const addedHeight = scrollHeight - previousScrollHeight;

          this.chatInner.style.paddingTop = (10000 - addedHeight) + 'px'; */
          /* const scrollHeight = this.scrollable.scrollHeight;
          const addedHeight = scrollHeight - previousScrollHeight;

          this.chatInner.style.paddingTop = (padding - addedHeight) + 'px';

          //const newScrollTop = reverse ? scrollHeight - previousScrollHeightMinusTop : previousScrollHeightMinusTop;
          const newScrollTop = reverse ? scrollHeight - addedHeight - previousScrollHeightMinusTop : previousScrollHeightMinusTop;
          this.log('performHistoryResult: will set scrollTop', 
            previousScrollHeightMinusTop, this.scrollable.scrollHeight, 
            newScrollTop, this.scrollable.container.clientHeight); */
          //const newScrollTop = reverse ? scrollHeight - previousScrollHeightMinusTop : previousScrollHeightMinusTop;
          const newScrollTop = reverse ? this.scrollable.scrollHeight - previousScrollHeightMinusTop : previousScrollHeightMinusTop;

          // touchSupport for safari iOS
          isTouchSupported && isApple && (this.scrollable.container.style.overflow = 'hidden');
          this.scrollable.scrollTop = newScrollTop;
          //this.scrollable.scrollTop = this.scrollable.scrollHeight;
          isTouchSupported && isApple && (this.scrollable.container.style.overflow = '');

          //this.log('performHistoryResult: have set up scrollTop:', newScrollTop, this.scrollable.scrollTop);
        }

        resolve(true);
      }, reject);
    }).then(() => {
      //console.timeEnd('appImManager render history');

      return true;
    });
  }

  onDatePick = (timestamp: number) => {
    const peerId = this.peerId;
    this.appMessagesManager.requestHistory(peerId, 0, 2, -1, timestamp).then(history => {
      if(!history?.messages?.length) {
        this.log.error('no history!');
        return;
      } else if(this.peerId != peerId) {
        return;
      }

      this.chat.setPeer(this.peerId, history.messages[0].mid);
      //console.log('got history date:', history);
    });
  };

  public requestHistory(maxId: number, loadCount: number, backLimit: number) {
    //const middleware = this.getMiddleware();
    if(this.chat.type == 'chat') {
      return this.appMessagesManager.getHistory(this.peerId, maxId, loadCount, backLimit);
    } else if(this.chat.type == 'pinned') {
      const promise = this.appMessagesManager.getSearch(this.peerId, '', {_: 'inputMessagesFilterPinned'}, maxId, loadCount, 0, backLimit);

      /* if(maxId) {
        promise.then(result => {
          if(!middleware()) return;
  
          this.messagesCount = result.count;
          this.chat.topbar.setTitle();  
        });
      } */

      return promise;
    }
  }

  /**
   * Load and render history
   * @param maxId max message id
   * @param reverse 'true' means up
   * @param isBackLimit is search
   * @param additionMsgId for the last message
   * @param justLoad do not render
   */
  public getHistory(maxId = 0, reverse = false, isBackLimit = false, additionMsgId = 0, justLoad = false): {cached: boolean, promise: Promise<boolean>} {
    const peerId = this.peerId;

    //console.time('appImManager call getHistory');
    const pageCount = this.appPhotosManager.windowH / 38/*  * 1.25 */ | 0;
    //const loadCount = Object.keys(this.bubbles).length > 0 ? 50 : pageCount;
    const realLoadCount = Object.keys(this.bubbles).length > 0 || additionMsgId ? Math.max(40, pageCount) : pageCount;//const realLoadCount = 50;
    let loadCount = realLoadCount;
    
    /* if(TEST_SCROLL) {
      //loadCount = 1;
      if(Object.keys(this.bubbles).length > 0)
      return {cached: false, promise: Promise.resolve(true)};
    } */
    if(TEST_SCROLL !== undefined) {
      if(TEST_SCROLL) {
        if(Object.keys(this.bubbles).length > 0) {
          --TEST_SCROLL;
        }
      } else {
        return {cached: false, promise: Promise.resolve(true)};
      }
    }
    
    ////console.time('render history total');
    
    let backLimit = 0;
    if(isBackLimit) {
      backLimit = loadCount;

      if(!reverse) { // if not jump
        loadCount = 0;
        maxId += 1;
      }
    }

    let additionMsgIds: number[];
    if(additionMsgId && !isBackLimit) {
      const historyStorage = this.appMessagesManager.historiesStorage[peerId];
      if(historyStorage && historyStorage.history.length < loadCount) {
        additionMsgIds = historyStorage.history.slice();

        // * filter last album, because we don't know is this the last item
        for(let i = additionMsgIds.length - 1; i >= 0; --i) {
          const message = this.appMessagesManager.getMessage(additionMsgIds[i]);
          if(message.grouped_id) additionMsgIds.splice(i, 1);
          else break;
        }

        maxId = additionMsgIds[additionMsgIds.length - 1] || maxId;
      }
    }

    /* const result = additionMsgID ? 
      {history: [additionMsgID]} : 
      appMessagesManager.getHistory(this.peerId, maxId, loadCount, backLimit); */
    let result: ReturnType<AppMessagesManager['getHistory']> | {history: number[]} = this.requestHistory(maxId, loadCount, backLimit) as any;
    let resultPromise: Promise<any>;

    //const isFirstMessageRender = !!additionMsgID && result instanceof Promise && !appMessagesManager.getMessage(additionMsgID).grouped_id;
    const isFirstMessageRender = additionMsgIds?.length;
    if(isFirstMessageRender) {
      resultPromise = result as Promise<any>;
      result = {history: additionMsgIds};
      //additionMsgID = 0;
    }

    const processPromise = (result: Promise<HistoryResult>) => {
      const promise = result.then((result) => {
        this.log('getHistory not cached result by maxId:', maxId, reverse, isBackLimit, result, peerId, justLoad);

        if(justLoad) {
          this.scrollable.onScroll(); // нужно делать из-за ранней прогрузки
          return true;
        }
        //console.timeEnd('appImManager call getHistory');
        
        if(this.peerId != peerId || (this.getHistoryTopPromise != promise && this.getHistoryBottomPromise != promise)) {
          this.log.warn('peer changed');
          ////console.timeEnd('render history total');
          return Promise.reject();
        }
        
        ////console.timeEnd('render history total');
        
        return this.performHistoryResult(result.history || [], reverse, isBackLimit, !isFirstMessageRender && additionMsgId);
      }, (err) => {
        this.log.error('getHistory error:', err);
        return false;
      });
      
      return promise;
    };

    let promise: Promise<boolean>, cached: boolean;
    if(result instanceof Promise) {
      cached = false;
      promise = processPromise(result);
    } else if(justLoad) {
      return null;
    } else {
      cached = true;
      this.log('getHistory cached result by maxId:', maxId, reverse, isBackLimit, result, peerId, justLoad);
      promise = this.performHistoryResult(result.history || [], reverse, isBackLimit, !isFirstMessageRender && additionMsgId);
      //return (reverse ? this.getHistoryTopPromise = promise : this.getHistoryBottomPromise = promise);
      //return this.performHistoryResult(result.history || [], reverse, isBackLimit, additionMsgID, true);
    }

    const waitPromise = isFirstMessageRender ? processPromise(resultPromise) : promise;

    if(isFirstMessageRender) {
      waitPromise.then(() => {
        const mids = getObjectKeysAndSort(this.bubbles, 'desc').filter(mid => !additionMsgIds.includes(mid));
        mids.forEach((mid, idx) => {
          const bubble = this.bubbles[mid];
  
          //if(idx || isSafari) {
            // ! 0.1 = 1ms задержка для Safari, без этого первое сообщение над самым нижним может появиться позже другого с animation-delay, LOL !
            bubble.style.animationDelay = ((idx || 0.1) * 10) + 'ms';
          //}

          bubble.classList.add('zoom-fade');
          bubble.addEventListener('animationend', () => {
            bubble.style.animationDelay = '';
            bubble.classList.remove('zoom-fade');
          }, {once: true});
          //this.log('supa', bubble);
        });

        setTimeout(() => {
          this.loadMoreHistory(true, true);
        }, 0);
      });
    }

    (reverse ? this.getHistoryTopPromise = waitPromise : this.getHistoryBottomPromise = waitPromise);
    waitPromise.finally(() => {
      (reverse ? this.getHistoryTopPromise = undefined : this.getHistoryBottomPromise = undefined);
    });

    if(justLoad) {
      return null;
    }

    /* false &&  */!isFirstMessageRender && promise.then(() => {
      if(reverse) {
        this.loadedTopTimes++;
        this.loadedBottomTimes = Math.max(0, --this.loadedBottomTimes);
      } else {
        this.loadedBottomTimes++;
        this.loadedTopTimes = Math.max(0, --this.loadedTopTimes);
      }

      let ids: number[];
      if((reverse && this.loadedTopTimes > 2) || (!reverse && this.loadedBottomTimes > 2)) {
        ids = getObjectKeysAndSort(this.bubbles);
      }

      //let removeCount = loadCount / 2;
      const safeCount = realLoadCount * 2; // cause i've been runningrunningrunning all day
      this.log('getHistory: slice loadedTimes:', reverse, pageCount, this.loadedTopTimes, this.loadedBottomTimes, ids?.length, safeCount);
      if(ids && ids.length > safeCount) {
        if(reverse) {
          //ids = ids.slice(-removeCount);
          //ids = ids.slice(removeCount * 2);
          ids = ids.slice(safeCount);
          this.scrolledAllDown = false;

          this.log('getHistory: slice bottom messages:', ids.length, loadCount);
          //this.getHistoryBottomPromise = undefined; // !WARNING, это нужно для обратной загрузки истории, если запрос словил флуд
        } else {
          //ids = ids.slice(0, removeCount);
          //ids = ids.slice(0, ids.length - (removeCount * 2));
          ids = ids.slice(0, ids.length - safeCount);
          this.scrolledAll = false;

          this.log('getHistory: slice up messages:', ids.length, loadCount);
          //this.getHistoryTopPromise = undefined; // !WARNING, это нужно для обратной загрузки истории, если запрос словил флуд
        }

        this.log('getHistory: will slice ids:', ids, reverse);

        this.deleteMessagesByIds(ids);
      }

      this.setUnreadDelimiter(); // не нашёл места лучше

      // preload more
      //if(!isFirstMessageRender) {
      if(this.chat.type == 'chat') {
        const storage = this.appMessagesManager.historiesStorage[peerId];
        const isMaxIdInHistory = storage.history.indexOf(maxId) !== -1;
        if(isMaxIdInHistory) { // * otherwise it is a search or jump
          setTimeout(() => {
            if(reverse) {
              this.loadMoreHistory(true, true);
            } else {
              this.loadMoreHistory(false, true);
            }
          }, 0);
        }
      }
      //}
    });

    return {cached, promise};
  }

  public setUnreadDelimiter() {
    if(this.attachedUnreadBubble) {
      return;
    }

    let dialog = this.appMessagesManager.getDialogByPeerId(this.peerId)[0];
    if(!dialog?.unread_count) return;

    let maxId = dialog.read_inbox_max_id;
    maxId = Object.keys(this.bubbles).filter(mid => !this.bubbles[mid].classList.contains('is-out')).map(i => +i).sort((a, b) => a - b).find(i => i > maxId);

    if(maxId && this.bubbles[maxId]) {
      let bubble = this.bubbles[maxId];
      if(this.firstUnreadBubble && this.firstUnreadBubble != bubble) {
        this.firstUnreadBubble.classList.remove('is-first-unread');
        this.firstUnreadBubble = null;
      }

      if(maxId != dialog.top_message) {
        bubble.classList.add('is-first-unread');
      }

      this.firstUnreadBubble = bubble;
      this.attachedUnreadBubble = true;
    }
  }

  public deleteEmptyDateGroups() {
    for(let i in this.dateMessages) {
      let dateMessage = this.dateMessages[i];

      if(dateMessage.container.childElementCount == 2) { // only date div + sentinel div
        dateMessage.container.remove();
        this.stickyIntersector.unobserve(dateMessage.container, dateMessage.div);
        delete this.dateMessages[i];
      }
    }
  }
}