MoA - Thread totals

// ==UserScript==
// @name         MoA - Thread totals
// @description  Count posters and comments in MoA
// @namespace    https://www.greasespot.net/
// @author       aletsan
// @version      1.0
// @match        https://www.moonofalabama.org/*
// @grant        none
// ==/UserScript==

  // A script to display to top posters and their posts count in a small footer on the current page
	// It adds all the posts of every poster in the page, sorts it by count descending and name ascending and displays all that have more than 1 post in a footer
	// It works only for the displayed page and not for the total posts of a thread, if you need total number you must go through all pages and do the sum by hand
	// The code needed for adding the count going up/down the comments pages of a thread is a bit much and there are things that may not work correctly slowing down of even breaking the code
	// You can change the footer info line properties to your liking and have it displayed as you like

(function(){
  'use strict';

  // the script will run only if we are in a page that has comments
  if(document.getElementsByClassName("comments-body").length>0)
  {
    // get the list of comments in page
    const commentslist = document.getElementsByClassName("comments-body");

    // create array for usernames and posts count
    let postscountarray = [];

    // process the comments list
    for(let comment of commentslist)
    {
      // get the poster info line from comment
    	let posterinfo = comment.getElementsByClassName('posted')[0];

      // extract username from poster info line and remove before/after whitespaces
      let username1 = posterinfo.textContent.split('|',1);
      let username2 = username1[0].split(':');
      let usernamefinal = username2[1].trim();
      // adding poster in count array:
      // search if poster's name is already in the array
      let searchedid = postscountarray.map(e => e.name).indexOf(usernamefinal);
      // if he does not exists then it's his 1st post so just add his name and make his count 1
      if (searchedid == -1)
      {
        let postscountentry = {name:usernamefinal,count:1};
        postscountarray.push(postscountentry);
      }
      // if he already exist then it's another post from him so go to his entry and increase his count by 1
      else
      {
        postscountarray[searchedid].count++;
      }
    }

    // sort posts count array by number of posts descending and names ascending
    postscountarray.sort((a, b) => b.count - a.count || a.name.localeCompare(b.name));

    // create new array of posters with more than 1 post from original array
    let searchedcountid = postscountarray.map(e => e.count).indexOf(1);
    let multiposters = postscountarray.slice(0,searchedcountid);

    // create the text to display in the footer
    let multiposterstext = "";
    // if we actually have multiposters process their array
    if (multiposters.length>0)
    {
      // create footer info text from multiposters array
    	multiposterstext = multiposters[0].name+"("+multiposters[0].count.toString()+")";
    	for (var i=1; i<multiposters.length; i++)
    	{
      	multiposterstext += ", "+multiposters[i].name+"("+multiposters[i].count.toString()+")";
    	}
    }
    //if we don't have multiposters just inform about it
    else
    {
      multiposterstext = "No multiposters";
    }

    // add the info in a "sticky" footer
  	var footerinfo=document.createElement('div');
		footerinfo.innerHTML='<div id="thread-posting-totals-added" style="font-size:14px;font-style:italic;color:Black;background:LightGray;position:fixed;bottom:0;width:100%;padding:5px;border-top-width:1px;border-top-style:solid;">' + multiposterstext + '</div>';
		document.body.appendChild(footerinfo);
  }
})();