UserScript - ExtremeReach fix poorly designed Kendo tables

ER ticket-search-cleanup.user.js

// ==UserScript==
// @name         ER ticket search cleanup
// @namespace    https://github.com/Brayyy
// @version      1.2.1
// @description  Fix all screwy things about the ticket search page, including column widths and search box layout, and more to come! (hopefully)
// @author       [email protected]
// @match        https://app.extremereach.com/cs/tickets/search
// @icon         https://www.google.com/s2/favicons?sz=64&domain=extremereach.com
// @updateURL    https://gist.github.com/Brayyy/f58a7656642674a6c7f8e836aec5f759/raw/ER%2520ticket-search-cleanup.user.js
// @downloadURL  https://gist.github.com/Brayyy/f58a7656642674a6c7f8e836aec5f759/raw/ER%2520ticket-search-cleanup.user.js
// @grant        none
// ==/UserScript==

// https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver
// https://www.freecodecamp.org/news/javascript-debounce-example/

(function() {
    'use strict';

    function fixSearchBox() {
        console.log("fixSearchBox()");
        // Reduce columns from 5->4
        const cols = document.querySelector('.search-form');
        // if (!cols) return console.error("Couldn't find .search-form");
        for (let i = 0; i < cols.children.length; i++) {
            cols.children[i].style = "grid-template-columns: repeat(4, 1fr)";
        }
        // Unfuck the cssoverrides
        document.querySelectorAll(".search-fields > :nth-child(3)")[0].style = "grid-column: 3";
        document.querySelectorAll(".search-fields > :nth-child(3)")[1].style = "grid-column: 3";
        document.querySelectorAll(".search-fields > :nth-child(2)")[2].style = "grid-column: 3";
        document.querySelectorAll(".search-fields > :nth-child(3)")[2].style = "grid-column: 4";
        // advanced may not be enabled
        if (document.querySelectorAll(".search-fields > :nth-child(3)").length > 3) {
            document.querySelectorAll(".search-fields > :nth-child(3)")[3].style = "grid-column: 3";
            document.querySelectorAll(".search-fields > :nth-child(3)")[4].style = "grid-column: 3";
            document.querySelectorAll(".search-fields > :nth-child(3)")[5].style = "grid-column: 3";
            document.querySelectorAll(".search-fields > :nth-child(3)")[6].style = "grid-column: 3";
        }
    }

    function fixSearchResults() {
        console.log("fixSearchResultsHeader()");

        // Resize dynamic columns
        let colStyles = {
          // "ID": "width: 75px; background-color: gray;",
          "ID": "width: 85px;",
          "Subject": "width: 40%;",
          "Updated": "width: 160px;",
          "Owner": "width: 15%;",
          "Milestone": "width: 80px;",
        };
        const tableHeaders = document.querySelector(`.k-grid-header tr`).children;

        let titleToIndex = {};
        for (let i = 0; i < tableHeaders.length; i++) {
            const columnTitle = tableHeaders[i].querySelector(".k-column-title").innerText;
            if (columnTitle) {
                titleToIndex[columnTitle] = i;
            }
        }

        // Resize permanent columns lacking a title
        document.querySelector(`[kendogridcolgroup] col:nth-child(1)`).style = "width: 30px"; // checkbox
        // totally hide worthless, non-removable columns
        document.querySelector(`[kendogridcolgroup] col:nth-child(2)`).style = "width: 0px"; // tags
        document.querySelector(`[kendogridcolgroup] col:nth-child(4)`).style = "width: 0px"; // linked?
        const actionCol = tableHeaders.length; // last column
        document.querySelector(`[kendogridcolgroup] col:nth-child(${actionCol})`).style = "width: 0px"; // actions

        for (const title in titleToIndex) {
            if (colStyles[title] !== undefined) {
                const index = titleToIndex[title];
                const nthChild = index + 1;
                const colStyle = colStyles[title];
                console.log(`setting ${index} nth-child(${nthChild}) ${title} style: to width: ${colStyle}`);
                document.querySelector(`[kendogridcolgroup] col:nth-child(${nthChild})`).style = colStyle;
            }
        };

        // de-bloat the table, reducing padding
        // I'm not sure why this needs to be delayed
        setTimeout(() => {
            $(".k-grid td").css("padding", "2px");
        }, 1000);
    }

    function addBasicNewTicket () {
        const div = document.createElement("div");
        const a = document.createElement("a");
        a.innerText = "New Ticket, no bullshit ->";
        a.href = "https://app.extremereach.com/cs/tickets/details/create/details";
        a.target = "_blank";
        div.appendChild(a);
        document.querySelector(".k-button-solid").parentElement.parentElement.appendChild(div)
    }

    function debounce_leading(func, timeout = 300){
        // console.log("debounce_leading()");
        let timer;
        return (...args) => {
            // console.log("debounce_leading() inner");
            if (!timer) {
                func.apply(this, args);
            }
            clearTimeout(timer);
            timer = setTimeout(() => {
                timer = undefined;
            }, timeout);
        };
    }


    const fixSearchBox_debounceLeading = debounce_leading(fixSearchBox);
    const observer1 = new MutationObserver(() => {
        const element = document.querySelector('.search-fields');
        if (!element) return
        fixSearchBox_debounceLeading();


        // Must leave Observer active in case "advanced options" is toggled
        // observer1.disconnect();
    });
    observer1.observe(document.body, { childList: true, subtree: true });
    const observer2 = new MutationObserver(() => {
        const element = document.querySelector('.k-grid-aria-root table tbody');
        if (!element) return
        fixSearchResults();
        addBasicNewTicket();

        observer2.disconnect();
    });
    observer2.observe(document.body, { childList: true, subtree: true });
})();