Reddit comment deleter

// ==UserScript==
// @name         Reddit old comment deleter
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  deletes reddit comments older than a day, activate by visiting https://old.reddit.com/u/me#trim
// @author       You
// @match        https://old.reddit.com/*
// @run-at       document-idle
// ==/UserScript==

(function(){
    'use strict'; if(!location.href.includes('#trim')) return;

    /* variables */
    var username = "original";
    var otherpart = "original";
    var recheck_minutes = 10;

    /* refresh function */
    function reloadIn(seconds) {
        setTimeout(function(){
                location.href="https://old.reddit.com/user/me/#trim";
                window.reload();
            }, seconds*1000);
    };

    /* logic variables */
    var deleted = false;
    var comments = document.querySelectorAll("div[class*=comment]");

    if(r.config['modhash'] === "" & username !== "optional" & otherpart !== "optional") {
        /* log in part */
        document.evaluate("//a[text()='Log in']", document).iterateNext().click();
        setTimeout(() => {
            document.querySelector('#user_login').value=username;
            document.querySelector('#passwd_login').value=otherpart;
            document.evaluate("//button[text()='log in']", document).iterateNext().click();
        },250);
        reloadIn(2);
    };

    /* sends request to delete comment */
    function remove(c) {
        var id = c.id.replace('thing_','');
        console.warn("deleting", id, c); deleted = true;
        var request = ("id=" + id + "&executed=deleted&r=" + r.config['post_site'] + "&uh=" + (r.config['modhash']) + "&renderstyle=html");
        var xhttp = new XMLHttpRequest();
            xhttp.open("POST", "https://old.reddit.com/api/del", true);
            xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
            xhttp.send(request);
    };

    /* going through each comment */
    function handler(c) {
        if(c.querySelector('time').innerText.includes('day')) {
            remove(c);
        };
    };

    comments.forEach(handler);

    if(deleted) {
        reloadIn(2);
    } else {

        setTimeout(function () {
            var nextButton = document.querySelector('a[rel="nofollow next"]');
            if(nextButton === null) return;
            location.href = nextButton.href + "#trim";
            window.reload();
        }, 2000);

        reloadIn(recheck_minutes*60);
    };

})();