Tampermonkey script

test_bot.js

// ==UserScript==
// @name         Reddit Upvote Bot
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://*.reddit.com/*
// @grant        none
// ==/UserScript==
(function() {
    'use strict';
    const status_str="botstatus";
    const user_str="botuser";
    const post_str="botpost";
    const url_login="https://www.reddit.com/login";
    const status_login=1;
    const status_find_post=2;
    const status_upvote=3;
    const status_stop=4;
    function loggedIn(callback){
        var xhttp=new XMLHttpRequest();
        xhttp.addEventListener("load",function(){
           callback(xhttp.responseURL==="https://www.reddit.com/");
        });
        xhttp.open("GET","https://www.reddit.com/login");
        xhttp.send();
    }
    function logout(){
        $(".logout.hover").submit();
    }
    function login(user,pass){
        console.log("Logging in as "+user);
        $("#user_login").val(user);
        $("#passwd_login").val(pass);
        $("#login-form > div > button").click();
        console.log("Submitted login form");
    }
    function getUser(){return $(".user>a").text();}
    var users={
      
    };
    var userkeys=Object.keys(users);
    var posts_to_upvote=[
        "https://www.reddit.com/r/blog/comments/66455r/looking_back_at_rplace/?ref=share&ref_source=link"
        ];
    function getItem(name,defvalue){
        var val=localStorage.getItem(name);
        if(val===null){return defvalue;
        }else{return val;}
    }
    function hasItem(name){return localStorage.getItem(name)!==null;}
    function setItem(name,value){localStorage.setItem(name,value);   }
    function redirect(url){window.location=url;}
    console.log("Status = "+getItem(status_str));
    switch(parseInt(getItem(status_str,"-1"))){
        case status_login:
            console.log("Need logging in");
            if(window.location!==url_login){
                console.log("Not on login page, redirecting");   
                redirect(url_login);
            }
            var user=getItem(user_str);
            if(user===null){
                alert("Reddit bot user set to null, stopping");
                setItem(status_str,status_stop);
                break;
            }else{
                var password=users[user];
                login(user,password);
                setItem(status_str,status_stop);
            }
            break;
        case status_find_post:
            console.log("LOGGED IN AND FINDING POSTS");
            loggedIn((is_logged)=>{
                console.log("Is logged in = "+is_logged);
               if(is_logged){
                   
               }
            });
            break;
        case status_upvote:
            break;
        case status_stop:
            break;
        default:
            console.log("Starting reddit upvote bot");
            if(userkeys.length>0){
                setItem(user_str,userkeys[0]);
                setItem(status_str,status_login);
                location.reload();
            }else{
                setItem(status_str,status_stop);
                alert("No users specified, cannot continue upvote bot");
            }
            break;
    }
})();