Join and leave Typeracer races

// ==UserScript==
// @name        Join and leave TypeRacer races
// @namespace   morinted
// @description Join and leave a TypeRacer private racetrack
// @include     https://play.typeracer.com/*
// @version     1
// @grant       none
// @require https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js
// ==/UserScript==


var globalCounter = 0
var mainPageCounter = 0
var lastQuoteText = ''

function joinOrLeave() {
  var raceAgainLink = (document.getElementsByClassName('raceAgainLink') || [])[0]
  var leaveRaceLink = document.querySelector('table.navControls > tbody > tr > td > a:first-child')
  var gameStatus = ((document.getElementsByClassName('gameStatusLabel') || [])[0] || {}).innerHTML || ''
  if (gameStatus.startsWith('Waiting')) {
    var quoteText = (document.querySelector('table.inputPanel') || {}).textContent || ''
    if (quoteText && quoteText !== lastQuoteText) {
      lastQuoteText = quoteText
      var chatInput = $('input.txtChatMsgInput')
      chatInput.click()
      chatInput.val(' >> ' + quoteText)
      chatInput.focus()
      var keyboardEvent = jQuery.Event('keydown')
      keyboardEvent.which = 13
      keyboardEvent.keyCode = 13
      chatInput.trigger(keyboardEvent)

    }
  } else if (gameStatus.startsWith('The race is about to start')) {
    // Nothing
  } else if (gameStatus.startsWith('Join')) {
    raceAgainLink.click()
    setTimeout(joinOrLeave, 200)
    globalCounter = 0
  } else if (gameStatus.startsWith('Go!') || gameStatus.startsWith('The race is on!')) {
    leaveRaceLink.click()
    globalCounter = 0
  } else if (gameStatus.startsWith('The race has ended')) {
    document.body.click()
    // Do nothing.
  } else {
    if (document.querySelector('.mainMenuItemText')) {
      mainPageCounter += 1
    }
    // Maybe kicked out?
    $('.lnkRejoin').click() // Rejoin
    // Race your friends link
    $('div.mainViewport > div > table > tbody > tr:nth-child(4) > td > table > tbody > tr > td:nth-child(2) > table > tbody > tr:nth-child(1) > td > a').click()
    if (mainPageCounter > 1) {
      location.reload()
      mainPageCounter = 0
    }
  }
}

function loopJoinOrLeave() {
  setTimeout(function() {
    joinOrLeave()
    loopJoinOrLeave()
  }, 1000)
}
loopJoinOrLeave()