Twitch Anti-Global Ban

// ==UserScript==
// @name     Twitch Anti-Global Ban
// @namespace        royalroad.com
// @include          *://*.twitch.tv/*
// @author           Degritone
// @description      Prevents you from sending messages if you're about to get global banned
// @version          1.0.0
// ==/UserScript==

var chat;
var messagesLeft = 19.0;

function getChat(){
  chat = document.getElementsByClassName("tw-block tw-border-radius-medium tw-font-size-6 tw-full-width tw-textarea tw-textarea--no-resize")[0];
  if(chat == null)
    setTimeout(getChat,5000);
  else {
    chat.addEventListener("change",function(){
                                    if(messagesLeft < 1)
                                      chat.value = "";
                                   });
    chat.addEventListener("keyup",function(){
                                    if(messagesLeft < 1)
                                      chat.value = "";
                                  });
    setTimeout(increaseMessages,1000);
  }
}

function increaseMessages(){
  messagesLeft = Math.min(19.0,messagesLeft+19.0/30);
  setTimeout(increaseMessages,1000);
}

setTimeout(getChat,1000);