Cleanup Facebook History user script

private-facebook.user.js

// ==UserScript==
// @name        private-facebook
// @namespace   lexoyo.user.scripts
// @description cleanup facebook as you go
// @version     1.0.0
// @grant       none
// @include     https://www.facebook.com*
// @run-at      document-end
// ==/UserScript==

console.info('User Script Activated: lexoyo.user.scripts private-facebook');

function addCss(cssString) {
  var head = document.getElementsByTagName('head')[0];
  var newCss = document.createElement('style');
  newCss.type = "text/css";
  newCss.innerHTML = cssString;
  head.appendChild(newCss);
}

function addButton(id, label, onClick) {
  if(document.body.querySelector('#' + id)) return;
  var container = document.body.querySelector('._2t-e');
  var btn = document.createElement('button');
  btn.innerHTML = label;
  btn.addEventListener('click', onClick);
  btn.classList.add('btn');
  container.appendChild(btn);
  return btn;
}

function isCleanup() {
  return location.search.indexOf('cleanup');
}

function cleanup () {
  var btn = document.querySelector('[data-testid=recent_searches_clear]');
  console.log('cleanup now!!', btn);
  if(!btn) {
    setTimeout(function() {
      cleanup();
    }, 1000);
    return;    
  }
  btn.click();
  confirmCleanup();
}

function confirmCleanup() {
  var btn = document.querySelector('.layerConfirm');
  console.log('confirm now!!', btn);
  if(!btn) {
    setTimeout(function() {
      confirmCleanup();
    }, 1000);
    return;
  }
  btn.click();
  setTimeout(function() {
    history.back();
  }, 1000);
}

addCss(`
  .btn {
    margin: 8px;
  }
`);

/////////////////////////

if(isCleanup() >= 0) {
  cleanup();
}
var test = addButton("test", "Cleanup", function() {
  document.location = "https://www.facebook.com/me/allactivity?log_filter=search&cleanup";
});