Google Voice messages / history purger (For those who think: "how to remove all my history and messages from google voice")

google-voce-purger.js

// this script is to be pasted into google chrome when you on messages page
// !!! ACTHUNG: IT WILL DESTROY ALL OF YOUR MESSAGES !!!
// I think it will remove everything including history
// Be careful. Make sure you don't need all of you N*k messages

// TO REMOVE HISTORY
// 1. go to history page
// 2. check what url is called for load messages and when you delete messages forever
// 3. replace urs accordinly in loadMessages, deleteAllWith


function loadMessages() {
  
  // load messages
  // if you have problems in this call 
  // go to your network panel and check what url is called 
  // when you reload messages page

  var xhr = new XMLHttpRequest();
  // url is different when cleaning archive
  xhr.open('GET', '/voice/b/0/inbox/recent/all/?v=75984049');
  xhr.onload = function(e) {
    if (this.status === 200) {
      var xmlDoc = parseXml(this.response);
      var json = messagesJson(xmlDoc);
      var ids = getMessageIds(json);
      if (!(ids && ids.length > 0)) {
        return alert('done cleaning your shit');
      }
      var params = getParams(ids);
      return deleteAllWith(params);
    }
    throw new Error('Some err while getting messages:' + this.status + ' ' + this.response);
  };
  xhr.send();  
}

function messagesJson (xmlDoc) {
  var jsonNode = xmlDoc.getElementsByTagName('json')[0];
  if (!jsonNode) throw new Error('No json node in response. Fudge....');
  return JSON.parse(jsonNode.textContent);
}

function parseXml (response) {
  var parser = new DOMParser();
  return parser.parseFromString(response,"text/xml");
}

function getMessageIds (json) {
  return Object.keys(json.messages);
}

function getParams (messageIds) {
  // prepare params for posting the form
  var ids = messageIds.map(function(id){return 'messages='+id;});
  // get id for the request so Google don't bitch about your post
  var se = document.querySelector('[name=_rnr_se]');
  ids.push('trash=1'); // optional with archive
  ids.push(se.name+'='+se.value);
  return ids.join('&');
}

function whenDeleteSent () {
  if (this.status === 200) {
    return loadMessages();
  }
  throw new Error('Some err while deleting:' + this.status + ' ' + this.response);
}

function deleteAllWith (params) {
  
  // perform the post to delete texts
  // same as with loadMessages (look into your network requests)

  var xhr = new XMLHttpRequest();
  // url is different when cleaning archive
  xhr.open('POST', '/voice/b/0/inbox/deleteMessages/', true);
  xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded;charset=UTF-8')
  xhr.onload = whenDeleteSent;
  xhr.send(params);
}

loadMessages();