campus-wire.js

// ==UserScript==
// @name         Campuswire-oops
// @version      0.1
// @author       Hampton Moore
// @match        https://campuswire.com/*
// @grant        none
// @run-at document-body
// ==/UserScript==


window.xhrold = XMLHttpRequest;

class XHRNew extends window.xhrold {
    constructor(...methods){
        super(...methods);
        console.log("xhr created");
    }

    addEventListener(...args){
      super.addEventListener(...args)
    }

    send(...args){
      console.log(this)
      super.addEventListener("load", reqListener);
      super.send(...args)
    }

}

XMLHttpRequest = XHRNew;

function reqListener() {
  if (!this.responseURL.includes("/messages")){
    return;
  }
  let data = JSON.parse(this.responseText)
  let poster = data[0]["author"]
  if (userBox != null) {
    userBox.innerHTML = `Viewing ${poster["firstName"]} ${poster["lastName"]}`
  }
}
var userBox = null;

window.addEventListener("load", (event) => {
  var div = document.createElement("div");
  div.id="userBox"
  div.style.color = "white";
  div.style.fontSize = "16px";
  div.style.background = "#0084FF";
  div.style.position = "absolute"
  div.style.zIndex = "100";
  div.style.right = "4px";
  div.style.bottom = "4px";
  div.style.textAlign = "right";
  div.style.borderRadius = "15px";
  div.style.padding = "8px";
  div.innerHTML = "";

  document.body.appendChild(div);
  userBox = document.getElementById('userBox')

});