<!DOCTYPE html>

<html lang="en">
<head>
  <meta charset="utf-8" />
  <title>Spy WS test</title>
  <style>
    hr {color:sienna;}
    body {
      background-color:#b0c4de;
      font:normal 16px/20px "Helvetica Neue", Helvetica, sans-serif;
    }
    #command {
      width:70%;
    }
    #status {
      background-color:#0094ff;
      width:50%;
      padding:4px;
    }
  </style>
</head>
<body>
<header><h1>mojo spy</h1></header>
  <form>
    <input type="text" id="command" placeholder="enter spy command + enter" />
  </form>
  <p id="status">status: no connection</p>
  <p id="log">...</p>
  <script>
    function openConnection() {
      if (conn.readyState === undefined || conn.readyState > 1) {
        conn = new WebSocket('ws://127.0.0.1:42424');
        conn.onopen = function () {
          state.innerHTML = 'connected @port 42424';
        };
        conn.onmessage = function (event) {
          var message = event.data;
          log.innerHTML += "<br/>" + message;
        };
        conn.onclose = function (event) {
          state.innerHTML = 'connection closed';
        };
        conn.onerror = function (event) {
          state.innerHTML = 'got error';
        };
      }
    }

    var addEvent = (function () {
      if (document.addEventListener) {
        return function (el, type, fn) {
          if (el && el.nodeName || el === window) {
            el.addEventListener(type, fn, false);
          } else if (el && el.length) {
            for (var i = 0; i < el.length; i++) {
              addEvent(el[i], type, fn);
            }
          }
        };
      } else {
        return function (el, type, fn) {
          if (el && el.nodeName || el === window) {
            el.attachEvent('on' + type, function () { return fn.call(el, window.event); });
          } else if (el && el.length) {
            for (var i = 0; i < el.length; i++) {
              addEvent(el[i], type, fn);
            }
          }
        };
      }
    })();

    var log = document.getElementById('log');
    var cmd = document.getElementById('command');
    var form = cmd.form;
    var conn = {};
    var state = document.getElementById('status');

    if (window.WebSocket === undefined) {
      state.innerHTML = 'websockets not supported';
    } else {
      addEvent(form, 'submit', function (event) {
        event.preventDefault();
        if (conn.readyState === 1) {
          conn.send(JSON.stringify(cmd.value));
          log.innerHTML = 'data sent';
          cmd.value = '';
        }
      });

      openConnection();
    }
  </script>
</body>
</html>