Campfire_Alerts.user.js

// ==UserScript==
// @name           Campfire Alerts
// @description    Issues sound alerts for messages addressed to the user
// @match          https://*.campfirenow.com/room/*
// @author         João Britto
// @grant          none
// ==/UserScript==

function init(chat, Campfire, Class, escapeRegExp) {
  Campfire.PersonalMessageHandler = Class.create({
    initialize: function(chat) {
      this.chat = chat;
      this.initPattern();
    },

    initPattern: function() {
      var tokens = this.chat.username.split(/\s+/),
          names = [],
          initials = '';

      for (var i = 0; i < tokens.length; i++) {
        var initial = tokens[i].match(/^[A-Z]/);

        if (initial) {
          names.push(escapeRegExp(tokens[i]));
          initials += initial;
        }
      }

      this.pattern = new RegExp('\\b(?:' + names.join('|') + '|' + initials + ')\\b', 'i');
    },

    onMessagesInserted: function(messages) {
      for (var i = 0; i < messages.length; i++) {
        this.proccessMesage(messages[i]);
      }
    },

    proccessMesage: function(message) {
      if (message.kind === 'text') {
        var messageBody = message.bodyElement().textContent;

        if (this.pattern.test(messageBody)) {
          message.authorCell.style.backgroundColor = '#D9FAD9';
          message.bodyCell.style.backgroundColor = '#D9FAD9';

          this.chat.soundmanager.play('incoming', true);
          notify(message.author(), { body: messageBody });
        }
      }
    }
  });

  chat.personalmessagehandler = new Campfire.PersonalMessageHandler(chat);
  chat.listeners.push(chat.personalmessagehandler);
  // Cache for the 'messagesInserted' event must be cleared to enable the new listener
  chat.events.messagesInserted = undefined;
}

function notify(title, options) {
  // Ensure user granted permissions for Notification
  if (Notification.permission !== 'granted') {
    Notification.requestPermission(function (permission) {
      if (Notification.permission !== permission)
        Notification.permission = permission;
    });
  }

  if (Notification.permission === 'granted')
    var n = new Notification(title, options);
}

init(window.chat, window.Campfire, window.Class, window.RegExp.escape);