ep_email_notifications/static/js/ep_email.js

exports.postAceInit = function(){

  
  // after 10 seconds if we dont already have an email for this author then prompt them
  setTimeout(function(){init()},10000);
}

function init(){
  if(clientHasAlreadyRegistered){ // if the client has already registered for emails on this pad.
    showAlreadyRegistered(); // client has already registered, let em know..
  }else{
    askClientToEnterEmail(); // ask the client to register
  }
}

function showAlreadyRegistered(){ // the client already registered for emails on this pad so notify the UI
  $.gritter.add({
    // (string | mandatory) the heading of the notification
    title: "Email subscription",
    // (string | mandatory) the text inside the notification
    text: "You are already registered for emails for this pad",
    // (bool | optional) if you want it to fade out on its own or just sit there
    sticky: false
  });

}

function clientHasAlreadyRegistered(){ // Has the client already registered for emails on this?
  // Given a specific AuthorID do we have an email address in the database?
  // Given that email address is it registered to this pad?
  // need to pass the server a message to check
  var userId = pad.getUserId();
  var message = {};
  message.type = 'USERINFO_AUTHOR_EMAIL_IS_REGISTERED_TO_PAD';
  message.userInfo = {};
  message.userInfo.userId = userId;
  pad.collabClient.sendMessage(message);


}

function askClientToEnterEmail(){
  $.gritter.add({
    // (string | mandatory) the heading of the notification
    title: "Email notifications for this pad",
    // (string | mandatory) the text inside the notification
    text: "<form id='ep_email_form'><label for='ep_email'><input id='ep_email' placeholder='your@email.com' value='foo@bar.com' type=email><input type=submit></form>",
    // (bool | optional) if you want it to fade out on its own or just sit there
    sticky: true,
    // (int | optional) the time you want it to be alive for before fading out
    time: '2000',
    // the function to bind to the form
    after_open: function(e){
      $('#ep_email_form').submit(function(){
        $(e).hide();

        $.gritter.add({
          // (string | mandatory) the heading of the notification
          title: "Email subscribed",
          // (string | mandatory) the text inside the notification
          text: "You will recieve email when someone changes this.    If this is the first time you have requested emails you will need to confirm your email address"
        });
        sendEmailToServer();
        return false;
      });
    }
  });
}

function sendEmailToServer(){
  var email = $('#ep_email').val();
  var userId = pad.getUserId();
  var message = {};
  message.type = 'USERINFO_UPDATE';
  message.userInfo = {};
  message.padId = pad.getPadId();
  message.userInfo.email = email;
  message.userInfo.userId = userId;

  if(email){
    pad.collabClient.sendMessage(message);
  }
}