gistfile1.txt

angular.module('services.message', ['ionic'])

.service('Message', function($rootScope, $log, $window) {
  service = {};
  
  if( $window.localStorage['messages'] != null || $window.localStorage['messages'] != undefined){
    var messages = JSON.parse($window.localStorage['messages']);
  }else{
    var messages = [];
  }

  service.getMessages = function(){
    return messages;
  }

  service.addMessage = function(message){
    messages.push(message);
    $window.localStorage['messages'] = JSON.stringify(messages);
    updateMessages('adicionada');
  }

  service.editMessage = function(message, messageIndex){
    messages[messageIndex] = message;

    $window.localStorage['messages'] = JSON.stringify(messages);
    updateMessages('editada');
  }

  service.deleteMessage = function(messageIndex){
    messages.splice(messageIndex, 1);
    $window.localStorage['messages'] = JSON.stringify(messages);
    updateMessages('apagada');
  }

  function updateMessages(action) {
    $rootScope.$broadcast('messagesUpdated',{action: action});  // broadcasts the update to listeners 
  }
  
  service.messages = function() {
    return messages;
  }

  return service;
});