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(function() {
  'use strict';

  /**
   *** Before Unload Service
   **/
  angular
    .module([appModule])
    .factory('beforeUnload', [
      '$rootScope', '$window', '$timeout', 'DataService',
      BeforeUnload
    ]);

  function BeforeUnload($rootScope, $window, $timeout, DataService) {
    $window.onbeforeunload = function(e) {
      var confirmation = {};
      var event = $rootScope.$broadcast('onBeforeUnload', confirmation);

      //TODO trigger a popup to give the use to save or not ...

      if (event.defaultPrevented && DataService.isDirty()) {
        return confirmation.message;
      }
    };

    $window.onunload = function() {

      //discard all local changes and removes from local storage
      DataService.removeLocalState();
      $rootScope.$broadcast('onUnload');
    };

    return {};
  }
})();

(function() {
  'use strict';

  angular
    .module('highlights-admin')
    .run(['$rootScope', '$location', '$state', 'authService', 'DataService', 'beforeUnload', Run]);

  function Run($rootScope, $location, $state, authService, DataService, beforeUnload) {
    $rootScope.$on('$stateChangeStart', function(e, toState, toParams, fromState, fromParams) {
      var isLogin = toState.name === 'public.login';
      var authed = authService.isAuthed();

      if (isLogin) {

        //if going to login and authenticated then redirect to admin
        if (authed === false) return; // no need to redirect
        e.preventDefault();
        $state.transitionTo('private.admin');
      }

      // now, redirect only not authenticated
      if (authed === false) {
        e.preventDefault(); // stop current execution
        $state.transitionTo('public.login'); // go to login
      }
    });

    $rootScope.$on('onBeforeUnload', function(e, confirmation) {
      confirmation.message = 'You will lose all your changes.';
      e.preventDefault();
    });
  }