$timeout with nested callbacks

timeout_with_nested_callbacks.js

$timeout(function() {
  if (!$scope.promiseComplete && $scope.submitted) {
    $scope.message = {
      content: [{
        title: '',
        msg: 'Service down - created'
      }],
      type: 'error'
    };
    $timeout(function() {
      $scope.message = null;
      
      $timeout(function() {
        if (userDidntChangeAnything()) {
          $scope.message = {
            content: [{
              title: '',
              msg: 'Do you need any help? Talk to our support in our online chat!'
            }],
            type: 'notification'
          };
          
          $timeout(function() {
            $scope.message = null;
          }, 2000);
        }
      }, 5000);
    }, 2000);
  }
}, 5000)