(function () {
  'use strict';

  angular.module('app.directive')
    .directive('adRating', ['$parse', function ($parse) {
      return {
        scope: {},
        replace: true,
        templateUrl: 'directive/adRating/adRating.html',
        link: function (scope, element, attr) {
          var max = 5;
          scope.range = [];
          scope.range.length = max;

          var attrRating = $parse(attr['adRating']);
          scope.$parent.$watch(function (scope) {
            return attrRating(scope);
          }, function (value) {
            scope.value = value = parseFloat(value) * max;
            for (var i = 0, n = 1; i < 5; ++i, ++n) {
              if (n <= value) {
                scope.range[i] = 'full';
              } else {
                scope.range[i] = value > n - 1 ? 'half' : 'empty';
              }
            }
          }, attrRating.literal);
        }
      };
    }]);
})();