(function () {
  'use strict';

  var temporaryTimeout = 10000;

  var name = 'adNotificationBlockItem';
  angular.module('app.directive')
    .directive('adNotificationBlockItem', ['$timeout', 'notification', function ($timeout, notification) {
      return {
        templateUrl: 'directive/adNotificationBlock/' + name + '.html',
        scope: {
          item: '=' + name
        },
        link: function (scope, element, attr) {
          var cleanup = angular.noop, time, startTime, timerId, onTimeout, pauseTimer, startTimer;

          if (scope.item.temporary) {
            time = temporaryTimeout;

            cleanup = function (unbind) {
              if (timerId) {
                $timeout.cancel(timerId);
                timerId = null;
              }
              if (unbind) {
                element.off('mouseenter', pauseTimer);
                element.off('mouseleave', startTimer);
              }
            };

            onTimeout = function () {
              cleanup(true);
              scope.close();
            };

            pauseTimer = function () {
              cleanup();
              time -= Date.now() - startTime;
              startTime = 0;
            };

            startTimer = function () {
              cleanup();
              if (time > 0) {
                time < 1000 && (time = 1000);
                startTime = Date.now();
                timerId = $timeout(onTimeout, time);
              }
            };

            element.on('mouseenter', pauseTimer);
            element.on('mouseleave', startTimer);

            startTimer();
          }

          scope.close = function () {
            cleanup(true);
            notification.remove(scope.item);
          };

          scope.$on('$destroy', function () {
            cleanup(true);
          });
        }
      };
    }]);
})();