var KretaChartHelper = (function () {
  var kretaChartHelper = function () {};

  kretaChartHelper.getKendoChartData = function (chartId) {
    var chart = $('#' + chartId);
    var chartData = chart.data('kendoChart');

    return chartData;
  };

  kretaChartHelper.setDatasource = function (chartId, categories, seriesData) {
    $('#' + chartId).kendoChart({
      categoryAxis: {
        categories: categories
      },
      series: [
        {
          data: seriesData
        }
      ]
    });
    kretaChartHelper.refreshChart(chartId);
  };

  kretaChartHelper.refreshChart = function (chartId) {
    var chartData = kretaChartHelper.getKendoChartData(chartId);

    chartData.dataSource.read();
    chartData.refresh();
  };

  return kretaChartHelper;
})();