module MetricConfigurationsHelper
  def aggregation_options
    [[t("aggregation_forms.MEAN"),"MEAN"], [t("aggregation_forms.MEDIAN"), "MEDIAN"], [t("aggregation_forms.MAXIMUM"), "MAXIMUM"], [t("aggregation_forms.MINIMUM"), "MINIMUM"], [t("aggregation_forms.STANDARD_DEVIATION"), "STANDARD_DEVIATION"], [t("aggregation_forms.COUNT"), "COUNT"]]
  end

  def reading_group_options
    ReadingGroup.all.map { |reading_group| [reading_group.name, reading_group.id] }
  end

  def native_metrics_of(kalibro_configuration_id)
    MetricConfiguration.metric_configurations_of(kalibro_configuration_id).map do |metric_configuration|
      [ metric_configuration.metric.code, metric_configuration.metric.name ]
    end
  end

  def supported_metrics_of(metric_collector_name)
    # find_by_name throws an exception instead of returning nil, unlike ActiveRecord's API
    KalibroClient::Entities::Processor::MetricCollectorDetails.find_by_name(metric_collector_name).supported_metrics
  end

  def choose_metric_path(metric, kalibro_configuration_id)
    if metric.type == 'HotspotMetricSnapshot'
      kalibro_configuration_hotspot_metric_configurations_path(kalibro_configuration_id: kalibro_configuration_id)
    else
      kalibro_configuration_new_metric_configuration_path(kalibro_configuration_id: kalibro_configuration_id)
    end
  end

  def hotspot_metric_configuration?(metric_configuration)
    metric_configuration.metric.type == 'HotspotMetricSnapshot'
  end
end