sqm-dashboards/app/controllers/dashboard_controller.rb

class DashboardController < SqmApplicationController

  def index
    @measure_graph_row_presenters = measure_ids
                                      .map { |measure_id| Measure.find_by_measure_id measure_id }
                                      .map(&method(:presenter_for_measure))
                                      .sort
                                      .reverse

    @category_presenters = SqmCategory.all.map { |sqm_category| CategoryPresenter.new(
      category: sqm_category,
      academic_year: academic_year,
      school: school,
    )}

  end


  private

  def measure_ids
    Measure.all.map(&:measure_id)
  end

  def presenter_for_measure(measure)
    score = sufficient_data?(measure: measure) ? score(measure: measure) : nil

    MeasureGraphRowPresenter.new(
      measure: measure,
      score: score
    )
  end

  def sufficient_data?(measure:)
    SurveyItemResponse.sufficient_data?(measure: measure, academic_year: academic_year, school: school)
  end

  def score(measure:)
    SurveyItemResponse.for_measure(measure)
                      .where(academic_year: academic_year, school: school)
                      .average(:likert_score)
  end

end