feat: add parent survey gauges

app/presenters/parent_measure_presenter.rb

@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+class ParentMeasurePresenter < MeasurePresenter
+  def measure_id
+    "#{measure.measure_id} (Parent)"
+  end
+
+  def score_for_measure
+    @measure.parent_score(school: @school, academic_year: @academic_year)
+  end
+
+  def data_item_presenters
+    [].tap do |array|
+      array << parent_survey_presenter if measure.parent_survey_items.any?
+    end
+  end
+
+  private
+
+  def parent_survey_presenter
+    ParentSurveyPresenter.new(measure_id: measure.measure_id, survey_items: measure.parent_survey_items,
+                              has_sufficient_data: true, school:, academic_year:)
+  end
+end

app/presenters/parent_survey_presenter.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+class ParentSurveyPresenter < DataItemPresenter
+  attr_reader :survey_items
+
+  def initialize(measure_id:, survey_items:, has_sufficient_data:, school:, academic_year:)
+    super(measure_id:, has_sufficient_data:, school:, academic_year:)
+    @survey_items = survey_items
+  end
+
+  def title
+    "Parent survey"
+  end
+
+  def id
+    "parent-survey-items-#{measure_id}"
+  end
+
+  def reason_for_insufficiency
+    "low response rate"
+  end
+
+  def descriptions_and_availability
+    survey_items.map(&:description)
+  end
+end

app/presenters/subcategory_presenter.rb

@@ -43,12 +43,22 @@ class SubcategoryPresenter
 
   def measure_presenters
     @subcategory.measures.sort_by(&:measure_id).map do |measure|
-      MeasurePresenter.new(measure:, academic_year: @academic_year, school: @school)
-    end
+      out = [MeasurePresenter.new(measure:, academic_year: @academic_year, school: @school)]
+      if parent_gauges_have_displayable_score?(measure:)
+        out << ParentMeasurePresenter.new(measure:, academic_year: @academic_year,
+                                          school: @school)
+      end
+      out
+    end.flatten
   end
 
   private
 
+  def parent_gauges_have_displayable_score?(measure:)
+    measure.includes_parent_survey_items? && measure.parent_score(school: @school,
+                                                                  academic_year: @academic_year).average.positive?
+  end
+
   def admin_data_values_count
     @subcategory.measures.map do |measure|
       measure.scales.map do |scale|