chore:seed demographics

app/services/dashboard/demographic_loader.rb

@@ -0,0 +1,63 @@
+# frozen_string_literal: true
+
+require "csv"
+
+module Dashboard
+  class DemographicLoader
+    def self.load_data(filepath:)
+      CSV.parse(File.read(filepath), headers: true) do |row|
+        process_race(row:)
+        process_gender(row:)
+        create_from_column(column: "Income", row:, model: Income)
+        create_from_column(column: "ELL", row:, model: Ell)
+        create_from_column(column: "Special Ed Status", row:, model: Sped)
+      end
+    end
+
+    def self.process_race(row:)
+      qualtrics_code = row["Race Qualtrics Code"].to_i
+      designation = row["Race/Ethnicity"]
+      return unless qualtrics_code && designation
+
+      if qualtrics_code.between?(6, 7)
+        UnknownRace.new(qualtrics_code:, designation:)
+      else
+        KnownRace.new(qualtrics_code:, designation:)
+      end
+    end
+
+    def self.process_gender(row:)
+      qualtrics_code = row["Gender Qualtrics Code"].to_i
+      designation = row["Sex/Gender"]
+      return unless qualtrics_code && designation
+
+      gender = Gender.find_or_create_by!(qualtrics_code:, designation:)
+      gender.save
+    end
+
+    def self.create_from_column(column:, row:, model:)
+      designation = row[column]
+      return unless designation
+
+      model.find_or_create_by!(designation:)
+    end
+  end
+
+  class KnownRace
+    def initialize(qualtrics_code:, designation:)
+      known = Race.find_or_create_by!(qualtrics_code:)
+      known.designation = designation
+      known.slug = designation.parameterize
+      known.save
+    end
+  end
+
+  class UnknownRace
+    def initialize(qualtrics_code:, designation:)
+      unknown = Race.find_or_create_by!(qualtrics_code: 99)
+      unknown.designation = "Race/Ethnicity Not Listed"
+      unknown.slug = designation.parameterize
+      unknown.save
+    end
+  end
+end