Transforming a json now, eh

.rubocop_todo.yml

@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2020-01-09 20:09:37 -0500 using RuboCop version 0.78.0.
+# on 2020-01-11 15:25:31 -0500 using RuboCop version 0.78.0.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new

cpi_fetcher.rb

@@ -11,19 +11,17 @@ class CPIFetcher
     resp = fetch_raw_response
     return nil unless resp['Results']['series']
 
-    data = resp['Results']['series'].first['data']
-    {
-      start: start_cpi_value(data),
-      latest: latest_cpi_value(data)
-    }
+    resp['Results']['series'].first['data']
   end
 
   def cpi_csv
-    values = cpi
     CSV.generate do |csv|
-      csv << %w[year value]
-      csv << [start_year, values.fetch(:start)]
-      csv << [end_year, values.fetch(:latest)]
+      csv << %w[year period period_name value]
+      cpi.each do |rec|
+        csv << %w[
+          year period periodName value
+        ].map { |k| rec.fetch(k) }
+      end
     end
   end