Before a few renames

app/services/id_card_printer/employer_cards_generator.rb

@@ -1,17 +1,38 @@
 module IdCardPrinter
     class EmployerCardsGenerator
 
-        def initialize(pl_plan_key, layout, zip=false)
-            @pl_plan_key = pl_plan_key
+        def initialize(employer, layout, zip=false)
+            @employer = employer
             @layout = layout
             @zip = zip
         end
 
         def call
-            IdCard::PrintData.where(pl_plan_key: @pl_plan_key).destroy_all
-            EmployerCards::DataFormatter.new(@pl_plan_key).call
+            IdCard::PrintData.where(pl_plan_key: @employer.pl_plan_key).destroy_all
+            IdCardPrinter::EmployerDataFormatter.new(@employer).call
 
-            IdCardPrinter::PdfProcessor.new(@pl_plan_key, @layout, @zip).call
+            pdf_array = IdCardPrinter::PdfProcessor.new(@employer, @layout, @zip).call
+
+            group_pdfs = combine_pdfs(pdf_array)
+            group_pdfs
+
+        end
+
+        private
+
+        def combine_pdfs(pdf_array)
+            if @zip
+                group_cards_pdf = Zip::OutputStream.write_buffer do |zio|
+                    pdf_array.each do |file|
+                        zio.put_next_entry(file[:name])
+                        zio.write(file[:data])
+                    end
+                end
+            else
+                group_cards_pdf = CombinePDF.new
+                pdf_array.each { |pdf| group_cards_pdf << pdf }
+            end
+            group_cards_pdf
         end
     end
 end