Display different link when correcting duplicates

app/helpers/duplicate_logs_helper.rb

@@ -22,4 +22,9 @@ module DuplicateLogsHelper
   def duplicate_logs_action_href(log, page_id, original_log_id)
     send("#{log.model_name.param_key}_#{page_id}_path", log, referrer: "interruption_screen", original_log_id:)
   end
+
+  def change_duplicate_logs_action_href(log, page_id, all_duplicates)
+    remaining_duplicate_id = all_duplicates.map(&:id).reject { |id| id == log.id }.first
+    send("#{log.model_name.param_key}_#{page_id}_path", log, referrer: "duplicate_logs", remaining_duplicate_id:)
+  end
 end

app/views/duplicate_logs/_duplicate_log_check_answers.erb

@@ -26,7 +26,13 @@
               <span class="govuk-!-font-weight-regular app-!-colour-muted"><%= inferred_answer %></span>
             <% end %>
           <% end %>
-
+          <% if @all_duplicates.count > 1 %>
+            <% row.action(
+                text: question.action_text(log),
+                href: change_duplicate_logs_action_href(log, question.page.id, @all_duplicates),
+                visually_hidden_text: question.check_answer_label.to_s.downcase,
+              ) %>
+          <% else %>
             <% row.action(
               text: question.action_text(log),
               href: duplicate_logs_action_href(log, question.page.id, @original_log_id),
@@ -35,5 +41,6 @@
           <% end %>
         <% end %>
       <% end %>
+    <% end %>
   </div>
 </div>

spec/requests/duplicate_logs_controller_spec.rb

@@ -34,7 +34,8 @@ RSpec.describe DuplicateLogsController, type: :request do
         sign_in user
       end
 
-      context "with multiple duplicate lettings logs" do
+      context "when viewing lettings logs duplicates" do
+        context "when there are multiple duplicate logs" do
           let(:duplicate_logs) { create_list(:lettings_log, 2, :completed) }
 
           before do
@@ -57,9 +58,9 @@ RSpec.describe DuplicateLogsController, type: :request do
             expect(page).to have_content("Q37 - Lead tenant’s working situation", count: 3)
             expect(page).to have_content("Household rent and charges", count: 3)
             expect(page).to have_link("Change", count: 21)
-          expect(page).to have_link("Change", href: "/lettings-logs/#{lettings_log.id}/tenant-code?original_log_id=#{lettings_log.id}&referrer=interruption_screen")
+            expect(page).to have_link("Change", href: "/lettings-logs/#{lettings_log.id}/tenant-code?referrer=duplicate_logs&remaining_duplicate_id=#{duplicate_logs[0].id}")
-          expect(page).to have_link("Change", href: "/lettings-logs/#{duplicate_logs[0].id}/tenant-code?original_log_id=#{lettings_log.id}&referrer=interruption_screen")
+            expect(page).to have_link("Change", href: "/lettings-logs/#{duplicate_logs[0].id}/tenant-code?referrer=duplicate_logs&remaining_duplicate_id=#{lettings_log.id}")
-          expect(page).to have_link("Change", href: "/lettings-logs/#{duplicate_logs[1].id}/tenant-code?original_log_id=#{lettings_log.id}&referrer=interruption_screen")
+            expect(page).to have_link("Change", href: "/lettings-logs/#{duplicate_logs[1].id}/tenant-code?referrer=duplicate_logs&remaining_duplicate_id=#{lettings_log.id}")
           end
 
           it "displays buttons to delete" do
@@ -70,7 +71,36 @@ RSpec.describe DuplicateLogsController, type: :request do
           end
         end
 
-      context "with multiple duplicate sales logs" do
+        context "when there are no more duplicate logs" do
+          before do
+            allow(LettingsLog).to receive(:duplicate_logs).and_return(LettingsLog.none)
+            get "/lettings-logs/#{lettings_log.id}/duplicate-logs?original_log_id=#{lettings_log.id}"
+          end
+
+          it "displays check your answers for each log with correct questions" do
+            expect(page).to have_content("Q5 - Tenancy start date", count: 1)
+            expect(page).to have_content("Q7 - Tenant code", count: 1)
+            expect(page).to have_content("Q12 - Postcode", count: 1)
+            expect(page).to have_content("Q32 - Lead tenant’s age", count: 1)
+            expect(page).to have_content("Q33 - Lead tenant’s gender identity", count: 1)
+            expect(page).to have_content("Q37 - Lead tenant’s working situation", count: 1)
+            expect(page).to have_content("Household rent and charges", count: 1)
+            expect(page).to have_link("Change", count: 7)
+            expect(page).to have_link("Change", href: "/lettings-logs/#{lettings_log.id}/tenant-code?original_log_id=#{lettings_log.id}&referrer=interruption_screen")
+          end
+
+          it "displays buttons to return to log" do
+            expect(page).to have_link("Back to Log #{lettings_log.id}", href: "/lettings-logs/#{lettings_log.id}")
+          end
+
+          it "displays no duplicates banner" do
+            expect(page).to have_content("This log had the same answers but it is no longer a duplicate. Make sure the answers are correct.")
+          end
+        end
+      end
+
+      context "when viewing sales logs duplicates" do
+        context "when there are multiple duplicate logs" do
           let(:duplicate_logs) { create_list(:sales_log, 2, :completed) }
 
           before do
@@ -92,6 +122,9 @@ RSpec.describe DuplicateLogsController, type: :request do
             expect(page).to have_content("Q25 - Buyer 1's working situation", count: 3)
             expect(page).to have_content("Q15 - Postcode", count: 3)
             expect(page).to have_link("Change", count: 18)
+            expect(page).to have_link("Change", href: "/sales-logs/#{sales_log.id}/purchaser-code?referrer=duplicate_logs&remaining_duplicate_id=#{duplicate_logs[0].id}")
+            expect(page).to have_link("Change", href: "/sales-logs/#{duplicate_logs[0].id}/purchaser-code?referrer=duplicate_logs&remaining_duplicate_id=#{sales_log.id}")
+            expect(page).to have_link("Change", href: "/sales-logs/#{duplicate_logs[1].id}/purchaser-code?referrer=duplicate_logs&remaining_duplicate_id=#{sales_log.id}")
           end
 
           it "displays buttons to delete" do
@@ -101,6 +134,33 @@ RSpec.describe DuplicateLogsController, type: :request do
             expect(page).to have_link("Keep this log and delete duplicates", href: "/sales-logs/#{duplicate_logs.second.id}/delete-duplicates?original_log_id=#{sales_log.id}")
           end
         end
+
+        context "when there are no more duplicate logs" do
+          before do
+            allow(SalesLog).to receive(:duplicate_logs).and_return(SalesLog.none)
+            get "/sales-logs/#{sales_log.id}/duplicate-logs?original_log_id=#{sales_log.id}"
+          end
+
+          it "displays check your answers for each log with correct questions" do
+            expect(page).to have_content("Q1 - Sale completion date", count: 1)
+            expect(page).to have_content("Q2 - Purchaser code", count: 1)
+            expect(page).to have_content("Q20 - Lead buyer’s age", count: 1)
+            expect(page).to have_content("Q21 - Buyer 1’s gender identity", count: 1)
+            expect(page).to have_content("Q25 - Buyer 1's working situation", count: 1)
+            expect(page).to have_content("Q15 - Postcode", count: 1)
+            expect(page).to have_link("Change", count: 6)
+            expect(page).to have_link("Change", href: "/sales-logs/#{sales_log.id}/purchaser-code?original_log_id=#{sales_log.id}&referrer=interruption_screen")
+          end
+
+          it "displays buttons to return to log" do
+            expect(page).to have_link("Back to Log #{sales_log.id}", href: "/sales-logs/#{sales_log.id}")
+          end
+
+          it "displays no duplicates banner" do
+            expect(page).to have_content("This log had the same answers but it is no longer a duplicate. Make sure the answers are correct.")
+          end
+        end
+      end
     end
   end