CLDC-2065 Bulk upload error summary minimum limit (#1347)

* bulk upload error summary min limit

- the errors summary table only show errors for column where there
  at least 16 errors for that column
- if there are fewer than 16 errors that can see detailed report to pin
  point and fix those specific issues

* add #errors? to summary component

* show full error report if not enough errors

- if errors summary table is empty as below threshold
- send users to full report
- remove the back button so they cannot access summary report

* add upload again cta otherwise a dead end

app/components/bulk_upload_error_summary_table_component.rb

@@ -1,4 +1,6 @@
 class BulkUploadErrorSummaryTableComponent < ViewComponent::Base
+  DISPLAY_THRESHOLD = 16
+
   attr_reader :bulk_upload
 
   def initialize(bulk_upload:)
@@ -11,7 +13,18 @@ class BulkUploadErrorSummaryTableComponent < ViewComponent::Base
     @sorted_errors ||= bulk_upload
       .bulk_upload_errors
       .group(:col, :field, :error)
+      .having("count(*) > ?", display_threshold)
       .count
       .sort_by { |el| el[0][0].rjust(3, "0") }
   end
+
+  def errors?
+    sorted_errors.present?
+  end
+
+private
+
+  def display_threshold
+    DISPLAY_THRESHOLD
+  end
 end

app/mailers/bulk_upload_mailer.rb

@@ -46,6 +46,12 @@ class BulkUploadMailer < NotifyMailer
   def send_correct_and_upload_again_mail(bulk_upload:)
     error_description = "We noticed that you have a lot of similar errors in column #{columns_with_errors(bulk_upload:)}. Please correct your data export and upload again."
 
+    summary_report_link = if BulkUploadErrorSummaryTableComponent.new(bulk_upload:).errors?
+                            summary_bulk_upload_lettings_result_url(bulk_upload)
+                          else
+                            bulk_upload_lettings_result_url(bulk_upload)
+                          end
+
     send_email(
       bulk_upload.user.email,
       BULK_UPLOAD_FAILED_CSV_ERRORS_TEMPLATE_ID,
@@ -55,7 +61,7 @@ class BulkUploadMailer < NotifyMailer
         year_combo: bulk_upload.year_combo,
         lettings_or_sales: bulk_upload.log_type,
         error_description:,
-        summary_report_link: summary_bulk_upload_lettings_result_url(bulk_upload),
+        summary_report_link:,
       },
     )
   end

app/views/bulk_upload_lettings_results/show.html.erb

@@ -1,5 +1,7 @@
-<% content_for :before_content do %>
-  <%= govuk_back_link(text: "Back", href: summary_bulk_upload_lettings_result_path(@bulk_upload)) %>
+<% if BulkUploadErrorSummaryTableComponent.new(bulk_upload: @bulk_upload).errors? %>
+  <% content_for :before_content do %>
+    <%= govuk_back_link(text: "Back", href: summary_bulk_upload_lettings_result_path(@bulk_upload)) %>
+  <% end %>
 <% end %>
 
 <div class="govuk-grid-row">
@@ -22,3 +24,5 @@
     <% end %>
   </div>
 </div>
+
+<%= govuk_button_link_to "Upload your file again", start_bulk_upload_lettings_logs_path %>

spec/components/bulk_upload_error_summary_table_component_spec.rb

@@ -5,6 +5,10 @@ RSpec.describe BulkUploadErrorSummaryTableComponent, type: :component do
 
   let(:bulk_upload) { create(:bulk_upload) }
 
+  before do
+    stub_const("BulkUploadErrorSummaryTableComponent::DISPLAY_THRESHOLD", 0)
+  end
+
   context "when no errors" do
     it "does not renders any rows" do
       result = render_inline(component)
@@ -12,6 +16,19 @@ RSpec.describe BulkUploadErrorSummaryTableComponent, type: :component do
     end
   end
 
+  context "when below threshold" do
+    before do
+      stub_const("BulkUploadErrorSummaryTableComponent::DISPLAY_THRESHOLD", 16)
+
+      create(:bulk_upload_error, bulk_upload:, col: "A", row: 1)
+    end
+
+    it "does not render rows" do
+      result = render_inline(component)
+      expect(result).to have_selector("tbody tr", count: 0)
+    end
+  end
+
   context "when there are 2 independent errors" do
     let!(:error_2) { create(:bulk_upload_error, bulk_upload:, col: "B", row: 2) }
     let!(:error_1) { create(:bulk_upload_error, bulk_upload:, col: "A", row: 1) }
@@ -78,4 +95,22 @@ RSpec.describe BulkUploadErrorSummaryTableComponent, type: :component do
       ])
     end
   end
+
+  describe "#errors?" do
+    context "when there are no errors" do
+      it "returns false" do
+        expect(component).not_to be_errors
+      end
+    end
+
+    context "when there are errors" do
+      before do
+        create(:bulk_upload_error, bulk_upload:, col: "A", row: 2, field: "field_1")
+      end
+
+      it "returns true" do
+        expect(component).to be_errors
+      end
+    end
+  end
 end

spec/mailers/bulk_upload_mailer_spec.rb

@@ -93,7 +93,7 @@ RSpec.describe BulkUploadMailer do
             year_combo: bulk_upload.year_combo,
             lettings_or_sales: bulk_upload.log_type,
             error_description: "We noticed that you have a lot of similar errors in column A, B. Please correct your data export and upload again.",
-            summary_report_link: "http://localhost:3000/lettings-logs/bulk-upload-results/#{bulk_upload.id}/summary",
+            summary_report_link: "http://localhost:3000/lettings-logs/bulk-upload-results/#{bulk_upload.id}",
           },
         )
 
@@ -103,6 +103,8 @@ RSpec.describe BulkUploadMailer do
 
     context "when 4 columns with errors" do
       before do
+        stub_const("BulkUploadErrorSummaryTableComponent::DISPLAY_THRESHOLD", 0)
+
         create(:bulk_upload_error, bulk_upload:, col: "A")
         create(:bulk_upload_error, bulk_upload:, col: "B")
         create(:bulk_upload_error, bulk_upload:, col: "C")