Add deadline text

app/frontend/styles/_red-link.scss

@@ -9,6 +9,10 @@
   color: govuk-colour("red");
 }
 
+.app-red-text {
+  color: govuk-colour("red");
+}
+
 .app-red-link:hover {
   color: govuk-shade(govuk-colour("red"), 20);
 }

app/helpers/collection_deadline_helper.rb

@@ -61,11 +61,12 @@ module CollectionDeadlineHelper
       first_quarter(year).merge(quarter: "Q1"),
       second_quarter(year).merge(quarter: "Q2"),
       third_quarter(year).merge(quarter: "Q3"),
+      fourth_quarter(year).merge(quarter: "Q4"),
     ]
   end
 
   def quarter_for_date(date: Time.zone.now)
-    quarters = quarter_dates(current_collection_start_year)
+    quarters = quarter_dates(collection_start_year_for_date(date))
 
     quarter = quarters.find { |q| date.between?(q[:start_date], q[:cutoff_date] + 1.day) }
 

app/helpers/tasklist_helper.rb

@@ -2,6 +2,7 @@ module TasklistHelper
   include GovukLinkHelper
   include GovukVisuallyHiddenHelper
   include CollectionTimeHelper
+  include CollectionDeadlineHelper
 
   def breadcrumb_logs_title(log, current_user)
     log_type = log.lettings? ? "Lettings" : "Sales"
@@ -70,6 +71,20 @@ module TasklistHelper
     status == :cannot_start_yet ? "" : "govuk-task-list__item--with-link"
   end
 
+  def deadline_text(log)
+    return if log.completed?
+    return if log.startdate.nil?
+
+    log_quarter = quarter_for_date(date: log.startdate)
+    deadline_for_log = log_quarter.cutoff_date
+
+    if deadline_for_log > Time.zone.now
+      "<p class=\"govuk-body\">Deadline: #{log_quarter.cutoff_date.strftime('%A %-d %B %Y')}.<p>".html_safe
+    else
+      "<p class=\"govuk-body app-red-text\"><strong>Overdue: #{log_quarter.quarter} deadline #{log_quarter.cutoff_date.strftime('%A %-d %B %Y')}.</strong></p>".html_safe
+    end
+  end
+
 private
 
   def breadcrumb_organisation(log)

app/views/logs/edit.html.erb

@@ -37,6 +37,7 @@
       </p>
     <% end %>
 
+    <%= deadline_text(@log) %>
     <%= render "tasklist" %>
 
     <%= edit_actions_for_log(@log, bulk_upload_filter_applied) %>

spec/helpers/tasklist_helper_spec.rb

@@ -204,4 +204,42 @@ RSpec.describe TasklistHelper do
       end
     end
   end
+
+  describe "deadline text" do
+    context "when log does not have a sale/start date" do
+      let(:log) { build(:sales_log, saledate: nil) }
+
+      it "returns nil" do
+        expect(deadline_text(log)).to be_nil
+      end
+    end
+
+    context "when log is completed" do
+      let(:log) { build(:sales_log, :completed, status: "completed") }
+
+      it "returns nil" do
+        expect(deadline_text(log)).to be_nil
+      end
+    end
+
+    context "when today is before the deadline for log with sale/start date" do
+      let(:log) { build(:sales_log, saledate: Time.zone.local(2025, 6, 1)) }
+
+      it "returns the deadline text" do
+        allow(Time.zone).to receive(:now).and_return(Time.zone.local(2025, 5, 7))
+        allow(Time.zone).to receive(:today).and_return(Time.zone.local(2025, 5, 7))
+        expect(deadline_text(log)).to include("Deadline: ")
+      end
+    end
+
+    context "when today is after the deadline for log with sale/start date" do
+      let(:log) { build(:sales_log, saledate: Time.zone.local(2025, 2, 1)) }
+
+      it "returns the overdue text" do
+        allow(Time.zone).to receive(:now).and_return(Time.zone.local(2025, 6, 7))
+        allow(Time.zone).to receive(:today).and_return(Time.zone.local(2025, 6, 7))
+        expect(deadline_text(log)).to include("Overdue: ")
+      end
+    end
+  end
 end