Add upcoming deadlines section

app/helpers/collection_time_helper.rb

@@ -45,4 +45,23 @@ module CollectionTimeHelper
   def previous_collection_start_date
     current_collection_start_date - 1.year
   end
+
+  def quarter_for_date(date: Time.zone.now)
+    quarters = [
+      { cutoff_date: Time.zone.local(2024, 1, 12), start_date: Time.zone.local(2023, 10, 1), end_date: Time.zone.local(2023, 12, 31) },
+      { cutoff_date: Time.zone.local(2024, 7, 12), start_date: Time.zone.local(2024, 4, 1), end_date: Time.zone.local(2024, 6, 30) },
+      { cutoff_date: Time.zone.local(2024, 10, 11), start_date: Time.zone.local(2024, 7, 1), end_date: Time.zone.local(2024, 9, 30) },
+      { cutoff_date: Time.zone.local(2025, 1, 10), start_date: Time.zone.local(2024, 10, 1), end_date: Time.zone.local(2024, 12, 31) },
+    ]
+
+    quarter = quarters.find { |q| date.between?(q[:start_date], q[:cutoff_date] + 1.day) }
+
+    return unless quarter
+
+    OpenStruct.new(
+      cutoff_date: quarter[:cutoff_date],
+      quarter_start_date: quarter[:start_date],
+      quarter_end_date: quarter[:end_date],
+    )
+  end
 end

app/views/home/_upcoming_deadlines.html.erb

@@ -0,0 +1,16 @@
+<h1 class="govuk-heading-l">Upcoming deadlines</h1>
+<% current_quarter = quarter_for_date(date: Time.zone.now) %>
+<% if current_quarter.present? %>
+  <p class="govuk-body govuk-body-m"><strong>12 January 2024</strong>: Quarterly cut off date for tenancies and sales starting between 1 October 2023 and 31 December 2023.</p>
+<% end %>
+
+<% current_lettings_form = FormHandler.instance.current_lettings_form %>
+<p class="govuk-body govuk-body-m"><strong><%= current_lettings_form.submission_deadline.to_formatted_s(:govuk_date) %></strong>: Deadline to submit logs for tenancies starting between <%= collection_start_date(Time.zone.now).to_formatted_s(:govuk_date) %> to <%= collection_end_date(Time.zone.now).to_formatted_s(:govuk_date) %></p>
+<%= govuk_details(summary_text: "Quarterly cut-off dates for 2024 to 2025") do %>
+  <ul class="govuk-list govuk-list--bullet">
+    <li><strong>12 July 2024</strong>: Quarterly cut off date for tenancies and sales starting between 1 April 2024 and 30 June 2024</li>
+    <li><strong>11 Oct 2024</strong>: Quarterly cut off date for tenancies and sales starting between 1 July 2024 and 30 Sept 2024</li>
+    <li><strong>10 Jan 2025</strong>: Quarterly cut off date for tenancies and sales starting between 1 Oct 2024 and 31 Dec 2024</li>
+    <li><strong>6 June 2025</strong>: Deadline to submit logs for tenancies starting between 1 April 2024 to 31 March 2025 </li>
+  </ul>
+<% end %>

app/views/home/index.html.erb

@@ -2,5 +2,7 @@
 <div class="govuk-grid-row">
   <div class="govuk-grid-column-two-thirds">
     <%= render partial: "layouts/collection_resources" %>
+    <hr class="govuk-section-break govuk-section-break--visible govuk-section-break--m">
+    <%= render partial: "home/upcoming_deadlines" %>
   </div>
 </div>

spec/helpers/collection_time_helper_spec.rb

@@ -109,4 +109,34 @@ RSpec.describe CollectionTimeHelper do
       end
     end
   end
+
+  describe "#quarter_for_date" do
+    it "returns correct cutoff date for curent quarter" do
+      quarter = quarter_for_date(date: Time.zone.local(2023, 10, 1))
+      expect(quarter.cutoff_date).to eq(Time.zone.local(2024, 1, 12))
+      expect(quarter.quarter_start_date).to eq(Time.zone.local(2023, 10, 1))
+      expect(quarter.quarter_end_date).to eq(Time.zone.local(2023, 12, 31))
+    end
+
+    it "returns correct cutoff date for the first quarter of 2024/25" do
+      quarter = quarter_for_date(date: Time.zone.local(2024, 4, 1))
+      expect(quarter.cutoff_date).to eq(Time.zone.local(2024, 7, 12))
+      expect(quarter.quarter_start_date).to eq(Time.zone.local(2024, 4, 1))
+      expect(quarter.quarter_end_date).to eq(Time.zone.local(2024, 6, 30))
+    end
+
+    it "returns correct cutoff date for the second quarter of 2024/25" do
+      quarter = quarter_for_date(date: Time.zone.local(2024, 9, 30))
+      expect(quarter.cutoff_date).to eq(Time.zone.local(2024, 10, 11))
+      expect(quarter.quarter_start_date).to eq(Time.zone.local(2024, 7, 1))
+      expect(quarter.quarter_end_date).to eq(Time.zone.local(2024, 9, 30))
+    end
+
+    it "returns correct cutoff date for the third quarter of 2024/25" do
+      quarter = quarter_for_date(date: Time.zone.local(2024, 10, 25))
+      expect(quarter.cutoff_date).to eq(Time.zone.local(2025, 1, 10))
+      expect(quarter.quarter_start_date).to eq(Time.zone.local(2024, 10, 1))
+      expect(quarter.quarter_end_date).to eq(Time.zone.local(2024, 12, 31))
+    end
+  end
 end