Add collection start date

app/models/form_handler.rb

@@ -49,6 +49,10 @@ class FormHandler
     today < window_end_date ? today.year - 1 : today.year
   end
 
+  def current_collection_start_date
+    Time.utc(current_collection_start_year, 4, 5)
+  end
+
   def form_name_from_start_year(year, type)
     form_mappings = { 0 => "current_#{type}", 1 => "previous_#{type}", -1 => "next_#{type}" }
     form_mappings[current_collection_start_year - year]

app/views/locations/toggle_active.html.erb

@@ -12,15 +12,16 @@
 <%= form_with model: @location, url: scheme_location_deactivate_path(scheme_id: @location.scheme.id, location_id: @location.id), method: "patch", local: true do |f| %>
   <div class="govuk-grid-row">
     <div class="govuk-grid-column-two-thirds">
+    <% collection_start_date = FormHandler.instance.current_collection_start_date %>
     <%= f.govuk_error_summary %>
         <%= f.govuk_radio_buttons_fieldset :deactivation_date,
                                             legend: { text: I18n.t("questions.location.deactivation.apply_from")},
                                             caption: { text: "Deactivate #{@location.postcode}"},
-                                            hint: { text: I18n.t("hints.location.deactivation")} do %>
+                                            hint: { text: I18n.t("hints.location.deactivation", date: collection_start_date.to_formatted_s(:govuk_date))} do %>
             <%= govuk_warning_text text: I18n.t("warnings.location.deactivation.existing_logs") %>
             <%= f.govuk_radio_button :deactivation_date,
-                                        Time.now(),
-                                        label: { text: "From the start of the current collection period (5 April 2022)" } %>
+                                        collection_start_date,
+                                        label: { text: "From the start of the current collection period (#{collection_start_date.to_formatted_s(:govuk_date)})" } %>
 
             <%= f.govuk_radio_button :deactivation_date,
                                         "other",

config/locales/en.yml

@@ -382,7 +382,7 @@ en:
       postcode: "For example, SW1P 4DF."
       name: "This is how you refer to this location within your organisation"
       units: "A unit can be a bedroom in a shared house or flat, or a house with 4 bedrooms. Do not include bedrooms used for wardens, managers, volunteers or sleep-in staff."
-      deactivation: "If the date is before 5 April 2022, select ‘From the start of the current collection period’ because the previous period has now closed."
+      deactivation: "If the date is before %{date}, select ‘From the start of the current collection period’ because the previous period has now closed."
   
   warnings:
     location:

spec/models/form_handler_spec.rb

@@ -118,6 +118,10 @@ RSpec.describe FormHandler do
       it "returns the correct next sales form name" do
         expect(form_handler.form_name_from_start_year(2023, "sales")).to eq("next_sales")
       end
+
+      it "returns the correct current start date" do
+        expect(form_handler.current_collection_start_date).to eq(Time.utc(2022, 4, 5))
+      end
     end
 
     context "with the date before 1st of April" do