feat: use startdate instead to track merges on schemes and locations

app/models/location.rb

@@ -21,9 +21,9 @@ class Location < ApplicationRecord
   scope :search_by_postcode, ->(postcode) { where("REPLACE(postcode, ' ', '') ILIKE ?", "%#{postcode.delete(' ')}%") }
   scope :search_by_name, ->(name) { where("name ILIKE ?", "%#{name}%") }
   scope :search_by, ->(param) { search_by_name(param).or(search_by_postcode(param)) }
-  scope :started, -> { where("startdate <= ?", Time.zone.today).or(where(startdate: nil)) }
+  scope :started, -> { where("locations.startdate <= ?", Time.zone.today).or(where(startdate: nil)) }
   scope :active, -> { where(confirmed: true).and(started) }
-  scope :started_in_2_weeks, -> { where("startdate <= ?", Time.zone.today + 2.weeks).or(where(startdate: nil)) }
+  scope :started_in_2_weeks, -> { where("locations.startdate <= ?", Time.zone.today + 2.weeks).or(where(startdate: nil)) }
   scope :active_in_2_weeks, -> { where(confirmed: true).and(started_in_2_weeks) }
   scope :confirmed, -> { where(confirmed: true) }
   scope :unconfirmed, -> { where.not(confirmed: true) }
@@ -122,7 +122,7 @@ class Location < ApplicationRecord
   end
 
   def available_from
-    [merge_date, startdate].compact.max || FormHandler.instance.earliest_open_collection_start_date(now: created_at)
+    startdate || FormHandler.instance.earliest_open_collection_start_date(now: created_at)
   end
 
   def open_deactivation

app/models/scheme.rb

@@ -243,7 +243,7 @@ class Scheme < ApplicationRecord
   end
 
   def validate_confirmed
-    required_attributes = attribute_names - %w[id created_at updated_at old_id old_visible_id confirmed end_date sensitive secondary_client_group total_units deactivation_date deactivation_date_type merge_date]
+    required_attributes = attribute_names - %w[id created_at updated_at old_id old_visible_id confirmed end_date sensitive secondary_client_group total_units deactivation_date deactivation_date_type startdate]
 
     if confirmed == true
       required_attributes.any? do |attribute|
@@ -262,7 +262,7 @@ class Scheme < ApplicationRecord
   end
 
   def available_from
-    merge_date || FormHandler.instance.earliest_open_collection_start_date(now: created_at)
+    startdate || FormHandler.instance.earliest_open_collection_start_date(now: created_at)
   end
 
   def open_deactivation
@@ -282,6 +282,7 @@ class Scheme < ApplicationRecord
     return :deactivated if open_deactivation&.deactivation_date.present? && date >= open_deactivation.deactivation_date
     return :deactivating_soon if open_deactivation&.deactivation_date.present? && date < open_deactivation.deactivation_date
     return :reactivating_soon if last_deactivation_before(date)&.reactivation_date.present? && date < last_deactivation_before(date).reactivation_date
+    return :activating_soon if startdate.present? && date < startdate
 
     :active
   end

app/services/merge/merge_organisations_service.rb

@@ -69,9 +69,9 @@ private
     merging_organisation.owned_schemes.each do |scheme|
       next if scheme.deactivated?
 
-      new_scheme = Scheme.create!(scheme.attributes.except("id", "owning_organisation_id", "old_id", "old_visible_id").merge(owning_organisation: @absorbing_organisation, merge_date: @merge_date))
+      new_scheme = Scheme.create!(scheme.attributes.except("id", "owning_organisation_id", "old_id", "old_visible_id").merge(owning_organisation: @absorbing_organisation, startdate: @merge_date))
       scheme.locations.each do |location|
-        new_scheme.locations << Location.new(location.attributes.except("id", "scheme_id", "old_id", "old_visible_id").merge(merge_date: @merge_date)) unless location.deactivated?
+        new_scheme.locations << Location.new(location.attributes.except("id", "scheme_id", "old_id", "old_visible_id").merge(startdate: [location&.startdate, @merge_date].compact.max)) unless location.deactivated?
       end
       @merged_schemes[merging_organisation.name] << { name: new_scheme.service_name, code: new_scheme.id }
       SchemeDeactivationPeriod.create!(scheme:, deactivation_date: @merge_date)

db/migrate/20231127120659_add_merge_date_to_schemes.rb

@@ -1,5 +0,0 @@
-class AddMergeDateToSchemes < ActiveRecord::Migration[7.0]
-  def change
-    add_column :schemes, :merge_date, :datetime
-  end
-end

db/migrate/20231127125729_add_merge_date_to_locations.rb

@@ -1,5 +0,0 @@
-class AddMergeDateToLocations < ActiveRecord::Migration[7.0]
-  def change
-    add_column :locations, :merge_date, :datetime
-  end
-end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_11_27_125729) do
+ActiveRecord::Schema[7.0].define(version: 2023_12_04_101105) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -355,7 +355,6 @@ ActiveRecord::Schema[7.0].define(version: 2023_11_27_125729) do
     t.datetime "startdate"
     t.string "location_admin_district"
     t.boolean "confirmed"
-    t.datetime "merge_date"
     t.index ["old_id"], name: "index_locations_on_old_id", unique: true
     t.index ["scheme_id"], name: "index_locations_on_scheme_id"
   end
@@ -660,7 +659,7 @@ ActiveRecord::Schema[7.0].define(version: 2023_11_27_125729) do
     t.string "old_visible_id"
     t.integer "total_units"
     t.boolean "confirmed"
-    t.datetime "merge_date"
+    t.datetime "startdate"
     t.index ["owning_organisation_id"], name: "index_schemes_on_owning_organisation_id"
   end
 

spec/helpers/locations_helper_spec.rb

@@ -216,31 +216,11 @@ RSpec.describe LocationsHelper do
         end
 
         context "when location was merged" do
-          context "when there is no startdate" do
-            it "displays merge date as availability date" do
-              location.update!(merge_date: Time.zone.local(2022, 4, 16))
-              availability_attribute = display_location_attributes(location).find { |x| x[:name] == "Availability" }[:value]
-
-              expect(availability_attribute).to eq("Active from 16 April 2022")
-            end
-          end
-
-          context "when the startdate is before the merge date" do
-            it "displays merge date as availability date" do
-              location.update!(startdate: Time.zone.local(2022, 4, 3), merge_date: Time.zone.local(2022, 4, 16))
-              availability_attribute = display_location_attributes(location).find { |x| x[:name] == "Availability" }[:value]
-
-              expect(availability_attribute).to eq("Active from 16 April 2022")
-            end
-          end
-
-          context "when the startdate is after the merge date" do
-            it "displays startdate as availability date" do
-              location.update!(startdate: Time.zone.local(2022, 5, 3), merge_date: Time.zone.local(2022, 4, 16))
-              availability_attribute = display_location_attributes(location).find { |x| x[:name] == "Availability" }[:value]
+          it "displays merge date as availability date" do
+            location.update!(startdate: Time.zone.local(2022, 4, 16))
+            availability_attribute = display_location_attributes(location).find { |x| x[:name] == "Availability" }[:value]
 
-              expect(availability_attribute).to eq("Active from 3 May 2022")
-            end
+            expect(availability_attribute).to eq("Active from 16 April 2022")
           end
         end
       end

spec/helpers/schemes_helper_spec.rb

@@ -307,7 +307,7 @@ RSpec.describe SchemesHelper do
     context "when scheme was merged from another organisation" do
       before do
         FactoryBot.create(:location, scheme:)
-        scheme.merge_date = Time.zone.local(2023, 1, 5)
+        scheme.startdate = Time.zone.local(2023, 1, 5)
       end
 
       it "returns correct availability" do