Infer lettype

app/constants/db_enums.rb

@@ -740,4 +740,28 @@ module DbEnums
       "Supported Housing" => 2,
     }
   end
+
+  def self.org_type
+    {
+      "LA" => 1,
+      "PRP" => 2,
+    }
+  end
+
+  def self.lettype
+    {
+      "Social Rent General Needs PRP" => 1,
+      "Social Rent Supported Housing PRP" => 2,
+      "Social Rent General Needs LA" => 3,
+      "Social Rent Supported Housing LA" => 4,
+      "Affordable Rent General Needs PRP" => 5,
+      "Affordable Rent Supported Housing PRP" => 6,
+      "Affordable Rent General Needs LA" => 7,
+      "Affordable Rent Supported Housing LA" => 8,
+      "Intermediate Rent General Needs PRP" => 9,
+      "Intermediate Rent Supported Housing PRP" => 10,
+      "Intermediate Rent General Needs LA" => 11,
+      "Intermediate Rent Supported Housing LA" => 12,
+    }
+  end
 end

app/models/case_log.rb

@@ -111,8 +111,9 @@ class CaseLog < ApplicationRecord
   enum incref: DbEnums.polar, _suffix: true
   enum renttype: DbEnums.renttype, _suffix: true
   enum needstype: DbEnums.needstype, _suffix: true
+  enum lettype: DbEnums.lettype, _suffix: true
 
-  AUTOGENERATED_FIELDS = %w[id status created_at updated_at discarded_at renttype].freeze
+  AUTOGENERATED_FIELDS = %w[id status created_at updated_at discarded_at renttype lettype].freeze
   OPTIONAL_FIELDS = %w[do_you_know_the_postcode
                        do_you_know_the_local_authority
                        first_time_property_let_as_social_housing].freeze
@@ -191,6 +192,7 @@ private
     self.incref = 1 if net_income_known == "Prefer not to say"
     self.hhmemb = other_hhmemb + 1 if other_hhmemb.present?
     self.renttype = RENT_TYPE_MAPPING[rent_type]
+    self.lettype = "#{renttype} #{needstype} #{owning_organisation.org_type}" if renttype.present? && needstype.present? && owning_organisation.org_type.present?
   end
 
   def all_fields_completed?

app/models/organisation.rb

@@ -3,6 +3,9 @@ class Organisation < ApplicationRecord
   has_many :owned_case_logs, class_name: "CaseLog", foreign_key: "owning_organisation_id"
   has_many :managed_case_logs, class_name: "CaseLog", foreign_key: "managing_organisation_id"
 
+  include DbEnums
+  enum org_type: DbEnums.org_type, _suffix: true
+
   def case_logs
     CaseLog.for_organisation(self)
   end

docs/api/DLUHC-CORE-Data.v1.json

@@ -306,7 +306,6 @@
             "startertenancy": "No",
             "tenancylength": "No",
             "tenancy": "Secure (including flexible)",
-            "lettype": "Affordable Rent - General Needs",
             "landlord": "This landlord",
             "la": "Barnet",
             "previous_postcode": "NW1 5TY",

spec/factories/case_log.rb

@@ -52,7 +52,7 @@ FactoryBot.define do
       startertenancy { "No" }
       tenancylength { 5 }
       tenancy { "Secure (including flexible)" }
-      lettype { "Affordable Rent - General Needs" }
+      lettype { "Affordable Rent General Needs LA" }
       landlord { "This landlord" }
       previous_postcode { "SE2 6RT" }
       rsnvac { "Tenant abandoned property" }

spec/factories/organisation.rb

@@ -1,7 +1,7 @@
 FactoryBot.define do
   factory :organisation do
     name { "DLUHC" }
-    org_type { 1 }
+    org_type { "LA" }
     address_line1 { "2 Marsham Street" }
     address_line2 { "London" }
     postcode { "SW1P 4DF" }

spec/fixtures/complete_case_log.json

@@ -54,7 +54,6 @@
     "startertenancy": "No",
     "tenancylength": "5",
     "tenancy": "Secure (including flexible)",
-    "lettype": "Affordable Rent - General Needs",
     "landlord": "This landlord",
     "la": "Barnet",
     "property_postcode": "NW1 5TY",
@@ -126,9 +125,9 @@
     "property_owner_organisation": "",
     "property_manager_organisation": "",
     "sale_or_letting": "",
-    "rent_type": "",
+    "rent_type": "Social Rent",
     "intermediate_rent_product_name": "",
-    "needstype": "",
+    "needstype": "General Needs",
     "sale_completion_date": "01/01/2020",
     "purchaser_code": "",
     "propcode": "123",
@@ -143,7 +142,6 @@
     "property_wheelchair_accessible": "Yes",
     "void_or_renewal_date": "05/05/2020",
     "tenant_same_property_renewal": "Yes",
-    "new_build_handover_date": "01/01/2019",
+    "new_build_handover_date": "01/01/2019"
-    "renttype": 1
   }
 }

spec/models/case_log_spec.rb

@@ -838,7 +838,7 @@ RSpec.describe Form, type: :model do
 
   describe "derived variables" do
     require "date"
-    let(:organisation) { FactoryBot.create(:organisation) }
+    let(:organisation) { FactoryBot.create(:organisation, org_type: "PRP") }
     let!(:case_log) do
       CaseLog.create({
         managing_organisation: organisation,
@@ -851,6 +851,7 @@ RSpec.describe Form, type: :model do
         net_income_known: "Prefer not to say",
         other_hhmemb: 6,
         rent_type: "London Living Rent",
+        needstype: "General Needs",
       })
     end
 
@@ -903,5 +904,13 @@ RSpec.describe Form, type: :model do
       expect(case_log.renttype).to eq("Intermediate Rent")
       expect(record_from_db["renttype"]).to eq(3)
     end
+
+    it "correctly derives and saves lettype" do
+      case_log.reload
+
+      record_from_db = ActiveRecord::Base.connection.execute("select lettype from case_logs where id=#{case_log.id}").to_a[0]
+      expect(case_log.lettype).to eq("Intermediate Rent General Needs PRP")
+      expect(record_from_db["lettype"]).to eq(9)
+    end
   end
 end