Add ID to FHIR vaccination record

This will be used for updates.

Jira-Issue: MAV-1012

Author: misaka

app/lib/fhir_mapper/vaccination_record.rb

@@ -9,7 +9,7 @@ def initialize(vaccination_record)
     end
 
     def fhir_record
-      immunisation = FHIR::Immunization.new
+      immunisation = FHIR::Immunization.new(id: nhs_immunisations_api_id)
 
       if performed_by_user.present?
         immunisation.contained << performed_by_user.fhir_practitioner(

spec/lib/fhir_mapper/vaccination_record_spec.rb

@@ -13,6 +13,7 @@
   let(:session) { patient_session.session }
   let(:vaccination_outcome) { :administered }
   let(:vaccine) { vaccination_record.vaccine }
+  let(:nhs_immunisations_api_id) { nil }
   let(:vaccination_record) do
     create(
       :vaccination_record,
@@ -21,7 +22,8 @@
       programme:,
       session:,
       vaccine: programme.active_vaccines.first,
-      outcome: vaccination_outcome
+      outcome: vaccination_outcome,
+      nhs_immunisations_api_id:
     )
   end
   let(:user) { vaccination_record.performed_by_user }
@@ -33,6 +35,20 @@
     #   expect(immunisation_fhir.to_hash).to eq fhir_immunisation_json(patient:)
     # end
 
+    describe "id" do
+      subject { immunisation_fhir.id }
+
+      context "when the vaccination record no UUID" do
+        it { should be_nil }
+      end
+
+      context "when the vaccination record has a UUID" do
+        let(:nhs_immunisations_api_id) { "1212-1212-1212-121212121212" }
+
+        it { should eq "1212-1212-1212-121212121212" }
+      end
+    end
+
     describe "contained patient" do
       subject { immunisation_fhir.contained.find { it.id == "Patient1" } }