Ensure already vaccinated patients don't receive clinic invitations

This fixes an issue where patients who are invited to a clinic, and are
vaccinated for some of the programmes but not all of them, were
receiving an email/text for all the programmes they're eligible for
rather than just the programmes they are eligible for and need a
vaccination for.

Jira-Issue: MAV-1994

Author: thomasleese

app/models/session_notification.rb

@@ -102,7 +102,11 @@ def self.create_and_send!(
             )
           end
       else
-        session.programmes_for(patient:)
+        session
+          .programmes_for(patient:)
+          .reject do |programme|
+            patient.vaccination_status(programme:, academic_year:).vaccinated?
+          end
       end
 
     parents.each do |parent|

spec/models/session_notification_spec.rb

@@ -173,6 +173,41 @@
               )
       end
 
+      context "when the session administers two programmes but the patient only needs one" do
+        let(:programmes) do
+          [create(:programme, :flu), create(:programme, :hpv)]
+        end
+
+        before do
+          create(:vaccination_record, patient:, programme: programmes.first)
+          StatusUpdater.call(patient:)
+        end
+
+        it "only sends emails for the remaining programme" do
+          expect { create_and_send! }.to have_delivered_email(
+            :session_clinic_initial_invitation
+          ).with(
+            parent: parents.first,
+            patient:,
+            programmes: [programmes.second],
+            session:,
+            sent_by: current_user
+          )
+        end
+
+        it "enqueues a text per parent" do
+          expect { create_and_send! }.to have_delivered_sms(
+            :session_clinic_initial_invitation
+          ).with(
+            parent: parents.first,
+            patient:,
+            programmes: [programmes.second],
+            session:,
+            sent_by: current_user
+          )
+        end
+      end
+
       context "when the team is Coventry & Warwickshire Partnership NHS Trust (CWPT)" do
         let(:team) { create(:team, ods_code: "RYG", programmes:) }