Add note on csv upload

When the fraud risk csv is uploaded add notes to any claims with
matching details.

app/forms/admin/fraud_risk_csv_upload_form.rb

@@ -21,6 +21,10 @@ def save
         RiskIndicator.where.not(id: records.map(&:id)).destroy_all
 
         records.each(&:save!)
+
+        claims_to_note.each do |claim|
+          AutomatedChecks::ClaimVerifiers::FraudRisk.new(claim: claim).perform
+        end
       end
 
       true
@@ -53,5 +57,21 @@ def csv_has_required_headers
     def csv_has_required_headers?
       csv.headers.include?("field") && csv.headers.include?("value")
     end
+
+    def claims_to_note
+      flagged_eligibility_claim_ids = Policies.with_attribute(:teacher_reference_number).flat_map do |policy|
+        policy::Eligibility
+          .where(teacher_reference_number: RiskIndicator.teacher_reference_number.select(:value))
+          .joins(:claim)
+          .select("claims.id")
+      end
+
+      Claim
+        .where(
+          "LOWER(national_insurance_number) IN (?)",
+          RiskIndicator.national_insurance_number.select("LOWER(value)")
+        )
+        .or(Claim.where(id: flagged_eligibility_claim_ids))
+    end
   end
 end

app/models/policies.rb

@@ -36,4 +36,8 @@ def self.[](policy_type)
   def self.constantize(policy)
     "Policies::#{policy}".constantize
   end
+
+  def self.with_attribute(attr)
+    POLICIES.select { |policy| policy::Eligibility.has_attribute?(attr) }
+  end
 end

app/models/risk_indicator.rb

@@ -4,6 +4,8 @@ class RiskIndicator < ApplicationRecord
     national_insurance_number
   ].freeze
 
+  enum field: SUPPORTED_FIELDS.index_by(&:itself)
+
   validates :field, presence: {
     message: "'field' can't be blank"
   }

spec/features/admin/admin_fraud_prevention_spec.rb

@@ -93,6 +93,34 @@
         "This claim cannot be approved because the national insurance number " \
         "and teacher reference number are included on the fraud prevention list."
       )
+
+      visit admin_claim_notes_path(flagged_claim_trn)
+
+      within(".hmcts-timeline:first-of-type") do
+        expect(page).to have_content(
+          "This claim has been flagged as the " \
+          "teacher reference number is included on the fraud prevention list."
+        )
+      end
+
+      visit admin_claim_notes_path(flagged_claim_nino)
+
+      within(".hmcts-timeline:first-of-type") do
+        expect(page).to have_content(
+          "This claim has been flagged as the " \
+          "national insurance number is included on the fraud prevention list."
+        )
+      end
+
+      visit admin_claim_notes_path(flagged_claim_trn_and_nino)
+
+      within(".hmcts-timeline:first-of-type") do
+        expect(page).to have_content(
+          "This claim has been flagged as the " \
+          "national insurance number and teacher reference number are included " \
+          "on the fraud prevention list."
+        )
+      end
     end
   end
 

spec/forms/admin/fraud_risk_csv_upload_form_spec.rb

@@ -136,5 +136,47 @@
         )
       ).to exist
     end
+
+    it "adds a note to claims that are flagged" do
+      claim_1 = create(:claim, national_insurance_number: "qq123456c")
+
+      claim_2 = create(
+        :claim,
+        eligibility_attributes: {teacher_reference_number: "1234567"}
+      )
+
+      claim_3 = create(
+        :claim,
+        national_insurance_number: "qq123456c",
+        eligibility_attributes: {teacher_reference_number: "1234567"}
+      )
+
+      form.save
+
+      expect(claim_1.notes.by_label("fraud_risk").last.body).to eq(
+        "This claim has been flagged as the national insurance number is " \
+        "included on the fraud prevention list."
+      )
+
+      expect(claim_2.notes.by_label("fraud_risk").last.body).to eq(
+        "This claim has been flagged as the teacher reference number is " \
+        "included on the fraud prevention list."
+      )
+
+      expect(claim_3.notes.by_label("fraud_risk").last.body).to eq(
+        "This claim has been flagged as the national insurance number and " \
+        "teacher reference number are included on the fraud prevention list."
+      )
+    end
+
+    it "doesn't add a note to claims that aren't flagged" do
+      claim = create(
+        :claim,
+        national_insurance_number: "qq123456d",
+        eligibility_attributes: {teacher_reference_number: "1234568"}
+      )
+
+      expect { form.save }.not_to change { claim.notes.count }
+    end
   end
 end