class PatientNHSNumberLookupJob

# File app/jobs/patient_nhs_number_lookup_job.rb, line 9
def perform(patient)
  return if patient.nhs_number.present? && !patient.invalidated?

  pds_patient =
    PDS::Patient.search(
      family_name: patient.family_name,
      given_name: patient.given_name,
      date_of_birth: patient.date_of_birth,
      address_postcode: patient.address_postcode
    )

  return if pds_patient.nil?

  if (
       existing_patient =
         Patient
           .where.not(id: patient.id)
           .find_by(nhs_number: pds_patient.nhs_number)
     )
    PatientMerger.call(to_keep: existing_patient, to_destroy: patient)
    existing_patient.update_from_pds!(pds_patient)

    PDSSearchResult.create!(
      patient_id: existing_patient.id,
      step: :no_fuzzy_with_history_daily,
      result: :one_match,
      nhs_number: pds_patient.nhs_number
    )
  else
    patient.nhs_number = pds_patient.nhs_number
    patient.update_from_pds!(pds_patient)
    PDSSearchResult.create!(
      patient_id: patient.id,
      step: :no_fuzzy_with_history_daily,
      result: :one_match,
      nhs_number: pds_patient.nhs_number
    )
  end
end