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# frozen_string_literal: true
require_dependency "renalware/ukrdc"
module Renalware
module UKRDC
# If the optional :changed_since argument is passed we select all RPV
# patients how have been updated since that date. Otherwise we select all RPV
# patients who have changed since the last time they were exported.
# A patient has a sent_to_ukrdc_at datetime which is the last time the data was actually sent.
# It maybe be that something about the patient has changed and updated_at > sent_to_ukrdc_at
# however when compiled to xml there are no effective changes, for example because some notes
# were added somewhere on the patient's data but those notes don't make it into the XML. So
# therefore no effective changes and we don't send the file to UKRDC.
# However a downside of this approach is that we always find updated patients and generate
# an XML for them, in order to compare an MD5 hash of the XML with what was previously sent, and
# *sometimes* this is waste of time if the MD5 hash has not changed. However we will live with
# this for now I think. If it is a problem we can use the checked_for_ukrdc_changes_at column
# on patients.
class PatientsQuery
def call(changed_since: nil)
if changed_since.present?
rpv_patients.where("updated_at > ?", changed_since)
else
rpv_patients.where("(sent_to_ukrdc_at is null) or (updated_at > sent_to_ukrdc_at)")
end
end
private
def rpv_patients
Renalware::Patient.where(send_to_rpv: true)
end
end
end
end
Version data entries
27 entries across 27 versions & 1 rubygems