Use find_each in reports

Where possible, this should improve the memory usage of the reporting.

Author: thomasleese

app/lib/reports/offline_session_exporter.rb

@@ -48,7 +48,7 @@ def add_vaccinations_sheet(package)
     workbook.add_worksheet(name: "Vaccinations") do |sheet|
       sheet.add_row(columns.map { _1.to_s.upcase })
 
-      patient_sessions.each do |patient_session|
+      patient_sessions.find_each do |patient_session|
         rows(patient_session:).each { |row| row.add_to(sheet:, cached_styles:) }
       end
 

app/lib/reports/programme_vaccinations_exporter.rb

@@ -12,7 +12,7 @@ def initialize(organisation:, programme:, start_date:, end_date:)
 
   def call
     CSV.generate(headers:, write_headers: true) do |csv|
-      vaccination_records.each do |vaccination_record|
+      vaccination_records.find_each do |vaccination_record|
         csv << row(vaccination_record:)
       end
     end

app/lib/reports/systm_one_exporter.rb

@@ -34,15 +34,13 @@ def initialize(organisation:, programme:, start_date:, end_date:)
 
   def call
     CSV.generate(headers:, write_headers: true) do |csv|
-      vaccination_records.each do |vaccination_record|
+      vaccination_records.find_each do |vaccination_record|
         csv << row(vaccination_record:)
       end
     end
   end
 
-  def self.call(*args, **kwargs)
-    new(*args, **kwargs).call
-  end
+  def self.call(...) = new(...).call
 
   private_class_method :new