Avoid variable number of columns during CSV export (#614)

app/services/exports/case_log_export_constants.rb

@@ -2,6 +2,11 @@ module Exports::CaseLogExportConstants
   MAX_XML_RECORDS = 10_000
   LOG_ID_OFFSET = 300_000_000_000
 
+  EXPORT_MODE = {
+    xml: 1,
+    csv: 2,
+  }.freeze
+
   QUARTERS = {
     0 => "jan_mar",
     1 => "apr_jun",

app/services/exports/case_log_export_service.rb

@@ -150,17 +150,18 @@ module Exports
       xml_doc_to_temp_file(doc)
     end
 
-    def apply_cds_transformation(case_log)
+    def apply_cds_transformation(case_log, export_mode)
       attribute_hash = case_log.attributes_before_type_cast
-
       attribute_hash["form"] = attribute_hash["old_form_id"] || (attribute_hash["id"] + LOG_ID_OFFSET)
 
-      # Changes specific to collection start year
-      if case_log.collection_start_year == 2021
-        attribute_hash.delete("joint")
-      end
-      if case_log.collection_start_year == 2022
-        attribute_hash.delete("underoccupation_benefitcap")
+      # We can't have a variable number of columns in CSV
+      unless export_mode == EXPORT_MODE[:csv]
+        case case_log.collection_start_year
+        when 2021
+          attribute_hash.delete("joint")
+        when 2022
+          attribute_hash.delete("underoccupation_benefitcap")
+        end
       end
 
       # Organisation fields
@@ -205,7 +206,7 @@ module Exports
       csv_io = CSV.generate do |csv|
         attribute_keys = nil
         case_logs.each do |case_log|
-          attribute_hash = apply_cds_transformation(case_log)
+          attribute_hash = apply_cds_transformation(case_log, EXPORT_MODE[:csv])
           if attribute_keys.nil?
             attribute_keys = attribute_hash.keys
             filter_keys!(attribute_keys)
@@ -222,7 +223,7 @@ module Exports
       doc = Nokogiri::XML("<forms/>")
 
       case_logs.each do |case_log|
-        attribute_hash = apply_cds_transformation(case_log)
+        attribute_hash = apply_cds_transformation(case_log, EXPORT_MODE[:xml])
         form = doc.create_element("form")
         doc.at("forms") << form
         attribute_hash.each do |key, value|

spec/fixtures/exports/case_logs.csv

@@ -1,2 +1,2 @@
-status,age1,sex1,ethnic,national,prevten,ecstat1,hhmemb,age2,sex2,ecstat2,age3,sex3,ecstat3,age4,sex4,ecstat4,age5,sex5,ecstat5,age6,sex6,ecstat6,age7,sex7,ecstat7,age8,sex8,ecstat8,homeless,underoccupation_benefitcap,leftreg,reservist,illness,preg_occ,startertenancy,tenancylength,tenancy,ppostcode_full,rsnvac,unittype_gn,beds,offered,wchair,earnings,incfreq,benefits,period,layear,waityear,postcode_full,reasonpref,cbl,chr,cap,reasonother,housingneeds_a,housingneeds_b,housingneeds_c,housingneeds_f,housingneeds_g,housingneeds_h,illness_type_1,illness_type_2,illness_type_3,illness_type_4,illness_type_8,illness_type_5,illness_type_6,illness_type_7,illness_type_9,illness_type_10,rp_homeless,rp_insan_unsat,rp_medwel,rp_hardship,rp_dontknow,tenancyother,irproduct_other,reason,propcode,la,prevloc,hb,hbrentshortfall,mrcdate,incref,startdate,armedforces,unitletas,builtype,voiddate,renttype,needstype,lettype,totchild,totelder,totadult,nocharge,referral,brent,scharge,pscharge,supcharg,tcharge,tshortfall,chcharge,has_benefits,renewal,wrent,wscharge,wpschrge,wsupchrg,wtcharge,wtshortfall,refused,housingneeds,wchchrg,newprop,relat2,relat3,relat4,relat5,relat6,relat7,relat8,lar,irproduct,shelteredaccom,form,owningorgid,owningorgname,hcnum,maningorgid,maningorgname,manhcnum,createddate,uploaddate,tenancycode,ppcodenk
-2,35,F,2,4,6,0,2,32,M,6,,,,,,,,,,,,,,,,,,,1,0,1,0,1,2,0,5,1,SE26RT,6,7,3,2,1,68,1,1,2,2,1,NW15TY,1,1,1,0,,1,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,,,4,123,E09000003,E07000105,6,1,2020-05-05 10:36:49 UTC,0,2022-02-02 10:36:49 UTC,1,2,1,2019-11-03 00:00:00 UTC,2,1,7,0,0,2,0,,200.0,50.0,40.0,35.0,325.0,12.0,,1,0,100.0,25.0,20.0,17.5,162.5,6.0,0,1,,2,P,,,,,,,,,0,{id},{owning_org_id},DLUHC,1234,{managing_org_id},DLUHC,1234,2022-02-08 16:52:15 UTC,2022-02-08 16:52:15 UTC,BZ757,1
+status,age1,sex1,ethnic,national,prevten,ecstat1,hhmemb,age2,sex2,ecstat2,age3,sex3,ecstat3,age4,sex4,ecstat4,age5,sex5,ecstat5,age6,sex6,ecstat6,age7,sex7,ecstat7,age8,sex8,ecstat8,homeless,underoccupation_benefitcap,leftreg,reservist,illness,preg_occ,startertenancy,tenancylength,tenancy,ppostcode_full,rsnvac,unittype_gn,beds,offered,wchair,earnings,incfreq,benefits,period,layear,waityear,postcode_full,reasonpref,cbl,chr,cap,reasonother,housingneeds_a,housingneeds_b,housingneeds_c,housingneeds_f,housingneeds_g,housingneeds_h,illness_type_1,illness_type_2,illness_type_3,illness_type_4,illness_type_8,illness_type_5,illness_type_6,illness_type_7,illness_type_9,illness_type_10,rp_homeless,rp_insan_unsat,rp_medwel,rp_hardship,rp_dontknow,tenancyother,irproduct_other,reason,propcode,la,prevloc,hb,hbrentshortfall,mrcdate,incref,startdate,armedforces,unitletas,builtype,voiddate,renttype,needstype,lettype,totchild,totelder,totadult,nocharge,referral,brent,scharge,pscharge,supcharg,tcharge,tshortfall,chcharge,has_benefits,renewal,wrent,wscharge,wpschrge,wsupchrg,wtcharge,wtshortfall,refused,housingneeds,wchchrg,newprop,relat2,relat3,relat4,relat5,relat6,relat7,relat8,lar,irproduct,joint,shelteredaccom,form,owningorgid,owningorgname,hcnum,maningorgid,maningorgname,manhcnum,createddate,uploaddate,tenancycode,ppcodenk
+2,35,F,2,4,6,0,2,32,M,6,,,,,,,,,,,,,,,,,,,1,0,1,0,1,2,0,5,1,SE26RT,6,7,3,2,1,68,1,1,2,2,1,NW15TY,1,1,1,0,,1,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,,,4,123,E09000003,E07000105,6,1,2020-05-05 10:36:49 UTC,0,2022-02-02 10:36:49 UTC,1,2,1,2019-11-03 00:00:00 UTC,2,1,7,0,0,2,0,,200.0,50.0,40.0,35.0,325.0,12.0,,1,0,100.0,25.0,20.0,17.5,162.5,6.0,0,1,,2,P,,,,,,,,,,0,{id},{owning_org_id},DLUHC,1234,{managing_org_id},DLUHC,1234,2022-02-08 16:52:15 UTC,2022-02-08 16:52:15 UTC,BZ757,1