Return unknown operation_details in parser

lib/cfonb.rb

@@ -32,6 +32,7 @@
 require_relative 'cfonb/operation_details/ibe'
 require_relative 'cfonb/operation_details/npo'
 require_relative 'cfonb/operation_details/nbu'
+require_relative 'cfonb/operation_details/unknown'
 
 module CFONB
   def self.parse(input, optimistic: false)

lib/cfonb/operation.rb

@@ -42,8 +42,9 @@ def initialize(line)
 
     def merge_detail(line)
       self.raw += "\n#{line.body}"
+      operation_details = OperationDetails.for(line) || OperationDetails::Unknown
 
-      OperationDetails.for(line)&.apply(details, line)
+      operation_details.apply(details, line)
     end
 
     def type_code

lib/cfonb/operation_details/unknown.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module CFONB
+  module OperationDetails
+    class Unknown
+      ATTRIBUTES = %i[unknown].freeze
+
+      def self.apply(details, line)
+        return unless line.respond_to?(:detail)
+
+        details.unknown ||= {}
+        code = line.detail_code
+
+        details.unknown[code] =
+          [details.unknown[code], line.detail.strip].compact.join("\n")
+
+        details.instance_variable_set(:"@#{code}", details.unknown[code])        
+      end
+
+      CFONB::OperationDetails.register('Unknown', self)
+    end
+  end
+end

spec/cfonb/operation_spec.rb

@@ -272,6 +272,29 @@
         expect(operation.details.ultimate_creditor).to eq('Patrick')
       end
     end
+
+    context 'with an unknown detail' do
+      let(:detail) do
+        OpenStruct.new(
+          body: '0530004411001871EUR2 0001016255614090823     AAAEUR200000000000740',
+          detail_code: 'AAA',
+          detail: 'EUR200000000000740',
+        )
+      end
+
+      it 'adds the detail to the unknown details hash' do
+        operation.merge_detail(detail)
+
+        expect(operation.details.unknown).to eq({ 'AAA' => 'EUR200000000000740' })
+      end
+
+      it 'updates the current details in case of duplicated codes' do
+        operation.merge_detail(detail)
+        operation.merge_detail(detail)
+
+        expect(operation.details.unknown).to eq({ 'AAA' => "EUR200000000000740\nEUR200000000000740" })
+      end
+    end
   end
 
   describe '#type_code' do

spec/cfonb/parser_spec.rb

@@ -49,6 +49,11 @@
           exchange_rate: nil,
           purpose: 'PURPOSE',
           debtor: 'INTERNET SFR',
+          unknown: {
+            'AAA' => "INTERNETA AAA\nINTERNETA ABB",
+            'BBB' => 'INTERNETE BBB',
+            'CCC' => 'INTERNETI CCC',
+          },
         )
 
         expect(statements[0].operations[1]).to have_attributes(

spec/files/example.txt

@@ -5,6 +5,10 @@
 0515589916200000EUR2 98765432100B1160519     REFREFERENCE                                                               
 0515589916200000EUR2 98765432100B1160519     RCNOTHER REFERENCE                    PURPOSE                              
 0515589916200000EUR2 98765432100B1160519     NPYINTERNET SFR                                                            
+0515589916200000EUR2 98765432100B1160519     AAAINTERNETA AAA                                                           
+0515589916200000EUR2 98765432100B1160519     AAAINTERNETA ABB                                                           
+0515589916200000EUR2 98765432100B1160519     BBBINTERNETE BBB                                                           
+0515589916200000EUR2 98765432100B1160519     CCCINTERNETI CCC                                                           
 
 0415589916200000EUR2 98765432100B1160519  160519VIR  SEPA DEMONSTRATION          0000000000000000000107}REFERENCE       
 0515589916200000EUR2 98765432100B1160519     NPYELEC ERDF