WIP

app/models/bill_signature.rb

@@ -17,7 +17,7 @@ class BillSignature < ApplicationRecord
   end
 
   def serialize_operations(day)
-    self.serialized.attach(
+    serialized.attach(
       io: StringIO.new(operations_bill_json),
       filename: "demarches-simplifiees-operations-#{day.to_date.iso8601}.json",
       content_type: 'application/json',
@@ -40,7 +40,7 @@ class BillSignature < ApplicationRecord
   end
 
   def set_signature(signature, day)
-    self.signature.attach(
+    signature.attach(
       io: StringIO.new(signature),
       filename: "demarches-simplifiees-signature-#{day.to_date.iso8601}.der",
       content_type: 'application/x-x509-ca-cert'
@@ -49,36 +49,54 @@ class BillSignature < ApplicationRecord
 
   # Validations
   def check_bill_digest
-    if self.digest != self.operations_bill_digest
+    if digest != operations_bill_digest
       errors.add(:digest)
     end
   end
 
   def check_serialized_bill_contents
-    if !self.serialized.attached?
+    if !serialized.attached?
       errors.add(:serialized, :blank)
       return
     end
 
-    if JSON.parse(self.serialized.download) != self.operations_bill
+    if JSON.parse(read_serialized) != operations_bill
       errors.add(:serialized)
     end
   end
 
   def check_signature_contents
-    if !self.signature.attached?
+    if !signature.attached?
       errors.add(:signature, :blank)
       return
     end
 
-    timestamp_signature_date = ASN1::Timestamp.signature_time(self.signature.download)
+    timestamp_signature_date = ASN1::Timestamp.signature_time(read_signature)
     if timestamp_signature_date > Time.zone.now
       errors.add(:signature, :invalid_date)
     end
 
-    timestamp_signed_digest = ASN1::Timestamp.signed_digest(self.signature.download)
-    if timestamp_signed_digest != self.digest
+    timestamp_signed_digest = ASN1::Timestamp.signed_digest(read_signature)
+    if timestamp_signed_digest != digest
       errors.add(:signature)
     end
   end
+
+  def read_signature
+    if attachment_changes['signature']
+      io = attachment_changes['signature'].attachable[:io]
+      io.read if io.present?
+    elsif signature.attached?
+      signature.download
+    end
+  end
+
+  def read_serialized
+    if attachment_changes['serialized']
+      io = attachment_changes['serialized'].attachable[:io]
+      io.read if io.present?
+    elsif serialized.attached?
+      serialized.download
+    end
+  end
 end

spec/factories/bill_signature.rb

@@ -1,6 +1,10 @@
 FactoryBot.define do
   factory :bill_signature do
+    trait :with_serialized do
       serialized { Rack::Test::UploadedFile.new('spec/fixtures/files/bill_signature/serialized.json', 'application/json') }
+    end
+    trait :with_signature do
       signature { Rack::Test::UploadedFile.new('spec/fixtures/files/bill_signature/signature.der', 'application/x-x509-ca-cert') }
     end
+  end
 end

spec/models/bill_signature_spec.rb

@@ -1,6 +1,6 @@
 RSpec.describe BillSignature, type: :model do
   describe 'validations' do
-    subject(:bill_signature) { BillSignature.new }
+    subject(:bill_signature) { build(:bill_signature) }
 
     describe 'check_bill_digest' do
       before do
@@ -119,14 +119,20 @@ RSpec.describe BillSignature, type: :model do
   end
 
   describe '.build_with_operations' do
-    subject(:bill_signature) { described_class.build_with_operations(dossier_operation_logs, Date.new(1871, 03, 18)) }
+    let(:day) { Date.new(1871, 03, 18) }
+    subject(:bill_signature) { build(:bill_signature, :with_signature) }
+
+    before do
+      bill_signature.dossier_operation_logs = dossier_operation_logs
+      bill_signature.serialize_operations(day)
+    end
 
     context 'when there are no operations' do
       let(:dossier_operation_logs) { [] }
 
       it { expect(bill_signature.operations_bill).to eq({}) }
       it { expect(bill_signature.digest).to eq(Digest::SHA256.hexdigest('{}')) }
-      it { expect(bill_signature.serialized.download).to eq('{}') }
+      it { expect(bill_signature.read_serialized).to eq('{}') }
       it { expect(bill_signature.serialized.filename).to eq('demarches-simplifiees-operations-1871-03-18.json') }
     end
 
@@ -137,7 +143,7 @@ RSpec.describe BillSignature, type: :model do
 
       it { expect(bill_signature.operations_bill).to eq({ '1234' => 'abcd' }) }
       it { expect(bill_signature.digest).to eq(Digest::SHA256.hexdigest('{"1234":"abcd"}')) }
-      it { expect(bill_signature.serialized.download).to eq('{"1234":"abcd"}') }
+      it { expect(bill_signature.read_serialized).to eq('{"1234":"abcd"}') }
       it { expect(bill_signature.serialized.filename).to eq('demarches-simplifiees-operations-1871-03-18.json') }
     end
 
@@ -151,7 +157,7 @@ RSpec.describe BillSignature, type: :model do
 
       it { expect(bill_signature.operations_bill).to eq({ '1234' => 'abcd', '5678' => 'dcba' }) }
       it { expect(bill_signature.digest).to eq(Digest::SHA256.hexdigest('{"1234":"abcd","5678":"dcba"}')) }
-      it { expect(bill_signature.serialized.download).to eq('{"1234":"abcd","5678":"dcba"}') }
+      it { expect(bill_signature.read_serialized).to eq('{"1234":"abcd","5678":"dcba"}') }
       it { expect(bill_signature.serialized.filename).to eq('demarches-simplifiees-operations-1871-03-18.json') }
     end
   end

spec/services/bill_signature_service_spec.rb

@@ -25,7 +25,7 @@ describe BillSignatureService do
 
     context "when there are no operations to be signed" do
       before do
-        create :dossier_operation_log, created_at: 1.day.ago, bill_signature: build(:bill_signature)
+        create :dossier_operation_log, created_at: 1.day.ago, bill_signature: build(:bill_signature, :with_signature, :with_serialized)
         create :dossier_operation_log, created_at: 1.day.from_now
       end