bdex/80773: Toxic Exposure - [Lighthouse API] generatePdf hook up (#1…

…6411)

* dbex/80773: enable benefits_claims/service#submit526 to call LH's /generatePDF endpoint

* bdex/80773: enable benefits_claims/service#submit526 to call LH's /generatePDF endpoint

* bdex/80773: enable benefits_claims/service#submit526 to call LH's /generatePDF endpoint

* linting fix

* bdex/80773: add removal of unicode carriage return and new line characters

* bdex/80773: add generate pdf option unit test

---------

Co-authored-by: Seth Darr <[email protected]>
Co-authored-by: Seth Darr <[email protected]>

lib/lighthouse/benefits_claims/configuration.rb

@@ -13,7 +13,7 @@ module BenefitsClaims
   class Configuration < Common::Client::Configuration::REST
     self.read_timeout = Settings.lighthouse.benefits_claims.timeout || 20
 
-    API_SCOPES = %w[system/claim.read system/claim.write].freeze
+    API_SCOPES = %w[system/claim.read system/claim.write system/526-pdf.override].freeze
     CLAIMS_PATH = 'services/claims/v2/veterans'
     TOKEN_PATH = 'oauth2/claims/system/v1/token'
 

lib/lighthouse/benefits_claims/service.rb

@@ -102,7 +102,8 @@ def create_intent_to_file(type, claimant_ssn, lighthouse_client_id = nil, lighth
       handle_error(e, lighthouse_client_id, endpoint)
     end
 
-    # submit form526 to Lighthouse API endpoint: /services/claims/v2/veterans/{veteranId}/526
+    # submit form526 to Lighthouse API endpoint: /services/claims/v2/veterans/{veteranId}/526 or
+    # /services/claims/v2/veterans/{veteranId}/526/generatePdf
     # @param [hash || Requests::Form526] body: a hash representing the form526
     # attributes in the Lighthouse request schema
     # @param [string] lighthouse_client_id: the lighthouse_client_id requested from Lighthouse
@@ -111,28 +112,31 @@ def create_intent_to_file(type, claimant_ssn, lighthouse_client_id = nil, lighth
     # @option options [hash] :body_only only return the body from the request
     # @option options [string] :aud_claim_url option to override the aud_claim_url for LH Veteran Verification APIs
     # @option options [hash] :auth_params a hash to send in auth params to create the access token
+    # @option options [hash] :generate_pdf call the generatePdf endpoint to receive the 526 pdf
     def submit526(body, lighthouse_client_id = nil, lighthouse_rsa_key_path = nil, options = {})
-      endpoint = 'benefits_claims/form/526'
+      endpoint = '{icn}/526'
       path = "#{@icn}/526"
 
+      if options[:generate_pdf].present?
+        path += '/generatePDF/minimum-validations'
+        endpoint += '/generatePDF/minimum-validations'
+      end
+
       # if we're coming straight from the transformation service without
       # making this a jsonapi request body first ({data: {type:, attributes}}),
       # this will put it in the correct format for transmission
 
-      body = {
-        data: {
-          type: 'form/526',
-          attributes: body
-        }
-      }.as_json.deep_transform_keys { |k| k.camelize(:lower) }
+      body = build_request_body(body)
 
       # Inflection settings force 'current_va_employee' to render as 'currentVAEmployee' in the above camelize() call
       # Since Lighthouse needs 'currentVaEmployee', the following workaround renames it.
       fix_current_va_employee(body)
 
+      json_body = remove_unicode_characters(body)
+
       response = config.post(
         path,
-        body,
+        json_body,
         lighthouse_client_id, lighthouse_rsa_key_path, options
       )
 
@@ -143,6 +147,26 @@ def submit526(body, lighthouse_client_id = nil, lighthouse_rsa_key_path = nil, o
 
     private
 
+    def build_request_body(body)
+      {
+        data: {
+          type: 'form/526',
+          attributes: body
+        }
+      }.as_json.deep_transform_keys { |k| k.camelize(:lower) }
+    end
+
+    # this gsubbing is to fix an issue where the service that generates the 526PDF was failing due to
+    # unicoded carriage returns:
+    # i.e.: \n was throwing: "U+000A ('controlLF') is not available in the font Helvetica, encoding: WinAnsiEncoding"
+    def remove_unicode_characters(body)
+      body.to_json
+          .gsub('\\n', ' ')
+          .gsub('\\r', ' ')
+          .gsub('\\\\n', ' ')
+          .gsub('\\\\r', ' ')
+    end
+
     def fix_current_va_employee(body)
       if body.dig('data', 'attributes', 'veteranIdentification')&.select do |field|
            field['currentVAEmployee']

spec/lib/lighthouse/benefits_claims/service_spec.rb

@@ -113,6 +113,15 @@
             expect(response.claim_id).to eq(1_234_567_890)
           end
         end
+
+        context 'when given the option to use generate pdf' do
+          it 'calls the generate pdf endpoint' do
+            VCR.use_cassette('lighthouse/benefits_claims/submit526/200_response_generate_pdf') do
+              raw_response = @service.submit526({}, '', '', { generate_pdf: true })
+              expect(raw_response.body).to eq('No example available')
+            end
+          end
+        end
       end
     end
   end