feat: include fingerprint and certificate

enterprise/app/models/account_saml_settings.rb

@@ -31,6 +31,18 @@ class AccountSamlSettings < ApplicationRecord
     sp_entity_id.presence || "#{installation_name}-#{account_id}".downcase
   end
 
+  def certificate_fingerprint
+    return nil if certificate.blank?
+
+    begin
+      cert = OpenSSL::X509::Certificate.new(certificate)
+      fingerprint = OpenSSL::Digest::SHA1.new(cert.to_der).to_s
+      fingerprint.upcase.gsub(/(.{2})(?=.)/, '\1:')
+    rescue OpenSSL::X509::CertificateError
+      nil
+    end
+  end
+
   private
 
   def installation_name

enterprise/app/views/api/v1/models/_account_saml_settings.json.jbuilder

@@ -1,6 +1,8 @@
 json.id account_saml_settings.id
 json.account_id account_saml_settings.account_id
 json.sso_url account_saml_settings.sso_url
+json.certificate account_saml_settings.certificate
+json.fingerprint account_saml_settings.certificate_fingerprint
 json.sp_entity_id account_saml_settings.sp_entity_id
 json.role_mappings account_saml_settings.role_mappings || {}
 json.created_at account_saml_settings.created_at