Fixed codeclimate issues

app/jobs/send_monthly_invoices_job.rb

@@ -33,8 +33,7 @@ class SendMonthlyInvoicesJob < ApplicationJob # rubocop:disable Metrics/ClassLen
 
     result = EisBilling::GetMonthlyInvoiceNumbers.send_request(invoice_without_numbers.size)
     response = JSON.parse(result.body)
-    billing_restrictions_issue if response['code'] == '403'
-    billing_out_of_range_issue if response['error'] == 'out of range'
+    handle_assign_numbers_response_errors(response)
 
     numbers = response['invoice_numbers']
     invoice_without_numbers.each_with_index do |inv, index|
@@ -61,11 +60,9 @@ class SendMonthlyInvoicesJob < ApplicationJob # rubocop:disable Metrics/ClassLen
 
   private
 
-  def billing_out_of_range_issue
-    raise 'INVOICE NUMBER LIMIT REACHED, COULD NOT GENERATE INVOICE'
-  end
-
-  def billing_restrictions_issue
-    raise 'PROBLEM WITH TOKEN'
+  def handle_assign_numbers_response_errors(response)
+    raise 'INVOICE NUMBER LIMIT REACHED, COULD NOT GENERATE INVOICE' if response['code'] == '403'
+    raise 'PROBLEM WITH TOKEN' if response['error'] == 'out of range'
   end
 end
+

app/models/concerns/invoice/book_keeping.rb

@@ -25,6 +25,19 @@ module Invoice::BookKeeping
     invoice
   end
 
+  def to_e_invoice(payable: true)
+    generator = Invoice::EInvoiceGenerator.new(self, payable)
+    generator.generate
+  end
+
+  def do_not_send_e_invoice?
+    e_invoice_sent? || cancelled?
+  end
+
+  def e_invoice_sent?
+    e_invoice_sent_at.present?
+  end
+
   private
 
   def compose_monthly_directo_lines(lines: [])

app/models/invoice.rb

@@ -131,19 +131,6 @@ class Invoice < ApplicationRecord
     generator.as_pdf
   end
 
-  def to_e_invoice(payable: true)
-    generator = Invoice::EInvoiceGenerator.new(self, payable)
-    generator.generate
-  end
-
-  def do_not_send_e_invoice?
-    e_invoice_sent? || cancelled?
-  end
-
-  def e_invoice_sent?
-    e_invoice_sent_at.present?
-  end
-
   def as_csv_row
     [
       number,