added directo handler for interaction with billing system

app/controllers/eis_billing/directo_response_controller.rb

@@ -0,0 +1,35 @@
+class EisBilling::DirectoResponseController < EisBilling::BaseController
+  def update
+    response = params[:response]
+    xml_data = params[:xml_data]
+    @month = params.fetch(:month, false)
+
+    process_directo_response(xml_data, response)
+    render status: 200, json: { messege: 'Should return new directo number', status: :ok }
+  end
+
+  private
+
+  def process_directo_response(xml, req)
+    Rails.logger.info "[Directo] - Responded with body: #{xml}"
+    Nokogiri::XML(xml).css('Result').each do |res|
+      if @month
+        mark_invoice_as_sent(res: res, req: req)
+      else
+        inv = Invoice.find_by(number: res.attributes['docid'].value.to_i)
+        mark_invoice_as_sent(invoice: inv, res: res, req: req)
+      end
+    end
+  end
+
+  def mark_invoice_as_sent(invoice: nil, res:, req:)
+    directo_record = Directo.new(response: res.as_json.to_h,
+                                 request: req, invoice_number: res.attributes['docid'].value.to_i)
+    if invoice
+      directo_record.item = invoice
+      invoice.update(in_directo: true)
+    end
+
+    directo_record.save!
+  end
+end