Add balance checking

app/controllers/registrar/bulk_change_controller.rb

@@ -16,8 +16,12 @@ class Registrar
 
       if domain_ids_for_bulk_renew.present?
         domains = Epp::Domain.where(id: domain_ids_for_bulk_renew).to_a
-        task = Domains::BulkRenew::Start.run(domains: domains)
-        flash[:notice] = t(:bulk_renew_completed)
+        task = Domains::BulkRenew::Start.run(domains: domains, period_element: @period)
+        if task.valid?
+          flash[:notice] = t(:bulk_renew_completed)
+        else
+          flash[:notice] = task.errors.full_messages.join(' and ')
+        end
       end
       render file: 'registrar/bulk_change/new', locals: { active_tab: :bulk_renew }
     end

app/interactions/domains/bulk_renew/start.rb

@@ -4,9 +4,18 @@ module Domains
       array :domains do
         object class: Epp::Domain
       end
+      string :period_element
 
       def execute
-
+        period = (period_element.to_i == 0) ? 1 : period_element.to_i
+        unit = period_element[-1] || 'y'
+        task = Domains::CheckBalance::Mass.run(domains: domains,
+                                               operation: 'renew',
+                                               period: period,
+                                               unit: unit)
+        unless task.valid?
+          errors.merge!(task.errors)
+        end
       end
     end
   end

app/interactions/domains/check_balance/mass.rb

@@ -0,0 +1,23 @@
+module Domains
+  module CheckBalance
+    class Mass < ActiveInteraction::Base
+      array :domains do
+        object class: Epp::Domain
+      end
+
+      string :operation
+      integer :period
+      string :unit
+
+      def execute
+        domains.each do |domain|
+          compose(Domains::CheckBalance::SingleDomain,
+                  domain: domain,
+                  operation: 'renew',
+                  period: period,
+                  unit: unit)
+        end
+      end
+    end
+  end
+end

app/interactions/domains/check_balance/single_domain.rb

@@ -0,0 +1,26 @@
+module Domains
+  module CheckBalance
+    class SingleDomain < ActiveInteraction::Base
+      object :domain,
+             class: Epp::Domain
+
+      string :operation
+      integer :period
+      string :unit
+
+      def execute
+        domain_pricelist = domain.pricelist(operation, period.try(:to_i), unit)
+        if domain_pricelist.try(:price) # checking if price list is not found
+          if current_user.registrar.balance < domain_pricelist.price.amount
+            errors.add(:domain, I18n.t('billing_failure_credit_balance_low_for_domain', domain: domain.name))
+            return false
+          end
+        else
+          errors.add(:domain, I18n.t(:active_price_missing_for_operation_with_domain, domain: domain.name))
+          return false
+        end
+        true
+      end
+    end
+  end
+end