Extract concern

#790

app/models/concerns/domain/discardable.rb

@@ -0,0 +1,32 @@
+module Concerns::Domain::Discardable
+  extend ActiveSupport::Concern
+
+  class_methods do
+    def discard_domains
+      domains = where('delete_at < ? AND ? != ALL(statuses) AND ? != ALL(statuses)',
+                      Time.zone.now,
+                      DomainStatus::SERVER_DELETE_PROHIBITED,
+                      DomainStatus::DELETE_CANDIDATE)
+
+      domains.map(&:discard)
+    end
+  end
+
+  def discard
+    statuses << DomainStatus::DELETE_CANDIDATE
+    # We don't validate deliberately since nobody is interested in fixing discarded domain
+    save(validate: false)
+    delete_later
+    logger.info "Domain #{name} (ID: #{id}) is scheduled to be deleted"
+  end
+
+  def keep
+    statuses.delete(DomainStatus::DELETE_CANDIDATE)
+    save
+    do_not_delete_later
+  end
+
+  def discarded?
+    statuses.include?(DomainStatus::DELETE_CANDIDATE)
+  end
+end