Refactor domain block checks (#11268)

app/helpers/domain_control_helper.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+module DomainControlHelper
+  def domain_not_allowed?(uri_or_domain)
+    return if uri_or_domain.blank?
+
+    domain = begin
+      if uri_or_domain.include?('://')
+        Addressable::URI.parse(uri_or_domain).domain
+      else
+        uri_or_domain
+      end
+    end
+
+    DomainBlock.blocked?(domain)
+  end
+end