Basic contact check command implementation

app/helpers/epp/contacts_helper.rb

@@ -40,4 +40,17 @@ module Epp::ContactsHelper
       render '/epp/error'
     end
   end
+
+  def check_contact
+    ph = params_hash['epp']['command']['check']['check']
+    @contacts = Contact.check_availability( ph[:id] )
+
+    if @contacts.any?
+      render '/epp/contacts/check'
+    else
+      @code = '2303'
+      @msg = "Object does not exist"
+      render 'epp/error'
+    end
+  end
 end

app/models/contact.rb

@@ -14,4 +14,22 @@ class Contact < ActiveRecord::Base
     code = Isikukood.new(ident)
     errors.add(:ident, 'bad format') unless code.valid?
   end
+
+  class << self
+    def check_availability(codes)
+      codes = [codes] if codes.is_a?(String)
+
+      res = []
+      codes.each do |x|
+        if Contact.find_by(code: x)
+          res << {code: x, avail: 0, reason: 'in use'} 
+        else
+          res << {code: x, avail: 1}
+        end
+      end
+
+      res
+    end
+  end
+
 end

app/views/epp/contacts/check.xml.builder

@@ -0,0 +1,22 @@
+xml.epp_head do
+  xml.response do
+    xml.result('code' => '1000') do
+      xml.msg 'Command completed successfully'
+    end
+
+    xml.resData do
+      xml.tag!('contact:chkData', 'xmlns:contact' => 'http://www.nic.cz/xml/epp/contact-1.6', 
+               'xsi:schemaLocation' => 'http://www.nic.cz/xml/epp/contact-1.6 contact-1.6.xsd') do
+         #xml.tag!('contact:id', @contact.code)
+        @contacts.each do |contact|
+          xml.tag!('contact:cd') do
+            xml.tag! "contact:id", contact[:code], avail: contact[:avail]
+            xml.tag!('contact:reason', contact[:reason]) unless contact[:avail] == 1
+          end
+        end
+      end
+    end
+
+    xml << render('/epp/shared/trID')
+  end
+end