module OVIRT

  class Volume < BaseObject

    attr_reader :size, :disk_type, :bootable, :interface, :format, :sparse, :status, :storage_domain, :vm, :quota 

    def initialize(client, xml)

      super(client, xml[:id], xml[:href], (xml/'name').first.text)

      parse_xml_attributes!(xml)

      self

    end

    def self.to_xml(storage_domain_id,opts={})

       builder = Nokogiri::XML::Builder.new do

        disk_{

          storage_domains_{

            storage_domain_(:id => storage_domain_id)

          }

          size_(opts[:size] || 8589934592)

          type_(opts[:type] || 'data')

          bootable_(opts[:bootable] || 'true')

          interface_(opts[:interface] || 'virtio')

          format_(opts[:format] || 'cow')

          sparse_(opts[:sparse] || 'true')

          if opts[:quota]

            quota_( :id => opts[:quota])

          end

        }

      end

      Nokogiri::XML(builder.to_xml).root.to_s

    end

    def parse_xml_attributes!(xml)

     @storage_domain = (xml/'storage_domains/storage_domain').first[:id] rescue nil

     @size = (xml/'size').first.text

     @disk_type = ((xml/'type').first.text rescue nil)

     @bootable = (xml/'bootable').first.text

     @interface = (xml/'interface').first.text

     @format = (xml/'format').first.text rescue nil

     @sparse = (xml/'sparse').first.text rescue nil

     @status = ((xml/'status').first.text rescue nil)

     @status ||= ((xml/'status/state').first.text rescue nil)

     @vm = Link::new(@client, (xml/'vm').first[:id], (xml/'vm').first[:href]) rescue nil

     @quota = ((xml/'quota').first[:id] rescue nil)

    end

  end

end