#
# system.rb
#
# Copyright (C) 2008, 2009, Red Hat, Inc.
# Written by Darryl L. Pierce <dpierce@redhat.com>
#
# This file is part of rubygem-cobbler.
#
# rubygem-cobbleris free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 2.1 of the License, or
# (at your option) any later version.
#
# rubygem-cobbler is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with rubygem-cobbler.  If not, see <http://www.gnu.org/licenses/>.
#

module Cobbler

  # +System+ represents a system within Cobbler.
  #
  class System < Base

    cobbler_lifecycle :find_all => 'get_systems',
      :find_one => 'get_system',
      :remove => 'remove_system'

    cobbler_field      :name
    cobbler_field      :parent
    cobbler_field      :profile
    cobbler_field      :image
    cobbler_field      :depth
    cobbler_collection :kernel_options, :packing => :hash
    cobbler_field      :kickstart
    cobbler_collection :ks_meta, :packing => :hash
    cobbler_field      :netboot_enabled
    cobbler_collection :owners
    cobbler_field      :server
    cobbler_collection :interfaces, :type => 'NetworkInterface', :packing => :hash
    cobbler_field      :virt_cpus
    cobbler_field      :virt_file_size
    cobbler_field      :virt_path
    cobbler_field      :virt_ram
    cobbler_field      :virt_type
    cobbler_field      :virt_bridge

    def initialize(definitions = nil)
      super(definitions)
    end

    # Saves this instance.
    #
    def save
      Base.begin_transaction(true)

      token = Base.login

      raise Exception.new('Update failed prior to saving') unless Base.make_call('update')

      sysid = Base.make_call('new_system',token)

      Base.make_call('modify_system',sysid,'name',   name,   token)
      Base.make_call('modify_system',sysid,'profile',profile,token) if profile
      Base.make_call('modify_system',sysid,'image',  image,  token) if image

      if @interfaces
        count = 0
        @interfaces.each do |interface|

          values = interface.bundle_for_saving(count)

          unless values.empty?
            Base.make_call('modify_system',sysid,'modify-interface',values,token)
            count = count + 1
          end

        end
      end

      Base.make_call('save_system',sysid,token)

      Base.end_transaction
    end

    private

    # Creates a new instance of +System+ from a result received from Cobbler.
    #
    def self.create(attrs)
      System.new(attrs)
    end
  end
end