require 'fog/core/model'
require 'fog/serverlove/util/compute/password_generator'

module Fog
  module Compute
    class Serverlove

      class Server < Fog::Model

        identity :id, :aliases => 'server'

        attribute :name
        attribute :cpu
        attribute :mem
        attribute :smp
        attribute :ide_0_0, :aliases => 'ide:0:0'
        attribute :ide_0_1, :aliases => 'ide:0:1'
        attribute :ide_1_0, :aliases => 'ide:1:0'
        attribute :ide_1_1, :aliases => 'ide:1:1'
        attribute :boot
        attribute :persistent
        attribute :vnc
        attribute :vnc_password, :aliases => 'vnc:password'
        attribute :status
        attribute :user
        attribute :started
        attribute :nic_0_model, :aliases => 'nic:0:model'
        attribute :nic_0_dhcp,  :aliases => 'nic:0:dhcp'

        def save
          attributes = {}

          if(identity)
            attributes = service.update_server(identity, allowed_attributes).body
          else
            requires :name
            requires :cpu
            attributes = service.create_server(self.class.defaults.merge(allowed_attributes)).body
          end

          merge_attributes(attributes)
          self
        end

        def destroy
          requires :identity
          service.destroy_server(identity)
          self
        end

        def allowed_attributes
          allowed = [
                      :name, :cpu, :smp, :mem, :persistent,
                      :vnc_password, :vnc,
                      :ide_0_0, :ide_0_1, :ide_1_0, :ide_1_1,
                      :boot, :nic_0_model, :nic_0_dhcp
                    ]
          attributes.select {|k,v| allowed.include? k}
        end

        def self.defaults
          # TODO: Document default settings.
          # Note that VNC password standards are strict (need explaining)
          { 'nic:0:model' => 'e1000', 'nic:0:dhcp' => 'auto',
            'smp' => 'auto', 'vnc' => 'auto',
            'vnc:password' => Fog::Compute::Serverlove::PasswordGenerator.generate
          }
        end
      end
    end
  end
end