module Fog
  module Terremark
    module Shared
      module Real

        # Instatiate a vapp template
        #
        # ==== Parameters
        # * vdc_id<~Integer> - Id of vdc to instantiate template in
        # * options<~Hash>:
        #   * cpus<~Integer>: Number of cpus in [1, 2, 4, 8], defaults to 1
        #   * memory<~Integer>: Amount of memory either 512 or a multiple of 1024, defaults to 512
        # ==== Returns
        # * response<~Excon::Response>:
        #   * body<~Hash>:

        # FIXME

        #     * 'CatalogItems'<~Array>
        #       * 'href'<~String> - linke to item
        #       * 'name'<~String> - name of item
        #       * 'type'<~String> - type of item
        #     * 'description'<~String> - Description of catalog
        #     * 'name'<~String> - Name of catalog
        def instantiate_vapp_template(name, options = {})
          options['cpus'] ||= 1
          options['memory'] ||= 512

          # FIXME: much cheating to commence
          vdc_id        = default_vdc_id
          network_id    = default_network_id
          catalog_item  = 12 # Ubuntu JeOS 9.10 (64-bit)

          #       case UNRESOLVED:
          #          return "0";
          #       case RESOLVED:
          #          return "1";
          #       case OFF:
          #          return "2";
          #       case SUSPENDED:
          #          return "3";
          #       case ON:
          #          return "4";
          #       default:
          # 
          # /**
          #  * The vApp is unresolved (one or more file references are unavailable in the cloud)
          #  */
          # UNRESOLVED,
          # /**
          #  * The vApp is resolved (all file references are available in the cloud) but not deployed
          #  */
          # RESOLVED,
          # /**
          #  * The vApp is deployed and powered off
          #  */
          # OFF,
          # /**
          #  * The vApp is deployed and suspended
          #  */
          # SUSPENDED,
          # /**
          #  * The vApp is deployed and powered on
          #  */
          # ON;

          data = <<-DATA
  <?xml version="1.0" encoding="UTF-8"?>
    <InstantiateVAppTemplateParams name="#{name}" xmlns="http://www.vmware.com/vcloud/v0.8" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.vmware.com/vcloud/v0.8 http://services.vcloudexpress.terremark.com/api/v0.8/ns/vcloud.xsd">
      <VAppTemplate href="https://services.vcloudexpress.terremark.com/api/v0.8/catalogItem/#{catalog_item}" />
      <InstantiationParams xmlns:vmw="http://www.vmware.com/schema/ovf">
        <ProductSection xmlns:ovf="http://schemas.dmtf.org/ovf/envelope/1" xmlns:q1="http://www.vmware.com/vcloud/v0.8"/>
        <VirtualHardwareSection xmlns:q1="http://www.vmware.com/vcloud/v0.8">
          <Item xmlns="http://schemas.dmtf.org/ovf/envelope/1">
            <InstanceID xmlns="http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_ResourceAllocationSettingData">1</InstanceID>
            <ResourceType xmlns="http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_ResourceAllocationSettingData">3</ResourceType>
            <VirtualQuantity xmlns="http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_ResourceAllocationSettingData">#{options['cpus']}</VirtualQuantity>
          </Item>
          <Item xmlns="http://schemas.dmtf.org/ovf/envelope/1">
            <InstanceID xmlns="http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_ResourceAllocationSettingData">2</InstanceID>
            <ResourceType xmlns="http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_ResourceAllocationSettingData">4</ResourceType>
            <VirtualQuantity xmlns="http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_ResourceAllocationSettingData">#{options['memory']}</VirtualQuantity>
          </Item>
        </VirtualHardwareSection>
        <NetworkConfigSection>
          <NetworkConfig name="Network 1">
            <Features>
              <vmw:FenceMode>allowInOut</vmw:FenceMode>
              <vmw:Dhcp>true</vmw:Dhcp>
            </Features>
            <NetworkAssociation href="https://services.vcloudexpress.terremark.com/api/v8/network/#{network_id}" />
          </NetworkConfig>
        </NetworkConfigSection>
      </InstantiationParams>
    </InstantiateVAppTemplateParams>
  DATA

          request(
            :body     => data,
            :expects  => 200,
            :headers  => { 'Content-Type' => 'application/vnd.vmware.vcloud.instantiateVAppTemplateParams+xml' },
            :method   => 'POST',
            :parser   => Fog::Parsers::Terremark::Shared::InstantiateVappTemplate.new,
            :path     => "vdc/#{vdc_id}/action/instantiatevAppTemplate"
          )
        end

      end

      module Mock

        def instatiate_vapp_template(vapp_template_id)
          raise MockNotImplemented.new("Contributions welcome!")
        end

      end
    end
  end
end