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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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#
#       http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
# License for the specific language governing permissions and limitations
# under the License.

class CIMI::Model::CloudEntryPoint < CIMI::Model::Base

  # All possible CIMI collections, in the order in which they should appear
  # in the CEP
  COLLECTIONS = [ "resourceMetadata", "systems", "systemTemplates",
            "machines" , "machineTemplates", "machineConfigs",
            "machineImages", "credentials", "credentialTemplates",
            "volumes", "volumeTemplates", "volumeConfigs", "volumeImages",
            "networks", "networkTemplates", "networkConfigs", "networkPorts",
            "networkPortTemplates", "networkPortConfigs",
            "addresses", "addressTemplates", "forwardingGroups",
            "forwardingGroupTemplates",
            "jobs", "meters", "meterTemplates", "meterConfigs",
            "eventLogs", "eventLogTemplates" ]

  text  :base_uri, :xml_name => "baseURI", :json_name => "baseURI"

  COLLECTIONS.each do |coll|
    href coll.underscore
  end

  def self.create(context)
    self.new(entities(context).merge({
      :name => context.driver.name,
      :description => "Cloud Entry Point for the Deltacloud #{context.driver.name} driver",
      :id => context.cloudEntryPoint_url,
      :base_uri => context.base_uri,
      :created => Time.now.xmlschema
    }))
  end

  # Return an Hash of the CIMI root entities used in CloudEntryPoint
  def self.entities(context)
    CIMI::Collections.cimi_modules.inject({}) do |supported_entities, m|
      m.collections.each do |c|
        index_operation_capability = c.operation(:index).required_capability
        next if m.settings.respond_to?(:capability) and !m.settings.capability(index_operation_capability)
        supported_entities[c.collection_name.to_s] = { :href => context.send(:"#{c.collection_name}_url") }
      end
      supported_entities
    end
  end

  def entities
    @attribute_values.clone.delete_if { |key, value| !value.respond_to? :href }
  end

  private

  def self.href_defined?(resource)
    true if schema.attribute_names.include? resource.underscore
  end

end