<?php
  /**
   * PHP OpenCloud library.
   * 
   * @copyright 2014 Rackspace Hosting, Inc. See LICENSE for information.
   * @license   https://www.apache.org/licenses/LICENSE-2.0
   * @author    Glen Campbell <glen.campbell@rackspace.com>
   * @author    Jamie Hannaford <jamie.hannaford@rackspace.com>
   */
  
  namespace OpenCloud\Common\Service;
  
  use OpenCloud\OpenStack;
  use OpenCloud\Common\Lang;
  use OpenCloud\Compute\Resource\Flavor;
  
  /**
   * NovaService serves as an additional abstraction for particular OpenStack services that exhibit shared functionality.
   */
  abstract class NovaService extends CatalogService
  {
  
  	/**
  	 * Returns a flavor from the service
  	 *
       * @param string|null $id
       * @return Flavor
       */
      public function flavor($id = null)
  	{
  	    return new Flavor($this, $id);
  	}
  
  	/**
  	 * Returns a list of Flavor objects
       *
  	 * @param boolean $details Returns full details or not.
  	 * @param array   $filter  Array for creating queries
  	 * @return Collection
  	 */
  	public function flavorList($details = true, array $filter = array()) 
  	{
          $path = Flavor::resourceName();
          
          if ($details === true) {
              $path .= '/detail';
          }
  
          return $this->collection('OpenCloud\Compute\Resource\Flavor', $this->getUrl($path, $filter));
  	}
  
  	/**
  	 * Loads the available namespaces from the /extensions resource
  	 */
  	protected function loadNamespaces() 
      {
  	    foreach ($this->getExtensions() as $object) {
  	        $this->namespaces[] = $object->alias;
  	    }
  
          if (!empty($this->additionalNamespaces)) {
              $this->namespaces += $this->additionalNamespaces;
          }
  	}
  
  }