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<?php
/**
 * Copyright 2012-2014 Rackspace US, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 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.
 */

namespace OpenCloud\Orchestration\Resource;

use OpenCloud\Common\Http\Message\Formatter;
use OpenCloud\Common\Resource\ReadOnlyResource;

/**
 * Class that represents a resource in a stack.
 * @see http://developer.openstack.org/api-ref-orchestration-v1.html#stack-resources
 *
 * @package OpenCloud\Orchestration\Resource
 */
class Resource extends ReadOnlyResource
{
    protected static $url_resource = 'resources';
    protected static $json_name = 'resource';

    protected $name;
    protected $description;
    protected $status;
    protected $statusReason;
    protected $logicalId;
    protected $physicalId;
    protected $requiredBy;
    protected $updatedTime;
    protected $type;
    protected $links;

    protected $aliases = array(
        'resource_name'          => 'name',
        'resource_status'        => 'status',
        'resource_status_reason' => 'statusReason',
        'logical_resource_id'    => 'logicalId',
        'physical_resource_id'   => 'physicalId',
        'required_by'            => 'requiredBy',
        'updated_time'           => 'updatedTime',
        'resource_type'          => 'type'
    );

    public function primaryKeyField()
    {
        return 'name';
    }

    /**
     * Returns metadata properties associated with this Resource
     *
     * @return \stdClass
     */
    public function getMetadata()
    {
        $url = clone $this->getUrl();
        $url->addPath('metadata');

        $response = $this->getClient()->get($url)->send();
        $json = Formatter::decode($response);

        return $json->metadata;
    }

    /**
     * Returns a list of Events associated with this Resource
     *
     * @param array $params
     * @return \OpenCloud\Common\Collection\PaginatedIterator
     */
    public function listEvents(array $params = array())
    {
        $url = clone $this->getUrl();
        $url->addPath(Event::resourceName())->setQuery($params);

        return $this->getService()->resourceList('Event', $url, $this);
    }

    public function getEvent($id)
    {
        return $this->getService()->resource('Event', $id, $this);
    }
}