photos.php

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<?php

/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to [e-mail] so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Gdata
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */

/**
 * @see Zend_Gdata
 */
require_once 'Zend/Gdata.php';

/**
 * @see Zend_Gdata_Photos_UserFeed
 */
require_once 'Zend/Gdata/Photos/UserFeed.php';

/**
 * @see Zend_Gdata_Photos_AlbumFeed
 */
require_once 'Zend/Gdata/Photos/AlbumFeed.php';

/**
 * @see Zend_Gdata_Photos_PhotoFeed
 */
require_once 'Zend/Gdata/Photos/PhotoFeed.php';

/**
 * Service class for interacting with the Google Photos Data API.
 * 
 * Like other service classes in this module, this class provides access via 
 * an HTTP client to Google servers for working with entries and feeds.
 * 
 * @link http://code.google.com/apis/picasaweb/gdata.html
 *
 * @category   Zend
 * @package    Zend_Gdata
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Gdata_Photos extends Zend_Gdata
{
    
    const PICASA_BASE_URI = 'http://picasaweb.google.com/data';
    const PICASA_BASE_FEED_URI = 'http://picasaweb.google.com/data/feed';
    const AUTH_SERVICE_NAME = 'lh2';
    
    /**
     * Default projection when interacting with the Picasa server.
     */
    const DEFAULT_PROJECTION = 'api';
    
    /**
     * The default visibility to filter events by.
     */
    const DEFAULT_VISIBILITY = 'all';
    
    /**
     * The default user to retrieve feeds for.
     */
    const DEFAULT_USER = 'default';
    
    /**
     * Path to the user feed on the Picasa server.
     */
    const USER_PATH = 'user';
    
    /**
     * Path to album feeds on the Picasa server.
     */
    const ALBUM_PATH = 'albumid';
    
    /**
     * Path to photo feeds on the Picasa server.
     */
    const PHOTO_PATH = 'photoid';
    
    /**
     * The path to the community search feed on the Picasa server.
     */
    const COMMUNITY_SEARCH_PATH = 'all';
    
    /**
     * The path to use for finding links to feeds within entries
     */
    const FEED_LINK_PATH = 'http://schemas.google.com/g/2005#feed';
    
    /**
     * The path to use for the determining type of an entry
     */
    const KIND_PATH = 'http://schemas.google.com/g/2005#kind';
    
    public static $namespaces = array(
            'gphoto' => 'http://schemas.google.com/photos/2007',
            'photo' => 'http://www.pheed.com/pheed/',
            'exif' => 'http://schemas.google.com/photos/exif/2007',
            'georss' => 'http://www.georss.org/georss',
            'gml' => 'http://www.opengis.net/gml',
            'media' => 'http://search.yahoo.com/mrss/');

    /**
     * Create Zend_Gdata_Photos object
     * 
     * @param Zend_Http_Client $client (optional) The HTTP client to use when 
     *          when communicating with the servers.
     * @param string $applicationId The identity of the app in the form of Company-AppName-Version
     */
    public function __construct($client = null, $applicationId = 'MyCompany-MyApp-1.0')
    {
        $this->registerPackage('Zend_Gdata_Photos');
        $this->registerPackage('Zend_Gdata_Photos_Extension');
        parent::__construct($client, $applicationId);
        $this->_httpClient->setParameterPost('service', self::AUTH_SERVICE_NAME);
    }

    /**
     * Retrieve a UserFeed containing AlbumEntries, PhotoEntries and 
     * TagEntries associated with a given user.
     *
     * @param string $userName The userName of interest
     * @param mixed $location (optional) The location for the feed, as a URL 
     *          or Query. If not provided, a default URL will be used instead.
     * @return Zend_Gdata_Photos_UserFeed
     * @throws Zend_Gdata_App_Exception
     * @throws Zend_Gdata_App_HttpException
     */
    public function getUserFeed($userName = null, $location = null)
    {
        if ($userName !== null) {
            $uri = self::PICASA_BASE_FEED_URI . '/' .
                self::DEFAULT_PROJECTION . '/' . self::USER_PATH . '/' .
                $userName;
        } else if ($location === null) {
            $uri = self::PICASA_BASE_FEED_URI . '/' .
                self::DEFAULT_PROJECTION . '/' . self::USER_PATH . '/' .
                self::DEFAULT_USER;
        } else if ($location instanceof Zend_Gdata_Photos_UserQuery) {
            $location->setType('feed');
            $uri = $location->getQueryUrl();
        } else if ($location instanceof Zend_Gdata_Query) {
            $uri = $location->getQueryUrl();
        } else {
            $uri = $location;
        }
        
        return parent::getFeed($uri, 'Zend_Gdata_Photos_UserFeed');
    }

    /**
     * Retreive AlbumFeed object containing multiple PhotoEntry or TagEntry
     * objects.
     *
     * @param mixed $location (optional) The location for the feed, as a URL or Query.
     * @return Zend_Gdata_Photos_AlbumFeed
     * @throws Zend_Gdata_App_Exception
     * @throws Zend_Gdata_App_HttpException
     */
    public function getAlbumFeed($location = null)
    {
        if ($location === null) {
            require_once 'Zend/Gdata/App/InvalidArgumentException.php';
            throw new Zend_Gdata_App_InvalidArgumentException(
                    'Location must not be null');
        } else if ($location instanceof Zend_Gdata_Photos_UserQuery) {
            $location->setType('feed');
            $uri = $location->getQueryUrl();
        } else if ($location instanceof Zend_Gdata_Query) {
            $uri = $location->getQueryUrl();
        } else {
            $uri = $location;
        }
        return parent::getFeed($uri, 'Zend_Gdata_Photos_AlbumFeed');
    }

    /**
     * Retreive PhotoFeed object containing comments and tags associated 
     * with a given photo.
     *
     * @param mixed $location (optional) The location for the feed, as a URL
     *          or Query. If not specified, the community search feed will
     *          be returned instead.
     * @return Zend_Gdata_Photos_PhotoFeed
     * @throws Zend_Gdata_App_Exception
     * @throws Zend_Gdata_App_HttpException
     */
    public function getPhotoFeed($location = null)
    {
        if ($location === null) {
            $uri = self::PICASA_BASE_FEED_URI . '/' .
                self::DEFAULT_PROJECTION . '/' .
                self::COMMUNITY_SEARCH_PATH;
        } else if ($location instanceof Zend_Gdata_Photos_UserQuery) {
            $location->setType('feed');
            $uri = $location->getQueryUrl();
        } else if ($location instanceof Zend_Gdata_Query) {
            $uri = $location->getQueryUrl();
        } else {
            $uri = $location;
        }
        return parent::getFeed($uri, 'Zend_Gdata_Photos_PhotoFeed');
    }

    /**
     * Retreive a single UserEntry object.
     *
     * @param mixed $location The location for the feed, as a URL or Query.
     * @return Zend_Gdata_Photos_UserEntry
     * @throws Zend_Gdata_App_Exception
     * @throws Zend_Gdata_App_HttpException
     */
    public function getUserEntry($location)
    {
        if ($location === null) {
            require_once 'Zend/Gdata/App/InvalidArgumentException.php';
            throw new Zend_Gdata_App_InvalidArgumentException(
                    'Location must not be null');
        } else if ($location instanceof Zend_Gdata_Photos_UserQuery) {
            $location->setType('entry');
            $uri = $location->getQueryUrl();
        } else if ($location instanceof Zend_Gdata_Query) {
            $uri = $location->getQueryUrl();
        } else {
            $uri = $location;
        }
        return parent::getEntry($uri, 'Zend_Gdata_Photos_UserEntry');
    }

    /**
     * Retreive a single AlbumEntry object.
     *
     * @param mixed $location The location for the feed, as a URL or Query.
     * @return Zend_Gdata_Photos_AlbumEntry
     * @throws Zend_Gdata_App_Exception
     * @throws Zend_Gdata_App_HttpException
     */
    public function getAlbumEntry($location)
    {
        if ($location === null) {
            require_once 'Zend/Gdata/App/InvalidArgumentException.php';
            throw new Zend_Gdata_App_InvalidArgumentException(
                    'Location must not be null');
        } else if ($location instanceof Zend_Gdata_Photos_UserQuery) {
            $location->setType('entry');
            $uri = $location->getQueryUrl();
        } else if ($location instanceof Zend_Gdata_Query) {
            $uri = $location->getQueryUrl();
        } else {
            $uri = $location;
        }
        return parent::getEntry($uri, 'Zend_Gdata_Photos_AlbumEntry');
    }

    /**
     * Retreive a single PhotoEntry object.
     *
     * @param mixed $location The location for the feed, as a URL or Query.
     * @return Zend_Gdata_Photos_PhotoEntry
     * @throws Zend_Gdata_App_Exception
     * @throws Zend_Gdata_App_HttpException
     */
    public function getPhotoEntry($location)
    {
        if ($location === null) {
            require_once 'Zend/Gdata/App/InvalidArgumentException.php';
            throw new Zend_Gdata_App_InvalidArgumentException(
                    'Location must not be null');
        } else if ($location instanceof Zend_Gdata_Photos_UserQuery) {