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<?php
/**
 * @package     Joomla.Platform
 * @subpackage  Google
 *
 * @copyright   Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

use Joomla\Registry\Registry;

/**
 * Google API data class for the Joomla Platform.
 *
 * @since       3.1.4
 * @deprecated  4.0  Use the `joomla/google` package via Composer instead
 */
abstract class JGoogleData
{
	/**
	 * @var    Registry  Options for the Google data object.
	 * @since  3.1.4
	 */
	protected $options;

/**
	 * @var    JGoogleAuth  Authentication client for the Google data object.
	 * @since  3.1.4
	 */
	protected $auth;

/**
	 * Constructor.
	 *
	 * @param   Registry     $options  Google options object.
	 * @param   JGoogleAuth  $auth     Google data http client object.
	 *
	 * @since   3.1.4
	 */
	public function __construct(Registry $options = null, JGoogleAuth $auth = null)
	{
		$this->options = isset($options) ? $options : new Registry;
		$this->auth = isset($auth) ? $auth : new JGoogleAuthOauth2($this->options);
	}

/**
	 * Method to authenticate to Google
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   3.1.4
	 */
	public function authenticate()
	{
		return $this->auth->authenticate();
	}

/**
	 * Check authentication
	 *
	 * @return  boolean  True if authenticated.
	 *
	 * @since   3.1.4
	 */
	public function isAuthenticated()
	{
		return $this->auth->isAuthenticated();
	}

/**
	 * Method to validate XML
	 *
	 * @param   string  $data  XML data to be parsed
	 *
	 * @return  SimpleXMLElement  XMLElement of parsed data
	 *
	 * @since   3.1.4
	 * @throws UnexpectedValueException
	 */
	protected static function safeXml($data)
	{
		try
		{
			return new SimpleXMLElement($data, LIBXML_NOWARNING | LIBXML_NOERROR);
		}
		catch (Exception $e)
		{
			throw new UnexpectedValueException("Unexpected data received from Google: `$data`.", $e->getCode(), $e);
		}
	}

/**
	 * Method to retrieve a list of data
	 *
	 * @param   array   $url       URL to GET
	 * @param   int     $maxpages  Maximum number of pages to return
	 * @param   string  $token     Next page token
	 *
	 * @return  mixed  Data from Google
	 *
	 * @since   3.1.4
	 * @throws UnexpectedValueException
	 */
	protected function listGetData($url, $maxpages = 1, $token = null)
	{
		$qurl = $url;

if (strpos($url, '&') && isset($token))
		{
			$qurl .= '&pageToken=' . $token;
		}
		elseif (isset($token))
		{
			$qurl .= 'pageToken=' . $token;
		}

$jdata = $this->query($qurl);
		$data = json_decode($jdata->body, true);

if ($data && array_key_exists('items', $data))
		{
			if ($maxpages != 1 && array_key_exists('nextPageToken', $data))
			{
				$data['items'] = array_merge($data['items'], $this->listGetData($url, $maxpages - 1, $data['nextPageToken']));
			}

return $data['items'];
		}
		elseif ($data)
		{
			return array();
		}
		else
		{
			throw new UnexpectedValueException("Unexpected data received from Google: `{$jdata->body}`.");
		}
	}

/**
	 * Method to retrieve data from Google
	 *
	 * @param   string  $url      The URL for the request.
	 * @param   mixed   $data     The data to include in the request.
	 * @param   array   $headers  The headers to send with the request.
	 * @param   string  $method   The type of http request to send.
	 *
	 * @return  mixed  Data from Google.
	 *
	 * @since   3.1.4
	 */
	protected function query($url, $data = null, $headers = null, $method = 'get')
	{
		return $this->auth->query($url, $data, $headers, $method);
	}

/**
	 * Get an option from the JGoogleData instance.
	 *
	 * @param   string  $key  The name of the option to get.
	 *
	 * @return  mixed  The option value.
	 *
	 * @since   3.1.4
	 */
	public function getOption($key)
	{
		return $this->options->get($key);
	}

/**
	 * Set an option for the JGoogleData instance.
	 *
	 * @param   string  $key    The name of the option to set.
	 * @param   mixed   $value  The option value to set.
	 *
	 * @return  JGoogleData  This object for method chaining.
	 *
	 * @since   3.1.4
	 */
	public function setOption($key, $value)
	{
		$this->options->set($key, $value);

return $this;
	}
}