<?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 license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Mobile

 * @subpackage Zend_Mobile_Push

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id$

 */

/** Zend_Http_Client **/

require_once 'Zend/Http/Client.php';

/** Zend_Mobile_Push_Abstract **/

require_once 'Zend/Mobile/Push/Abstract.php';

/** Zend_Mobile_Push_Message_Gcm **/

require_once 'Zend/Mobile/Push/Message/Gcm.php';

/** Zend_Mobile_Push_Response_Gcm **/

require_once 'Zend/Mobile/Push/Response/Gcm.php';

/**

 * GCM Push

 *

 * @category   Zend

 * @package    Zend_Mobile

 * @subpackage Zend_Mobile_Push

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id$

 */

class Zend_Mobile_Push_Gcm extends Zend_Mobile_Push_Abstract

{

    /**

     * @const string Server URI

     */

    const SERVER_URI = 'https://android.googleapis.com/gcm/send';

    /**

     * Http Client

     *

     */

    protected $_httpClient;

    /**

     * API Key

     *

     * @var string

     */

    protected $_apiKey;

    /**

     * Get API Key

     *

     * @return string

     */

    public function getApiKey()

    {

        return $this->_apiKey;

    }

    /**

     * Set API Key

     *

     * @param  string $key

     * @return Zend_Mobile_Push_Gcm

     * @throws Zend_Mobile_Push_Exception

     */

    public function setApiKey($key)

    {

        if (!is_string($key) || empty($key)) {

            throw new Zend_Mobile_Push_Exception('The api key must be a string and not empty');

        }

        $this->_apiKey = $key;

        return $this;

    }

    /**

     * Get Http Client

     *

     * @return Zend_Http_Client

     */

    public function getHttpClient()

    {

        if (!$this->_httpClient) {

            $this->_httpClient = new Zend_Http_Client();

            $this->_httpClient->setConfig(array(

                'strictredirects' => true,

            ));

        }

        return $this->_httpClient;

    }

    /**

     * Set Http Client

     *

     * @return Zend_Mobile_Push_Gcm

     */

    public function setHttpClient(Zend_Http_Client $client)

    {

        $this->_httpClient = $client;

        return $this;

    }

    /**

     * Send Message

     *

     * @return Zend_Mobile_Push_Response_Gcm

     */

    public function send(Zend_Mobile_Push_Message_Abstract $message)

    {

        if (!$message->validate()) {

            throw new Zend_Mobile_Push_Exception('The message is not valid.');

        }

        $this->connect();

        $client = $this->getHttpClient();

        $client->setUri(self::SERVER_URI);

        $client->setHeaders('Authorization', 'key=' . $this->getApiKey());

        $response = $client->setRawData($message->toJson(), 'application/json')

                           ->request('POST');

        $this->close();

        switch ($response->getStatus())

        {

            case 500:

                require_once 'Zend/Mobile/Push/Exception/ServerUnavailable.php';

                throw new Zend_Mobile_Push_Exception_ServerUnavailable('The server encountered an internal error, try again');

                break;

            case 503:

                require_once 'Zend/Mobile/Push/Exception/ServerUnavailable.php';

                throw new Zend_Mobile_Push_Exception_ServerUnavailable('The server was unavailable, check Retry-After header');

                break;

            case 401:

                require_once 'Zend/Mobile/Push/Exception/InvalidAuthToken.php';

                throw new Zend_Mobile_Push_Exception_InvalidAuthToken('There was an error authenticating the sender account');

                break;

            case 400:

                require_once 'Zend/Mobile/Push/Exception/InvalidPayload.php';

                throw new Zend_Mobile_Push_Exception_InvalidPayload('The request could not be parsed as JSON or contains invalid fields');

                break;

        }

        return new Zend_Mobile_Push_Response_Gcm($response->getBody(), $message);

    }

}