<?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

 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)

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

 * @version    $Id$

 */



/** Zend_Mobile_Push_Message_Abstract **/

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



/**

 * Gcm Message

 *

 * @category   Zend

 * @package    Zend_Mobile

 * @subpackage Zend_Mobile_Push

 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)

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

 * @version    $Id$

 */

class Zend_Mobile_Push_Message_Gcm extends Zend_Mobile_Push_Message_Abstract

{



    /**

     * Tokens

     *

     * @var array

     */

    protected $_token = array();



    /**

     * Data key value pairs

     * 

     * @var array

     */

    protected $_data = array();



    /**

     * Delay while idle

     *

     * @var boolean

     */

    protected $_delay = false;



    /**

     * Time to live in seconds

     * 

     * @var int

     */

    protected $_ttl = 0;



    /**

     * Add a Token

     *

     * @param  string $token

     * @return Zend_Mobile_Push_Message_Gcm

     * @throws Zend_Mobile_Push_Message_Exception

     */

    public function addToken($token)

    {

        if (!is_string($token)) {

            throw new Zend_Mobile_Push_Message_Exception('$token must be a string');

        }

        if (!in_array($token, $this->_token)) {

           $this->_token[] = $token;

        }

        return $this;

    }



    /**

     * Set Token

     *

     * @param  string|array $token

     * @return Zend_Mobile_Push_Message_Gcm

     * @throws Zend_Mobile_Push_Message_Exception

     */

    public function setToken($token)

    {

        $this->clearToken();

        if (is_string($token)) {

            $this->addToken($token);

        } else if (is_array($token)) {

            foreach ($token as $t) {

                $this->addToken($t);

            }

        }

        return $this;

    }



    /**

     * Clear Tokens

     *

     * @return Zend_Mobile_Push_Message_Gcm

     */

    public function clearToken()

    {

        $this->_token = array();

        return $this;

    }





    /**

     * Add Data

     *

     * @param  string $key

     * @param  string $value

     * @return Zend_Mobile_Push_Message_Gcm

     * @throws Zend_Mobile_Push_Message_Exception

     */

    public function addData($key, $value)

    {

        if (!is_string($key)) {

            throw new Zend_Mobile_Push_Message_Exception('$key is not a string');

        }

        if (!is_scalar($value)) {

            throw new Zend_Mobile_Push_Message_Exception('$value is not a string');

        }

        $this->_data[$key] = $value;

        return $this;

    }



    /**

     * Set Data

     *

     * @param array $data

     * @return Zend_Mobile_Push_Message_Gcm

     * @throws Zend_Mobile_Push_Message_Exception

     */

    public function setData(array $data)

    {

        $this->clearData();

        foreach ($data as $k => $v) {

            $this->addData($k, $v);

        }

        return $this;

    }



    /**

     * Clear Data

     *

     * @return Zend_Mobile_Push_Message_Gcm

     */

    public function clearData()

    {

        $this->_data = array();

        return $this;

    }



    /**

     * Get Data

     *

     * @return array

     */

    public function getData()

    {

        return $this->_data;

    }



    /**

     * Set Delay While Idle

     *

     * @param boolean $delay

     * @return Zend_Mobile_Push_Message_Gcm

     * @throws Zend_Mobile_Push_Message_Exception

     */

    public function setDelayWhileIdle($delay)

    {

        if (!is_bool($delay)) {

            throw new Zend_Mobile_Push_Message_Exception('$delay must be boolean');

        }

        $this->_delay = $delay;

        return $this;

    }



    /**

     * Get Delay While Idle

     *

     * @return boolean

     */

    public function getDelayWhileIdle()

    {

        return $this->_delay;

    }



    /**

     * Set time to live

     * If $secs is set to 0 it will be handled as

     * not being set.

     *

     * @param  int $secs

     * @return Zend_Mobile_Push_Message_Gcm

     */

    public function setTtl($secs)

    {

        if (!is_numeric($secs)) {

            throw new Zend_Mobile_Push_Message_Exception('$secs must be numeric');

        }

        $this->_ttl = (int) $secs;

        return $this;

    }



    /**

     * Get time to live

     *

     * @return int

     */

    public function getTtl()

    {

        return $this->_ttl;

    }



    /**

     * Validate this is a proper Gcm message

     * Does not validate size.

     *

     * @return boolean

     */

    public function validate()

    {

        if (!is_array($this->_token) || empty($this->_token)) {

            return false;

        }

        if ($this->_ttl > 0 &&

            (!is_scalar($this->_id) ||

            strlen($this->_id) === 0)) {

            return false;

        }

        return true;

    }



    /**

     * To Json utility method

     * Takes the data and properly assigns it to

     * a json encoded array to match the Gcm format.

     *

     * @return string

     */

    public function toJson()

    {

        $json = array();

        if ($this->_token) {

            $json['registration_ids'] = $this->_token;

        }

        if ($this->_id) {

            $json['collapse_key'] = (string) $this->_id;

        }

        if ($this->_data) {

            $json['data'] = $this->_data;

        }

        if ($this->_delay) {

            $json['delay_while_idle'] = $this->_delay;

        }

        if ($this->_ttl) {

            $json['time_to_live'] = $this->_ttl;

        }

        return json_encode($json);

    }

}