<?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_Mail

 * @subpackage Transport

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

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

 * @version    $Id$

 */

/**

 * @see Zend_Mail_Transport_Abstract

 */

require_once 'Zend/Mail/Transport/Abstract.php';

/**

 * File transport

 *

 * Class for saving outgoing emails in filesystem

 *

 * @category   Zend

 * @package    Zend_Mail

 * @subpackage Transport

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

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

 */

class Zend_Mail_Transport_File extends Zend_Mail_Transport_Abstract

{

    /**

     * Target directory for saving sent email messages

     *

     * @var string

     */

    protected $_path;

    /**

     * Callback function generating a file name

     *

     * @var string|array

     */

    protected $_callback;

    /**

     * Constructor

     *

     * @param  array|Zend_Config $options OPTIONAL (Default: null)

     * @return void

     */

    public function __construct($options = null)

    {

        if ($options instanceof Zend_Config) {

            $options = $options->toArray();

        } elseif (!is_array($options)) {

            $options = array();

        }

        // Making sure we have some defaults to work with

        if (!isset($options['path'])) {

            $options['path'] = sys_get_temp_dir();

        }

        if (!isset($options['callback'])) {

            $options['callback'] = array($this, 'defaultCallback');

        }

        $this->setOptions($options);

    }

    /**

     * Sets options

     *

     * @param  array $options

     * @return void

     */

    public function setOptions(array $options)

    {

        if (isset($options['path'])&& is_dir($options['path'])) {

            $this->_path = $options['path'];

        }

        if (isset($options['callback']) && is_callable($options['callback'])) {

            $this->_callback = $options['callback'];

        }

    }

    /**

     * Saves e-mail message to a file

     *

     * @return void

     * @throws Zend_Mail_Transport_Exception on not writable target directory

     * @throws Zend_Mail_Transport_Exception on file_put_contents() failure

     */

    protected function _sendMail()

    {

        $file = $this->_path . DIRECTORY_SEPARATOR . call_user_func($this->_callback, $this);

        if (!is_writable(dirname($file))) {

            require_once 'Zend/Mail/Transport/Exception.php';

            throw new Zend_Mail_Transport_Exception(sprintf(

                'Target directory "%s" does not exist or is not writable',

                dirname($file)

            ));

        }

        $email = $this->header . $this->EOL . $this->body;

        if (!file_put_contents($file, $email)) {

            require_once 'Zend/Mail/Transport/Exception.php';

            throw new Zend_Mail_Transport_Exception('Unable to send mail');

        }

    }

    /**

     * Default callback for generating filenames

     *

     * @param Zend_Mail_Transport_File File transport instance

     * @return string

     */

    public function defaultCallback($transport) 

    {

        return 'ZendMail_' . $_SERVER['REQUEST_TIME'] . '_' . mt_rand() . '.tmp';

    }

}