<?php

/*

 * This file is part of SwiftMailer.

 * (c) 2004-2009 Chris Corbyn

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

/**

 * Creates MIME headers.

 * @package Swift

 * @subpackage Mime

 * @author Chris Corbyn

 */

class Swift_Mime_SimpleHeaderFactory implements Swift_Mime_HeaderFactory

{

  /** The HeaderEncoder used by these headers */

  private $_encoder;

  /** The Encoder used by parameters */

  private $_paramEncoder;

  /** The Grammar */

  private $_grammar;

  /** The charset of created Headers */

  private $_charset;

  /**

   * Creates a new SimpleHeaderFactory using $encoder and $paramEncoder.

   * @param Swift_Mime_HeaderEncoder $encoder

   * @param Swift_Encoder $paramEncoder

   * @param Swift_Mime_Grammar $grammar

   * @param string $charset

   */

  public function __construct(Swift_Mime_HeaderEncoder $encoder,

    Swift_Encoder $paramEncoder, Swift_Mime_Grammar $grammar, $charset = null)

  {

    $this->_encoder = $encoder;

    $this->_paramEncoder = $paramEncoder;

    $this->_grammar = $grammar;

    $this->_charset = $charset;

  }

  /**

   * Create a new Mailbox Header with a list of $addresses.

   * @param string $name

   * @param array|string $addresses

   * @return Swift_Mime_Header

   */

  public function createMailboxHeader($name, $addresses = null)

  {

    $header = new Swift_Mime_Headers_MailboxHeader($name, $this->_encoder, $this->_grammar);

    if (isset($addresses))

    {

      $header->setFieldBodyModel($addresses);

    }

    $this->_setHeaderCharset($header);

    return $header;

  }

  /**

   * Create a new Date header using $timestamp (UNIX time).

   * @param string $name

   * @param int $timestamp

   * @return Swift_Mime_Header

   */

  public function createDateHeader($name, $timestamp = null)

  {

    $header = new Swift_Mime_Headers_DateHeader($name, $this->_grammar);

    if (isset($timestamp))

    {

      $header->setFieldBodyModel($timestamp);

    }

    $this->_setHeaderCharset($header);

    return $header;

  }

  /**

   * Create a new basic text header with $name and $value.

   * @param string $name

   * @param string $value

   * @return Swift_Mime_Header

   */

  public function createTextHeader($name, $value = null)

  {

    $header = new Swift_Mime_Headers_UnstructuredHeader($name, $this->_encoder, $this->_grammar);

    if (isset($value))

    {

      $header->setFieldBodyModel($value);

    }

    $this->_setHeaderCharset($header);

    return $header;

  }

  /**

   * Create a new ParameterizedHeader with $name, $value and $params.

   * @param string $name

   * @param string $value

   * @param array $params

   * @return Swift_Mime_ParameterizedHeader

   */

  public function createParameterizedHeader($name, $value = null,

    $params = array())

  {

    $header = new Swift_Mime_Headers_ParameterizedHeader($name,

      $this->_encoder, (strtolower($name) == 'content-disposition')

        ? $this->_paramEncoder

        : null,

        $this->_grammar

      );

    if (isset($value))

    {

      $header->setFieldBodyModel($value);

    }

    foreach ($params as $k => $v)

    {

      $header->setParameter($k, $v);

    }

    $this->_setHeaderCharset($header);

    return $header;

  }

  /**

   * Create a new ID header for Message-ID or Content-ID.

   * @param string $name

   * @param string|array $ids

   * @return Swift_Mime_Header

   */

  public function createIdHeader($name, $ids = null)

  {

    $header = new Swift_Mime_Headers_IdentificationHeader($name, $this->_grammar);

    if (isset($ids))

    {

      $header->setFieldBodyModel($ids);

    }

    $this->_setHeaderCharset($header);

    return $header;

  }

  /**

   * Create a new Path header with an address (path) in it.

   * @param string $name

   * @param string $path

   * @return Swift_Mime_Header

   */

  public function createPathHeader($name, $path = null)

  {

    $header = new Swift_Mime_Headers_PathHeader($name, $this->_grammar);

    if (isset($path))

    {

      $header->setFieldBodyModel($path);

    }

    $this->_setHeaderCharset($header);

    return $header;

  }

  /**

   * Notify this observer that the entity's charset has changed.

   * @param string $charset

   */

  public function charsetChanged($charset)

  {

    $this->_charset = $charset;

    $this->_encoder->charsetChanged($charset);

    $this->_paramEncoder->charsetChanged($charset);

  }

  // -- Private methods

  /** Apply the charset to the Header */

  private function _setHeaderCharset(Swift_Mime_Header $header)

  {

    if (isset($this->_charset))

    {

      $header->setCharset($this->_charset);

    }

  }

}