<?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_Feed_Writer

 * @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: Feed.php 22662 2010-07-24 17:37:36Z mabe $

 */

/**

 * @see Zend_Feed_Writer_Extension_RendererAbstract

 */

require_once 'Zend/Feed/Writer/Extension/RendererAbstract.php';

/**

 * @category   Zend

 * @package    Zend_Feed_Writer

 * @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_Feed_Writer_Extension_ITunes_Renderer_Feed

    extends Zend_Feed_Writer_Extension_RendererAbstract

{

    /**

     * Set to TRUE if a rendering method actually renders something. This

     * is used to prevent premature appending of a XML namespace declaration

     * until an element which requires it is actually appended.

     *

     * @var bool

     */

    protected $_called = false;

    /**

     * Render feed

     * 

     * @return void

     */

    public function render()

    {

        $this->_setAuthors($this->_dom, $this->_base);

        $this->_setBlock($this->_dom, $this->_base);

        $this->_setCategories($this->_dom, $this->_base);

        $this->_setImage($this->_dom, $this->_base);

        $this->_setDuration($this->_dom, $this->_base);

        $this->_setExplicit($this->_dom, $this->_base);

        $this->_setKeywords($this->_dom, $this->_base);

        $this->_setNewFeedUrl($this->_dom, $this->_base);

        $this->_setOwners($this->_dom, $this->_base);

        $this->_setSubtitle($this->_dom, $this->_base);

        $this->_setSummary($this->_dom, $this->_base);

        if ($this->_called) {

            $this->_appendNamespaces();

        }

    }

    /**

     * Append feed namespaces

     * 

     * @return void

     */

    protected function _appendNamespaces()

    {

        $this->getRootElement()->setAttribute('xmlns:itunes',

            'http://www.itunes.com/dtds/podcast-1.0.dtd');  

    }

    /**

     * Set feed authors

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setAuthors(DOMDocument $dom, DOMElement $root)

    {

        $authors = $this->getDataContainer()->getItunesAuthors();

        if (!$authors || empty($authors)) {

            return;

        }

        foreach ($authors as $author) {

            $el = $dom->createElement('itunes:author');

            $text = $dom->createTextNode($author);

            $el->appendChild($text);

            $root->appendChild($el);

        }

        $this->_called = true;

    }

    /**

     * Set feed itunes block

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setBlock(DOMDocument $dom, DOMElement $root)

    {

        $block = $this->getDataContainer()->getItunesBlock();

        if ($block === null) {

            return;

        }

        $el = $dom->createElement('itunes:block');

        $text = $dom->createTextNode($block);

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set feed categories

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setCategories(DOMDocument $dom, DOMElement $root)

    {

        $cats = $this->getDataContainer()->getItunesCategories();

        if (!$cats || empty($cats)) {

            return;

        }

        foreach ($cats as $key=>$cat) {

            if (!is_array($cat)) {

                $el = $dom->createElement('itunes:category');

                $el->setAttribute('text', $cat);

                $root->appendChild($el);

            } else {

                $el = $dom->createElement('itunes:category');

                $el->setAttribute('text', $key);

                $root->appendChild($el);

                foreach ($cat as $subcat) {

                    $el2 = $dom->createElement('itunes:category');

                    $el2->setAttribute('text', $subcat);

                    $el->appendChild($el2);

                }

            }

        }

        $this->_called = true;

    }

    /**

     * Set feed image (icon)

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setImage(DOMDocument $dom, DOMElement $root)

    {

        $image = $this->getDataContainer()->getItunesImage();

        if (!$image) {

            return;

        }

        $el = $dom->createElement('itunes:image');

        $el->setAttribute('href', $image);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set feed cumulative duration

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setDuration(DOMDocument $dom, DOMElement $root)

    {

        $duration = $this->getDataContainer()->getItunesDuration();

        if (!$duration) {

            return;

        }

        $el = $dom->createElement('itunes:duration');

        $text = $dom->createTextNode($duration);

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set explicit flag

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setExplicit(DOMDocument $dom, DOMElement $root)

    {

        $explicit = $this->getDataContainer()->getItunesExplicit();

        if ($explicit === null) {

            return;

        }

        $el = $dom->createElement('itunes:explicit');

        $text = $dom->createTextNode($explicit);

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set feed keywords

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setKeywords(DOMDocument $dom, DOMElement $root)

    {

        $keywords = $this->getDataContainer()->getItunesKeywords();

        if (!$keywords || empty($keywords)) {

            return;

        }

        $el = $dom->createElement('itunes:keywords');

        $text = $dom->createTextNode(implode(',', $keywords));

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set feed's new URL

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setNewFeedUrl(DOMDocument $dom, DOMElement $root)

    {

        $url = $this->getDataContainer()->getItunesNewFeedUrl();

        if (!$url) {

            return;

        }

        $el = $dom->createElement('itunes:new-feed-url');

        $text = $dom->createTextNode($url);

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set feed owners 

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setOwners(DOMDocument $dom, DOMElement $root)

    {

        $owners = $this->getDataContainer()->getItunesOwners();

        if (!$owners || empty($owners)) {

            return;

        }

        foreach ($owners as $owner) {

            $el = $dom->createElement('itunes:owner');

            $name = $dom->createElement('itunes:name');

            $text = $dom->createTextNode($owner['name']);

            $name->appendChild($text);

            $email = $dom->createElement('itunes:email');

            $text = $dom->createTextNode($owner['email']);

            $email->appendChild($text);

            $root->appendChild($el);

            $el->appendChild($name);

            $el->appendChild($email);

        }

        $this->_called = true;

    }

    /**

     * Set feed subtitle

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setSubtitle(DOMDocument $dom, DOMElement $root)

    {

        $subtitle = $this->getDataContainer()->getItunesSubtitle();

        if (!$subtitle) {

            return;

        }

        $el = $dom->createElement('itunes:subtitle');

        $text = $dom->createTextNode($subtitle);

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set feed summary

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setSummary(DOMDocument $dom, DOMElement $root)

    {

        $summary = $this->getDataContainer()->getItunesSummary();

        if (!$summary) {

            return;

        }

        $el = $dom->createElement('itunes:summary');

        $text = $dom->createTextNode($summary);

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

}