<?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_Reader
 * @copyright  Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id$
 */

/**
 * @see Zend_Feed_Reader
 */
require_once 'Zend/Feed/Reader.php';

/**
 * @see Zend_Feed_Reader_Extension_EntryAbstract
 */
require_once 'Zend/Feed/Reader/Extension/EntryAbstract.php';

/**
 * @category   Zend
 * @package    Zend_Feed_Reader
 * @copyright  Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Feed_Reader_Extension_Podcast_Entry extends Zend_Feed_Reader_Extension_EntryAbstract
{
    /**
     * Get the entry author
     *
     * @return string
     */
    public function getCastAuthor()
    {
        if (isset($this->_data['author'])) {
            return $this->_data['author'];
        }

        $author = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:author)');

        if (!$author) {
            $author = null;
        }

        $this->_data['author'] = $author;

        return $this->_data['author'];
    }

    /**
     * Get the entry block
     *
     * @return string
     */
    public function getBlock()
    {
        if (isset($this->_data['block'])) {
            return $this->_data['block'];
        }

        $block = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:block)');

        if (!$block) {
            $block = null;
        }

        $this->_data['block'] = $block;

        return $this->_data['block'];
    }

    /**
     * Get the entry duration
     *
     * @return string
     */
    public function getDuration()
    {
        if (isset($this->_data['duration'])) {
            return $this->_data['duration'];
        }

        $duration = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:duration)');

        if (!$duration) {
            $duration = null;
        }

        $this->_data['duration'] = $duration;

        return $this->_data['duration'];
    }

    /**
     * Get the entry explicit
     *
     * @return string
     */
    public function getExplicit()
    {
        if (isset($this->_data['explicit'])) {
            return $this->_data['explicit'];
        }

        $explicit = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:explicit)');

        if (!$explicit) {
            $explicit = null;
        }

        $this->_data['explicit'] = $explicit;

        return $this->_data['explicit'];
    }

    /**
     * Get the entry keywords
     *
     * @return string
     */
    public function getKeywords()
    {
        if (isset($this->_data['keywords'])) {
            return $this->_data['keywords'];
        }

        $keywords = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:keywords)');

        if (!$keywords) {
            $keywords = null;
        }

        $this->_data['keywords'] = $keywords;

        return $this->_data['keywords'];
    }

    /**
     * Get the entry subtitle
     *
     * @return string
     */
    public function getSubtitle()
    {
        if (isset($this->_data['subtitle'])) {
            return $this->_data['subtitle'];
        }

        $subtitle = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:subtitle)');

        if (!$subtitle) {
            $subtitle = null;
        }

        $this->_data['subtitle'] = $subtitle;

        return $this->_data['subtitle'];
    }

    /**
     * Get the entry summary
     *
     * @return string
     */
    public function getSummary()
    {
        if (isset($this->_data['summary'])) {
            return $this->_data['summary'];
        }

        $summary = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:summary)');

        if (!$summary) {
            $summary = null;
        }

        $this->_data['summary'] = $summary;

        return $this->_data['summary'];
    }

    /**
     * Register iTunes namespace
     *
     */
    protected function _registerNamespaces()
    {
        $this->_xpath->registerNamespace('itunes', 'http://www.itunes.com/dtds/podcast-1.0.dtd');
    }
}
