<?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 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * @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_Feed

{

    /**

     * Array of Feed data for rendering by Extension's renderers

     *

     * @var array

     */

    protected $_data = array();

    /**

     * Encoding of all text values

     *

     * @var string

     */

    protected $_encoding = 'UTF-8';

    /**

     * Set feed encoding

     * 

     * @param  string $enc 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function setEncoding($enc)

    {

        $this->_encoding = $enc;

        return $this;

    }

    /**

     * Get feed encoding

     * 

     * @return string

     */

    public function getEncoding()

    {

        return $this->_encoding;

    }

    /**

     * Set a block value of "yes" or "no". You may also set an empty string.

     *

     * @param  string

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function setItunesBlock($value)

    {

        if (!ctype_alpha($value) && strlen($value) > 0) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: "block" may only'

            . ' contain alphabetic characters');

        }

        if (iconv_strlen($value, $this->getEncoding()) > 255) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: "block" may only'

            . ' contain a maximum of 255 characters');

        }

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

        return $this;

    }

    /**

     * Add feed authors

     * 

     * @param  array $values 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function addItunesAuthors(array $values)

    {

        foreach ($values as $value) {

            $this->addItunesAuthor($value);

        }

        return $this;

    }

    /**

     * Add feed author

     * 

     * @param  string $value 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function addItunesAuthor($value)

    {

        if (iconv_strlen($value, $this->getEncoding()) > 255) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: any "author" may only'

            . ' contain a maximum of 255 characters each');

        }

        if (!isset($this->_data['authors'])) {

            $this->_data['authors'] = array();

        }

        $this->_data['authors'][] = $value;   

        return $this;

    }

    /**

     * Set feed categories

     * 

     * @param  array $values 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function setItunesCategories(array $values)

    {

        if (!isset($this->_data['categories'])) {

            $this->_data['categories'] = array();

        }

        foreach ($values as $key=>$value) {

            if (!is_array($value)) {

                if (iconv_strlen($value, $this->getEncoding()) > 255) {

                    require_once 'Zend/Feed/Exception.php';

                    throw new Zend_Feed_Exception('invalid parameter: any "category" may only'

                    . ' contain a maximum of 255 characters each');

                }

                $this->_data['categories'][] = $value;

            } else {

                if (iconv_strlen($key, $this->getEncoding()) > 255) {

                    require_once 'Zend/Feed/Exception.php';

                    throw new Zend_Feed_Exception('invalid parameter: any "category" may only'

                    . ' contain a maximum of 255 characters each');

                }

                $this->_data['categories'][$key] = array();

                foreach ($value as $val) {

                    if (iconv_strlen($val, $this->getEncoding()) > 255) {

                        require_once 'Zend/Feed/Exception.php';

                        throw new Zend_Feed_Exception('invalid parameter: any "category" may only'

                        . ' contain a maximum of 255 characters each');

                    }

                    $this->_data['categories'][$key][] = $val;

                } 

            }

        }

        return $this;

    }

    /**

     * Set feed image (icon)

     * 

     * @param  string $value 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function setItunesImage($value)

    {

        if (!Zend_Uri::check($value)) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: "image" may only'

            . ' be a valid URI/IRI');

        }

        if (!in_array(substr($value, -3), array('jpg','png'))) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: "image" may only'

            . ' use file extension "jpg" or "png" which must be the last three'

            . ' characters of the URI (i.e. no query string or fragment)');

        }

        $this->_data['image'] = $value;

        return $this;

    }

    /**

     * Set feed cumulative duration

     * 

     * @param  string $value 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function setItunesDuration($value)

    {

        $value = (string) $value;

        if (!ctype_digit($value)

            && !preg_match("/^\d+:[0-5]{1}[0-9]{1}$/", $value)

            && !preg_match("/^\d+:[0-5]{1}[0-9]{1}:[0-5]{1}[0-9]{1}$/", $value)

        ) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: "duration" may only'

            . ' be of a specified [[HH:]MM:]SS format');

        }

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

        return $this;

    }

    /**

     * Set "explicit" flag

     * 

     * @param  bool $value 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function setItunesExplicit($value)

    {

        if (!in_array($value, array('yes','no','clean'))) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: "explicit" may only'

            . ' be one of "yes", "no" or "clean"');

        }

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

        return $this;

    }

    /**

     * Set feed keywords

     * 

     * @param  array $value 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function setItunesKeywords(array $value)

    {

        if (count($value) > 12) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: "keywords" may only'

            . ' contain a maximum of 12 terms');

        }

        $concat = implode(',', $value);

        if (iconv_strlen($concat, $this->getEncoding()) > 255) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: "keywords" may only'

            . ' have a concatenated length of 255 chars where terms are delimited'

            . ' by a comma');

        }

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

        return $this;

    }

    /**

     * Set new feed URL

     * 

     * @param  string $value 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function setItunesNewFeedUrl($value)

    {

        if (!Zend_Uri::check($value)) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: "newFeedUrl" may only'

            . ' be a valid URI/IRI');

        }

        $this->_data['newFeedUrl'] = $value;

        return $this;

    }

    /**

     * Add feed owners

     * 

     * @param  array $values 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function addItunesOwners(array $values)

    {

        foreach ($values as $value) {

            $this->addItunesOwner($value); 

        }

        return $this;

    }

    /**

     * Add feed owner

     * 

     * @param  string $value 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function addItunesOwner(array $value)

    {

        if (!isset($value['name']) || !isset($value['email'])) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: any "owner" must'

            . ' be an array containing keys "name" and "email"');

        }

        if (iconv_strlen($value['name'], $this->getEncoding()) > 255

            || iconv_strlen($value['email'], $this->getEncoding()) > 255

        ) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: any "owner" may only'

            . ' contain a maximum of 255 characters each for "name" and "email"');

        }

        if (!isset($this->_data['owners'])) {

            $this->_data['owners'] = array();

        }

        $this->_data['owners'][] = $value;

        return $this;

    }

    /**

     * Set feed subtitle

     * 

     * @param  string $value 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function setItunesSubtitle($value)

    {

        if (iconv_strlen($value, $this->getEncoding()) > 255) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: "subtitle" may only'

            . ' contain a maximum of 255 characters');

        }

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

        return $this;

    }

    /**

     * Set feed summary

     * 

     * @param  string $value 

     * @return Zend_Feed_Writer_Extension_ITunes_Feed

     */

    public function setItunesSummary($value)

    {

        if (iconv_strlen($value, $this->getEncoding()) > 4000) {

            require_once 'Zend/Feed/Exception.php';

            throw new Zend_Feed_Exception('invalid parameter: "summary" may only'

            . ' contain a maximum of 4000 characters');

        }

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

        return $this;

    }

    /**

     * Overloading: proxy to internal setters

     * 

     * @param  string $method 

     * @param  array $params 

     * @return mixed

     */

    public function __call($method, array $params)

    {

        $point = Zend_Feed_Writer::lcfirst(substr($method, 9));

        if (!method_exists($this, 'setItunes' . ucfirst($point))

            && !method_exists($this, 'addItunes' . ucfirst($point))

        ) {

            require_once 'Zend/Feed/Writer/Exception/InvalidMethodException.php';

            throw new Zend_Feed_Writer_Exception_InvalidMethodException(

                'invalid method: ' . $method

            );

        }

        if (!array_key_exists($point, $this->_data) || empty($this->_data[$point])) {

            return null;

        }

        return $this->_data[$point];

    }

}