Chris@0: <?php
Chris@0: /**
Chris@0:  * Zend Framework (http://framework.zend.com/)
Chris@0:  *
Chris@0:  * @link      http://github.com/zendframework/zf2 for the canonical source repository
Chris@0:  * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
Chris@0:  * @license   http://framework.zend.com/license/new-bsd New BSD License
Chris@0:  */
Chris@0: 
Chris@0: namespace Zend\Feed\Writer;
Chris@0: 
Chris@0: use Traversable;
Chris@0: 
Chris@0: abstract class FeedFactory
Chris@0: {
Chris@0:     /**
Chris@0:      * Create and return a Feed based on data provided.
Chris@0:      *
Chris@0:      * @param  array|Traversable $data
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Feed
Chris@0:      */
Chris@0:     public static function factory($data)
Chris@0:     {
Chris@12:         if (! is_array($data) && ! $data instanceof Traversable) {
Chris@0:             throw new Exception\InvalidArgumentException(sprintf(
Chris@0:                 '%s expects an array or Traversable argument; received "%s"',
Chris@0:                 __METHOD__,
Chris@0:                 (is_object($data) ? get_class($data) : gettype($data))
Chris@0:             ));
Chris@0:         }
Chris@0: 
Chris@0:         $feed = new Feed();
Chris@0: 
Chris@0:         foreach ($data as $key => $value) {
Chris@0:             // Setters
Chris@0:             $key    = static::convertKey($key);
Chris@0:             $method = 'set' . $key;
Chris@0:             if (method_exists($feed, $method)) {
Chris@0:                 switch ($method) {
Chris@0:                     case 'setfeedlink':
Chris@12:                         if (! is_array($value)) {
Chris@0:                             // Need an array
Chris@0:                             break;
Chris@0:                         }
Chris@12:                         if (! array_key_exists('link', $value) || ! array_key_exists('type', $value)) {
Chris@0:                             // Need both keys to set this correctly
Chris@0:                             break;
Chris@0:                         }
Chris@0:                         $feed->setFeedLink($value['link'], $value['type']);
Chris@0:                         break;
Chris@0:                     default:
Chris@0:                         $feed->$method($value);
Chris@0:                         break;
Chris@0:                 }
Chris@0:                 continue;
Chris@0:             }
Chris@0: 
Chris@0:             // Entries
Chris@0:             if ('entries' == $key) {
Chris@0:                 static::createEntries($value, $feed);
Chris@0:                 continue;
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         return $feed;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Normalize a key
Chris@0:      *
Chris@0:      * @param  string $key
Chris@0:      * @return string
Chris@0:      */
Chris@0:     protected static function convertKey($key)
Chris@0:     {
Chris@0:         $key = str_replace('_', '', strtolower($key));
Chris@0:         return $key;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Create and attach entries to a feed
Chris@0:      *
Chris@0:      * @param  array|Traversable $entries
Chris@0:      * @param  Feed $feed
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return void
Chris@0:      */
Chris@0:     protected static function createEntries($entries, Feed $feed)
Chris@0:     {
Chris@12:         if (! is_array($entries) && ! $entries instanceof Traversable) {
Chris@0:             throw new Exception\InvalidArgumentException(sprintf(
Chris@0:                 '%s::factory expects the "entries" value to be an array or Traversable; received "%s"',
Chris@0:                 get_called_class(),
Chris@0:                 (is_object($entries) ? get_class($entries) : gettype($entries))
Chris@0:             ));
Chris@0:         }
Chris@0: 
Chris@0:         foreach ($entries as $data) {
Chris@12:             if (! is_array($data) && ! $data instanceof Traversable && ! $data instanceof Entry) {
Chris@0:                 throw new Exception\InvalidArgumentException(sprintf(
Chris@0:                     '%s expects an array, Traversable, or Zend\Feed\Writer\Entry argument; received "%s"',
Chris@0:                     __METHOD__,
Chris@0:                     (is_object($data) ? get_class($data) : gettype($data))
Chris@0:                 ));
Chris@0:             }
Chris@0: 
Chris@0:             // Use case 1: Entry item
Chris@0:             if ($data instanceof Entry) {
Chris@0:                 $feed->addEntry($data);
Chris@0:                 continue;
Chris@0:             }
Chris@0: 
Chris@0:             // Use case 2: iterate item and populate entry
Chris@0:             $entry = $feed->createEntry();
Chris@0:             foreach ($data as $key => $value) {
Chris@0:                 $key    = static::convertKey($key);
Chris@0:                 $method = 'set' . $key;
Chris@12:                 if (! method_exists($entry, $method)) {
Chris@0:                     continue;
Chris@0:                 }
Chris@0:                 $entry->$method($value);
Chris@0:             }
Chris@0:             $feed->addEntry($entry);
Chris@0:         }
Chris@0:     }
Chris@0: }