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<?php |
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/* |
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* This file is part of the feed-io package. |
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* |
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* (c) Alexandre Debril <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace FeedIo\Formatter; |
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use FeedIo\Feed; |
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use FeedIo\FeedInterface; |
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use FeedIo\FormatterInterface; |
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class JsonFormatter implements FormatterInterface |
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{ |
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/** |
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* @param FeedInterface $feed |
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* @return string |
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*/ |
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public function toString(FeedInterface $feed) |
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{ |
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return json_encode($this->toArray($feed)); |
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} |
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/** |
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* @param FeedInterface $feed |
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* @return array |
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*/ |
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public function toArray(FeedInterface $feed) |
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{ |
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return array_filter([ |
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'version' => 'https://jsonfeed.org/version/1', |
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'title' => $feed->getTitle(), |
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'description' => $feed->getDescription(), |
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'home_page_url' => $feed->getLink(), |
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'feed_url' => $feed->getUrl(), |
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'id' => $feed->getPublicId(), |
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'items' => iterator_to_array($this->itemsToArray($feed)), |
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]); |
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} |
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/** |
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* @param FeedInterface $feed |
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* @return \Generator |
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*/ |
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public function itemsToArray(FeedInterface $feed) |
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{ |
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foreach ($feed as $item) { |
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yield $this->itemToArray($item); |
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} |
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} |
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/** |
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* @param Feed\ItemInterface $item |
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* @return array |
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*/ |
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public function itemToArray(Feed\ItemInterface $item) |
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{ |
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$array = $this->itemToBaseArray($item); |
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$this->handleAuthor($item, $array); |
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$this->handleMedia($item, $array); |
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$this->handleDate($item, $array); |
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return array_filter($array); |
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} |
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/** |
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* @param Feed\ItemInterface $item |
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* @return array |
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*/ |
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public function itemToBaseArray(Feed\ItemInterface $item) |
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{ |
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$offset = $this->isHtml($item->getDescription()) ? 'content_html':'content_txt'; |
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return [ |
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'id' => $item->getPublicId(), |
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'title' => $item->getTitle(), |
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$offset => $item->getDescription(), |
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'url' => $item->getLink(), |
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]; |
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} |
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/** |
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* @param $string |
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* @return bool |
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*/ |
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public function isHtml($string) |
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{ |
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return $string !== strip_tags($string); |
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} |
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/** |
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* @param Feed\ItemInterface $item |
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* @param array $array |
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* @return array |
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*/ |
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public function handleAuthor(Feed\ItemInterface $item, array &$array) |
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{ |
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if (! is_null($item->getAuthor())) { |
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$array['author'] = array_filter([ |
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'name' => $item->getAuthor()->getName(), |
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'url' => $item->getAuthor()->getUri(), |
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]); |
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} |
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return $array; |
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} |
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/** |
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* @param Feed\ItemInterface $item |
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* @param array $array |
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* @return array |
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*/ |
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public function handleMedia(Feed\ItemInterface $item, array &$array) |
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{ |
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if ($item->hasMedia()) { |
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$array['image'] = $item->getMedias()->current()->getUrl(); |
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} |
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return $array; |
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} |
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/** |
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* @param Feed\ItemInterface $item |
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* @param array $array |
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* @return array |
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*/ |
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public function handleDate(Feed\ItemInterface $item, array &$array) |
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{ |
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if (! is_null($item->getLastModified())) { |
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$array['date_published'] = $item->getLastModified()->format(\DateTime::RFC3339); |
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} |
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return $array; |
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} |
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} |
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alexdebril /
feed-io
