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<?php
namespace Providers;
require_once('Provider.php');
require_once('Item.php');
class Rss extends \Providers\Provider {
private $_feedUrl;
private $_feedXml;
public function __construct($feed, $options=[]) {
parent::__construct($feed, $options);
$config = json_decode(file_get_contents('../config/rss.json'), TRUE);
if (isset($config[$feed])) {
$this->_feedUrl = $config[$feed];
} else {
throw new Exception('RSS feed "' . $feed . '" undefined');
}
}
protected function _getCachePath() {
return '../cache/rss.%s';
}
protected function _fetchItems() {
$this->_feedXml = new \SimpleXMLElement($this->_feedUrl, 0, TRUE);
$feedItems = $this->_feedXml->channel->item ?: $this->_feedXml->entry;
$items = [];
foreach ($feedItems as $item) {
$items[] = $item->asXML();
}
return $items;
}
protected function _mapItems($content) {
$items = [];
foreach ($content as $contentString) {
$item = new \SimpleXMLElement(str_replace(['content:encoded>', '<media:', '</media:'], ['content>', '<', '</'], $contentString));
$itemObject = new Item();
$itemObject->ID = strval($item->id ?: $item->guid);
$itemObject->Title = strval($item->title);
$itemObject->Time = strval($item->published ?: $item->pubDate);
$itemObject->Text = strval($item->summary ?: $item->description ?: $item->content);
$itemObject->Link = strval(isset($item->link['href']) ? $item->link->attributes()['href'] : $item->link);
$itemObject->Author = strval(is_string($item->author) ? $item->author : $item->author->name);
$items[] = $itemObject;
}
return $items;
}
protected function _spamFilter($content) {
return $content;
}
protected function _sortContent($content) {
return $content;
}
public function title() {
$cacheFile = sprintf($this->_getCachePath() . '.title', $this->_feed);
if (!file_exists($cacheFile)) {
$this->_fetchItems();
}
if ($this->_feedXml) {
$title = strval($this->_feedXml->title ?: $this->_feedXml->channel->title);
file_put_contents($cacheFile, $title);
return $title;
} else {
return file_get_contents($cacheFile);
}
}
}
?>
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