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Current Directory: /home/astoriaah/www/administrator/components/com_widgetkit/plugins/content/rss/src
Viewing File: /home/astoriaah/www/administrator/components/com_widgetkit/plugins/content/rss/src/RSSApp.php
<?php

namespace YOOtheme\Widgetkit\Content\rss;

use YOOtheme\Framework\Application;
use YOOtheme\Framework\ApplicationAware;

class RSSApp extends ApplicationAware
{
    /**
     * Constructor.
     *
     * @param Application $app
     */
    public function __construct(Application $app)
    {
        $this->app = $app;
    }

    public function fetch($params, $content)
    {
        // Cache settings
        $now = time();
        $expires = 5 * 60;

        // Cache invalid?
        if (
            !isset($content['hash']) || // never cached
            $now - $content['hashed'] > $expires || // cached values too old
            md5(serialize($params)) != $content['hash']
        ) {
            // content settings have changed
            $feed = simplexml_load_string($this->url_get_contents($params['source']));
            $posts = [];

            if ($feed && isset($feed->channel->item)) {
                foreach ($feed->channel->item as $item) {
                    $posts[] = [
                        'title' => (string) $item->title,
                        'content' => (string) $item->description,
                        'date' => (string) $item->pubDate,
                        'link' => trim($item->link),
                    ];

                    if (
                        ($params['limit'] && sizeof($posts) == $params['limit']) ||
                        sizeof($posts) == 60
                    ) {
                        break;
                    }
                }

                // write cache
                $content['prepared'] = json_encode($posts);
                $content['hash'] = md5(serialize($params));
                $content['hashed'] = $now;

                $this->app['content']->save($content->toArray());

                return $posts;
            }

            if (!isset($content['prepared']) && md5(serialize($params)) != $content['hash']) {
                return $posts;
            }
        }

        // read from cache
        $posts = json_decode($content['prepared'], true);

        return $posts ?: [];
    }

    protected function url_get_contents($url)
    {
        $content = '';

        if (function_exists('curl_exec') && ini_get('open_basedir') === '') {
            $conn = curl_init($url);
            curl_setopt($conn, CURLOPT_SSL_VERIFYPEER, true);
            curl_setopt($conn, CURLOPT_FRESH_CONNECT, true);
            curl_setopt($conn, CURLOPT_RETURNTRANSFER, 1);

            curl_setopt(
                $conn,
                CURLOPT_USERAGENT,
                'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.52 Safari/537.17'
            );
            curl_setopt($conn, CURLOPT_AUTOREFERER, true);
            curl_setopt($conn, CURLOPT_FOLLOWLOCATION, 1);
            curl_setopt($conn, CURLOPT_VERBOSE, 0);

            $content = curl_exec($conn);
            curl_close($conn);
        }

        if (!$content && function_exists('file_get_contents')) {
            $content = @file_get_contents($url);
        }

        if (!$content && function_exists('fopen') && function_exists('stream_get_contents')) {
            $handle = @fopen($url, 'r');
            $content = @stream_get_contents($handle);
        }

        return $content;
    }

    /**
     * Hashes request parameters.
     *
     * @param $params
     * @return string
     */
    protected function hash($params)
    {
        $fields = [$params];

        return md5(serialize($fields));
    }
}