Nextcloud-News/lib/Fetcher/Fetcher.php

<?php
/**
 * Nextcloud - News
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author    Alessandro Cosentino <cosenal@gmail.com>
 * @author    Bernhard Posselt <dev@bernhard-posselt.com>
 * @copyright 2012 Alessandro Cosentino
 * @copyright 2012-2014 Bernhard Posselt
 */

namespace OCA\News\Fetcher;

class Fetcher
{

    private $fetchers;

    public function __construct()
    {
        $this->fetchers = [];
    }


    /**
     * Add an additional fetcher
     *
     * @param IFeedFetcher $fetcher the fetcher
     */
    public function registerFetcher(IFeedFetcher $fetcher)
    {
        $this->fetchers[] = $fetcher;
    }

    /**
     * Fetch a feed from remote
     *
     * @param  string  $url               remote url of the feed
     * @param  boolean $getFavicon        if the favicon should also be fetched, defaults to true
     * @param  string  $lastModified      a last modified value from an http header defaults to false.
     *                                    If lastModified matches the http header from the feed no results are fetched
     * @param  string  $etag              an etag from an http header.
     *                                    If lastModified matches the http header from the feed no results are fetched
     * @param  bool    $fullTextEnabled   if true tells the fetcher to enhance the articles by fetching more content
     * @param  string  $basicAuthUser     if given, basic auth is set for this feed
     * @param  string  $basicAuthPassword if given, basic auth is set for this feed. Ignored if user is empty
     *
     * @throws FetcherException if simple pie fails
     * @return array an array containing the new feed and its items, first
     * element being the Feed and second element being an array of Items
     */
    public function fetch(
        $url,
        $getFavicon = true,
        $lastModified = null,
        $etag = null,
        $fullTextEnabled = false,
        $basicAuthUser = null,
        $basicAuthPassword = null
    ) {
        foreach ($this->fetchers as $fetcher) {
            if ($fetcher->canHandle($url)) {
                return $fetcher->fetch(
                    $url,
                    $getFavicon,
                    $lastModified,
                    $etag,
                    $fullTextEnabled,
                    $basicAuthUser,
                    $basicAuthPassword
                );
            }
        }

        return [null, []];
    }
}