<?php

/**
* ownCloud - News
*
* @author Alessandro Cosentino
* @author Bernhard Posselt
* @copyright 2012 Alessandro Cosentino cosenal@gmail.com
* @copyright 2012 Bernhard Posselt nukeawhale@gmail.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
*
*/

namespace OCA\News\Utility;

use \OCA\AppFramework\Utility\TimeFactory;

use \OCA\News\Db\Item;


class ImportParser {

	private $timeFactory;
	private $purifier;

	public function __construct(TimeFactory $timeFactory, $purifier) {
		$this->timeFactory = $timeFactory;
		$this->purifier = $purifier;
	}

	public function parse($json){
		$items = array();

		if(array_key_exists('items', $json)) {
			$jsonItems = $json['items'];

			// reverse because highest entry is the newest one and we cant rely
			// on a set pubdate
			for($i=count($jsonItems)-1; $i>=0; $i--) {
				$entry = $jsonItems[$i];

				// we require title, guid and url
				if(!array_key_exists('title', $entry)
					|| !array_key_exists('id', $entry)
					|| !array_key_exists('alternate', $entry)
					|| !count($entry['alternate']) > 0
					|| !array_key_exists('href', $entry['alternate'][0])) {
					continue;
				}

				$item = new Item();
				
				$id = $entry['id'];
				$item->setGuid($id);
				$item->setGuidHash(md5($id));
				$item->setTitle($entry['title']);
				$item->setUrl($entry['alternate'][0]['href']);
				$item->setStatus(0);
				$item->setStarred();
				$item->setUnread();

				if(array_key_exists('published', $entry)) {
					$item->setPubDate($entry['published']);	
				} else {
					$item->setPubDate($this->timeFactory->getTime());
				}
				
				if(array_key_exists('summary', $entry)) {
					$item->setBody($this->purifier->purify(
						$entry['summary']['content']));

				} elseif(array_key_exists('content', $entry)) {
					$item->setBody($this->purifier->purify(
						$entry['content']['content']));
				}
				

				array_push($items, $item);
			}
		}

		return $items;
	}

}