<?php
defined('WEKIT_VERSION') || exit('Forbidden');
/**
 * 公告管理服务层
 *
 * @author MingXing Sun <mingxing.sun@aliyun-inc.com> 2012-01-21
 * @copyright 2003-2103 phpwind.com
 * @license http://www.windframework.com
 * @version $Id: PwAnnounceService.php 2552 2012-01-12 11:28:21Z mingxing.sun $
 * @package announce
 * @subpackage service.srv
 */

class PwAnnounceService {
	
	/**
	 * 批量格式化公告记录，添加用户名
	 *
	 * @param $announceInfo
	 * @return array
	 */
	public function formatAnnouncesUsername($announceInfos){
		if(!$announceInfos || !is_array($announceInfos))return array();
		$uids = $result = array();
		foreach($announceInfos as $value){
			$uids[] = $value['created_userid'];
		}
		$userInfos = $this->_getPwUser()->fetchUserByUid(array_unique($uids));
		foreach($announceInfos as $key => $value){
			$result[$key] = $value;
			$result[$key]['username'] = $userInfos[$value['created_userid']]['username'];
		}
		return $result;
	}
	
	/**
	 * 通过公告记录组装前台显示效果
	 * 帖子列表滚动展示标题用
	 *
	 * @return array
	 */
	public function getAnnounceForBbsScroll() {
		$announces = array();
		$announceInfos = $this->_getPwAnnounceDs()->getAnnounceByTimeOrderByVieworder(Pw::str2time(Pw::time2str(Pw::getTime(), 'Y-m-d')), 9, 0);
		foreach($announceInfos as $value){
			$announces[$value['aid']] = $value;
			$announces[$value['aid']]['start_date'] = Pw::time2str($value['start_date'], 'Y-m-d');
			if(Pw::strlen($value['subject']) > 18){
				$announces[$value['aid']]['subject'] = Pw::substrs($value['subject'], 18);
			}
			
		}
		return $announces;
	}
	/**
	 * 加载PwUser Ds 服务
	 *
	 * @return PwUser
	 */
	private function _getPwUser() {
		return Wekit::load('user.PwUser');
	}

	/**
	 * 获取公告接口 DS
	 *
	 * @return PwAnnounce
	 */
	protected function _getPwAnnounceDs() {
		return Wekit::load('announce.PwAnnounce');
	}
}