<?php

/**
 * @提醒service
 *
 * @author jinlong.panjl <jinlong.panjl@aliyun-inc.com>
 * @copyright 2003-2103 phpwind.com
 * @license http://www.phpwind.com
 * @version $Id$
 * @package wind
 */
class PwRemindService {
	
	/**
	 * 根据内容组装@提醒人
	 * 
	 * @param string $content
	 * @return array
	 */
	public function bulidRemind($content) {
		if (strpos($content, '@') === false) return array();
		$config = Wekit::C('register');
		$min = $config['security.username.min'];
		$max = $config['security.username.max'];
		
		$pattern = '/@([\x7f-\xff\dA-Za-z\.\_]+)/is';
		preg_match_all($pattern, $content, $matches);
		if (!$matches[1]) return array();
		$reminds = array();
		foreach ($matches[1] as $v) {
			$v = trim($v);
			if (!$v) continue;
			$reminds[] = $v;
		}
		
		return $reminds;
	}
	
	/**
	 * 增加@提醒人
	 * 
	 * @param string $content
	 * @return array
	 */
	public function addRemind($uid,$reminds) {
		$uid = intval($uid);
		if ($uid < 1 || !$reminds) return false;
		$remind = $this->_getRemindDs()->getByUid($uid);
		$remind = $remind['touid'] ? unserialize($remind['touid']) : array();
		$remind = array_unique(array_merge($reminds,$remind));
		$remind = array_slice($remind, 0, 10, true);
		$this->_getRemindDs()->replaceRemind($uid,serialize($remind));
	}
	
	/**
	 * 组装最新@人数据
	 * 
	 * @param array $users array('uid' => username)
	 * @return string uid,username,uid,username....
	 */
	public function buildUsers($uid,$reminds, $maxNum = 0) {
		$reminds = array_unique($reminds);
		if (!$reminds) return array();
		$users = $this->_getUserDs()->fetchUserByName($reminds);
		$_tmp = $array = array();
		foreach ($users as $v) {
			if ($uid == $v['uid']) continue; 
			$_tmp[$v['username']] = $v['uid'];
		}
		$i = 0;
		foreach ($reminds as $v) {
			if (!isset($_tmp[$v])) continue; 
			if ($maxNum && $i >= $maxNum) break; 
			$array[$_tmp[$v]] = $v;
			$i++;
		}
		return $array;
	}
	
	/**
	 * 格式化用户数组
	 * 
	 * @param array $users array('uid' => username)
	 * @return string uid,username,uid,username....
	 */
	public function formatReminds($users) {
		if (!$users) return false;
		$user = '';
		foreach ($users as $uid => $username) {
			$user .= $uid . ',' . $username . ',';
		}
		return rtrim($user,',');
	}
	
	/**
	 * @return PwRemind
	 */
	private function _getRemindDs() {
		return Wekit::load('remind.PwRemind');
	}
	
	/**
	 * PwUser
	 * 
	 * @return PwUser
	 */
	private function _getUserDs() {
		return Wekit::load('user.PwUser');
	}
}
?>