<?php
class Author extends Zend_Controller_Plugin_Abstract
{
	public $db;				//传入PDO对象.
	private $auth = NULL;		//Zend_Auth 对象
	
	//使用到的公共变量
	public $tbl_metadata = "metadata";	//元数据
	public $tbl_author = "mdauthor";	//数据作者表
	public $tbl_user = "users";
	
	function __construct($db)
	{
		$this->db = $db;
	}
	
	//检查前台用户对某条数据的权限
	function checkAuthor($uuid,$uid=0)
	{
		if(empty($uid))
		{
			$auth = Zend_Auth::getInstance();
			if($auth->hasIdentity())
			{
				$user = $auth->getIdentity();
				$uid = $user->id;
			}
		}
		if(!empty($uid))
		{
			$sql = "SELECT * FROM ".$this->tbl_author." WHERE uuid='$uuid' AND userid=$uid";
		}else{
			return false;
		}
		
		$rs = $this->db->query($sql);
		$row = $rs->fetch(PDO::FETCH_BOTH);
		if($row['status']>0)
		{
			return true;
		}else{
			return false;
		}
	}
	
	//获取某数据的所有作者
	function getAuthor($uuid,$field = "")
	{
		$sql = "SELECT md.title,u.email FROM ".$this->tbl_metadata." md
				LEFT JOIN ".$this->tbl_author." a ON md.uuid=a.uuid
				LEFT JOIN ".$this->tbl_user." u ON a.userid=u.id
				WHERE md.uuid='$uuid'";
		$sth = $this->db->query($sql);
		$rows = $sth->fetchAll();
		
		if(empty($field))
		{
			return $rows;
		}else{
			$datas = array();
			foreach($rows as $k=>$v)
			{
				$datas[] = $v[$field];
			}
			return $datas;
		}
	}
}

class Literature extends Author
{
	public function __construct($db)
    {
		$this->db = $db;
    }
	
	function getOne($id,$uuid = ""){
		$sql = "select m.uuid,r.reference,r.link,m.reftype,r.id as refid from reference r left join mdref m on r.id=m.refid where m.id=?";
		$sth = $this->db->prepare($sql);
		$sth->execute(array($id));
		$row = $sth->fetch();
		return $row;
	}
	
	function byuuid($uuid){
		include_once("helper/view.php");
		$uid = view::User('id');
		$sql = "SELECT md.title,md.uuid,r.id,r.reference,r.link,mr.place,mr.id as mrid FROM mdref mr
				LEFT JOIN metadata md ON md.uuid=mr.uuid
				LEFT JOIN mdauthor a ON md.uuid=a.uuid
				left join reference r on mr.refid=r.id
				WHERE md.title IS NOT NULL AND a.userid=? and mr.uuid=? AND a.status=1
				order by mr.place ASC,r.id DESC,md.ts_created desc
				";
		$sth = $this->db->prepare($sql);
		$sth->execute(array($uid,$uuid));
		$rows = $sth->fetchAll();
		return $rows;
	}
	
	function edit($mdrefid,$refid,$uuid,$content,$link,$reftype){
		include_once("helper/dbh.php");
		$dbh = new dbh($this->db);
		
		$data = array(
			'reference' => $content,
			'link'=>$link
		);
		
		$s = $dbh->update("reference",$data," id=$refid ",false);
		
		if($s)
		{
			$data = array(
				'reftype'=>$reftype
			);
			$d = $dbh->update("mdref",$data," id=$mdrefid ",false);
			if($d)
			{
				return true;
			}else{
				return false;
			}
		}else{
			return false;
		}
		
	}
	
	function order($id,$order){
		include_once("helper/dbh.php");
		$dbh = new dbh($this->db);
		
		$data = array(
			'place' => $order
		);
		
		$s = $dbh->update("mdref",$data," id=$id ",false);
		return $s;
	}
	
	function bydata($keywords=""){
		$auth = Zend_Auth::getInstance();
		if($auth->hasIdentity())
		{
			$user = $auth->getIdentity();
			$uid = $user->id;
		}else{
			return false;
		}
		
		$sql = "SELECT md.title,md.uuid,count(mr.id) as c FROM metadata md
					LEFT JOIN mdref mr ON md.uuid=mr.uuid
					LEFT JOIN mdauthor a ON md.uuid=a.uuid
					left join reference r on mr.refid=r.id
					WHERE md.title IS NOT NULL AND a.userid=$uid AND a.status=1";
		if(!empty($keywords))
		{
			include_once('SimpleSearch.php');
			$search=new SimpleSearch($keywords);
			$where=$search->sql_expr(array("md.title","md.description"));
			$sql.=' and '.$where;
		}
		$sql.=" group by md.uuid,md.title";

		$sth = $this->db->query($sql);
		$rows = $sth->fetchAll();
		
		return $rows;
	}
}