<?php
/**
* Dataorder 数据申请相关
*/
class Dataorder
{
	public $db;	//PDO
	
	public $tbl_Metadata = "metadata";  //元数据数据表
	public $tbl_Metadata_temp = "metadata_temp"; //新元数据缓存表
	public $tbl_Dataorder = "dataorder";		//dataorder表
	public $tbl_Offlineapp = "offlineapp";		//offlineapp
	public $tbl_fav = "favorite";		//收藏表
	
	function __construct($db)
	{
		$this->db = $db;
	}
	
	public function fetchAllOfflineApp($statu=0,$q=""){
		
		$wheresql = array();
		
		if ($statu==4)
			$wheresql[] = " (o.ts_approved is null and o.pdflink is not null and d.status=4) ";
		elseif ($statu==-1)
			$wheresql[] = " (o.pdflink is not null and o.status=-1)";
		else 
			$wheresql[] = " (o.ts_approved is null and o.pdflink is not null and d.status in (3,4))";
		
		if(!empty($q))
		{
			$wheresql[] = " (o.username LIKE '%$q%' OR o.unit LIKE '%$q%' OR o.project LIKE '%$q%' OR o.address LIKE '%$q%') ";
		}
		
		if(count($wheresql)>0)
		{
			$wheresql = " WHERE ".join(" AND ",$wheresql);
		}else{
			$wheresql = "";
		}
		
		$sql = "select distinct(o.*),d.status as datastatus from ".$this->tbl_Offlineapp." o 
				  left join ".$this->tbl_Dataorder." d on o.id = d.offlineappid
				  $wheresql
				  order by o.ts_created desc";
		
		$rs = $this->db->query($sql);
		$rows = $rs->fetchAll();
		
		return $rows;
	}
	
	//收藏元数据
	public function fav($uid,$uuid)
	{
		if(!is_numeric($uid))
		{
			return false;
		}
		
		if(!preg_match("/^[0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12}$/",$uuid))
		{
			return false;
		}
		
		$sql = "SELECT * FROM ".$this->tbl_fav." WHERE uid=$uid AND uuid='$uuid'";
		$rs = $this->db->query($sql);
		$rows = $rs->fetchAll();
		if(count($rows)>0)
		{
			return "您已经收藏过此元数据";
		}
		
		$sql = "INSERT INTO ".$this->tbl_fav." (uid,uuid) VALUES ($uid,'$uuid')";
		if($this->db->exec($sql))
		{
			return true;
		}else{
			return false;
		}
	}
	
	//移除收藏
	public function favRemove($uid,$uuid){
		if(!is_numeric($uid))
		{
			return false;
		}
		
		if(!preg_match("/^[0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12}$/",$uuid))
		{
			return false;
		}
		
		$sql = "SELECT * FROM ".$this->tbl_fav." WHERE uid=$uid AND uuid='$uuid'";
		$rs = $this->db->query($sql);
		$rows = $rs->fetchAll();
		if(count($rows)<1)
		{
			return "参数错误";
		}
		
		$sql = "DELETE FROM ".$this->tbl_fav." WHERE uid=$uid AND uuid='$uuid'";
		if($this->db->exec($sql))
		{
			return true;
		}else{
			return false;
		}
	}

}