<?php
/**
 * Heihe 黑河项目通用类
 */
 
class Heihe
{
	
	private $db;//传入PDO对象
	
	//使用到的公共变量
	public $tbl_heiheproject = "heiheproject" ;		//黑河项目表
	public $tbl_heiheuser = "heiheuser";	//黑河用户表
	public $project_status;		//汇交项目计划状态
	
	function __construct($db)
	{
		$this->db = $db;
		
		$this->project_status = array(
			0 => "计划未提交",
			1 => "计划未审核",
			2 => "跟踪专家审核",
			3 => "跟踪专家通过",
			4 => "数据委员会通过"
		);
		
	}
	
	
	//获取汇交状态
	public function getStatus($code){
		
		$status = $this->project_status;
		
		if(isset($status[$code]))
		{
			return $status[$code];
		}

	}
	
	//改变状态
	public function ChangeStatus($p,$s){
		
		$sql = "UPDATE ".$this->tbl_heiheproject." SET status=? WHERE id=?";
		
		$sth = $this->db->prepare($sql);
		
		$rs = $sth->execute(array($s,$p));
		
		return $rs;
		
	}
	
	//专家激活
	public function expertActive($pid,$code)
	{
		try{
			$sql = "SELECT * FROM ".$this->tbl_heiheproject." WHERE id=$pid";
			$sth = $this->db->query($sql);
			$row = $sth->fetch();
			
			//没有邀请专家
			if(empty($row['expert_name']))
			{
				return 1;
			}
			
			$validations = $this->getArray($row['expert_validation']);
			$status = $this->getArray($row['expert_activated']);
			
			if(!in_array($code,$validations))
			{
				return 2;
			}
			
			$key = $this->getKey($validations,$code);
			
			if(!empty($status))
			{
				if(isset($status[$key]))
				{
					return 3;
				}
				
				$time = array($code,date("Y-m-d H:i:s",time()));
				
				$time = array($this->mkArray($time));
				
				$new_status = array_splice($status,$key,0,$time);
				
				$new_status = $this->mkArray($new_status);
				
				$sql = "UPDATE ".$this->tbl_heiheproject." SET expert_activated=?";
				$sth = $this->db->prepare($sql);
				if($sth->execute(array($new_status)))
				{
					return 200;
				}
			}else{
				
				$time = date("Y-m-d H:i:s",time());
				
				$new_status = "{{".$code.",".$time."}}";
				
				$sql = "UPDATE ".$this->tbl_heiheproject." SET expert_activated=?";
				$sth = $this->db->prepare($sql);
				if($sth->execute(array($new_status)))
				{
					return 200;
				}
			}

		}catch(Execaption $e){
			return 50;
		}

	}

	public function expertActiveError($level){
		
		$errors = array(
			1 => "该汇交计划还没有邀请专家",
			2 => "您没有被邀请，请联系数据中心进行核实",
			3 => "您的邀请已经激活",
			50 => "服务器错误，请刷新页面重试",
			200 => "在已存在的激活时间中插入了新数据",
			300 => "新激活时间写入"
		);
		
	}
	
	//从pgsql读取数组并拆分为php数组
	public function getArray($str){
		if(strlen($str)>3)
		{
			return explode(",",substr($str,1,-1));
		}else{
			return NULL;
		}
	}
	
	//将php数组组装成pgsql中的数组
	public function mkArray($array){
		if(!is_array($array))
		{
			return "{".$array."}";
		}
		if(count($array)==1)
		{
			$key = max(array_keys($array));
			return "{".$array[$key]."}";
		}
		if(count($array)>1)
		{
			return "{".join(",",$array)."}";
		}
	}
	
	//从数组中获得键名
	public function getKey($array,$needle)
	{
		foreach($array as $k=>$v)
		{
			if($v == $needle)
			{
				return $k;
			}
		}
	}

}