<?php
namespace Sookon\Article;

use Sookon\Helpers\View as view;
use Sookon\Helpers\Dbh as dbh;
use Sookon\Helpers\PDO;
use Sookon\Helpers\Table;

class Catelog
{
	private $db;				//传入PDO对象
	private $config;			//站点设置
	private $table;
	
	public $opt;
	
	protected $events = NULL;
		
	function __construct()
	{
		$this->db = new PDO;
		$this->table = new Table;
		
		$this->opt = new \stdClass();
		
		$this->opt->sort = "DESC";
		$this->opt->logic = "AND";
	}
	
	public function setEventManager(EventManagerInterface $events)
    {
        $events->setIdentifiers(array(
            __CLASS__,
            get_called_class(),
        ));
        $this->events = $events;
        return $this;
    }

    public function getEventManager()
    {
        if (NULL === $this->events) {
            $this->setEventManager(new EventManager());
        }
        return $this->events;
    }
	
	/*
	写入关系表
	不能外部调用
	*/
	private function ToCatalog($aid,$cid,$uuid='',$status=0){
		
		if(empty($aid) || !is_numeric($aid))
		{
			return false;
		}
		
		if(empty($cid) && empty($uuid))
		{
			return false;
		}
		
		$data = array(
			"aid" => $aid,
			"cid" => $cid,
			"status" => $status
		);
		
		if(!empty($uuid))
		{
			$data['uuid'] = $uuid;
		}
		
		$dbh = new dbh();
		if($dbh->insert($this->table->arc_catelog,$data))
		{
			return true;
		}else{
			return false;
		}
		
	}//ToCatalog()
	
	//写入关系表，外部只能调用此接口
	public function AddToCatalog($aid,$cid,$uuid='',$status=0)
	{
		if(!is_numeric($aid))
		{
			return false;
		}
		
		if(!is_array($cid) && !is_numeric($cid))
		{
			return false;
		}
		
		if(is_array($cid) && count($cid)<1)
		{
			return false;
		}
		
		//多个cid
		if(is_array($cid))
		{

			foreach($cid as $v)
			{
				//多个UUID
				if(is_array($uuid))
				{
					foreach ($uuid as $vv)
					{
						$this->ToCatalog($aid,$v,$vv,$status);
					}
				}
				
				//单个UUID
				else{
					$this->ToCatalog($aid,$v,$uuid,$status);
				}
				
			}
			return true;
			
		}
		
		//单个cid
		else{
			
			//多个UUID
			if(is_array($uuid))
			{
				foreach($uuid as $v)
				{
					$this->ToCatalog($aid,$cid,$v,$status);
				}
				return true;
			}
			
			//单个cid和uuid
			else{
				return $this->ToCatalog($aid,$cid,$uuid,$status);
			}
		}
	}//AddToCatalog
	
	//删除一个关系
	public function DeleteCatalog($id)
	{
		$sql = "DELETE FROM ".$this->table->arc_catelog." WHERE id=$id";
		@$this->db->exec($sql);
	}
	
	/*
	*	更改栏目	ChangeCatalog()
	*/
	public function ChangeCatalog($aid,$typeid,$uuid='',$status=0){
		
		try{
			$sql = "SELECT * FROM {$this->table->arc_catelog} WHERE aid=$aid";
			$sth = $this->db->query($sql);
			$rows = $sth->fetchAll();
			
			$types = array();
			
			foreach($rows as $k=>$v)
			{
				$types[] = $v['cid'];
				if(is_array($typeid))
				{
					if(!in_array($v['cid'],$typeid))
					{
						//删除一个栏目
						$this->DeleteCatalog($v['id']);
					}
				}else{
					$this->DeleteCatalog($v['id']);
				}
			}
			
			if(is_array($typeid))
			{
				foreach($typeid as $v)
				{
					if(!in_array($v,$types))
					{
						//添加一个栏目
						$this->ToCatalog($aid,$v,$uuid,$status);
					}
				}
			}else{
				$this->ToCatalog($aid,$typeid,$uuid,$status);
			}
			return true;
		}catch(Exception $e){
			return $e->getMessage();
		}

	}//ChangeCatalog
	
	//ChangeCatalogByUUID 根据UUID更改记录
	public function ChangeCatalogByUUID($aid,$typeid,$uuid,$status=0)
	{
		
		try{
			$sql = "SELECT * FROM {$this->table->arc_catelog} WHERE aid=$aid";
			$sth = $this->db->query($sql);
			$rows = $sth->fetchAll();
			
			$types = array();
			
			foreach($rows as $k=>$v)
			{
				$types[] = $v['uuid'];
				if(is_array($uuid))
				{
					if(!in_array($v['uuid'],$uuid))
					{
						//删除一个栏目
						$this->DeleteCatalog($v['id']);
					}
				}else{
					$this->DeleteCatalog($v['id']);
				}
			}
			
			if(is_array($uuid))
			{
				
				foreach($uuid as $v)
				{
					if(!in_array($v,$types))
					{
						//添加一个记录
						$this->ToCatalog($aid,$typeid,$v,$status);
					}
				}
			}else{
				$this->ToCatalog($aid,$typeid,$uuid,$status);
			}
			return true;
		}catch(Exception $e){
			return $e->getMessage();
		}
	}//ChangeCatalogByUUID
	
	
	//根据文章ID获得栏目
	public function getCategoryByAid($aid)
	{
		$sql = "SELECT
					 cate.* 
				FROM {$this->table->arc_catelog} log
				LEFT JOIN {$this->table->arc_category} cate ON log.cid=cate.id
				WHERE aid=$aid";
		$sth = $this->db->query($sql);
		$rows = $sth->fetchAll();
		return $rows;
	}
}