<?php
namespace Reference;

use \Helpers\View as view;
use \Helpers\dbh;
use \Reference\Listener\ReferenceListener;
use \Files\Files;

class Reference
{
	private $db;				//传入PDO对象.
	private $config;			//站点设置
	
	protected $events = NULL;
	public $table;
		
	function __construct($db = NULL,$mail = NULL)
	{
		if(empty($db))
		{
			$this->db = \Zend_Registry::get('db');
		}else{
			$this->db = $db;
		}
		
		$this->config = \Zend_Registry::get('config');
		
		$Listener = new ReferenceListener();
		@$this->events()->attachAggregate($Listener);
		
		$this->table = new \Helpers\Table();
	}
	
	public function events(\Zend_EventManager_EventCollection $events = NULL)
    {
        if ($events !== NULL) {
            $this->events = $events;
        } elseif ($this->events === NULL) {
            $this->events = new \Zend_EventManager_EventManager(__CLASS__);
        }
        return $this->events;
    }
	
	public function reference($id = 0)
	{
		$data = $this->getReferenceParam();
		
		$params = compact('data');
        $results = $this->events()->trigger('submit.checkParam', $this, $params);
		$cache_data = $results->bottom();
		
		if($cache_data !== true)
		{
			return $cache_data;
		}
		
        $results = $this->events()->trigger('submit.processData', $this, $params);
		$data = $results->bottom();
		
		unset($data['submit']);
		
		$dbh = new dbh();
		
		if(empty($id))
		{
			$id = $dbh->insert($this->table->reference,$data,true);
		}else{
			if(!$dbh->update($this->table->reference,$data," id=$id ",true))
			{
				return "修改失败!请重试";
			}
		}
		
		if(!empty($id) && is_numeric($id))
		{
			return true;
		}else{
			return "修改失败";
		}
	}
	
	//获得参数
	public function getReferenceParam(\Zend_Controller_Request_Abstract $request = NULL)
	{
		$request = new \Zend_Controller_Request_Http();
		$data = array(
			'reference'=>$request->getParam('reference'),
			'link'=>$request->getParam('link'),
			'publisher'=>$request->getParam('publisher'),
			'year' => $request->getParam('year'),
			'title' => $request->getParam('title'),
			'bibtex' => $request->getParam('bibtex'),
			'attid' => $request->getParam('attid')
		);
		return $data;
	}
	
	//上传文献PDF
	public function uploadReferencePdf($file)
	{
		$files = new Files();
		$file_info = $files->upload($file,'reference/',true);
		
		if(isset($file_info['error']) && !empty($file_info['error']))
		{
			return array("error" => $file_info['error']);
		}
		
		$file_data = array(
			'filename' => $file_info['file_url'],
			'filetype' => 'reference',
			'filedesc' => $file_info['file_mime'],
			'userid' => view::User('id'),
			'filesize' => $file_info['file_size'],
			'realname' => $file_info['realname']
		);
		
		$dbh = new dbh();
		
		$file_id = $dbh->insert($this->table->attachments,$file_data,true);
		
		$file_data['id'] = $file_id;
		
		return $file_data;
	}
	
	//删除文献文件
	public function deleteReferenceAttchment($attid)
	{
		if(empty($attid) || !is_numeric($attid))
		{
			return array("error"=>"参数错误");
		}
		
		$files = new Files();
		$status = $files->delete($attid);
		
		if($status !== true)
		{
			return array("error"=>$status);
		}else{
			return array("success"=>1);
		}
	}
	
	//所有文献
	public function fetchReferences()
	{
		$sql = "SELECT * FROM {$this->table->reference} ORDER BY id DESC";
		$rs = $this->db->query($sql);
		return $rs->fetchAll();
	}
	
	//获取专题数据的文献
	public function fetchThemeReferences($code)
	{
		$sql="select distinct ref.* from mdref r left join reference ref on r.refid=ref.id
			left join datasource ds on r.uuid=ds.uuid left join source s on s.id=ds.sourceid
			where s.code='$code'
			order by ref.year,ref.title";
		$rs=$this->db->query($sql);
		return $rs->fetchAll();
	}
	
	//单条文献的信息
	public function getOneReferenceData($id)
	{
		if(empty($id) || !is_numeric($id))
		{
			return false;
		}
		
		$sql = "SELECT * FROM {$this->table->reference} WHERE id=$id LIMIT 1";
		$rs = $this->db->query($sql);
		$row = $rs->fetch();
		if ($row['attid'])
		{
			$files = new Files();
			$attfile = $files->getOne($row['attid']);
		
			$row['file'] = $attfile;
		}
		return $row;
	}
	
	//获得reference类型的附件
	public function getReferenceFiles()
	{
		$sql = "SELECT att.*,ref.attid,ref.id as refid FROM {$this->table->attachments} att 
				LEFT JOIN {$this->table->reference} ref ON att.id=ref.attid
				WHERE att.filetype='reference'";
		$rs = $this->db->query($sql);
		$rows = $rs->fetchAll();
		return $rows;
	}

}