<?php
/**
 * Created by PhpStorm.
 * User: liujin834
 * Date: 15/1/1
 * Time: 下午8:04
 */
namespace Westdc\Review;

use Zend\ServiceManager\ServiceManager;
use Zend\ServiceManager\ServiceManagerAwareInterface;
use Westdc\EventModel\AbstractEventManager;
use Zend\Db\Sql\Select;

class Review extends AbstractEventManager implements ServiceManagerAwareInterface{

    protected $serviceManager;

    public $opt,$orderSql = "",$limitSql = "",$sortSql = "";

    const REVIEW_STATUS_CANCELED = -1;          //取消评审
    const REVIEW_STATUS_DEFAULT = 0;            //初始状态
    const REVIEW_STATUS_ACCEPT = 1;             //接收元数据，进入评审状态
    const REVIEW_STATUS_EXPERT_INVITED = 2;     //开始邀请专家
    const REVIEW_STATUS_EXPERT_ACCEPT = 3;      //专家接受邀请
    const REVIEW_STATUS_EXPERT_FEEDBACK = 4;    //专家有反馈
    const REVIEW_STATUS_PUBLISH = 5;            //已发布

    public function setServiceManager(ServiceManager $serviceManager)
    {
        $this->serviceManager = $serviceManager;

        $this->init();

        return $this;
    }

    private function init(){
        $dbService = $this->serviceManager->get('Db');
        $this->db = $dbService->getPdo();
        unset($dbService);

        $this->opt = new \stdClass;
    }

    /**
     * 处理sql中用到的排序，limit等语句
     */
    private function processOptions()
    {
        if(isset($this->opt->limit) && $this->opt->limit > 0)
            $this->limitSql = "LIMIT {$this->opt->limit}";

        if(isset($this->opt->order) && !empty($this->opt->order)) {
            $this->orderSql = "ORDER BY {$this->opt->order}";

            if (isset($this->opt->sortSql) && !empty($this->opt->sortSql))
                $this->sortSql = "{$this->opt->sort}";
            else
                $this->sortSql = "DESC";
        }
    }

    /**
     * 获得最新的数据
     * @return mixed
     */
    public function getLatest()
    {
        $this->processOptions();

        $sql = "select m.id,md.title,u.username,u.realname,m.status from mdstatus m
					right join metadata md on md.uuid=m.uuid
					left join users u on u.id=m.userid
					order by m.id desc
					{$this->limitSql}";
        $rs = $this->db->query($sql);
        return $rs->fetchAll();
    }//getLatest()

    /**
     * 获得管理员负责的评审
     * @param $userId
     * @return mixed
     */
    public function getAdminReview($userId)
    {
        $this->processOptions();

        $sql = "select m.id,md.title,u.username,u.realname,m.status from mdstatus m
				right join metadata md on md.uuid=m.uuid
				left join users u on u.id=m.userid
				where u.id='$userId'
				{$this->limitSql}";

        $rs = $this->db->query($sql);
        return $rs->fetchAll();
    } //getAdminReview

    /**
     * 投稿元数据
     * @return mixed
     */
    public function getDraft(){

        $this->processOptions();

        $searchJoin = "";
        if(isset($this->opt->keyword) && !empty($this->opt->keyword))
        {
            $searchJoin = " AND md.title LIKE '%{$this->opt->keyword}%'";
        }

        if(empty($this->orderSql))
        {
            $this->orderSql = "ORDER BY m.ts_created DESC";
        }

        $sql = "SELECT m.id,md.title,md.uuid,u.username,u.realname,m.status,m.ts_created,gn.id as gnid FROM mdstatus m
				RIGHT JOIN metadata md ON md.uuid=m.uuid
				LEFT JOIN users u ON u.id=m.userid
				LEFT JOIN geonetworkmetadata gn ON m.uuid=gn.uuid
				WHERE m.status=".self::REVIEW_STATUS_DEFAULT." $searchJoin
				{$this->orderSql} {$this->sortSql}
				{$this->limitSql}";

        $rs = $this->db->query($sql);
        return $rs->fetchAll(\PDO::FETCH_ASSOC);
    }//getDraft()

    /**
     * 获取被取消评审的元数据
     * @return mixed
     */
    public function getCanceled()
    {
        $this->processOptions();

        $searchJoin = "";
        if(isset($this->opt->keyword) && !empty($this->opt->keyword))
        {
            $searchJoin = " AND md.title LIKE '%{$this->opt->keyword}%'";
        }

        if(empty($this->orderSql))
        {
            $this->orderSql = "ORDER BY m.ts_created DESC";
        }

        $sql = "SELECT m.id,md.title,md.uuid,m.status,m.ts_created FROM mdstatus m
				RIGHT JOIN metadata md ON md.uuid=m.uuid
				WHERE m.status=".self::REVIEW_STATUS_CANCELED." $searchJoin
				{$this->orderSql} {$this->sortSql}
				{$this->limitSql}";

        $rs = $this->db->query($sql);
        return $rs->fetchAll(\PDO::FETCH_ASSOC);
    }

    /**
     * 取消评审
     * @param $id
     * @return bool
     */
    public function cancel($id){
        if(!is_numeric($id) || $id<1)
            return false;

        $this->getEventManager()->trigger('review.canceled', $this, compact('id'));

        return $this->changeStatus($id,self::REVIEW_STATUS_CANCELED);
    }

    /**
     * 接收投稿的元数据
     * @param $id
     * @return bool
     */
    public function accept($id){

        if($this->getStatus($id) != self::REVIEW_STATUS_DEFAULT)
            return [
                '评审状态错误，有可能的错误是：',
                '此评审已被取消，请到<b>已取消评审的元数据</b>中将其重置',
                '此评审已经被接收',
                '此评审已经处于待分配责任编辑、邀请专家、等待专家评审、已通过评审的状态中'
            ];

        $status = $this->changeStatus($id,self::REVIEW_STATUS_ACCEPT);

        if(false === $status){
            return false;
        }

        $this->getEventManager()->trigger('review.accepted', $this, compact('id'));

        return true;

    }//accept($id)

    public function reset($id){

    }

    /**
     * 更改mdstatus中的status字段
     * @param $id
     * @param $status
     * @return bool
     */
    function changeStatus($id,$status){
        $statusValues = array(
            self::REVIEW_STATUS_CANCELED,       //取消评审
            self::REVIEW_STATUS_DEFAULT,	    //初始状态
            self::REVIEW_STATUS_ACCEPT,	        //接受元数据评审，进入评审阶段
            self::REVIEW_STATUS_EXPERT_INVITED,	//开始邀请专家，送审阶段
            self::REVIEW_STATUS_EXPERT_ACCEPT,	//专家接受邀请，在审阶段
            self::REVIEW_STATUS_EXPERT_FEEDBACK,//专家反馈，在审
            self::REVIEW_STATUS_PUBLISH,	    //评审结束，发布
            6,7
        );
        if(empty($id) || !isset($status) || !in_array($status,$statusValues))
        {
            return false;
        }
        else
        {
            if($status==1)
            {$sql = "update mdstatus set status='$status',ts_accepted='now()' where id in ($id)";	}
            else if($status==5)
            {$sql = "update mdstatus set status='$status',ts_finished='now()' where id in ($id)";}
            else
            {$sql = "update mdstatus set status='$status' where id in ($id)";}
            try{
                if($this->db->exec($sql)>0)
                {
                    return true;
                }
            }
            catch(\Exception $e)
            {
                return false;
            }
        }
    }//changestatus 更改状态


    /**
     * 获取mdstatus表中的status字段
     * @param $id
     * @return mixed
     */
    public function getStatus($id)
    {
        $sql = "SELECT status FROM mdstatus WHERE id=$id";
        $rs = $this->db->query($sql);

        return $rs->fetchColumn(0);
    }


}