<?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;

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');

        /** @var \PDO $this->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);
    }

    /**
     * 获取需要分配编辑的评审
     * @param string $filter
     * @return mixed
     * filter参数帮助生成sql语句中的where、order、sort条件
     */
    public function getEditor($filter = ""){
        $wheresql = array();
        $ordersql = array();

        $wheresql[] = " m.status in (".self::REVIEW_STATUS_ACCEPT.",".self::REVIEW_STATUS_EXPERT_INVITED.",".self::REVIEW_STATUS_EXPERT_ACCEPT.",".self::REVIEW_STATUS_EXPERT_FEEDBACK.") ";
        $wheresql[] = " (m.userid IS NULL OR u.usertype != 'administrator') ";


        if(isset($filter['keyword']) && !empty($filter['keyword']))
        {
            $wheresql[] = " (md.title like '%".$filter['keyword']."%' OR u.username LIKE '%".$filter['keyword']."%' OR u.realname LIKE '%".$filter['keyword']."%') ";
        }

        if(count($wheresql)>0)
        {
            $wheresql = " WHERE ".join(" AND ",$wheresql);
        }else{
            $wheresql = "";
        }

        if(isset($filter['order']) && !empty($filter['order']))
        {
            $sort = "DESC";
            if(isset($filter['sort']) && !empty($filter['sort']) && in_array( strtolower($filter['sort']),array('desc','asc')))
            {
                $sort = $filter['sort'];
            }
            $ordersql[] = " {$filter['order']} $sort ";
        }

        if(count($ordersql)>0)
        {
            $ordersql = " ORDER BY ".join(',',$ordersql);
        }else{
            $ordersql = " ORDER BY m.ts_created desc ";
        }

        $sql = "select m.*,md.title,u.username,u.realname from mdstatus m
				right join metadata md on md.uuid=m.uuid
				left join users u on u.id=m.userid
				$wheresql
				$ordersql";
        $re = $this->db->query($sql);
        $rows = $re->fetchAll();

        return $rows;
    }//getEditor();

    /**
     * 待审核元数据
     * @return mixed
     */
    public function getAccept(){

        //调试sql时需要输入adapter环境
//        $dbService = $this->serviceManager->get('Db');
//        $adapter = $dbService->getZendDb();
//        $sql = new Sql\Sql($adapter);
//        $select = $sql->select();

        $select = new Sql\Select;

        $select->from(['m'=>'mdstatus']);
        $select->columns(array('*'));

        $select->join(
            ["md"=>"metadata"],
            "md.uuid=m.uuid",
            ["title"],
            $select::JOIN_RIGHT);

        $select->join(
            ["u"=>"users"],
            "m.userid=u.id",
            ["username","realname"],
            $select::JOIN_LEFT);

        $select->where(function(Sql\Where $where){
            $where->AND->in("m.status",[
                self::REVIEW_STATUS_ACCEPT,
                self::REVIEW_STATUS_EXPERT_INVITED,
                self::REVIEW_STATUS_EXPERT_ACCEPT,
                self::REVIEW_STATUS_EXPERT_FEEDBACK
            ]);
        },Sql\Predicate\PredicateSet::OP_AND);

        if(!empty($this->opt->keyword))
        {
            $keyword = $this->opt->keyword;

            $tools = $this->serviceManager->get('Tools');

            if($tools->isUUID($keyword)) {
                $select->where("md.uuid = '$keyword'");
            }else{
                $whereSql = function(Sql\Where $where) use ($keyword){
                    $where->AND->like('md.title',"%".$keyword."%");
                    $where->OR->like('md.title_en',"%".$keyword."%");
                };
                $select->where($whereSql,Sql\Predicate\PredicateSet::OP_AND);
            }

        }

        $select->order("md.id DESC");

//        echo $sql->getSqlStringForSqlObject($select); //带环境的sql
//        echo $select->getSqlString(); //普通级别的sql
//        exit();

        return $select;

    }//getAccept()

    /**
     * 获得我负责的元数据
     * @param string $filter
     * @return null
     */
    public function getAdminReviews($filter = "")
    {
        $authService = $this->serviceManager->get('Auth');
        $user_id = $authService->getIdentity('id');

        if(empty($user_id))
            return false;

        $wheresql = array();
        $ordersql = array();

        $wheresql[] = " m.status in (1,2,3,4) ";
        $wheresql[] = " u.id=$user_id ";

        if(isset($filter['keyword']) && !empty($filter['keyword']))
        {
            $wheresql[] = " md.title like '%".$filter['keyword']."%' ";
        }
        if(isset($filter['code']) && !empty($filter['code']))
        {
            $wheresql[] = " s.sourceid=".$filter['code']." ";
        }
        if(isset($filter['order']) && !empty($filter['order']))
        {
            $sort = "DESC";
            if(isset($filter['sort']) && !empty($filter['sort']) && in_array( strtolower($filter['sort']),array('desc','asc')))
            {
                $sort = $filter['sort'];
            }
            $ordersql[] = " {$filter['order']} $sort ";
        }

        if(count($wheresql)>0)
        {
            $wheresql = " WHERE ".join(" AND ",$wheresql);
        }else{
            $wheresql = "";
        }

        if(count($ordersql)>0)
        {
            $ordersql = " ORDER BY ".join(',',$ordersql);
        }else{
            $ordersql = " ORDER BY m.status desc,m.ts_accepted desc ";
        }

        $sql = "select m.id,g.id as gid, md.uuid,md.title,u.username,u.realname,m.status,md.id as mdid,md.author,m.ts_accepted,count(r.id) as reviews
				FROM mdstatus m
				right join metadata md on md.uuid=m.uuid
				left join geonetworkmetadata g on m.uuid=g.uuid
				left join users u on u.id=m.userid
				left join datasource s on s.uuid=md.uuid
				left join mdreview r ON r.uuid=md.uuid
				$wheresql
				GROUP BY m.id,g.id, md.uuid,md.title,u.username,u.realname,m.status,md.id,md.author,m.ts_accepted
				$ordersql";
        $re = $this->db->query($sql);
        $rows = $re->fetchAll();

        return $rows;

    }//getAdminReviews

    /**
     * 获取通过评审的元数据
     * @return Sql\Select
     */
    public function getReviewed(){

        $select = new Sql\Select;

        $select->from(['m'=>'mdstatus']);
        $select->columns(['id','status','ts_finished']);

        $select->join(["md"=>"metadata"], "md.uuid=m.uuid", ["title","uuid"], $select::JOIN_RIGHT);
        $select->join(["u"=>"users"], "u.id=m.userid", ["username","realname"], $select::JOIN_LEFT);

        $select->where("m.status = ".self::REVIEW_STATUS_PUBLISH);

        if(!empty($this->opt->keyword))
        {
            $keyword = $this->opt->keyword;

            $tools = $this->serviceManager->get('Tools');

            if($tools->isUUID($keyword)) {
                $select->where("md.uuid = '$keyword'");
            }else{
                $whereSql = function(Sql\Where $where) use ($keyword){
                    $where->AND->like('md.title',"%".$keyword."%");
                    $where->OR->like('md.title_en',"%".$keyword."%");
                };
                $select->where($whereSql,Sql\Predicate\PredicateSet::OP_AND);
            }

        }

        $select->order("m.ts_finished DESC");

        return $select;

    }//getReviewed();

    /**
     * 取消评审
     * @param $id
     * @return bool
     */
    public function cancel($id){

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

            return $this->changeStatus($id,self::REVIEW_STATUS_CANCELED);
        }elseif(is_array($id)){
            foreach($id as $item){
                $item = (int)$item;
                if($this->changeStatus($item,self::REVIEW_STATUS_CANCELED) === false)
                    return "ID:$item:取消失败";
            }
            $this->getEventManager()->trigger('review.canceled', $this, compact('id'));
            return true;
        }

        return false;
    }

    /**
     * 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)

    /**
     * 重置评审，将评审的状态设置为投稿元数据状态
     * @param $id
     * @return array|bool
     */
    public function reset($id){

        if(!is_array($id))
        {
            if($this->getStatus($id) != self::REVIEW_STATUS_CANCELED)
                return [
                    '此条评审的当前状态已经不属于被取消的评审，可能已经由其他管理人员重置',
                ];

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

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

        }else{
            $message = [];
            foreach($id as $item)
            {
                $item = (int)$item;
                if($this->getStatus($item) != self::REVIEW_STATUS_CANCELED){
                    $message[] = "ID:$item:此条评审的当前状态已经不属于被取消的评审，可能已经由其他管理人员重置";
                    continue;
                }

                $status = $this->changeStatus($item,self::REVIEW_STATUS_DEFAULT);

                if(false === $status)
                    $message[] = "ID:$item:重置失败";
            }

            if(count($message) > 0)
                return $message;
        }


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

        return true;
    }//reset()

    /**
     * 更改管理员
     * @param $id   array|int 可以输入数组
     * @param $user_id  int : 不能输入数组
     * @return bool|string
     */
    public function changeAdmin($id,$user_id)
    {
        if((!is_numeric($id) && !is_array($id)) || !is_numeric($user_id))
            return false;

        if(is_numeric($id)){
            return $this->db->exec("UPDATE mdstatus SET userid=$user_id WHERE id=$id");
        }

        if(is_array($id))
        {
            try{
                $this->db->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
                $this->db->beginTransaction();
                foreach($id as $item_id){
                    $item_id = $item_id+0;
                    $this->db->exec("UPDATE mdstatus SET userid=$user_id WHERE id=$item_id");
                }
                $this->db->commit();
                return true;

            }catch (\Exception $e){
                $this->db->rollBack();
                return $e->getMessage();
            }

        }
        return false;
    }//changeAdmin();

    /**
     * 重新评审
     * @param $id
     * @return bool|string
     */
    public function restart($id)
    {
        if((!is_numeric($id) && !is_array($id)))
            return false;

        if(is_numeric($id))
            return $this->changeStatus($id,self::REVIEW_STATUS_EXPERT_ACCEPT);

        if(is_array($id))
        {
            try{
                $this->db->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
                $this->db->beginTransaction();
                foreach($id as $item_id){
                    $item_id = $item_id+0;
                    $this->db->exec("UPDATE mdstatus SET status=".self::REVIEW_STATUS_EXPERT_ACCEPT." WHERE id=$item_id");
                }
                $this->db->commit();
                return true;
            }catch (\Exception $e){
                $this->db->rollBack();
                return $e->getMessage();
            }
        }
    }//restart()

    /**
     * 更改mdstatus中的status字段
     * @param $id
     * @param $status
     * @return bool
     */
    protected function changeStatus($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);
    }


}