<?php
/**
 * Created by 上海互教教育科技有限公司.
 * User: 刘红伟
 * QQ  : 454303753
 * Date: 2017/7/26 0026
 * Time: 上午 11:01
 */
class SClassExamPrinter extends MyActiveRecord{

    public static function model($className = __CLASS__){
        return parent::model($className);
    }

    public function tableName(){
        return 'class_exam_printer';
    }

    public function getExamTime($examId){
        $sql = "select add_time from ".$this->tableName()." where exam_id = {$examId} and type = 0";
        return $this->getCommandBuilder()->createSqlCommand($sql)->queryScalar();
    }

    /**
     * 获取上一次考试id
     * @param $examId
     * @return bool|CDbDataReader|mixed|string
     */
    public function getPreExamId($examId,$subjectId,$classId){
        $examDate = $this->getExamTime($examId);
        if(in_array($subjectId, Yii::app()->params['mathSubjectId']))
        {
            $subjectCondition = ' e.subject_id in ('.implode(',',Yii::app()->params['mathSubjectId']).')';
        }else
        {
            $subjectCondition = ' e.subject_id = '.$subjectId;
        }

        $sql = "select cep.exam_id,e.exam_group_id from class_exam_printer as cep left join exam as e on e.exam_id = cep.exam_id where {$subjectCondition} and cep.add_time < {$examDate} and e.class_id = {$classId} and cep.type = 0 and e.status = 1 order by add_time desc";
        return $this->getCommandBuilder()->createSqlCommand($sql)->queryRow();
    }

    /**
     * 获取上一次考试id
     * @param $examId
     * @return bool|CDbDataReader|mixed|string
     */
    public function getTirdExamIds($examId,$subjectId,$classId){
        $examDate = $this->getExamTime($examId);


        $sql = "select cep.exam_id,cep.add_time from class_exam_printer as cep left join exam as e on e.exam_id = cep.exam_id where e.subject_id = {$subjectId} and cep.add_time <= {$examDate} and e.class_id = {$classId} and cep.type = 0 and e.status = 1 order by add_time desc limit 3";
        return $this->getCommandBuilder()->createSqlCommand($sql)->queryAll();
    }


    /**
     * （1）、如果这学校从来生成过数学个性化学习宝，他们依然会有标注任务，这种学校不能带有New标签。
    （2）、我们对于学校新使用定义的的情况1，该学校下，数学个性化学习宝（含试用和正式使用）的最早生成日期，与该份试卷的考试日期，差距在一个月内，即为学校新使用。
    3）、我们对于学校新使用定义的情况2，该学校下，最近一次数学个性化学习宝的使用时间，与该份试卷的考试时间，间隔超过了3个月，我们认为该学校是长期未使用个性化学习宝，现在又用了，我们需要重点维护，也视为学校新使用。
    （4）、只要达到了上述的情况1或情况2，即显示new标签。
     * @return array|CDbDataReader
     */
    public function getNewLabel($examTime)
    {
        $isNewLabel = false;
        $month_time = 30 * 24 * 3600;
        $time = time();

        $sql = "select add_time from class_exam_printer  where type = 2 order by add_time asc";
        $earliestTime =  $this->getCommandBuilder()->createSqlCommand($sql)->queryScalar();

        if ($time - $earliestTime <= $month_time) {
            $isNewLabel = true;
        }

        if (!$isNewLabel) {
            $sql = "select add_time from class_exam_printer  where type = 2 order by add_time desc";
            $nearestTime =  $this->getCommandBuilder()->createSqlCommand($sql)->queryScalar();

            if ($nearestTime - $examTime > $month_time * 3) {
                $isNewLabel = true;
            }
        }

        return $isNewLabel;
    }
}