<?php

namespace addons\exam\controller;

use addons\exam\enum\CommonStatus;
use addons\exam\enum\ExamMode;
use addons\exam\library\ExamService;
use addons\exam\model\PaperModel;
use addons\exam\model\QuestionModel;
use addons\exam\model\UserModel;
use app\admin\model\exam\CateModel;
use app\admin\model\exam\GradeModel;
use think\Request;
use think\Db;


/**
 * 试卷接口
 */
class Paper extends Base
{
    protected $noNeedLogin = ['index'];
    protected $noNeedRight = ['*'];
    protected $user;

    /**
     * 查询出分类下的试卷
     */
    public function index()
    {
        $cate_id = input('cate_id/d', '0');
        $sort    = input('sort/s', '');
        $now     = time();

        $query = PaperModel::with([
            'cates' => function ($query) {
                $query->withField('id, name');
            }
        ])
            ->where('status', CommonStatus::NORMAL)
            ->where('is_only_room', 0)// 过滤仅考场使用的试卷
            ->whereRaw("((start_time = 0 and end_time = 0) or (start_time < {$now} and end_time > {$now}))");

        // 分类
        if ($cate_id) {
            $child_cate_ids = CateModel::getChildId($cate_id);
            array_push($child_cate_ids, $cate_id);
            $query->whereIn('cate_id', $child_cate_ids);
        }
        // 排序
        if ($sort && $sort != 'null') {
            $sort     = explode('|', $sort);
            $field    = $sort[0];
            $order_by = $sort[1];

            $field    = in_array($field, ['join_count']) ? $field : 'join_count';
            $order_by = $order_by == 'desc' ? 'desc' : 'asc';

            $query->order("{$field} $order_by");
        }

        $list = $query->paginate();
        $this->success('', ['list' => $list]);
    }

    /**
     * 试卷取题接口
     */
    public function getExamQuestion()
    {
        $paper_id = input('paper_id/d', 0);
        $room_id  = input('room_id/d', 0);

        // 验证是否需要绑定手机号
//        UserModel::isMustBindMobile($this->auth->getUser());

        // 预创建考场考试记录
//        $room_grade_id = ExamService::preRoomGrade($room_id, $this->auth->id);

        // 获取试卷题目
        $question_data = ExamService::getExamQuestion($paper_id, $room_id);

//        $this->success('', array_merge($question_data, ['room_grade_id' => $room_grade_id]));
        $this->success('', $question_data);
    }

    //开始考试接口
    public function startpaper(){
        $paper_id      = input('paper_id/d', 0);
        $user_id = $this->auth->id;

        //检查考试状态
        $check = Db::name('exam_grade')->where('user_id', $user_id)->where('status',1)->find();
        if($check){
            $this->success('您有其他考试正在进行中,即将继续考试',0);//直接给成功，数据返回0，前端跳转
        }

        //检查试卷
        $paper   = PaperModel::get($paper_id);

        switch (true) {
            case !$paper:
                $this->error('试卷信息不存在');
            case $paper->status != 'NORMAL':
                $this->error('试卷未开启');
            case $paper->mode == 'RANDOM' && !$paper->configs:
                $this->error('试卷未配置');
        }

        //时间限制
        if ($paper['start_time'] > 0 && $paper['start_time'] > time()) {
            $this->error('该试卷未开始，不能参与考试');
        }
        if ($paper['end_time'] > 0 && $paper['end_time'] < time()) {
            $this->error('该试卷已结束，不能参与考试');
        }

        //考试资格
        if(!in_array($user_id,explode(',',$paper['user_ids']))){
            $this->error('您不能参加该考试');
        }

        //次数限制
        if ($paper['limit_count'] > 0){

            $my_count = Db::name('exam_grade')->where('user_id', $user_id)->where('paper_id', $paper_id)->count();
            if($my_count >= $paper['limit_count']) {
                $this->error('该试卷您的考试次数已达上限');
            }
        }

        //记录为已开始，计划任务倒计时之后 自动结束
        $data = [
            'cate_id'  => $paper['cate_id'],
            'user_id'  => $this->auth->id,
            'paper_id' => $paper_id,
            'mode'     => $paper['mode'],

            'total_score' => $paper['total_score'],
            'total_count' => $paper['quantity'],

            'start_time' => time(),
            'createtime' => time(),
            'status' => 1,
            'limit_time' => $paper['limit_time'],  //限时N秒
            'last_time' => $paper['limit_time'] > 0 ? (time() + $paper['limit_time']) : 0, //最后限制交卷时间，时间戳
        ];

        $grade_id = Db::name('exam_grade')->insertGetId($data);
        $this->success('',$grade_id);

    }

    //进行中考试
    public function half_examing(){
        $user_id = $this->auth->id;

        $check = Db::name('exam_grade')->where('user_id', $user_id)->where('status',1)->find();
        if(empty($check)){
            $this->error('您没有进行中的考试');
        }
        $paper_id = $check['paper_id'];

        // 获取试卷题目
        $question_data = ExamService::getExamQuestion($paper_id, 0);
        $question_data['paper']['limit_time'] = $check['last_time'] - time();//倒计时秒数
        $this->success('', $question_data);
    }


    /**
     * 交卷
     */
    public function submit()
    {
        $request       = Request::instance();
        $user_id       = $this->auth->id;

        $paper_id      = $request->post('paper_id/d', 0);
        $questions     = $request->post('questions/a', []);
        $start_time    = $request->post('start_time/d', time());
        $room_id       = 0;
        $room_grade_id = $request->post('room_grade_id/d', 0);

        if (!$user_id || !$paper_id || !$questions) {
            $this->error('提交数据有误');
        }

        $check = Db::name('exam_grade')->where('status',1)->where('user_id',$user_id)->where('paper_id',$paper_id)->find();
        if(!$check){
            $this->error('交卷有误,或者您已交卷');
        }
        $grade_id = $check['id'];
        $start_time = $check['start_time'];


        // 考场考试
        if ($room_id) {
            if (!$room_grade_id) {
                $this->error('提交数据不合法');
            }

            // 考场考试
            $result = ExamService::roomExam($user_id, $room_id, $room_grade_id, $questions, $start_time, $paper, $room, $is_makeup, $room_grade_log);

            // 记录考场考试成绩
            $room_grade_log->allowField(true)->save(
                array_merge(
                    $result,
                    [
                        // 'cate_id'   => $paper['cate_id'],
                        'user_id'   => $user_id,
                        'paper_id'  => $paper_id,
                        'is_makeup' => $is_makeup,
                        'is_pre'    => 0, // 提交成绩后不再为预创建标记
                    ],
                    [
                        'exam_mode' => ExamMode::ROOM,
                    ]
                )
            );
        } else {
            $result = ExamService::paperExam($user_id, $paper_id, $questions, $start_time, $paper);

            // 记录考试成绩
            /*GradeModel::create(array_merge(
                $result,
                [
                    'cate_id'  => $paper['cate_id'],
                    'user_id'  => $user_id,
                    'paper_id' => $paper_id,
                ],
                [
                    // 'exam_mode' => ExamMode::PAPER,
                    'date' => date('Y-m-d'),
                ]), true);*/

            $update = array_merge(
                $result,
                [
                    'cate_id'  => $paper['cate_id'],
                    'updatetime' => time(),
                    'date' => date('Y-m-d'),

                    'status' => 2,
                    'finish_time' => time(),
                ]);
            unset($update['pass_score']);
            unset($update['start_time']);

            $rs = Db::name('exam_grade')->where('id',$grade_id)->update($update);
            if($rs === false){
                $this->error('交卷失败');
            }
        }

        $result['nickname'] = $this->auth->nickname;

        //删除本试卷分数最低的试卷
        $old_grade = Db::name('exam_grade')->where('user_id',$user_id)->where('paper_id',$paper_id)->where('id','NEQ',$grade_id)->find();
        if(!empty($old_grade)){
            if($old_grade['score'] <= $update['score']){
                $delete_id = $old_grade['id'];
            }else{
                $delete_id = $grade_id;
            }
            Db::name('exam_grade')->where('id',$delete_id)->delete();
        }
        //删除本试卷分数最低的试卷

        $this->success('',$result);
//        return json($result);
    }

    /*
     * 查看错题
     * Robin
     * @param $ids
     * */
    public function error_ids($ids)
    {
        $questions = QuestionModel::whereIn('id', ($ids))->select();
        $this->success('', $questions);
    }

}