<?php

namespace app\api\controller\app\exam;

use app\common\controller\Api;

/**
 * 练习记录
 */
class ExercisesLog extends Api
{

    protected $noNeedLogin = [];
    // 无需鉴权的接口,*表示全部
    protected $noNeedRight = ['*'];


    public function _initialize()
    {
        parent::_initialize();
        $this->exercisesModel = new \app\api\model\app\exam\Exercises();
        $this->logModel = new \app\api\model\app\exam\ExercisesLog;
        $this->exercisesLogAnswer = new \app\api\model\app\exam\ExercisesLogAnswer;
    }

    /**
     * 新建练习
     * @return void
     */
    public function buildLog(){
        $exercisesId = input('id');

        //获取出题配置
        $exercisesInfo = $this->exercisesModel->where([
            'id'=>$exercisesId,
            'status'=>1
        ])->find();

        if(!$exercisesInfo){
            $this->error('获取练习详情信息错误,请重试');
        }

        if(!\app\common\model\app\exam\ExercisesSubscribe::checkAuth($this->auth->id,$exercisesId)){
            $this->error('暂无该练习使用权限');
        }

        $logId = $this->logModel->buildLog($this->auth->id,$exercisesId);

        if(!$logId){
            $this->error('新建练习失败,请重试');
        }

        $this->success("获取成功",$logId);
    }


    /**
     * 获取做题记录详情
     * @return void
     */
    public function getLogDetail(){

        $logId = input('id');

        $logData = $this->logModel->where([
            'id'=>$logId,
            'user_id'=>$this->auth->id
        ])->find();

        if(!$logData){
            $this->error('获取练习详情错误,请重试');
        }

        $questionList = $this->logModel->getQuestionList($logId);

        if(!$questionList){
            $this->error('获取练习题目错误,请重试');
        }

        $logData->question_list = $this->logModel->getQuestionList($logId);

        if($logData['status'] == 1){
            //需要获取用户的答案
            $logData->user_answer = $this->exercisesLogAnswer->getUserAnswer($this->auth->id,0,$logId);
        }

        if($logData->question_list){
            foreach ($logData->question_list as $option){
                if($logData['status'] == 0){
                    // 未交卷：隐藏参考答案与解析，但保留填空题答案结构用于确定填空数量
                    $option->visible(['question','type','id','option','answer']);
                    // 填空题答案保留结构但清空具体内容
                    if($option['type'] == 'fillblank' && is_array($option['answer'])){
                        $option['answer'] = array_map(function(){ return []; }, $option['answer']);
                    }
                }else{
                    // 已交卷：返回参考答案、解析等供结果页展示
                    $option->visible(['id','type','degree','question','option','answer','analysis']);
                }
            }
        }

        //计算做题时间
        $logData->usetime = time() - $logData->createtime;
        
        $this->success("获取成功",$logData);
    }


    /**
     * 提交练习
     * @return void
     */
    public function submit(){
        $logId = input('id');
        $answerList = input('answer/a');


        if(!$answerList){
            $this->error('请至少填写一个问题的答案再提交');
        }


        $logData = $this->logModel->where([
            'id'=>$logId,
            'user_id'=>$this->auth->id
        ])->find();

        if(!$logData){
            $this->error('获取练习详情错误,请重试');
        }

        if($logData['status'] != 0){
            $this->error('已经提交过了');
        }

        //需要效验答案

        $questionList = $this->logModel->getQuestionList($logId);


        $result = $this->exercisesLogAnswer->checkAnswer($questionList,$answerList);
        
        if(!$result['answer_list']){
            $this->error('请至少填写一个问题的答案再提交');
        }


        if(!$this->exercisesLogAnswer->saveAnswer($this->auth->id,$logData['exercises_id'],$logId,$result['answer_list'])){
            $this->error('答案提交错误,请重试');
        }
        $this->logModel->where([
            'id'=>$logId
        ])->update([
            'status'=>1,
            'result_error_count'=>$result['error_count'],
            'result_true_count'=>$result['true_count'],
            'updatetime'=>time()
        ]);

        $this->success('交卷成功');
    }


    /**
     * 获取考试结果
     * @return void
     */
    public function getResult(){
        $logId = input('id');

        $logData = $this->logModel->where([
            'id'=>$logId,
            'user_id'=>$this->auth->id
        ])->find();

        if(!$logData){
            $this->error('获取练习详情错误,请重试');
        }

        $logData->prop = ceil($logData->result_true_count/$logData->question_count * 100);

        $this->success('获取成功',$logData);
    }


    /**
     * 获取练习记录
     * @return void
     */
    public function getLogList(){

        $limit = input('limit',10);
        $page = input('page',1);
        $exercisesId = input('id',1);
        $sort = input('sort','desc') == 'desc' ? 'desc' : 'asc';

        $where = [
            'user_id'=>$this->auth->id,
            'exercises_id'=>$exercisesId
        ];


        $rows = $this->logModel;
        $list = $rows
            ->where($where)
            ->limit($limit)->page($page)
            ->order('createtime',$sort)
            ->select();


        if(!empty($list)){
            foreach ($list as &$item){
                $item->prop = ceil($item->result_true_count / $item->question_count * 100);

                $item->visible(['prop','createtime','exercises_id','question_count','result_error_count','result_true_count','updatetime','id']);
            }
        }


        $this->success('获取成功', $list);
    }


    /**
     * 获取错误本
     * @return void
     */
    public function getErrorQuestion(){
        $exercisesId = input('id',1);
        $where = [
            'user_id'=>$this->auth->id,
            'exercises_id'=>$exercisesId,
            'error_book_show'=>1,
            'result'=>0
        ];

        $errorQuestionIds = $this->exercisesLogAnswer->where($where)->order('createtime','desc')->field('question_id')->group('question_id')->column('question_id');

        $logData = [
            'status' => 1
        ];

        $logData['question_list'] = $this->logModel->idsGetQestion($errorQuestionIds);

        $logData['user_answer'] = $this->exercisesLogAnswer->getUserAnswer($this->auth->id,$exercisesId);

        $this->success('获取成功', $logData);
    }


    /**
     * 删除错题
     * @return void
     */
    public function delErrorQuestion(){
        $exercisesId = input('id',1);
        $questionId = input('question_id',1);

        $where = [
            'user_id'=>$this->auth->id,
            'exercises_id'=>$exercisesId,
            'question_id'=>$questionId,
            'error_book_show'=>1,
            'result'=>0
        ];

        $answerData = $this->exercisesLogAnswer->where($where)->find();

        if(!$answerData){
            $this->error('该问题暂时无法变更,请重试');
        }
        $this->exercisesLogAnswer->where($where)->update([
            'error_book_show'=>2
        ]);
        $this->success('移除成功');
    }
}