package com.ycl.jxkg.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ycl.jxkg.domain.other.KeyValue;
import com.ycl.jxkg.domain.Question;
import com.ycl.jxkg.domain.TextContent;
import com.ycl.jxkg.domain.enums.QuestionStatusEnum;
import com.ycl.jxkg.domain.enums.QuestionTypeEnum;
import com.ycl.jxkg.domain.question.QuestionItemObject;
import com.ycl.jxkg.domain.question.QuestionObject;
import com.ycl.jxkg.mapper.QuestionMapper;
import com.ycl.jxkg.service.QuestionService;
import com.ycl.jxkg.service.SubjectService;
import com.ycl.jxkg.service.TextContentService;
import com.ycl.jxkg.utils.DateTimeUtil;
import com.ycl.jxkg.utils.JsonUtil;
import com.ycl.jxkg.utils.ExamUtil;
import com.ycl.jxkg.vo.admin.question.QuestionEditItemVO;
import com.ycl.jxkg.vo.admin.question.QuestionEditRequestVO;
import com.ycl.jxkg.vo.admin.question.QuestionPageRequestVO;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;

@Service
@RequiredArgsConstructor
public class QuestionServiceImpl extends ServiceImpl<QuestionMapper, Question> implements QuestionService {

    private final QuestionMapper questionMapper;
    private final TextContentService textContentService;
    private final SubjectService subjectService;


    @Override
    public PageInfo<Question> page(QuestionPageRequestVO requestVM) {
        return PageHelper.startPage(requestVM.getPageIndex(), requestVM.getPageSize(), "id desc").doSelectPageInfo(() ->
                questionMapper.page(requestVM)
        );
    }


    @Override
    @Transactional
    public Question insertFullQuestion(QuestionEditRequestVO model, Integer userId) {
        Date now = new Date();
        Integer gradeLevel = subjectService.levelBySubjectId(model.getSubjectId());

        //题干、解析、选项等 插入
        TextContent infoTextContent = new TextContent();
        infoTextContent.setCreateTime(now);
        setQuestionInfoFromVM(infoTextContent, model);
        textContentService.save(infoTextContent);

        Question question = new Question();
        question.setSubjectId(model.getSubjectId());
        question.setGradeLevel(gradeLevel);
        question.setCreateTime(now);
        question.setQuestionType(model.getQuestionType());
        question.setStatus(QuestionStatusEnum.OK.getCode());
        question.setCorrectFromVM(model.getCorrect(), model.getCorrectArray());
        question.setScore(ExamUtil.scoreFromVM(model.getScore()));
        question.setDifficult(model.getDifficult());
        question.setInfoTextContentId(infoTextContent.getId());
        question.setCreateUser(userId);
        question.setDeleted(false);
        questionMapper.insert(question);
        return question;
    }

    @Override
    @Transactional
    public Question updateFullQuestion(QuestionEditRequestVO model) {
        Integer gradeLevel = subjectService.levelBySubjectId(model.getSubjectId());
        Question question = questionMapper.selectById(model.getId());
        question.setSubjectId(model.getSubjectId());
        question.setGradeLevel(gradeLevel);
        question.setScore(ExamUtil.scoreFromVM(model.getScore()));
        question.setDifficult(model.getDifficult());
        question.setCorrectFromVM(model.getCorrect(), model.getCorrectArray());
        questionMapper.updateById(question);

        //题干、解析、选项等 更新
        TextContent infoTextContent = textContentService.getById(question.getInfoTextContentId());
        setQuestionInfoFromVM(infoTextContent, model);
        textContentService.updateById(infoTextContent);

        return question;
    }

    @Override
    public QuestionEditRequestVO getQuestionEditRequestVM(Integer questionId) {
        //题目映射
        Question question = questionMapper.selectById(questionId);
        return getQuestionEditRequestVM(question);
    }

    @Override
    public QuestionEditRequestVO getQuestionEditRequestVM(Question question) {
        //题目映射
        TextContent questionInfoTextContent = textContentService.getById(question.getInfoTextContentId());
        QuestionObject questionObject = JsonUtil.toJsonObject(questionInfoTextContent.getContent(), QuestionObject.class);
        QuestionEditRequestVO questionEditRequestVO = new QuestionEditRequestVO();
        BeanUtils.copyProperties(question, questionEditRequestVO);
        questionEditRequestVO.setTitle(questionObject.getTitleContent());

        //答案
        QuestionTypeEnum questionTypeEnum = QuestionTypeEnum.fromCode(question.getQuestionType());
        switch (questionTypeEnum) {
            case SingleChoice:
            case TrueFalse:
                questionEditRequestVO.setCorrect(question.getCorrect());
                break;
            case MultipleChoice:
                questionEditRequestVO.setCorrectArray(ExamUtil.contentToArray(question.getCorrect()));
                break;
            case GapFilling:
                List<String> correctContent = questionObject.getQuestionItemObjects().stream().map(d -> d.getContent()).collect(Collectors.toList());
                questionEditRequestVO.setCorrectArray(correctContent);
                break;
            case ShortAnswer:
                questionEditRequestVO.setCorrect(questionObject.getCorrect());
                break;
            default:
                break;
        }
        questionEditRequestVO.setScore(ExamUtil.scoreToVM(question.getScore()));
        questionEditRequestVO.setAnalyze(questionObject.getAnalyze());


        //题目项映射
        List<QuestionEditItemVO> editItems = questionObject.getQuestionItemObjects().stream().map(o -> {
            QuestionEditItemVO questionEditItemVO = new QuestionEditItemVO();
            BeanUtils.copyProperties(o, questionEditItemVO);
            if (o.getScore() != null) {
                questionEditItemVO.setScore(ExamUtil.scoreToVM(o.getScore()));
            }
            return questionEditItemVO;
        }).collect(Collectors.toList());
        questionEditRequestVO.setItems(editItems);
        return questionEditRequestVO;
    }

    public void setQuestionInfoFromVM(TextContent infoTextContent, QuestionEditRequestVO model) {
        List<QuestionItemObject> itemObjects = model.getItems().stream().map(i ->
                {
                    QuestionItemObject item = new QuestionItemObject();
                    item.setPrefix(i.getPrefix());
                    item.setContent(i.getContent());
                    item.setItemUuid(i.getItemUuid());
                    item.setScore(ExamUtil.scoreFromVM(i.getScore()));
                    return item;
                }
        ).collect(Collectors.toList());
        QuestionObject questionObject = new QuestionObject();
        questionObject.setQuestionItemObjects(itemObjects);
        questionObject.setAnalyze(model.getAnalyze());
        questionObject.setTitleContent(model.getTitle());
        questionObject.setCorrect(model.getCorrect());
        infoTextContent.setContent(JsonUtil.toJsonStr(questionObject));
    }

    @Override
    public Integer selectAllCount() {
        return questionMapper.selectAllCount();
    }

    @Override
    public List<Integer> selectMothCount() {
        Date startTime = DateTimeUtil.getMonthStartDay();
        Date endTime = DateTimeUtil.getMonthEndDay();
        List<String> mothStartToNowFormat = DateTimeUtil.MothStartToNowFormat();
        List<KeyValue> mouthCount = questionMapper.selectCountByDate(startTime, endTime);
        return mothStartToNowFormat.stream().map(md -> {
            KeyValue keyValue = mouthCount.stream().filter(kv -> kv.getName().equals(md)).findAny().orElse(null);
            return null == keyValue ? 0 : keyValue.getValue();
        }).collect(Collectors.toList());
    }


}