package cc.mrbird.febs.ai.service.impl;

import cc.mrbird.febs.ai.entity.AiMemberAnswerItem;
import cc.mrbird.febs.ai.entity.AiProductQuestionItem;
import cc.mrbird.febs.ai.mapper.AiMemberAnswerItemMapper;
import cc.mrbird.febs.ai.req.memberAnswer.ApiMemberAnswerPreviousDto;
import cc.mrbird.febs.ai.req.memberAnswer.ApiMemberAnswerWrongPageDto;
import cc.mrbird.febs.ai.res.memberAnswer.ApiMemberAnswerPreviousItemVo;
import cc.mrbird.febs.ai.res.memberAnswer.ApiMemberAnswerPreviousVo;
import cc.mrbird.febs.ai.res.memberAnswer.ApiMemberAnswerWrongVo;
import cc.mrbird.febs.ai.res.product.ApiProductVo;
import cc.mrbird.febs.ai.service.AiMemberAnswerItemService;
import cc.mrbird.febs.ai.service.AiProductQuestionItemService;
import cc.mrbird.febs.common.entity.FebsResponse;
import cn.hutool.core.collection.CollUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

/**
 * AI用户答题记录子表 Service实现类
 *
 * @author yourname
 * @date 2025-07-29
 */
@Slf4j
@Service
@RequiredArgsConstructor
public class AiMemberAnswerItemServiceImpl extends ServiceImpl<AiMemberAnswerItemMapper, AiMemberAnswerItem> implements AiMemberAnswerItemService {

    private final AiMemberAnswerItemMapper aiMemberAnswerItemMapper;
    private final AiProductQuestionItemService aiProductQuestionItemService;

    @Override
    public Page<ApiMemberAnswerPreviousVo> getPageListByQuery(Page<ApiMemberAnswerPreviousVo> page, ApiMemberAnswerPreviousDto dto) {
        return aiMemberAnswerItemMapper.selectPageListByQuery(page, dto);
    }

    @Override
    public FebsResponse wrongPage(ApiMemberAnswerWrongPageDto dto) {
        // 创建分页对象，传入当前页和每页大小
        Page<ApiMemberAnswerWrongVo> page = new Page<>(dto.getPageNow(), dto.getPageSize());
        Page<ApiMemberAnswerWrongVo> pageListByQuery = aiMemberAnswerItemMapper.getWrongPageListByQuery(page, dto);
        List<ApiMemberAnswerWrongVo> records = pageListByQuery.getRecords();
        if (CollUtil.isNotEmpty(records)){
            Set<String> collect = records.stream().map(ApiMemberAnswerWrongVo::getProductQuestionId).collect(Collectors.toSet());

            LambdaQueryWrapper<AiProductQuestionItem> questionItemQuery = Wrappers.lambdaQuery(AiProductQuestionItem.class);
            questionItemQuery.in(AiProductQuestionItem::getProductQuestionId,collect);
            List<AiProductQuestionItem> listByQuery = aiProductQuestionItemService.getListByQuery(questionItemQuery);

            if (CollUtil.isNotEmpty(listByQuery)){
                //利用stream流，操作集合listByQuery，返回一个map对象，key为productQuestionId，value为List<AiProductQuestionItem>对象
                Map<String, List<AiProductQuestionItem>> questionItemMap =
                        listByQuery.stream().collect(Collectors.groupingBy(AiProductQuestionItem::getProductQuestionId));

                for (ApiMemberAnswerWrongVo record : records){
                    String productQuestionId = record.getProductQuestionId();

                    List<AiProductQuestionItem> questionItemList = questionItemMap.get(productQuestionId);
                    List<ApiMemberAnswerPreviousItemVo> answerList = new ArrayList<>();
                    if (CollUtil.isNotEmpty(questionItemList)){
                        for (AiProductQuestionItem questionItem : questionItemList){
                            ApiMemberAnswerPreviousItemVo itemVo = new ApiMemberAnswerPreviousItemVo();
                            itemVo.setId(questionItem.getId());
                            itemVo.setAnswer(questionItem.getAnswer());
                            itemVo.setAnswerAnalysis(questionItem.getAnswerAnalysis());
                            itemVo.setCorrectAnswer(questionItem.getCorrectAnswer());
                            answerList.add(itemVo);
                        }
                    }
                    record.setAnswerList(answerList);
                }
            }
        }
        return new FebsResponse().success().data(pageListByQuery);
    }
}