package com.ruoyi.goods.service.impl.lottery;
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import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import com.ruoyi.goods.api.domain.LotteryEventQuestionsAnswers;
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import com.ruoyi.goods.api.domain.UserLotteryEventQuestionsAnswers;
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import com.ruoyi.goods.mapper.lottery.UserLotteryEventQuestionsAnswersMapper;
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import com.ruoyi.goods.service.lottery.ILotteryEventQuestionsAnswersService;
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import com.ruoyi.goods.service.lottery.IUserLotteryEventQuestionsAnswersService;
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import org.springframework.stereotype.Service;
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import javax.annotation.Resource;
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import java.math.BigDecimal;
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/**
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* @author zhibing.pu
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* @Date 2025/5/19 16:08
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*/
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@Service
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public class UserLotteryEventQuestionsAnswersServiceImpl extends ServiceImpl<UserLotteryEventQuestionsAnswersMapper, UserLotteryEventQuestionsAnswers> implements IUserLotteryEventQuestionsAnswersService {
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@Resource
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private ILotteryEventQuestionsAnswersService lotteryEventQuestionsAnswersService;
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/**
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* 获取答题正确率
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* @param userId
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* @param lotteryEventId
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* @return
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*/
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@Override
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public BigDecimal getCorrectAnswerRate(Long userId, String lotteryEventId) {
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int count = this.count(new QueryWrapper<UserLotteryEventQuestionsAnswers>().eq("user_id", userId).eq("lottery_event_id", lotteryEventId).eq("is_correct", 1));
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if (count > 0) {
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int count1 = lotteryEventQuestionsAnswersService.count(new QueryWrapper<LotteryEventQuestionsAnswers>().eq("lottery_event_id", lotteryEventId));
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return new BigDecimal(count).divide(new BigDecimal(count1), 2, BigDecimal.ROUND_HALF_UP);
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}
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return BigDecimal.ZERO;
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}
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}
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