RiderEvaluateServiceImpl.java
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package com.diligrp.rider.service.impl;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.diligrp.rider.common.exception.BizException;
import com.diligrp.rider.entity.Orders;
import com.diligrp.rider.entity.RiderEvaluate;
import com.diligrp.rider.entity.Rider;
import com.diligrp.rider.mapper.OrdersMapper;
import com.diligrp.rider.mapper.RiderEvaluateMapper;
import com.diligrp.rider.mapper.RiderMapper;
import com.diligrp.rider.service.RiderEvaluateService;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.time.YearMonth;
import java.time.ZoneId;
import java.util.List;
@Service
@RequiredArgsConstructor
public class RiderEvaluateServiceImpl implements RiderEvaluateService {
private final RiderEvaluateMapper evaluateMapper;
private final OrdersMapper ordersMapper;
private final RiderMapper riderMapper;
private static final int PAGE_SIZE = 20;
@Override
@Transactional
public void evaluate(Long uid, Long orderId, int star, String content) {
if (star < 1 || star > 5) throw new BizException("请选择1-5星评分");
Orders order = ordersMapper.selectById(orderId);
if (order == null) throw new BizException("订单不存在");
if (!uid.equals(order.getUid())) throw new BizException("订单信息错误");
if (order.getStatus() != 6) throw new BizException("订单未完成，无法评价");
// 检查是否已评价
Long exists = evaluateMapper.selectCount(new LambdaQueryWrapper<RiderEvaluate>()
.eq(RiderEvaluate::getUid, uid)
.eq(RiderEvaluate::getOid, orderId));
if (exists > 0) throw new BizException("订单已评价，无法再次评价");
// 写评价
RiderEvaluate eval = new RiderEvaluate();
eval.setUid(uid);
eval.setOid(orderId);
eval.setRid(order.getRiderId());
eval.setContent(content);
eval.setStar(star);
eval.setCityId(order.getCityId());
eval.setAddTime(System.currentTimeMillis() / 1000);
evaluateMapper.insert(eval);
// 更新骑手星级（累加平均分）
Rider rider = riderMapper.selectById(order.getRiderId());
if (rider != null) {
// 简单累加到 extra 统计，实际可扩展 star_total/star_count 字段
// 此处直接用 SQL 累加到骑手备注字段，生产建议加 star_total/count 字段
riderMapper.update(null, new LambdaUpdateWrapper<Rider>()
.eq(Rider::getId, order.getRiderId())
.setSql("star_total = IFNULL(star_total,0) + " + star
+ ", star_count = IFNULL(star_count,0) + 1"));
}
}
@Override
public List<RiderEvaluate> getRiderEvaluates(Long riderId, Integer type, int page) {
LambdaQueryWrapper<RiderEvaluate> wrapper = new LambdaQueryWrapper<RiderEvaluate>()
.eq(RiderEvaluate::getRid, riderId)
.orderByDesc(RiderEvaluate::getId);
if (type == 1) wrapper.ge(RiderEvaluate::getStar, 4); // 好评
if (type == 2) wrapper.gt(RiderEvaluate::getStar, 2).lt(RiderEvaluate::getStar, 4); // 中评
if (type == 3) wrapper.le(RiderEvaluate::getStar, 2); // 差评
int offset = (page - 1) * PAGE_SIZE;
wrapper.last("LIMIT " + offset + "," + PAGE_SIZE);
return evaluateMapper.selectList(wrapper);
}
@Override
public int getMonthGoodCount(Long riderId) {
YearMonth ym = YearMonth.now();
long start = ym.atDay(1).atStartOfDay(ZoneId.of("Asia/Shanghai")).toEpochSecond();
long end = ym.plusMonths(1).atDay(1).atStartOfDay(ZoneId.of("Asia/Shanghai")).toEpochSecond();
return evaluateMapper.selectCount(new LambdaQueryWrapper<RiderEvaluate>()
.eq(RiderEvaluate::getRid, riderId)
.ge(RiderEvaluate::getStar, 4)
.ge(RiderEvaluate::getAddTime, start)
.lt(RiderEvaluate::getAddTime, end)).intValue();
}
}