DeliveryFeeServiceImpl.java
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package com.diligrp.rider.service.impl;
import com.diligrp.rider.common.exception.BizException;
import com.diligrp.rider.dto.DeliveryPricingConfigDTO;
import com.diligrp.rider.dto.DeliveryPricingRuleDTO;
import com.diligrp.rider.dto.DeliveryFeeCalcDTO;
import com.diligrp.rider.service.CityService;
import com.diligrp.rider.service.DeliveryFeeService;
import com.diligrp.rider.util.GeoUtil;
import com.diligrp.rider.vo.DeliveryFeeResultVO;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.time.Instant;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
/**
* 配送费计算引擎
* Helpsend.computed() + City.checkTime() + City.getLength()
*/
@Slf4j
@Service
@RequiredArgsConstructor
public class DeliveryFeeServiceImpl implements DeliveryFeeService {
private final CityService cityService;
@Override
public DeliveryFeeResultVO calcFee(DeliveryFeeCalcDTO dto) {
DeliveryPricingConfigDTO pricingConfig = cityService.getConfig(dto.getCityId());
return calcFeeByConfig(pricingConfig, dto);
}
@Override
public DeliveryFeeResultVO calcFeeByConfig(DeliveryPricingConfigDTO pricingConfig, DeliveryFeeCalcDTO dto) {
if (pricingConfig == null || pricingConfig.getType() == null) {
throw new BizException("当前城市未开通服务");
}
int orderType = dto.getOrderType();
if (!pricingConfig.getType().contains(orderType)) {
throw new BizException("当前城市未开通该类型服务");
}
// 获取该订单类型的配送费配置
DeliveryPricingRuleDTO typeConfig = getTypeConfig(pricingConfig, orderType);
if (typeConfig == null) {
throw new BizException("该服务类型未配置收费规则");
}
DeliveryFeeResultVO result = new DeliveryFeeResultVO();
result.setMoneyBasic(BigDecimal.ZERO);
result.setMoneyBasicTxt("");
result.setMoneyDistance(BigDecimal.ZERO);
result.setMoneyDistanceTxt("");
result.setMoneyWeight(BigDecimal.ZERO);
result.setMoneyWeightTxt("");
result.setMoneyPiece(BigDecimal.ZERO);
result.setMoneyPieceTxt("");
result.setMoneyTime(BigDecimal.ZERO);
result.setDistance(BigDecimal.ZERO);
result.setWeight(dto.getWeight());
result.setPieces(dto.getPieces());
result.setMinFee(nvl(typeConfig.getMinFee()));
result.setMinFeeApplied(0);
// --- fee_mode=1：固定费用 ---
if (typeConfig.getFeeMode() != null && typeConfig.getFeeMode() == 1) {
BigDecimal fix = typeConfig.getFixMoney() != null ? typeConfig.getFixMoney() : BigDecimal.ZERO;
result.setMoneyBasic(fix);
result.setTotalFee(applyMinFee(fix, typeConfig, result));
result.setEstimatedMinutes(calcEstimatedMinutes(pricingConfig, BigDecimal.ZERO));
return result;
}
// --- fee_mode=2：按距离/重量计费 ---
BigDecimal moneyBasic = BigDecimal.ZERO;
BigDecimal moneyDistance = BigDecimal.ZERO;
BigDecimal moneyWeight = BigDecimal.ZERO;
BigDecimal moneyPiece = BigDecimal.ZERO;
String moneyBasicTxt = "";
String moneyDistanceTxt = "";
String moneyWeightTxt = "";
String moneyPieceTxt = "";
BigDecimal distanceKm = BigDecimal.ZERO;
// 基础费
if (typeConfig.getBaseSwitch() != null && typeConfig.getBaseSwitch() == 1) {
moneyBasic = moneyBasic.add(nvl(typeConfig.getBaseFee()));
}
// 距离计费
if (typeConfig.getDistanceSwitch() != null && typeConfig.getDistanceSwitch() == 1) {
BigDecimal distanceBasicMoney = nvl(typeConfig.getDistanceBasicMoney());
moneyBasic = moneyBasic.add(distanceBasicMoney);
BigDecimal basicKm = nvl(typeConfig.getDistanceBasic());
moneyBasicTxt = "(" + basicKm.stripTrailingZeros().toPlainString() + "km)";
// 计算实际距离
distanceKm = calcDistance(typeConfig, dto);
// 超出距离费
if (distanceKm.compareTo(basicKm) > 0) {
BigDecimal moreKm = distanceKm.subtract(basicKm);
if (typeConfig.getDistanceSteps() != null && !typeConfig.getDistanceSteps().isEmpty()) {
moneyDistance = calcDistanceStepFee(basicKm, distanceKm, typeConfig.getDistanceSteps());
} else {
BigDecimal moreMoneyPerKm = nvl(typeConfig.getDistanceMoreMoney());
BigDecimal moreKmCeil = moreKm.setScale(0, RoundingMode.CEILING);
moneyDistance = moreKmCeil.multiply(moreMoneyPerKm).setScale(2, RoundingMode.HALF_UP);
}
moneyDistanceTxt = "(" + moreKm.setScale(1, RoundingMode.HALF_UP).toPlainString() + "km)";
}
}
// 重量计费
if (typeConfig.getWeightSwitch() != null && typeConfig.getWeightSwitch() == 1) {
BigDecimal weightBasicMoney = nvl(typeConfig.getWeightFirstFee().compareTo(BigDecimal.ZERO) > 0
? typeConfig.getWeightFirstFee() : typeConfig.getWeightBasicMoney());
moneyBasic = moneyBasic.add(weightBasicMoney);
BigDecimal weight = dto.getWeight() != null ? dto.getWeight() : BigDecimal.ZERO;
BigDecimal weightAdj = adjustValue(weight, typeConfig.getWeightType());
BigDecimal basicWeight = nvl(typeConfig.getWeightFirst().compareTo(BigDecimal.ZERO) > 0
? typeConfig.getWeightFirst() : typeConfig.getWeightBasic());
BigDecimal moreMoneyPerKg = nvl(typeConfig.getWeightUnitFee().compareTo(BigDecimal.ZERO) > 0
? typeConfig.getWeightUnitFee() : typeConfig.getWeightMoreMoney());
BigDecimal capFee = nvl(typeConfig.getWeightCapFee());
if (weightAdj.compareTo(basicWeight) > 0) {
BigDecimal moreWeight = weightAdj.subtract(basicWeight);
moneyWeight = moreWeight.multiply(moreMoneyPerKg).setScale(2, RoundingMode.HALF_UP);
if (capFee.compareTo(BigDecimal.ZERO) > 0) {
BigDecimal weightTotal = weightBasicMoney.add(moneyWeight);
if (weightTotal.compareTo(capFee) > 0) {
moneyWeight = capFee.subtract(weightBasicMoney).max(BigDecimal.ZERO).setScale(2, RoundingMode.HALF_UP);
}
}
moneyWeightTxt = "(" + moreWeight.toPlainString() + "kg)";
}
}
// 件数计费
if (typeConfig.getPieceSwitch() != null && typeConfig.getPieceSwitch() == 1
&& typeConfig.getPieceRules() != null && !typeConfig.getPieceRules().isEmpty()) {
int pieces = dto.getPieces() != null ? dto.getPieces() : 0;
List<DeliveryPricingRuleDTO.PieceRuleDTO> rules = new ArrayList<>(typeConfig.getPieceRules());
rules.sort(Comparator.comparing(rule -> rule.getListOrder() == null ? 0 : rule.getListOrder()));
for (DeliveryPricingRuleDTO.PieceRuleDTO rule : rules) {
int start = rule.getStartPiece() != null ? rule.getStartPiece() : 0;
int end = rule.getEndPiece() != null ? rule.getEndPiece() : Integer.MAX_VALUE;
if (pieces >= start && pieces <= end) {
moneyPiece = nvl(rule.getFee()).setScale(2, RoundingMode.HALF_UP);
moneyPieceTxt = "(" + start + "-" + end + "件)";
break;
}
}
}
// 时段附加费
long serviceTime = dto.getServiceTime() != null && dto.getServiceTime() > 0
? dto.getServiceTime() : System.currentTimeMillis() / 1000;
BigDecimal moneyTime = calcTimeMoney(typeConfig, serviceTime);
result.setMoneyBasic(moneyBasic);
result.setMoneyBasicTxt(moneyBasicTxt);
result.setMoneyDistance(moneyDistance);
result.setMoneyDistanceTxt(moneyDistanceTxt);
result.setMoneyWeight(moneyWeight);
result.setMoneyWeightTxt(moneyWeightTxt);
result.setMoneyPiece(moneyPiece);
result.setMoneyPieceTxt(moneyPieceTxt);
result.setMoneyTime(moneyTime);
result.setDistance(distanceKm);
BigDecimal total = moneyBasic.add(moneyDistance).add(moneyWeight).add(moneyPiece).add(moneyTime);
result.setTotalFee(applyMinFee(total, typeConfig, result));
result.setEstimatedMinutes(calcEstimatedMinutes(pricingConfig, distanceKm));
return result;
}
@Override
public boolean isServiceEnabled(Long cityId, int orderType) {
DeliveryPricingConfigDTO config = cityService.getConfig(cityId);
return config != null && config.getType() != null && config.getType().contains(orderType);
}
// ---- 私有方法 ----
/**
* 计算实际距离（km）， getDistance() + distance_type取整
*/
private BigDecimal calcDistance(DeliveryPricingRuleDTO typeConfig, DeliveryFeeCalcDTO dto) {
double disKm;
if (typeConfig.getDistanceMode() != null && typeConfig.getDistanceMode() == 2) {
// 直接使用传入距离（米转km）
disKm = 0; // 传入距离模式下 dto 中应有 distance 字段，此处简化为0
} else {
// 经纬度计算
try {
disKm = GeoUtil.calcDistanceKm(
Double.parseDouble(dto.getStartLat()),
Double.parseDouble(dto.getStartLng()),
Double.parseDouble(dto.getEndLat()),
Double.parseDouble(dto.getEndLng()));
} catch (Exception e) {
throw new BizException("地点经纬度信息错误");
}
}
return adjustValue(BigDecimal.valueOf(disKm), typeConfig.getDistanceType());
}
/**
* 根据取整方式调整数值
* distanceType: 1=四舍五入(保留1位) 2=向上取整 3=向下取整
*/
private BigDecimal adjustValue(BigDecimal value, Integer type) {
if (type == null || type == 1) {
return value.setScale(1, RoundingMode.HALF_UP);
} else if (type == 2) {
return value.setScale(0, RoundingMode.CEILING).setScale(1);
} else {
return value.setScale(0, RoundingMode.FLOOR).setScale(1);
}
}
/**
* 计算时段附加费
* City.checkTime()
*/
private BigDecimal calcTimeMoney(DeliveryPricingRuleDTO typeConfig, long serviceTime) {
if (typeConfig.getTimes() == null || typeConfig.getTimes().isEmpty()) {
return BigDecimal.ZERO;
}
ZonedDateTime zdt = Instant.ofEpochSecond(serviceTime).atZone(ZoneId.of("Asia/Shanghai"));
int minuteOfDay = zdt.getHour() * 60 + zdt.getMinute();
BigDecimal total = BigDecimal.ZERO;
for (DeliveryPricingRuleDTO.TimePeriodDTO period : typeConfig.getTimes()) {
if (period.getIsOpen() == null || period.getIsOpen() != 1) continue;
if (period.getStart() == null || period.getEnd() == null) continue;
if (period.getStart() <= period.getEnd()) {
if (minuteOfDay >= period.getStart() && minuteOfDay < period.getEnd()) {
total = total.add(period.getMoney() != null ? period.getMoney() : BigDecimal.ZERO);
}
} else {
if (minuteOfDay >= period.getStart() || minuteOfDay < period.getEnd()) {
total = total.add(period.getMoney() != null ? period.getMoney() : BigDecimal.ZERO);
}
}
}
return total;
}
/**
* 计算预计送达分钟数
* City.getLength()
*/
private int calcEstimatedMinutes(DeliveryPricingConfigDTO pricingConfig, BigDecimal distanceKm) {
if (pricingConfig.getDistanceBasicTime() == null) return 0;
int basicTime = pricingConfig.getDistanceBasicTime();
BigDecimal basicKm = pricingConfig.getDistanceBasic() != null ? pricingConfig.getDistanceBasic() : BigDecimal.ZERO;
int moreTime = pricingConfig.getDistanceMoreTime() != null ? pricingConfig.getDistanceMoreTime() : 0;
if (distanceKm.compareTo(basicKm) <= 0) return basicTime;
BigDecimal moreKm = distanceKm.subtract(basicKm);
return (int) (basicTime + moreKm.doubleValue() * moreTime);
}
private DeliveryPricingRuleDTO getTypeConfig(DeliveryPricingConfigDTO config, int orderType) {
return switch (orderType) {
case 1 -> config.getType1();
case 2 -> config.getType2();
case 6 -> config.getType6();
default -> null;
};
}
private BigDecimal nvl(BigDecimal v) {
return v != null ? v : BigDecimal.ZERO;
}
private BigDecimal calcDistanceStepFee(BigDecimal basicKm, BigDecimal distanceKm,
List<DeliveryPricingRuleDTO.DistanceStepDTO> steps) {
List<DeliveryPricingRuleDTO.DistanceStepDTO> sorted = new ArrayList<>(steps);
sorted.sort(Comparator.comparing(step -> step.getListOrder() == null ? 0 : step.getListOrder()));
BigDecimal fee = BigDecimal.ZERO;
BigDecimal prevThreshold = basicKm;
for (DeliveryPricingRuleDTO.DistanceStepDTO step : sorted) {
BigDecimal endDistance = nvl(step.getEndDistance());
BigDecimal unitDistance = nvl(step.getUnitDistance());
BigDecimal unitFee = nvl(step.getUnitFee());
if (unitDistance.compareTo(BigDecimal.ZERO) <= 0 || unitFee.compareTo(BigDecimal.ZERO) < 0
|| endDistance.compareTo(prevThreshold) <= 0) {
continue;
}
BigDecimal capped = distanceKm.min(endDistance);
if (capped.compareTo(prevThreshold) > 0) {
BigDecimal segments = capped.subtract(prevThreshold)
.divide(unitDistance, 0, RoundingMode.CEILING);
fee = fee.add(segments.multiply(unitFee));
prevThreshold = endDistance;
}
if (distanceKm.compareTo(endDistance) <= 0) {
return fee.setScale(2, RoundingMode.HALF_UP);
}
}
if (!sorted.isEmpty() && distanceKm.compareTo(prevThreshold) > 0) {
DeliveryPricingRuleDTO.DistanceStepDTO last = sorted.get(sorted.size() - 1);
BigDecimal unitDistance = nvl(last.getUnitDistance());
BigDecimal unitFee = nvl(last.getUnitFee());
if (unitDistance.compareTo(BigDecimal.ZERO) > 0) {
BigDecimal segments = distanceKm.subtract(prevThreshold)
.divide(unitDistance, 0, RoundingMode.CEILING);
fee = fee.add(segments.multiply(unitFee));
}
}
return fee.setScale(2, RoundingMode.HALF_UP);
}
private BigDecimal applyMinFee(BigDecimal total, DeliveryPricingRuleDTO typeConfig, DeliveryFeeResultVO result) {
BigDecimal finalTotal = total.setScale(2, RoundingMode.HALF_UP);
BigDecimal minFee = nvl(typeConfig.getMinFee()).setScale(2, RoundingMode.HALF_UP);
result.setMinFee(minFee);
if (minFee.compareTo(BigDecimal.ZERO) > 0 && finalTotal.compareTo(minFee) < 0) {
result.setMinFeeApplied(1);
return minFee;
}
result.setMinFeeApplied(0);
return finalTotal;
}
}