package com.oying.modules.sh.utils;
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import com.oying.utils.StringUtils;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* @author xin
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* @description 运费计算器
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* @date 2025/9/27 21:08
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*/
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public class ShippingFeeCalculator {
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// 商品类型枚举
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public enum ProductType {
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FOOD, // 食品小吃、饮料、商超
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SPECIAL // 鲜花、蛋糕、电商、高端餐饮
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}
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// 城市等级枚举
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public enum CityLevel {
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C, D, E
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}
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// 基础运费配置
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private static class BaseFeeConfig {
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private final double foodFee;
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private final double specialFee;
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public BaseFeeConfig(double foodFee, double specialFee) {
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this.foodFee = foodFee;
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this.specialFee = specialFee;
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}
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public double getFee(ProductType type) {
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return type == ProductType.FOOD ? foodFee : specialFee;
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}
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}
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// 各等级对应的基础运费
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private static final Map<CityLevel, BaseFeeConfig> LEVEL_FEES = new HashMap<>();
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static {
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LEVEL_FEES.put(CityLevel.C, new BaseFeeConfig(5.2, 7.2));
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LEVEL_FEES.put(CityLevel.D, new BaseFeeConfig(4.7, 6.7));
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LEVEL_FEES.put(CityLevel.E, new BaseFeeConfig(4.5, 6.0));
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}
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// 城市到等级的映射
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private static final Map<String, CityLevel> CITY_LEVELS = new HashMap<>();
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static {
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// C等级城市
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CITY_LEVELS.put("西安市", CityLevel.C);
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CITY_LEVELS.put("福州市", CityLevel.C);
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CITY_LEVELS.put("上海市", CityLevel.C);
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CITY_LEVELS.put("哈尔滨", CityLevel.C);
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CITY_LEVELS.put("杭州市", CityLevel.C);
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CITY_LEVELS.put("北京市", CityLevel.C);
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CITY_LEVELS.put("长春市", CityLevel.C);
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CITY_LEVELS.put("珠海市", CityLevel.C);
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CITY_LEVELS.put("重庆市", CityLevel.C);
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CITY_LEVELS.put("舟山市", CityLevel.C);
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// D等级城市
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CITY_LEVELS.put("郑州市", CityLevel.D);
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CITY_LEVELS.put("大连市", CityLevel.D);
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CITY_LEVELS.put("天津市", CityLevel.D);
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CITY_LEVELS.put("长沙市", CityLevel.D);
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CITY_LEVELS.put("中山市", CityLevel.D);
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CITY_LEVELS.put("东莞市", CityLevel.D);
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CITY_LEVELS.put("广州市", CityLevel.D);
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CITY_LEVELS.put("贵阳市", CityLevel.D);
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CITY_LEVELS.put("兰州市", CityLevel.D);
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CITY_LEVELS.put("温州市", CityLevel.D);
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CITY_LEVELS.put("厦门市", CityLevel.D);
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CITY_LEVELS.put("惠州市", CityLevel.D);
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CITY_LEVELS.put("深圳市", CityLevel.D);
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CITY_LEVELS.put("青岛市", CityLevel.D);
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// E等级城市
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CITY_LEVELS.put("邯郸市", CityLevel.E);
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CITY_LEVELS.put("宿迁市", CityLevel.E);
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CITY_LEVELS.put("湖州市", CityLevel.E);
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CITY_LEVELS.put("绍兴市", CityLevel.E);
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CITY_LEVELS.put("金华市", CityLevel.E);
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CITY_LEVELS.put("衢州市", CityLevel.E);
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CITY_LEVELS.put("台州市", CityLevel.E);
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CITY_LEVELS.put("丽水市", CityLevel.E);
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CITY_LEVELS.put("阜阳市", CityLevel.E);
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CITY_LEVELS.put("三明市", CityLevel.E);
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CITY_LEVELS.put("南平市", CityLevel.E);
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CITY_LEVELS.put("龙岩市", CityLevel.E);
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CITY_LEVELS.put("宁德市", CityLevel.E);
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CITY_LEVELS.put("淄博市", CityLevel.E);
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CITY_LEVELS.put("济宁市", CityLevel.E);
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CITY_LEVELS.put("威海市", CityLevel.E);
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CITY_LEVELS.put("日照市", CityLevel.E);
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CITY_LEVELS.put("十堰市", CityLevel.E);
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CITY_LEVELS.put("衡阳市", CityLevel.E);
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CITY_LEVELS.put("泸州市", CityLevel.E);
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CITY_LEVELS.put("绵阳市", CityLevel.E);
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CITY_LEVELS.put("泰安市", CityLevel.E);
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CITY_LEVELS.put("廊坊市", CityLevel.E);
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}
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// 加价规则常量
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private static final double BASE_DISTANCE = 1.0; // 起步距离1公里
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private static final double BASE_WEIGHT = 5.0; // 起步重量5公斤
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private static final double DISTANCE_RATE = 1.0; // 距离加价：每公里1元
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private static final double WEIGHT_RATE = 2.0; // 重量加价：每公斤2元
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/**
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* 计算订单运费
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*
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* @param city 城市名称
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* @param productType 商品类型
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* @param distance 配送距离（公里）
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* @param weight 商品重量（公斤）
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* @param isPeakHour 是否午高峰时段
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* @return 总运费
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*/
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public static double calculateShippingFee(String city, ProductType productType,
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double distance, double weight, boolean isPeakHour) {
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if (StringUtils.isEmpty(city)) {
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city = "重庆市";
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}
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// 获取城市等级
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CityLevel level = CITY_LEVELS.get(city);
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// 基础运费
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double baseFee = LEVEL_FEES.get(level).getFee(productType);
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// 距离加价（超过1公里部分，每公里加1元）
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double distanceFee = 0;
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if (distance > BASE_DISTANCE) {
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double extraDistance = Math.min(distance - BASE_DISTANCE, 2.0); // 1-3公里内加价
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distanceFee = Math.ceil(extraDistance) * DISTANCE_RATE;
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}
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// 重量加价（超过5公斤部分，每公斤加2元）
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double weightFee = 0;
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if (weight > BASE_WEIGHT) {
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double extraWeight = weight - BASE_WEIGHT;
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weightFee = Math.ceil(extraWeight) * WEIGHT_RATE;
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}
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// 时段加价（午高峰时段，具体加价金额需补充）
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double peakFee = isPeakHour ? getPeakHourFee() : 0;
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return baseFee + distanceFee + weightFee + peakFee;
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}
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/**
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* 获取午高峰时段加价费用（需要根据具体规则补充）
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*/
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private static double getPeakHourFee() {
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// 根据实际午高峰加价规则返回具体金额
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return 0.0; // 暂设为0，需补充具体规则
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}
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/**
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* 获取城市运费等级信息
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*/
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public static String getCityLevelInfo(String city) {
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if (StringUtils.isEmpty(city)) {
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city = "重庆市";
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}
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CityLevel level = CITY_LEVELS.get(city);
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BaseFeeConfig config = LEVEL_FEES.get(level);
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return String.format("城市: %s, 等级: %s, 食品类起步费: %.1f元, 特殊类起步费: %.1f元",
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city, level, config.foodFee, config.specialFee);
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}
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/**
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* 重量换算kg
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*
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* @param grams 重量 单位：g
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* @return double
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*/
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public static double safeConvert(Integer grams) {
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if (grams == null || grams < 0) {
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return 0.0; // 返回默认值
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}
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return grams / 1000.0;
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}
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// 测试示例
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public static void main(String[] args) {
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// 测试不同城市的运费计算
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System.out.println("=== 运费计算测试 ===");
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double distance = 9.00;
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double width = safeConvert(1500);
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String[] testCities = {null, "", "淄博市", "天津市"};
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for (String city : testCities) {
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System.out.println(getCityLevelInfo(city));
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// 计算示例订单
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double fee1 = calculateShippingFee(city, ProductType.FOOD, distance, width, false);
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double fee2 = calculateShippingFee(city, ProductType.SPECIAL, distance, width, true);
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System.out.printf(" 食品订单(" + distance + "km, " + width + "kg): %.1f元\n", fee1);
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System.out.printf(" 特殊订单(" + distance + "km, " + width + "kg, 高峰): %.1f元\n", fee2);
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System.out.println();
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}
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}
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}
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