代客下单逻辑修改

This commit is contained in:
2025-11-14 18:06:04 +08:00
parent d0cee95145
commit 67ec915181
26 changed files with 5314 additions and 870 deletions

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lib/carts.ts Normal file
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lib/coupon.ts Normal file
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import { BigNumber } from "bignumber.js";
import _ from "lodash";
import {
ShopInfo,
couponCalcParams,
BaseCartItem,
TimeLimitDiscountConfig,
CanDikouGoodsArrArgs,
Coupon,
ShopUserInfo,
GoodsType,
BackendCoupon,
ExchangeCalculationResult,
PointDeductionRule,
OrderCostSummary,
} from "./types";
/**
* 返回商品单价
* @param goods 商品
* @param user 用户信息
* @param {Object} shopInfo
*/
export function returnGoodsPrice(
goods: BaseCartItem,
user: ShopUserInfo,
shopInfo: ShopInfo,
limitTimeDiscount: TimeLimitDiscountConfig | null | undefined
) {
if (!goods) {
return 0;
}
//是否可以使用会员价
const canUseVipPrice =
user &&
user.isVip &&
user.isMemberPrice &&
goods.memberPrice * 1 > 0 &&
shopInfo &&
shopInfo.isMemberPrice;
// 商家改价
if (goods.discount_sale_amount && goods.discount_sale_amount * 1 > 0) {
return goods.salePrice;
}
// 限时折扣
if (limitTimeDiscount && limitTimeDiscount.id) {
//优先使用
if (goods.isTimeDiscount || goods.is_time_discount) {
return new BigNumber(goods.salePrice)
.times(limitTimeDiscount.discountRate / 100)
.decimalPlaces(2, BigNumber.ROUND_UP)
.toNumber();
}
const canUseFoods = limitTimeDiscount.foods.split(",");
const canUseLimit =
limitTimeDiscount.foodType == 1 ||
canUseFoods.includes(`${goods.productId}`);
if (canUseLimit && limitTimeDiscount.discountPriority == "limit-time") {
return new BigNumber(goods.salePrice)
.times(limitTimeDiscount.discountRate / 100)
.decimalPlaces(2, BigNumber.ROUND_UP)
.toNumber();
}
if (canUseLimit && limitTimeDiscount.discountPriority == "vip-price") {
if (canUseVipPrice) {
return goods.memberPrice;
} else {
return new BigNumber(goods.salePrice)
.times(limitTimeDiscount.discountRate / 100)
.decimalPlaces(2, BigNumber.ROUND_UP)
.toNumber();
}
}
}
if (canUseVipPrice) {
return goods.memberPrice;
}
return goods.salePrice;
}
/**
* 返回商品分组
* @param arr 商品列表
*/
export function returnGoodsGroupMap(arr: BaseCartItem[]) {
let map: { [key: string]: BaseCartItem[] } = {};
arr.forEach((v) => {
const key = v.productId + "_" + v.skuId;
if (!map[key]) {
map[key] = [];
}
map[key].push(v);
});
return map;
}
interface CouponTypes {
1: "满减券";
2: "商品券";
3: "折扣券";
4: "第二件半价券";
5: "消费送券";
6: "买一送一券";
7: "固定价格券";
8: "免配送费券";
}
/**
* 优惠券类型1-满减券2-商品兑换券3-折扣券4-第二件半价券5-消费送券6-买一送一券7-固定价格券8-免配送费券
* @param coupon
*/
export function returnCoupType(coupon: Coupon) {
const couponTypes: CouponTypes = {
1: "满减券",
2: "商品券",
3: "折扣券",
4: "第二件半价券",
5: "消费送券",
6: "买一送一券",
7: "固定价格券",
8: "免配送费券",
};
return couponTypes[coupon.type as keyof CouponTypes] || "未知类型";
}
/**
* 返回商品券抵扣后的商品列表
* @param canDikouGoodsArr 可抵扣商品列表
* @param selCoupon 已选择的优惠券列表
* @param user 用户信息
*/
export function returnCanDikouGoodsArr(args: CanDikouGoodsArrArgs) {
const { canDikouGoodsArr, selCoupon, user, shopInfo, limitTimeDiscount } =
args;
const types = [2, 4, 6];
// 收集已抵扣商品并关联对应的优惠券类型
const goodsCouponGoods = selCoupon
.filter((v) => types.includes(v.type))
.reduce((prev: BaseCartItem[], cur) => {
// 给每个抵扣商品添加所属优惠券类型
if (cur && cur.discount) {
const goodsWithType = cur.discount.hasDiscountGoodsArr.map((goods) => ({
...goods,
couponType: cur.type, // 记录该商品是被哪种类型的优惠券抵扣的
}));
prev.push(...goodsWithType);
}
return prev;
}, []);
const arr = _.cloneDeep(canDikouGoodsArr)
.map((v) => {
const findCart = goodsCouponGoods.find((carts) => carts.id == v.id);
if (findCart) {
// 根据优惠券类型判断扣减数量
if ([4, 6].includes(findCart.couponType ?? 0)) {
// 类型4第二件半价或6买一送一数量减2
if (v.num) {
v.num -= 2;
}
} else {
// 其他类型如类型2商品券按原逻辑扣减对应数量
if (v.num) {
v.num -= findCart.num ?? 0;
}
}
}
return v;
})
.filter((v) => {
const canUseNum = (v.num ?? 0) - (v.returnNum || 0);
if (canUseNum <= 0 || v.is_temporary || v.is_gift) {
return false;
}
return true;
}); // 过滤掉数量<=0的商品,赠菜,临时菜
return arr;
}
/**
* 返回商品是否享用了会员价/会员折扣
* @param {*} goods
*/
function returnGoodsIsUseVipPrice(
shopInfo: ShopInfo,
user: ShopUserInfo,
goods: BaseCartItem
) {
if (goods.is_time_discount) {
return false;
}
if (shopInfo.isMemberPrice != 1 || user.isVip != 1) {
return false;
}
if (shopInfo.isMemberPrice == 1 && user.isVip == 1) {
if (goods.memberPrice <= 0) {
return false;
} else {
return true;
}
}
return false;
}
/**
* 返回可以计算抵扣金额的商品列表
*/
function returnCanCalcGoodsList(
canCalcGoodsArr: BaseCartItem[],
coupon: Coupon,
shopInfo: ShopInfo,
user: ShopUserInfo
) {
return canCalcGoodsArr.filter((goods) => {
console.log("goods");
console.log(goods);
if (
!coupon.discountShare &&
(goods.is_time_discount || goods.isTimeDiscount)
) {
return false;
}
if (
!coupon.vipPriceShare &&
returnGoodsIsUseVipPrice(shopInfo, user, goods)
) {
return false;
}
return true;
});
}
/**
* 判断优惠券是否可使用,并返回不可用原因
*
* @param {Object} args - 函数参数集合
* @param {Array} args.canDikouGoodsArr - 可参与抵扣的商品列表
* @param {Object} args.coupon - 优惠券信息对象
* @param {boolean} args.coupon.use - 优惠券是否启用
* @param {Array} args.coupon.useFoods - 优惠券适用的商品ID列表
* @param {number} args.coupon.fullAmount - 优惠券使用门槛金额
* @param {number} args.coupon.type - 优惠券类型
* @param {number} args.goodsOrderPrice - 订单中所有商品的总金额
* @param {Object} args.user - 用户信息对象
* @param {Object} args.selCoupon - 已经选择的优惠券信息对象
* @param {Object} args.shopInfo
* @param {boolean} args.limitTimeDiscount - 限时折扣
* @returns {Object} - { canUse: boolean, reason: string } 可用状态及不可用原因
*/
export function returnCouponCanUse(args: couponCalcParams) {
let {
canDikouGoodsArr,
coupon,
goodsOrderPrice,
user,
selCoupon,
shopInfo,
isMemberPrice,
limitTimeDiscount,
} = args;
// 优惠券未启用
if (!coupon.use) {
return {
canUse: false,
reason: coupon.noUseRestrictions || "不在可用时间段内",
};
}
if (
limitTimeDiscount &&
limitTimeDiscount.id &&
limitTimeDiscount.foodType == 1 &&
!coupon.discountShare
) {
return {
canUse: false,
reason: coupon.noUseRestrictions || "不可与限时折扣同享",
};
}
// 计算门槛金额
let fullAmount = goodsOrderPrice;
canDikouGoodsArr = returnCanDikouGoodsArr(args);
//优惠券指定门槛商品列表
let canCalcGoodsArr = [...canDikouGoodsArr];
//部分商品参与门槛计算
if (coupon.thresholdFoods.length) {
canCalcGoodsArr = canDikouGoodsArr.filter((v) => {
return coupon.thresholdFoods.find((food) => food.id == v.productId);
});
}
canCalcGoodsArr = returnCanCalcGoodsList(
canCalcGoodsArr,
coupon,
shopInfo,
user
);
console.log("canCalcGoodsArr");
console.log(canCalcGoodsArr);
fullAmount = canCalcGoodsArr.reduce((pre, cur) => {
return (
pre +
returnGoodsPrice(cur, user, shopInfo, limitTimeDiscount) * (cur.num || 0)
);
}, 0);
// 是否全部商品可用
const isDikouAll = coupon.useFoods.length === 0;
// 订单可用商品列表
let canUseGoodsArr: BaseCartItem[] = [];
if (!isDikouAll) {
canUseGoodsArr = canDikouGoodsArr.filter((v) => {
return coupon.useFoods.find((food) => food.id == v.productId);
});
}
// if (user.isVip && !coupon.vipPriceShare) {
// return {
// canUse: false,
// reason: "非会员可用",
// };
// }
if (selCoupon.length > 0 && !selCoupon[0].otherCouponShare) {
return {
canUse: false,
reason: "当前选中的券不可与其他券同享",
};
}
if (selCoupon.length > 0 && !coupon.otherCouponShare) {
return {
canUse: false,
reason: "当前选中的券不可与其他券同享",
};
}
// 满减券和折扣券计算门槛金额是否满足
if ([1, 3].includes(coupon.type)) {
if (canCalcGoodsArr.length <= 0) {
return {
canUse: false,
reason: "没有可参与计算门槛的商品",
};
}
// 不满足门槛金额
if (fullAmount < (coupon.fullAmount || 0)) {
return {
canUse: false,
reason: `${coupon.fullAmount}元可用,当前可参与金额${fullAmount}`,
};
}
}
// 商品兑换券,第二件半价和买一送一判断是否有可用商品
if ([2, 4, 5].includes(coupon.type)) {
// 没有符合条件的商品
if (isDikouAll && canDikouGoodsArr.length === 0) {
return {
canUse: false,
reason: "没有符合条件的商品",
};
}
if (!isDikouAll && canUseGoodsArr.length === 0) {
return {
canUse: false,
reason: "没有符合条件的商品",
};
}
if (coupon.type == 2) {
if (canCalcGoodsArr.length <= 0) {
return {
canUse: false,
reason: "没有符合计算门槛条件的商品",
};
}
if (fullAmount < (coupon.fullAmount || 0)) {
return {
canUse: false,
reason: `${coupon.fullAmount}元可用,当前可参与金额${fullAmount}`,
};
}
}
}
//商品兑换券是否达到门槛金额
if (coupon.type == 2 && goodsOrderPrice < (coupon.fullAmount || 0)) {
return {
canUse: false,
reason: `${coupon.fullAmount}元可用,当前可参与金额${fullAmount}`,
};
}
// 买一送一券特殊验证
if (coupon.type === 6) {
let canUse = false;
if (isDikouAll) {
canUse = canDikouGoodsArr.some((v) => (v.num || 0) >= 2);
} else if (canUseGoodsArr.length > 0) {
canUse = canUseGoodsArr.some((v) => (v.num || 0) >= 2);
}
if (!canUse) {
return {
canUse: false,
reason: "需要购买至少2件相同的商品才能使用",
};
}
}
// 第二件半价券特殊验证
if (coupon.type === 4) {
let canUse = false;
if (isDikouAll) {
canUse = canDikouGoodsArr.some((v) => (v.num || 0) >= 2);
} else if (canUseGoodsArr.length > 0) {
canUse = canUseGoodsArr.some((v) => (v.num || 0) >= 2);
}
if (!canUse) {
return {
canUse: false,
reason: "需要购买至少2件相同的商品才能使用",
};
}
}
// 所有条件都满足
return {
canUse: true,
reason: "",
};
}
/**
* 计算抵扣商品金额
* @param discountGoodsArr 可抵扣商品列表
* @param discountNum 抵扣数量
* @param user 用户信息
* @param {Object} shopInfo 店铺信息
*/
export function calcDiscountGoodsArrPrice(
discountGoodsArr: BaseCartItem[],
discountNum: number,
user: ShopUserInfo,
shopInfo: ShopInfo,
limitTimeDiscount?: TimeLimitDiscountConfig | null | undefined
) {
let hasCountNum = 0;
let discountPrice = 0;
let hasDiscountGoodsArr = [];
for (let i = 0; i < discountGoodsArr.length; i++) {
if (hasCountNum >= discountNum) {
break;
}
const goods = discountGoodsArr[i];
const shengyuNum = discountNum - hasCountNum;
const num = Math.min(goods.num || 0, shengyuNum);
const realPrice = returnGoodsPrice(
goods,
user,
shopInfo,
limitTimeDiscount
);
discountPrice += realPrice * num;
hasCountNum += num;
hasDiscountGoodsArr.push({
...goods,
num,
});
}
return {
discountPrice,
hasDiscountGoodsArr,
};
}
/**
* 计算优惠券抵扣金额
* @param arr 可抵扣商品列表
* @param coupon 优惠券
* @param user 用户信息
* @param goodsOrderPrice 商品订单金额
* @param selCoupon 已选择的优惠券列表
* @param shopInfo 店铺信息
* @param limitTimeDiscount 限时折扣
*/
export function returnCouponDiscount(
arr: BaseCartItem[],
coupon: Coupon,
user: ShopUserInfo,
goodsOrderPrice: number,
selCoupon: Coupon[],
shopInfo: ShopInfo,
limitTimeDiscount?: TimeLimitDiscountConfig | null | undefined
) {
arr = returnCanDikouGoods(arr, user, shopInfo, limitTimeDiscount);
const canDikouGoodsArr = returnCanDikouGoodsArr({
canDikouGoodsArr: arr,
selCoupon,
user,
shopInfo,
limitTimeDiscount,
});
if (coupon.type == 2) {
return returnCouponProductDiscount(
canDikouGoodsArr,
coupon,
user,
shopInfo,
limitTimeDiscount
);
}
if (coupon.type == 6) {
const result = returnCouponBuyOneGiveOneDiscount(
canDikouGoodsArr,
coupon,
user,
shopInfo,
limitTimeDiscount
);
return result;
}
if (coupon.type == 4) {
return returnSecoendDiscount(
canDikouGoodsArr,
coupon,
user,
shopInfo,
limitTimeDiscount
);
}
if (coupon.type == 3) {
return returnCouponZhekouDiscount(
canDikouGoodsArr,
coupon,
user,
goodsOrderPrice,
selCoupon,
limitTimeDiscount
);
}
}
/**
* 折扣券抵扣金额
* @param canDikouGoodsArr 可抵扣商品列表
* @param coupon 优惠券
* @param user 用户信息
* @param goodsOrderPrice 商品订单金额
* @param selCoupon 已选择的优惠券列表
* @param limitTimeDiscount 限时折扣
*/
export function returnCouponZhekouDiscount(
canDikouGoodsArr: BaseCartItem[],
coupon: Coupon,
user: ShopUserInfo,
goodsOrderPrice: number,
selCoupon: Coupon[],
limitTimeDiscount?: TimeLimitDiscountConfig | null | undefined
) {
let { discountRate, maxDiscountAmount } = coupon;
maxDiscountAmount = maxDiscountAmount || 0;
// 计算商品优惠券折扣总和使用BigNumber避免精度问题
const goodsCouponDiscount = selCoupon
.filter((v) => v.type == 2)
.reduce((prve, cur) => {
return new BigNumber(prve).plus(
new BigNumber(cur?.discount?.discountPrice || 0)
);
}, new BigNumber(0));
// 将商品订单价格转换为BigNumber并减去优惠券折扣
const adjustedGoodsOrderPrice = new BigNumber(goodsOrderPrice).minus(
goodsCouponDiscount
);
// 计算优惠比例:(100 - 折扣率) / 100
const discountAmountRatio = new BigNumber(100)
.minus(discountRate || 0)
.dividedBy(100);
// 计算折扣金额:调整后的商品订单金额 × 优惠比例
let discountPrice = adjustedGoodsOrderPrice
.times(discountAmountRatio)
.decimalPlaces(2, BigNumber.ROUND_FLOOR)
.toNumber();
// 应用最大折扣金额限制
if (maxDiscountAmount !== 0) {
discountPrice =
discountPrice >= maxDiscountAmount ? maxDiscountAmount : discountPrice;
}
return {
discountPrice, // 折扣抵扣金额(即优惠的金额)
hasDiscountGoodsArr: [],
};
}
/**
* 商品券抵扣金额
* @param canDikouGoodsArr 可抵扣商品列表
* @param coupon 优惠券
* @param user 用户信息
* @param shopInfo 店铺信息
*/
export function returnCouponProductDiscount(
canDikouGoodsArr: BaseCartItem[],
coupon: Coupon,
user: ShopUserInfo,
shopInfo: ShopInfo,
limitTimeDiscount?: TimeLimitDiscountConfig | null | undefined
) {
let { useFoods, discountNum, useRule } = coupon;
discountNum = discountNum || 0;
//抵扣商品数组
let discountGoodsArr = [];
//抵扣全部商品
if (useFoods.length === 0) {
if (useRule == "price_asc") {
discountGoodsArr = canDikouGoodsArr.slice(discountNum * -1).reverse();
} else {
discountGoodsArr = canDikouGoodsArr.slice(0, discountNum);
}
} else {
//抵扣选中商品
const discountSelGoodsArr = canDikouGoodsArr.filter((v) =>
useFoods.find((food) => food.id == v.productId)
);
if (useRule == "price_asc") {
discountGoodsArr = discountSelGoodsArr.slice(discountNum * -1).reverse();
} else {
discountGoodsArr = discountSelGoodsArr.slice(0, discountNum);
}
}
const result = calcDiscountGoodsArrPrice(
discountGoodsArr,
discountNum,
user,
shopInfo,
limitTimeDiscount
);
return result;
}
// 返回买一送一券抵扣详情
/**
* @param canDikouGoodsArr 可抵扣商品列表
* @param coupon 优惠券
* @param user 用户信息
* @param shopInfo 店铺信息
*/
function returnCouponBuyOneGiveOneDiscount(
canDikouGoodsArr: BaseCartItem[],
coupon: Coupon,
user: ShopUserInfo,
shopInfo: ShopInfo,
limitTimeDiscount?: TimeLimitDiscountConfig | null | undefined
) {
const { useFoods, useRule } = coupon;
//抵扣商品
let discountGoods = undefined;
//符合买一送一条件的商品
const canUseGoods = canDikouGoodsArr.filter((v) => (v.num || 0) >= 2);
//抵扣全部商品
if (useFoods.length === 0) {
if (useRule == "price_asc") {
discountGoods = canUseGoods[canUseGoods.length - 1];
} else {
discountGoods = canUseGoods[0];
}
} else {
//符合抵扣条件的商品
const canUseGoods1 = canUseGoods.filter((v) =>
useFoods.find((food) => food.id == v.productId)
);
if (useRule == "price_asc") {
discountGoods = canUseGoods1[canUseGoods1.length - 1];
} else {
discountGoods = canUseGoods1[0];
}
}
let discountPrice = 0;
let hasDiscountGoodsArr: BaseCartItem[] = [];
if (discountGoods) {
discountPrice = returnGoodsPrice(
discountGoods,
user,
shopInfo,
limitTimeDiscount
);
hasDiscountGoodsArr = [discountGoods];
}
return {
discountPrice: discountPrice <= 0 ? 0 : discountPrice,
hasDiscountGoodsArr,
};
}
/**
* 返回第二件半价券抵扣详情
* @param canDikouGoodsArr 可抵扣商品列表
* @param coupon 优惠券
* @param user 用户信息
* @param shopInfo 店铺信息
*/
function returnSecoendDiscount(
canDikouGoodsArr: BaseCartItem[],
coupon: Coupon,
user: ShopUserInfo,
shopInfo: ShopInfo,
limitTimeDiscount?: TimeLimitDiscountConfig | null | undefined
) {
const { useFoods, useRule } = coupon;
//抵扣商品
let discountGoods = undefined;
//符合条件的商品
const canUseGoods = canDikouGoodsArr.filter((v) => (v.num || 0) >= 2);
//抵扣全部商品
if (useFoods.length === 0) {
if (useRule == "price_asc") {
discountGoods = canUseGoods[canUseGoods.length - 1];
} else {
discountGoods = canUseGoods[0];
}
} else {
//符合抵扣条件的商品
const canUseGoods1 = canUseGoods.filter((v) =>
useFoods.find((food) => food.id == v.productId)
);
if (useRule == "price_asc") {
discountGoods = canUseGoods1[canUseGoods1.length - 1];
} else {
discountGoods = canUseGoods1[0];
}
}
let discountPrice = 0;
let hasDiscountGoodsArr: BaseCartItem[] = [];
if (discountGoods) {
discountPrice = returnGoodsPrice(
discountGoods,
user,
shopInfo,
limitTimeDiscount
);
hasDiscountGoodsArr = [discountGoods];
}
//返回半价价格
return {
discountPrice:
discountPrice <= 0
? 0
: new BigNumber(discountPrice).dividedBy(2).toNumber(),
hasDiscountGoodsArr,
};
}
/**
* 返回可以抵扣优惠券的商品列表,过滤掉赠品、临时商品,价格从高到低排序
* @param arr 商品列表
* @param user 用户信息
* @param shopInfo 店铺信息
* @param limitTimeDiscount 限时折扣
*/
export function returnCanDikouGoods(
arr: BaseCartItem[],
user: ShopUserInfo,
shopInfo: ShopInfo,
limitTimeDiscount?: TimeLimitDiscountConfig | null | undefined
) {
const result = arr
.filter((v) => {
return !v.is_temporary && !v.is_gift;
})
.filter((v) => {
return (v.num || 0) > 0;
})
.sort((a, b) => {
return (
returnGoodsPrice(b, user, shopInfo, limitTimeDiscount) -
returnGoodsPrice(a, user, shopInfo, limitTimeDiscount)
);
});
return result;
}
export const utils = {
returnGoodsPrice,
returnGoodsGroupMap,
returnCoupType,
returnCanDikouGoods,
returnCanDikouGoodsArr,
returnCouponCanUse,
calcDiscountGoodsArrPrice,
returnCouponDiscount,
returnCouponProductDiscount,
returnCouponZhekouDiscount,
};
export default utils;

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export * from "./types";
import OrderPriceCalculator from "./goods";
import couponUtils from "./coupon";
import limitUtils from "./limit";
export { OrderPriceCalculator, couponUtils, limitUtils };
export default {
OrderPriceCalculator,
couponUtils,
limitUtils,
};

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import BigNumber from "bignumber.js";
import _ from "lodash";
import {
BaseCartItem,
ShopUserInfo,
ShopInfo,
TimeLimitDiscountConfig,
CanReturnMemberPriceArgs,
returnPriceArgs,
} from "./types";
/**
* 判断商品是否可以使用限时折扣
* @param goods 商品对象
* @param limitTimeDiscountRes 限时折扣配置
* @param shopInfo 店铺信息
* @param shopUserInfo 店铺用户信息
* @param idKey 商品ID键名默认"id"
* @returns
*/
export function canUseLimitTimeDiscount(
goods: BaseCartItem,
limitTimeDiscountRes: TimeLimitDiscountConfig | null | undefined,
shopInfo: ShopInfo,
shopUserInfo: ShopUserInfo,
idKey = "id" as keyof BaseCartItem
) {
shopInfo = shopInfo || {};
shopUserInfo = shopUserInfo || {};
if (!limitTimeDiscountRes || !limitTimeDiscountRes.id) {
return false;
}
const canUseFoods = (limitTimeDiscountRes.foods || "").split(",");
const goodsCanUse =
limitTimeDiscountRes.foodType == 1 ||
canUseFoods.includes(`${goods[idKey]}`);
if (!goodsCanUse) {
return false;
}
if (limitTimeDiscountRes.discountPriority == "limit-time") {
return true;
}
if (limitTimeDiscountRes.discountPriority == "vip-price") {
if (shopUserInfo.isVip != 1 || shopUserInfo.isMemberPrice != 1) {
return true;
}
if (
shopUserInfo.isVip == 1 &&
shopUserInfo.isMemberPrice == 1 &&
goods.memberPrice * 1 <= 0
) {
return true;
}
}
return false;
}
/**
* 返回商品显示价格
* @params {*} args 参数对象
* @params {*} args.goods 商品对象
* @params {*} args.shopInfo 店铺信息
* @params {*} args.limitTimeDiscountRes 限时折扣信息
* @params {*} args.shopUserInfo 店铺用户信息
* @returns
*/
export function returnPrice(args: returnPriceArgs) {
let {
goods,
shopInfo,
limitTimeDiscountRes,
shopUserInfo,
idKey = "product_id",
} = args;
limitTimeDiscountRes = limitTimeDiscountRes || {
foods: "",
foodType: 2,
discountPriority: "",
discountRate: 0,
id: 0,
shopId: 0,
useType: "",
};
const canUseFoods = (limitTimeDiscountRes.foods || "").split(",");
const includesGoods =
limitTimeDiscountRes.foodType == 1 ||
canUseFoods.includes("" + goods[idKey]);
shopInfo = shopInfo || {};
shopUserInfo = shopUserInfo || {};
if (
shopUserInfo.isMemberPrice == 1 &&
shopUserInfo.isVip == 1 &&
shopInfo.isMemberPrice == 1
) {
const memberPrice = goods.memberPrice || goods.salePrice;
//是会员而且启用会员价
if (limitTimeDiscountRes) {
//使用限时折扣
//限时折扣优先
if (limitTimeDiscountRes.discountPriority == "limit-time") {
if (includesGoods) {
return returnLimitPrice({
price: goods.salePrice,
limitTimeDiscountRes,
});
} else {
return memberPrice;
}
}
if (
limitTimeDiscountRes.discountPriority == "vip-price" &&
includesGoods
) {
if (goods.memberPrice * 1 > 0) {
//会员优先
return memberPrice;
} else {
const price = returnLimitPrice({
price: goods.salePrice,
limitTimeDiscountRes,
goods: goods,
});
return price;
}
} else {
return memberPrice;
}
} else {
//是会员没有限时折扣
return memberPrice;
}
} else {
// console.log('不是会员或者没有启用会员价',goods,limitTimeDiscountRes);
//不是会员或者没有启用会员价
if (limitTimeDiscountRes && limitTimeDiscountRes.id && includesGoods) {
const price = returnLimitPrice({
price: goods.salePrice,
limitTimeDiscountRes,
goods: goods,
});
return price;
} else {
return goods.salePrice;
}
}
}
interface returnLimitPriceArgs {
limitTimeDiscountRes: TimeLimitDiscountConfig | null | undefined;
price: number;
goods?: BaseCartItem;
}
/**
* 返回限时折扣价格
* @params {*} args 参数对象
* @params {*} args.limitTimeDiscountRes 限时折扣信息
* @params {*} args.price 商品价格
* @param {*} args.goods 商品对象
* @returns
*/
export function returnLimitPrice(args: returnLimitPriceArgs) {
const { limitTimeDiscountRes, price, goods } = args;
const discountRate = new BigNumber(
limitTimeDiscountRes ? limitTimeDiscountRes.discountRate : 100
).dividedBy(100);
const result = BigNumber(price)
.times(discountRate)
.decimalPlaces(2, BigNumber.ROUND_UP)
.toNumber();
return result;
}
/**
* 判断是否返回会员价
* @param {*} args 参数对象
* @param {*} args.shopInfo 店铺信息
* @param {*} args.shopUserInfo 店铺用户信息
* @returns
*/
export function canReturnMemberPrice(args: CanReturnMemberPriceArgs) {
const { shopInfo, shopUserInfo } = args;
if (shopUserInfo.isMemberPrice == 1 && shopUserInfo.isVip == 1) {
return true;
} else {
return false;
}
}
/**
* 返回会员价格
* @param {*} goods
* @returns
*/
export function returnMemberPrice(goods: BaseCartItem) {
return goods.memberPrice || goods.salePrice;
}
export const utils = {
returnPrice,
canUseLimitTimeDiscount,
returnLimitPrice,
canReturnMemberPrice,
returnMemberPrice,
};
export default utils;

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/** 商品类型枚举 */
export enum GoodsType {
NORMAL = "normal", // 普通商品
WEIGHT = "weight", // 称重商品
GIFT = "gift", // 赠菜(继承普通商品逻辑,标记用)
EMPTY = "", // 空字符串类型(后端未返回时默认归类为普通商品)
PACKAGE = "package", // 打包商品(如套餐/预打包商品,按普通商品逻辑处理,可扩展特殊规则)
}
/** 优惠券计算结果类型(新增细分字段) */
export interface CouponResult {
deductionAmount: number; // 抵扣金额
excludedProductIds: string[]; // 不适用商品ID列表注意是商品ID非购物车ID
usedCoupon: Coupon | undefined; // 实际使用的优惠券
productCouponDeduction: number; // 新增:商品优惠券抵扣(兑换券等)
fullCouponDeduction: number; // 新增:满减优惠券抵扣
}
/** 兑换券计算结果类型(新增细分字段) */
export interface ExchangeCalculationResult {
deductionAmount: number;
excludedProductIds: string[]; // 不适用商品ID列表商品ID
productCouponDeduction: number; // 新增:兑换券属于商品券,同步记录
}
export interface CouponTypes {
1: "满减券";
2: "商品券";
3: "折扣券";
4: "第二件半价券";
5: "消费送券";
6: "买一送一券";
7: "固定价格券";
8: "免配送费券";
}
/** 优惠券类型枚举 */
export enum CouponType {
FULL_REDUCTION = "full_reduction", // 满减券
DISCOUNT = "discount", // 折扣券
SECOND_HALF = "second_half", // 第二件半价券
BUY_ONE_GET_ONE = "buy_one_get_one", // 买一送一券
EXCHANGE = "exchange", // 商品兑换券
}
/** 后端返回的优惠券原始字段类型 */
export interface BackendCoupon {
id?: number; // 自增主键int64
shopId?: number; // 店铺IDint64
syncId?: number; // 同步Idint64
type?: number; // 优惠券类型1-满减券2-商品兑换券3-折扣券4-第二件半价券5-消费送券6-买一送一券7-固定价格券8-免配送费券
name?: string; // 券名称
useShopType?: string; // 可用门店类型only-仅本店all-所有门店custom-指定门店
useShops?: string; // 可用门店(逗号分隔字符串,如"1,2,3"
useType?: string; // 可使用类型dine堂食/pickup自取/deliv配送/express快递
validType?: string; // 有效期类型fixed固定时间custom自定义时间
validDays?: number; // 有效期(天)
validStartTime?: string; // 有效期开始时间(如"2024-01-01 00:00:00"
validEndTime?: string; // 有效期结束时间
daysToTakeEffect?: number; // 隔天生效
useDays?: string; // 可用周期(如"周一,周二"
useTimeType?: string; // 可用时间段类型all-全时段custom-指定时段
useStartTime?: string; // 可用开始时间(每日)
useEndTime?: string; // 可用结束时间(每日)
getType?: string; // 发放设置:不可自行领取/no可领取/yes
getMode?: string; // 用户领取方式
giveNum?: number; // 总发放数量,-10086为不限量
getUserType?: string; // 可领取用户:全部/all新用户一次/new仅会员/vip
getLimit?: number; // 每人领取限量,-10086为不限量
useLimit?: number; // 每人每日使用限量,-10086为不限量
discountShare?: number; // 与限时折扣同享0-否1-是
vipPriceShare?: number; // 与会员价同享0-否1-是
ruleDetails?: string; // 附加规则说明
status?: number; // 状态0-禁用1-启用
useNum?: number; // 已使用数量
leftNum?: number; // 剩余数量
foods?: string; // 指定门槛商品(逗号分隔字符串,如"101,102"此处为商品ID
fullAmount?: number; // 使用门槛:满多少金额(元)
discountAmount?: number; // 使用门槛:减多少金额(元)
discountRate?: number; // 折扣%如90=9折
maxDiscountAmount?: number; // 可抵扣最大金额(元)
useRule?: string; // 使用规则price_asc-价格低到高price_desc-高到低
discountNum?: number; // 抵扣数量
otherCouponShare?: number; // 与其它优惠共享0-否1-是
createTime?: string; // 创建时间
updateTime?: string; // 更新时间
}
/** 营销活动类型枚举 */
export enum ActivityType {
TIME_LIMIT_DISCOUNT = "time_limit_discount", // 限时折扣
}
/** 基础购物车商品项核心修正新增product_id明确各ID含义 */
export interface BaseCartItem {
id: string | number; // 购物车ID唯一标识购物车中的条目如购物车项主键
product_id: string | number; // 商品ID唯一标识商品用于优惠券/活动匹配,必选)
productId?: string | number; // 商品ID
salePrice: number; // 商品原价(元)
number: number; // 商品数量
num?: number; // 商品数量
isTimeDiscount?: boolean; // 是否限时折扣商品默认false
is_time_discount?: boolean; // 是否限时折扣商品默认false
product_type: GoodsType; // 商品类型
is_temporary?: boolean; // 是否临时菜默认false
isTemporary?: boolean; // 是否临时菜默认false
is_gift?: boolean; // 是否赠菜默认false
isGift?: boolean; // 是否赠菜默认false
returnNum?: number; // 退货数量历史订单用默认0
memberPrice: number; // 商品会员价(元,优先级:商品会员价 > 会员折扣)
discountSaleAmount?: number; // 商家改价后单价(元,优先级最高)
discount_sale_amount?: number; // 商家改价后单价(元,优先级最高)
packFee?: number; // 单份打包费默认0
packNumber?: number; // 堂食打包数量默认0
activityInfo?: {
// 商品参与的营销活动(如限时折扣)
type: ActivityType;
discountRate: number; // 折扣率如0.8=8折
vipPriceShare: boolean; // 是否与会员优惠同享默认false
};
skuData?: {
// SKU扩展数据可选
id: string | number; // SKU ID唯一标识商品规格如颜色/尺寸)
memberPrice: number; // SKU会员价
salePrice?: number; // SKU原价
};
skuId?: string | number; // SKU ID唯一标识商品规格如颜色/尺寸)
couponType?: number; // 优惠券类型1-满减券2-商品兑换券3-折扣券4-第二件半价券5-消费送券6-买一送一券7-固定价格券8-免配送费券
}
export interface CouponFoods {
id: string;
name: string;
images: string;
}
/** 基础优惠券接口(所有券类型继承,包含统一门槛商品字段) */
export interface BaseCoupon {
otherCouponShare?: number; // 与其它优惠共享0-否1-是
id: string | number; // 优惠券ID
type: number; // 工具库字符串枚举由后端couponType转换
name: string; // 对应后端title
available: boolean; // 基于BackendCoupon字段计算的可用性
useShopType?: string; // only-仅本店all-所有门店custom-指定门店
useShops: string[]; // 可用门店ID列表
discountShare: boolean; // 与限时折扣同享0-否1-是(后端字段转换为布尔值)
vipPriceShare: boolean; // 与会员价同享0-否1-是(后端字段转换为布尔值)
useType?: string[]; // 可使用类型dine堂食/pickup自取/deliv配送/express快递
isValid: boolean; // 是否在有效期内
discountAmount?: number; // 减免金额 (满减券有)
fullAmount?: number; // 使用门槛:满多少金额
maxDiscountAmount?: number; // 可抵扣最大金额 元
use: boolean;
discountNum?: number; // 抵扣数量
useRule?: string; // 使用规则price_asc-价格低到高price_desc-高到低
discountRate?: number; // 折扣%如90=9折
noUseRestrictions?: boolean; // 是不可用原因
thresholdFoods: CouponFoods[]; // 门槛商品ID列表空数组=全部商品,非空=指定商品ID
useFoods: CouponFoods[]; // 可用商品ID列表空数组=全部商品,非空=指定商品ID
}
export interface couponDiscount {
discountPrice: number;
hasDiscountGoodsArr: BaseCartItem[];
}
/** 满减券(适配后端字段) */
export interface FullReductionCoupon extends BaseCoupon {
fullAmount: number; // 对应后端fullAmount满减门槛
discountAmount: number; // 对应后端discountAmount减免金额
maxDiscountAmount?: number; // 对应后端maxDiscountAmount最大减免
discount?: couponDiscount;
}
/** 折扣券(适配后端字段) */
export interface DiscountCoupon extends BaseCoupon {
discountRate: number; // 后端discountRate%转小数如90→0.9
maxDiscountAmount: number; // 对应后端maxDiscountAmount最大减免
discount?: couponDiscount;
}
/** 第二件半价券(适配后端字段) */
export interface SecondHalfPriceCoupon extends BaseCoupon {
maxUseCountPerOrder?: number; // 对应后端useLimit-10086=不限)
discount?: couponDiscount;
}
/** 买一送一券(适配后端字段) */
export interface BuyOneGetOneCoupon extends BaseCoupon {
maxUseCountPerOrder?: number; // 对应后端useLimit-10086=不限)
discount?: couponDiscount;
}
/** 商品兑换券(适配后端字段) */
export interface ExchangeCoupon extends BaseCoupon {
deductCount: number; // 对应后端discountNum抵扣数量
sortRule: "low_price_first" | "high_price_first"; // 后端useRule转换
discount?: couponDiscount;
}
/** 所有优惠券类型联合 */
export type Coupon =
| FullReductionCoupon
| DiscountCoupon
| SecondHalfPriceCoupon
| BuyOneGetOneCoupon
| ExchangeCoupon;
/** 营销活动配置如限时折扣applicableProductIds为商品ID列表 */
export interface ActivityConfig {
type: ActivityType;
applicableProductIds?: string[]; // 适用商品ID列表与BaseCartItem.product_id匹配
discountRate: number; // 折扣率如0.8=8折
vipPriceShare: boolean; // 是否与会员优惠同享
}
/** 积分抵扣规则 */
export interface PointDeductionRule {
pointsPerYuan: number; // X积分=1元如100=100积分抵1元
maxDeductionAmount?: number; // 最大抵扣金额(元,默认不限)
}
/** 餐位费配置 */
export interface SeatFeeConfig {
pricePerPerson: number; // 每人餐位费(元)
personCount: number; // 用餐人数默认1
isEnabled: boolean; // 是否启用餐位费默认false
}
/** 商家减免类型枚举 */
export enum MerchantReductionType {
FIXED_AMOUNT = "fixed_amount", // 固定金额减免(如直接减 10 元)
DISCOUNT_RATE = "discount_rate", // 比例折扣减免(如打 9 折,即减免 10%
}
/** 商家减免配置(新增,替代原单一金额字段) */
export interface MerchantReductionConfig {
type: MerchantReductionType; // 减免类型(二选一)
fixedAmount?: number; // 固定减免金额(元,仅 FIXED_AMOUNT 生效≥0
discountRate?: number; // 折扣率(%,仅 DISCOUNT_RATE 生效0-100如 90 代表 9 折)
}
/**商家霸王餐配置 */
export interface FreeDineConfig {
enable: boolean; //是否开启
rechargeThreshold: number; //订单满多少元可以使用
rechargeTimes: number; //充值多少倍免单
withCoupon: boolean; //与优惠券同享
withPoints: boolean; //与积分同享
useType?: string[]; //使用类型 dine-in店内 takeout 自取 post快递takeaway外卖
useShopType?: string; //all 全部 part部分
shopIdList?: number[]; //可用门店id
}
//限时折扣配置
export interface TimeLimitDiscountConfig {
/**
* 折扣优先级 limit-time/vip-price
*/
discountPriority: string;
/**
* 折扣% 范围1-99
*/
discountRate: number;
/**
* 参与商品
*/
foods: string;
/**
* 参与商品 1全部 2部分
*/
foodType: number;
/**
* 自增主键
*/
id: number;
/**
* 店铺ID
*/
shopId: number;
/**
* 可使用类型:堂食 dine-in 外带 take-out 外卖 take-away 配送 post
*/
useType: string;
[property: string]: any;
}
//用户信息
export interface ShopUserInfo {
isVip: number | null; //是否会员
discount: number | null; //用户折扣
isMemberPrice: number | null; //会员折扣与会员价是否同时使用
}
/** 订单额外费用配置 */
export interface OrderExtraConfig {
// merchantReduction: number; // 商家减免金额默认0
// 替换原单一金额字段,支持两种减免形式
merchantReduction: MerchantReductionConfig;
additionalFee: number; // 附加费如余额充值、券包默认0
pointDeductionRule: PointDeductionRule; // 积分抵扣规则
seatFeeConfig: SeatFeeConfig; // 餐位费配置
currentStoreId: string; // 当前门店ID用于验证优惠券适用门店
userPoints: number; // 用户当前积分(用于积分抵扣)
isMember: boolean; // 用户是否会员(用于会员优惠)
memberDiscountRate?: number; // 会员折扣率如0.95=95折无会员价时用
newUserDiscount?: number; // 新用户减免金额默认0
fullReductionActivities: FullReductionActivity[]; // 当前店铺的满减活动列表(后端返回结构)
currentDinnerType: "dine-in" | "take-out" | "take-away" | "post"; // 当前就餐类型匹配useType
isFreeDine?: boolean; //是否霸王餐
freeDineConfig?: FreeDineConfig;
limitTimeDiscount?: TimeLimitDiscountConfig; //限时折扣
shopUserInfo: ShopUserInfo; // 用户信息
}
/** 订单费用汇总(修改:补充商家减免类型和明细) */
export interface OrderCostSummary {
goodsList: BaseCartItem[];
// 商品总件数
goodsTotal: number;
totalDiscountAmount: number;
goodsRealAmount: number; // 商品真实原价总和
goodsOriginalAmount: number; // 商品原价总和
goodsDiscountAmount: number; // 商品折扣金额
couponDeductionAmount: number; // 优惠券总抵扣
productCouponDeduction: number; // 商品优惠券抵扣
fullCouponDeduction: number; // 满减优惠券抵扣
pointDeductionAmount: number; // 积分抵扣金额
seatFee: number; // 餐位费
packFee: number; // 打包费
scoreMaxMoney: number; // 积分最大可抵扣金额
// 新增:商家减免明细
merchantReduction: {
type: MerchantReductionType; // 实际使用的减免类型
originalConfig: MerchantReductionConfig; // 原始配置(便于前端展示)
actualAmount: number; // 实际减免金额计算后的值≥0
};
additionalFee: number; // 附加费
finalPayAmount: number; // 最终实付金额
couponUsed?: Coupon; // 实际使用的优惠券
pointUsed: number; // 实际使用的积分
newUserDiscount: number; // 新用户减免金额默认0
dinnerType?: "dine-in" | "take-out"; // 就餐类型(堂食/自取/配送/快递)
config: OrderExtraConfig; // 订单额外费用配置
//满减活动
fullReduction: {
usedFullReductionActivityFullAmount: number; // 计算出的满减活动的门槛金额
usedActivity?: FullReductionActivity; // 实际使用的满减活动
usedThreshold?: FullReductionThreshold; // 实际使用的满减阈值(多门槛中选最优)
actualAmount: number; // 满减实际减免金额(元)
};
vipDiscountAmount: number; //会员折扣减免金额
// 订单原支付金额
orderOriginFinalPayAmount: number; //订单原金额(包含打包费+餐位费)
}
/** 满减活动阈值单条满减规则满X减Y- 对应 MkDiscountThresholdInsertGroupDefaultGroup */
export interface FullReductionThreshold {
activityId?: number; // 关联满减活动ID
fullAmount?: number; // 满多少金额(元,必填)
discountAmount?: number; // 减多少金额(元,必填)
}
/** 满减活动主表 - 对应 Request 接口(后端真实字段) */
export interface FullReductionActivity {
id?: number; // 自增主键后端字段id
shopId?: number; // 店铺ID后端字段shopId
status?: number; // 活动状态1=未开始2=进行中3=已结束后端字段status
sort?: number; // 排序值越大优先级越高后端字段sort
createTime?: string; // 创建时间后端字段createTime格式如"2025-10-14 13:56:07"
updateTime?: string; // 最新修改时间后端字段updateTime用于优先级排序
validStartTime?: string; // 有效期开始时间后端字段validStartTime格式如"2025-10-14"
validEndTime?: string; // 有效期结束时间后端字段validEndTime格式如"2025-12-14"
useType?: string; // 可使用类型后端字段useType如"dine,pickup,deliv,express"
useDays?: string; // 可用周期后端字段useDays如"周一,周二,周三,周四,周五,周六,周日"
useTimeType?: string; // 可用时间段类型后端字段useTimeTypeall=全时段custom=指定时段)
useStartTime?: string; // 每日可用开始时间后端字段useStartTime如"09:00:00"仅custom时有效
useEndTime?: string; // 每日可用结束时间后端字段useEndTime如"22:00:00"仅custom时有效
couponShare?: number; // 与优惠券同享0=否1=是后端字段couponShare
discountShare?: number; // 与限时折扣同享0=否1=是后端字段discountShare
vipPriceShare?: number; // 与会员价同享0=否1=是后端字段vipPriceShare
pointsShare?: number; // 与积分抵扣同享0=否1=是后端字段pointsShare
thresholds?: FullReductionThreshold[]; // 满减阈值列表多门槛后端字段thresholds
isDel?: boolean; // 是否删除0=否1=是后端字段isDel默认false
}
// 辅助枚举星期映射用于useDays校验
export const WEEKDAY_MAP = {
周一: 1,
周二: 2,
周三: 3,
周四: 4,
周五: 5,
周六: 6,
周日: 0, // JS中getDay()返回0=周日
};
export interface ShopInfo {
isMemberPrice: number; // 是否开启会员价 1是开启
[property: string]: any;
}
export interface couponCalcParams {
canDikouGoodsArr: BaseCartItem[];
coupon: Coupon;
user: ShopUserInfo;
shopInfo: ShopInfo;
selCoupon: Coupon[];
goodsOrderPrice: number; //商品订单总价
isMemberPrice: number; // 是否开启会员价 1是开启
limitTimeDiscount?: TimeLimitDiscountConfig | null | undefined;
}
export interface CanDikouGoodsArrArgs {
canDikouGoodsArr: BaseCartItem[];
selCoupon: Coupon[];
user: ShopUserInfo;
shopInfo: ShopInfo;
limitTimeDiscount?: TimeLimitDiscountConfig | null | undefined;
}
export interface returnPriceArgs {
goods: BaseCartItem;
selCoupon: Coupon[];
user: ShopUserInfo;
shopInfo: ShopInfo;
shopUserInfo: ShopUserInfo;
limitTimeDiscountRes?: TimeLimitDiscountConfig | null | undefined;
idKey?: keyof BaseCartItem;
}
export interface CanReturnMemberPriceArgs {
shopInfo?: ShopInfo;
shopUserInfo: ShopUserInfo;
}