fix: 优惠券调整
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@@ -0,0 +1,303 @@
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import { BigNumber } from "bignumber.js";
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/**
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* 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
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* @param arr 商品列表
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* @param user 用户信息
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*/
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export function returnCanDikouGoods(arr, user) {
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return arr
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.filter((v) => {
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return v.is_temporary != 1 && v.is_gift != 1;
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})
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.sort((a, b) => {
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return returnGoodsPrice(b, user) - returnGoodsPrice(a, user);
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});
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}
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/**
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* 返回商品单价
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* @param goods 商品
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* @param user 用户信息
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*/
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export function returnGoodsPrice(goods, user) {
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if (goods.discount_sale_amount * 1 > 0) {
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return goods.discount_sale_amount;
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}
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if (user.isVip && goods.memberPrice * 1 <= goods.salePrice * 1 && goods.memberPrice * 1 > 0) {
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return goods.memberPrice;
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}
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return goods.salePrice;
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}
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/**
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* 返回商品分组
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* @param arr 商品列表
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*/
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export function returnGoodsGroupMap(arr) {
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let map = {};
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arr.forEach((v) => {
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const key = v.productId + "_" + v.skuId;
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if (!map[key]) {
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map[key] = [];
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}
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map[key].push(v);
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});
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return map;
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}
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/**
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* 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
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* @param coupon
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*/
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export function returnCoupType(coupon) {
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const couponTypes = {
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1: "满减券",
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2: "商品券",
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3: "折扣券",
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4: "第二件半价券",
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5: "消费送券",
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6: "买一送一券",
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7: "固定价格券",
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8: "免配送费券",
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};
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return couponTypes[coupon.type] || "未知类型";
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}
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/**
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* 判券是否可用
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* @param canDikouGoodsArr 可抵扣商品列表
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* @param coupon 优惠券
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* @param goodsOrderPrice 商品订单金额
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* @param user 用户信息
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*/
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export function returnCouponCanUse(canDikouGoodsArr, coupon, goodsOrderPrice, user) {
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if (!coupon.use) {
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return false;
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}
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// 计算门槛金额
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let fullAmount = goodsOrderPrice;
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//是否抵扣全部商品
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const isDikouAll = coupon.useFoods.length === 0;
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let canCalcGoodsArr = [];
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// 订单里参与门槛计算的商品
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if (!isDikouAll) {
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canCalcGoodsArr = canDikouGoodsArr.filter((v) => {
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return coupon.useFoods.find((food) => food.id == v.productId);
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});
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fullAmount = canCalcGoodsArr.reduce((pre, cur) => {
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return pre + returnGoodsPrice(cur, user) * cur.num;
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}, 0);
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}
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//没有符合商品
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if (!isDikouAll && canCalcGoodsArr.length == 0) {
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return false;
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}
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//不满足门槛金额
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if (fullAmount < coupon.fullAmount) {
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console.log("不满足门槛金额");
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return false;
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}
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if (coupon.type == 2) {
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//商品券
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return isDikouAll || canCalcGoodsArr.length > 0;
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}
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if (coupon.type == 1) {
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//满减券
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return fullAmount >= coupon.fullAmount;
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}
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if (coupon.type == 6) {
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//买一送一券
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let canUse = false;
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if (isDikouAll) {
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canUse = canDikouGoodsArr.some((v) => v.num >= 2);
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}
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if (canCalcGoodsArr.length > 0) {
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canUse = canDikouGoodsArr
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.filter((v) => {
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return coupon.useFoods.find((food) => food.id == v.productId);
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})
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.some((v) => v.num >= 2);
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}
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return canUse;
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}
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if (coupon.type == 4) {
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//第二件半价券
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let canUse = false;
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if (isDikouAll) {
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canUse = canDikouGoodsArr.some((v) => v.num >= 2);
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}
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if (canCalcGoodsArr.length > 0) {
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canUse = canDikouGoodsArr
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.filter((v) => {
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return coupon.useFoods.find((food) => food.id == v.productId);
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})
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.some((v) => v.num >= 2);
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}
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return canUse;
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}
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if (coupon.type == 3) {
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//折扣券
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return false;
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}
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}
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/**
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* 计算抵扣商品金额
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* @param discountGoodsArr 可抵扣商品列表
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* @param discountNum 抵扣数量
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* @param user 用户信息
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*/
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export function calcDiscountGoodsArrPrice(discountGoodsArr, discountNum, user) {
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let hasCountNum = 0;
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let discountPrice = 0;
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let hasDiscountGoodsArr = [];
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for (let i = 0; i < discountGoodsArr.length; i++) {
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if (hasCountNum >= discountNum) {
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break;
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}
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const goods = discountGoodsArr[i];
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const shengyuNum = discountNum - hasCountNum;
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const num = Math.min(goods.num, shengyuNum);
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discountPrice += returnGoodsPrice(goods, user) * num;
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hasCountNum += num;
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hasDiscountGoodsArr.push({ ...goods, num });
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}
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return { discountPrice, hasDiscountGoodsArr };
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}
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/**
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* 计算优惠券抵扣金额
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* @param canDikouGoodsArr 可抵扣商品列表
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* @param coupon 优惠券
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* @param user 用户信息
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*/
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export function returnCouponDiscount(canDikouGoodsArr, coupon, user) {
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if (coupon.type == 2) {
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return returnCouponProductDiscount(canDikouGoodsArr, coupon, user);
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}
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if (coupon.type == 6) {
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return returnCouponBuyOneGiveOneDiscount(canDikouGoodsArr, coupon, user);
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}
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if (coupon.type == 4) {
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return returnSecoendDiscount(canDikouGoodsArr, coupon, user);
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}
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}
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/**
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* 商品券抵扣金额
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* @param canDikouGoodsArr 可抵扣商品列表
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* @param coupon 优惠券
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* @param user 用户信息
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*/
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export function returnCouponProductDiscount(canDikouGoodsArr, coupon, user) {
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const { useFoods, discountNum, useRule } = coupon;
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//抵扣商品数组
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let discountGoodsArr = [];
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//抵扣全部商品
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if (useFoods.length === 0) {
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if (useRule == "price_asc") {
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discountGoodsArr = canDikouGoodsArr
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.slice(canDikouGoodsArr.length - discountNum, canDikouGoodsArr.length)
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.reverse();
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} else {
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discountGoodsArr = canDikouGoodsArr.slice(0, discountNum);
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}
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} else {
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//抵扣选中商品
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const discountSelGoodsArr = canDikouGoodsArr.filter((v) =>
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useFoods.find((food) => food.id == v.productId)
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);
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if (useRule == "price_asc") {
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discountGoodsArr = discountSelGoodsArr
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.slice(discountSelGoodsArr.length - discountNum, discountSelGoodsArr.length)
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.reverse();
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} else {
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discountGoodsArr = discountSelGoodsArr.slice(0, discountNum);
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}
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}
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const result = calcDiscountGoodsArrPrice(discountGoodsArr, discountNum, user);
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console.log(result);
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return result;
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}
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// 返回买一送一券抵扣详情
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/**
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* @param canDikouGoodsArr 可抵扣商品列表
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* @param coupon 优惠券
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* @param user 用户信息
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*/
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function returnCouponBuyOneGiveOneDiscount(canDikouGoodsArr, coupon, user) {
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const { useFoods, useRule } = coupon;
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//抵扣商品
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let discountGoods = undefined;
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//符合买一送一条件的商品
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const canUseGoods = canDikouGoodsArr.filter((v) => v.num >= 2);
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//抵扣全部商品
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if (useFoods.length === 0) {
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if (useRule == "price_asc") {
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discountGoods = canUseGoods[canUseGoods.length - 1];
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} else {
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discountGoods = canUseGoods.slice(0, 1);
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}
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} else {
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//符合抵扣条件的商品
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const canUseGoods1 = canUseGoods.filter((v) => useFoods.find((food) => food.id == v.productId));
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console.log(canUseGoods1);
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if (useRule == "price_asc") {
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discountGoods = canUseGoods1[canUseGoods1.length - 1];
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} else {
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discountGoods = canUseGoods1.slice(0, 1);
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}
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}
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console.log("discountGoods");
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console.log(discountGoods);
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const discountPrice = returnGoodsPrice(discountGoods, user);
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const hasDiscountGoodsArr = [discountGoods];
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return { discountPrice, hasDiscountGoodsArr };
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}
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/**
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* 返回第二件半价券抵扣详情
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* @param canDikouGoodsArr 可抵扣商品列表
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* @param coupon 优惠券
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* @param user 用户信息
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*/
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function returnSecoendDiscount(canDikouGoodsArr, coupon, user) {
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const { useFoods, useRule } = coupon;
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//抵扣商品
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let discountGoods = undefined;
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//符合买一送一条件的商品
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const canUseGoods = canDikouGoodsArr.filter((v) => v.num >= 2);
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//抵扣全部商品
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if (useFoods.length === 0) {
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if (useRule == "price_asc") {
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discountGoods = canUseGoods[canUseGoods.length - 1];
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} else {
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discountGoods = canUseGoods.slice(0, 1);
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}
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} else {
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//符合抵扣条件的商品
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const canUseGoods1 = canUseGoods.filter((v) => useFoods.find((food) => food.id == v.productId));
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console.log(canUseGoods1);
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if (useRule == "price_asc") {
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discountGoods = canUseGoods1[canUseGoods1.length - 1];
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} else {
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discountGoods = canUseGoods1.slice(0, 1);
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}
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}
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const discountPrice = returnGoodsPrice(discountGoods, user);
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const hasDiscountGoodsArr = [discountGoods];
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//返回半价价格
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return {
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discountPrice: new BigNumber(discountPrice).dividedBy(2).toNumber(),
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hasDiscountGoodsArr,
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};
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}
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@@ -1205,6 +1205,7 @@ export function calcCouponDeduction(
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excludedProductIds: []
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};
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}
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console.log('toolCoupons', toolCoupons)
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// 2. 优惠券互斥逻辑：兑换券与其他券互斥，优先选最优
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const exchangeCoupons = toolCoupons.filter(c => c.type === CouponType.EXCHANGE);
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