101 lines
3.4 KiB
JavaScript
101 lines
3.4 KiB
JavaScript
export function isTui(item){
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return item.status=='return'||item.status=='refund'||item.status=='refunding'
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}
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//计算商品券优惠价格
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export function returnProductCouponPrice(coup, goodsArr, vipUser) {
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const item = goodsArr.find(v => v.productId == coup.proId);
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if(!item){
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return 0
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}
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const memberPrice = item.memberPrice ? item.memberPrice : item.price;
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const price = item ? (vipUser.isVip ? memberPrice : item.price) : 0;
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return price*coup.num
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}
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//返回新的商品列表，过滤掉退菜的，退单的商品
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export function returnNewGoodsList(arr) {
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let goodsMap={}
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return arr.filter(v => !isTui(v))
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}
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//根据当前购物车商品以及数量,已选券对应商品数量，判断该商品券是否可用
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export function returnCoupCanUse(goodsArr=[],coup,selCoupArr=[]) {
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// if(!coup.use){
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// return false
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// }
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const findGoods=goodsArr.filter(v=>v.productId==coup.proId)
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if(!findGoods.length){
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return false
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}
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const findGoodsTotalNumber=findGoods.reduce((prve,cur)=>{
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return prve+cur.num*1
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},0)
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const selCoupNumber=selCoupArr.filter(v=>v.proId==coup.proId).reduce((prve,cur)=>{
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return prve+cur.num*1
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},0)
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if(selCoupNumber>=findGoodsTotalNumber){
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return false
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}
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return findGoodsTotalNumber<(coup.num+selCoupNumber)?false:true
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}
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//查找购物车商品根据购物车商品数据返回商品券信息（抵扣价格以及是否满足可用需求）
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export function returnProductCoupon(coup, goodsArr, vipUser,selCoupArr=[]) {
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const newGoodsArr = returnNewGoodsList(goodsArr)
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const item = newGoodsArr.find(v => v.productId == coup.proId);
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if(!item){
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return {...coup, discountAmount: 0,use:false}
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}
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const memberPrice = item.memberPrice ? item.memberPrice : item.price;
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const price = item ? (vipUser.isVip ? memberPrice : item.price) : 0;
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const discountAmount=(price*coup.num).toFixed(2)
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console.log(discountAmount);
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const canUse=!coup.use?false:(discountAmount>0&&returnCoupCanUse(goodsArr,coup,selCoupArr))
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// const canUse=discountAmount>0
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return { ...coup, discountAmount: discountAmount,use:canUse}
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}
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/**
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* 根据购物车商品计算商品券抵扣价格以及是否满足可用需求
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* 1.商品券对应商品数量大于购物车对应商品数量不可用
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* 2.未在购物车找到相关商品不可用
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* @param {*} coupArr
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* @param {*} goodsArr
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* @param {*} vipUser
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* @returns
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*/
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export function returnProductAllCoup(coupArr, goodsArr, vipUser){
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return coupArr.map((v) => {
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return returnProductCoupon(v, goodsArr, vipUser)
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})
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}
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//计算商品券总优惠价格
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export function returnProductCouponAllPrice(coupArr, goodsArr, vipUser) {
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if(coupArr.length == 0){
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return 0;
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}
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return coupArr.reduce((a, b) => {
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const price = returnProductCouponPrice(b, goodsArr, vipUser)
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return a + price;
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}, 0).toFixed(2);
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}
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//计算满减券总优惠价格
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export function returnFullReductionCouponAllPrice(coupArr) {
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if(coupArr.length == 0){
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return 0;
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}
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return coupArr.filter(v => v.type == 1).reduce((a, b) => {
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const price = b.discountAmount
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return a + price;
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}, 0).toFixed(2);
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}
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//计算优惠券总价格
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export function returnCouponAllPrice(coupArr, goodsArr, vipUser) {
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const poductAllprice=returnProductCouponAllPrice(coupArr, goodsArr, vipUser)
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const pointAllPrice=returnFullReductionCouponAllPrice(coupArr)
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return (poductAllprice*1+pointAllPrice*1).toFixed(2);
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} |