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Commit cc269b8d3141d195e33cf5a08278c320d86fd0f1

Authored by “pengye”
1 parent 7e68dc05
build: skipped

券支付页选择每满券

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Showing 1 changed file with 50 additions and 36 deletions
... ... @@ -65,7 +65,6 @@ Page({
// console.log('listlistlist',JSON.stringify(list));
// list= list.concat(monidata)
list.forEach(detail => {
detail.stringifyUse = detail.use ? JSON.stringify(detail.use) : '';
detail.exp_date = detail.exp_date ? util.determine(detail.exp_date) : '';
detail.arule = detail.arule ? util.determine(detail.arule) : '';
if (detail.arule) {
... ... @@ -128,13 +127,13 @@ Page({
const values = e.detail.value
let arr = []
let currentCoupon = '0'; //没选券 为0 可叠加券1 不可叠加券2
let inputValue = this.data.inputValue * 1
let inputValue = parseFloat(this.data.inputValue)
let val = 0;
for (let i = 0, lenI = list.length; i < lenI; ++i) {
list[i].checked = false;
for (let j = 0, lenJ = values.length; j < lenJ; ++j) {
if (list[i].activity_id === values[j]) {
val += list[i].price * 1
val += parseFloat(list[i].price)
arr.push({
...list[i]
})
... ... @@ -172,7 +171,11 @@ Page({
//选的可叠加券 其他所有的不可叠加券都不可选
if (currentCoupon == '1') {
list.forEach(item => {
if (item.accumulationShow == "0" || (remaining - item.price < 0 && !item.checked)) {
let kyNum = Math.floor(parseFloat(this.data.inputValue)/parseFloat(item.desc))
let count = list.reduce((accumulator, obj) => {
return item.aid === obj.aid&&obj.checked ? accumulator + 1 : accumulator;
}, 0);
if (item.accumulationShow == "0" || ((remaining - item.price < 0) && !item.checked)||(!item.checked&&count>=kyNum)) {
item.showCpupon = '0';
} else if (item.accumulationShow == "1" && item.canCheck == '1') {
item.showCpupon = '1';
... ... @@ -208,10 +211,10 @@ Page({
})
let price = 0;
list.forEach(i => {
price += i.price * 1
price += parseFloat(i.price)
})
console.log('优惠金额----', price);
let val = this.data.inputValue * 1;
let val = parseFloat(this.data.inputValue);
let actualPrice = (val - price).toFixed(2)
price = price.toFixed(2)
this.setData({
... ... @@ -354,7 +357,7 @@ Page({
selectedValue = todayArr.selectMor;
}
selectedValue = !selectedValue
console.log(coupon.aname, coupon.exp_date.week_show, `今天是 ${todayArr.title}，选择值为: ${selectedValue}`);
// console.log(coupon.aname, coupon.exp_date.week_show, `今天是 ${todayArr.title}，选择值为: ${selectedValue}`);
// 根据 isshow 判断法定假日是否可用
if (obj.isshow === "1") {
if (obj.can === "晚餐") {
... ... @@ -366,7 +369,7 @@ Page({
}
str = !str
}
console.log(coupon.aname, '法定节假期', `，选择值为: ${str}`);
// console.log(coupon.aname, '法定节假期', `，选择值为: ${str}`);
}
let availableDate = true;
if (str || selectedValue) {
... ... @@ -401,28 +404,43 @@ Page({
let finalList = []; //最终用的优惠券组合
// 计算可叠加的组合
let maxDiscount = 0;
function backtrack(startIndex, currentCombination, currentDiscount, remainingValue) {
// 如果当前组合的优惠大于最大优惠且剩余金额不小于0，更新最大优惠和最佳组合
if (currentDiscount > maxDiscount && remainingValue >= 0) {
maxDiscount = currentDiscount;
let numIndex=0
let closestSum = -Infinity; // 最接近或等于输入值的和
function backtrack(startIndex, currentCombination, currentSum,couponCount) {
// 如果当前和等于输入值，直接返回
if (currentSum == amount) {
closestSum = currentSum;
list1 = [...currentCombination];
return;
}
// 如果当前和小于等于输入值且更接近输入值，更新最优解
if (currentSum <= amount && currentSum > closestSum) {
closestSum = currentSum;
list1 = [...currentCombination];
}
// 遍历数组
for (let i = startIndex; i < validCoupons.length; i++) {
const coupon = validCoupons[i];
if (coupon.accumulationShow == '1') { // 仅考虑可叠加的优惠券
const discountAmount = parseFloat(coupon.price);
if (remainingValue - discountAmount >= 0) { // 确保剩余金额足够
currentCombination.push(coupon);
backtrack(i + 1, currentCombination, currentDiscount + discountAmount, remainingValue - discountAmount); // 递归时从 i + 1 开始
currentCombination.pop(); // 回溯
}
const obj = validCoupons[i];
if (obj.accumulationShow == '1') { // 仅考虑可叠加的优惠券
if (currentSum*1 + obj.price*1 > amount) continue; // 如果当前和已经超过输入值，跳过
let kyNum = Math.floor(amount/parseFloat(obj.desc))
if (amount - obj.price*1 >= 0&&(!couponCount[obj.aid]||couponCount[obj.aid] < kyNum)) {
couponCount[obj.aid] = (couponCount[obj.aid] || 0) + 1; // 更新使用次数
currentCombination.push(obj); // 添加当前数字到组合
backtrack(i + 1, currentCombination, currentSum*1 + obj.price*1,couponCount); // 递归
currentCombination.pop(); // 回溯
couponCount[obj.aid]--; // 回溯时减少使用次数
}
// 提前退出：如果当前和加上当前数字已经小于输入值，后续的数字也会更小
if (currentSum*1 + obj.price*1 < amount) break;
}
}
}
backtrack(0, [], 0, amount); // 开始回溯
console.log('最佳可叠加优惠券组合:', list1);
const couponCount = {};
backtrack(0, [], 0,couponCount); // 开始回溯
// 遍历有效优惠券，寻找不可叠加的优惠券
let maxNonStackableValue = 0
validCoupons.forEach(coupon => {
if (coupon.accumulationShow === '0') {
const discountAmount = parseFloat(coupon.price);
... ... @@ -430,26 +448,22 @@ Page({
const finalAmount = amount - discountAmount;
// 确保实际支付金额不小于0，并且是最优惠的
if (finalAmount >= 0) {
if (!list2.length || discountAmount > parseFloat(coupon.price)) {
list2.push({
...coupon
}); // 更新最优惠的不可叠加券
if (maxNonStackableValue<discountAmount) {
maxNonStackableValue = discountAmount
list2=[{...coupon}]
}
}
}
});
console.log('可叠加的优惠券组合2', list1);
console.log('可叠加优惠券组合', list1);
console.log('不可叠加的优惠券', list2);
// 计算两个列表的最大优惠值
let maxStackableValue = list1.reduce((total, coupon) => total + parseFloat(coupon.price), 0);
let maxNonStackableValue = list2.reduce((total, coupon) => total + parseFloat(coupon.price), 0);
// 比较两个最大值并输出结果
if (maxStackableValue > maxNonStackableValue) {
console.log(`可叠加优惠券组合的最大优惠值更高: ${maxStackableValue}`);
finalList = list1
} else if (maxStackableValue < maxNonStackableValue) {
console.log(`不可叠加券的最大优惠值更高: ${maxNonStackableValue}`);
finalList = list2
} else {
console.log(`两者的优惠值相同: ${maxStackableValue}`);
... ... @@ -470,11 +484,11 @@ Page({
let discountPrice = 0;
// 更新选中的优惠券
finalList.forEach(coupon => {
let target = arr.find(obj => obj.activity_id === coupon.activity_id);
if (target) {
target.showCpupon = 1;
target.checked = true;
discountPrice += coupon.price * 1; // 使用 parseFloat 确保类型正确
let target = arr.findIndex(obj => obj.activity_id === coupon.activity_id);
if (target>-1) {
arr[target].showCpupon = 1;
arr[target].checked = true;
discountPrice += parseFloat(coupon.price); // 使用 parseFloat 确保类型正确
}
console.log('选中的券', {
...coupon
... ...