176 lines
6.4 KiB
JavaScript
176 lines
6.4 KiB
JavaScript
// 点餐结算页面的优惠结算逻辑
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// 原价
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let prices = 0;
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// 实际付款
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let payments = 0;
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// 消费卡抵扣金额
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let Actualamounts = 0;
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export default {
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computed: {
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// 核心计算
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calculationamount() {
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console.log('进入计算');
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// 该计算中所输出的打印均为出问题之后方便调试勿删
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/**
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* @param {already_deduction_amount} 属性是为了构建逻辑计算展示该商品实际抵扣的金额
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* @param {deduction_amount} 需要提交给后台的单个商品优化价格
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* @param {Discountarrcondition} 是否显示余额不足提示
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* @param {max_deduction} 每个商品的最大优惠价格
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* @param {is_deduction} 单个商品是否优惠
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* @param {FormData['is_deduction']} 整个订单是否有优惠
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* @param {FormData['deduction_amount_total']} 整个订单的优惠价格
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* */
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if (this['FormInfor']['products'] <= 0) return {
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// 原价
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prices,
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// 实际付款
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payments,
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// 消费卡抵扣金额
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Actualamounts,
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};
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let amount = this['amount'];
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console.log(this['FormInfor']['products'],'products');
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// 取出当前勾选的商品
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let Deductionarr = this['FormInfor']['products'].filter(item => {
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if (item['is_deduction']) {
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return item
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}
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});
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// 取出当前未勾选的商品
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let noDeductionarr = this['FormInfor']['products'].filter(item => {
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if (!item['is_deduction']) {
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// 将未选择优惠的商品的实际抵扣价格补回余额中
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amount += item['deduction_amount'];
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// 将实际补扣优惠归零
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item['deduction_amount'] = 0;
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return item
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}
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});
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// 勾选商品计算逻辑
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for (var i = 0; i < Deductionarr['length']; i++) {
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let item = Deductionarr[i];
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let max_deduction = (item['max_deduction'] * item['num']);
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// item['is_deduction'] = 1;
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console.log('当前选择优惠商品', item);
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console.log('当前余额', amount)
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/**
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* @如果当前商品的实际抵扣金额大于等于最大优惠金额则代表已经计算过了直接跳过当前循环进入下一个循环
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* */
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if (item['deduction_amount'] >= max_deduction) {
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console.log('当前选择优惠商品优惠条件满足跳出');
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console.log(`当前选择优惠商品实际抵扣金额${item['deduction_amount']}`);
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console.log(`当前选择优惠商品展示优惠金额${item['already_deduction_amount']}`);
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item['Discountarrcondition'] = false;
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continue;
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};
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/**
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* @如果当前商品的实际抵扣金额小于最大优惠金额则代表当前商品为余额不足状态
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* */
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if (item['deduction_amount'] < max_deduction) {
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console.log('当前选择优惠商品为不足抵扣状态');
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console.log(`当前商品实际抵扣金额${item['deduction_amount']}`);
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/**
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* @最大抵扣金额减去已经抵扣的金额得到需要补的优惠金额
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* */
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let repair = max_deduction - item['deduction_amount'];
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console.log(`当前商品需补优惠金额${repair}`);
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if (amount >= repair) {
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console.log('当前余额大于需要补的优惠金额');
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item['deduction_amount'] += repair;
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item['Discountarrcondition'] = false;
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amount -= repair;
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} else if (amount < repair) {
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console.log('当前余额小于于需要补的优惠金额');
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item['deduction_amount'] += amount;
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item['Discountarrcondition'] = true;
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amount = 0;
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}
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// 展示金额最后计算完毕之后再设置,一切以deduction_amount实际抵扣金额为标准
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item['already_deduction_amount'] = item['deduction_amount'];
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console.log(`当前商品补完优惠金额之后剩余余额${amount}`);
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console.log(`当前商品补完优惠金额之后的实际补贴金额${item['deduction_amount']}`);
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console.log(`当前商品补完优惠金额之后的展示补贴金额${item['already_deduction_amount']}`);
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}
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};
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// 未勾选商品计算逻辑
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for (var i = 0; i < noDeductionarr['length']; i++) {
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let item = noDeductionarr[i];
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let max_deduction = (item['max_deduction'] * item['num']);
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console.log('当前未选择优惠商品', item);
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console.log('当前余额', amount)
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/**
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* @剩余余额足够抵扣当前商品则展示可抵扣金额
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* */
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if (amount >= max_deduction) {
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console.log(`当前余额足够抵扣未勾选优惠的第${i}个商品`);
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item['already_deduction_amount'] = max_deduction;
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// 隐藏余额不足提示
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item['Discountarrcondition'] = false;
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} else {
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console.log(`当前余额不足够抵扣未勾选优惠的第${i}个商品`);
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// 剩余余额不足够抵扣当前商品则将剩余余额补到展示抵扣上
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item['already_deduction_amount'] = amount;
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item['Discountarrcondition'] = true;
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}
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console.log(
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`当前未勾选优惠的第${i}个商品的展示优惠${item['already_deduction_amount']}和实际抵扣优惠${item['deduction_amount']}`);
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}
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// 计算消费卡抵扣
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Actualamounts = this['FormInfor']['products'].map(item => {
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if (item['is_deduction']) {
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return item['deduction_amount'];
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}
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return 0
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}).reduce((total, currentValue) => {
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return total + currentValue;
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});
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// 计算原价
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prices = this['FormInfor']['products'].map(item => {
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return item['bt_price'] * item['num']
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// if(this['BrandInfor']['brand_id'] == 10 || this['BrandInfor']['brand_id'] == 2){
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// ;
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// }else{
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// return item['pay_price'] * item['num'];
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// }
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}).reduce((total, currentValue) => {
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return total + currentValue;
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});
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this['amount'] = amount;
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this['FormInfor']['is_deduction'] = Deductionarr['length'] > 0 ? 1 : 0;
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this['FormInfor']['deduction_amount_total'] = Actualamounts;
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payments = prices - Actualamounts;
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return {
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// 原价
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prices,
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// 实际付款
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payments,
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// 消费卡抵扣金额
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Actualamounts,
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};
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},
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// 计算佣金
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commission() {
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try {
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let _m = this['FormInfor']['products'].map(item => {
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return item['self_commission'] * item['num']
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}).reduce((total, currentValue) => {
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return total + currentValue;
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});
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return this.RetainDecimalPoints({
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num:String(_m),
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toFixed:4,
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iscarry:false
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})
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} catch (e) {
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return 0
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}
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},
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}
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}
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