549 lines
18 KiB
JavaScript
549 lines
18 KiB
JavaScript
import { generateNewId, generateNewIdAsync } from 'oak-domain/lib/utils/uuid';
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import { getAccountEntity, getPayClazz } from '../utils/payClazz';
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import assert from 'assert';
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import { updateWithdrawState } from './withdraw';
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import { RefundExceedMax, PayUnRefundable, settlePlanExceed, refundOpersNotEnough, refundOpersExceed } from '../types/Exception';
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/**
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* 开始退款的逻辑
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* @param context
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* @param data
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*/
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async function startRefunding(context, data) {
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assert(!data.pay && data.payId);
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const [pay] = await context.select('pay', {
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data: {
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id: 1,
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paid: 1,
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refunded: 1,
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iState: 1,
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entity: 1,
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entityId: 1,
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refundable: 1,
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deposit: {
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id: 1,
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accountId: 1,
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},
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order: {
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id: 1,
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paid: 1,
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refunded: 1,
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settled: 1,
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settlePlanned: 1,
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settlePlan$order: {
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$entity: 'settlePlan',
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data: {
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id: 1,
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price: 1,
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iState: 1,
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settlement$plan: {
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$entity: 'settlement',
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data: {
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id: 1,
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accountId: 1,
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price: 1,
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iState: 1,
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},
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filter: {
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iState: 'unsettled'
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}
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}
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},
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filter: {
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iState: 'unsettled'
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}
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}
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}
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},
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filter: {
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id: data.payId,
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}
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}, { dontCollect: true });
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const { paid, refunded, deposit, order } = pay;
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if (paid - refunded < data.price) {
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throw new RefundExceedMax();
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}
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if (!pay.refundable) {
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throw new PayUnRefundable();
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}
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if (deposit) {
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// 充值不可能从account渠道支付
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assert(pay.entity !== 'account');
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if (!data.withdrawId && !order?.id) {
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//充值退款需创建关联的accountOper,若为提现则在withdraw中创建
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data.accountOper$entity = [
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{
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id: await generateNewIdAsync(),
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action: 'create',
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data: {
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id: await generateNewIdAsync(),
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accountId: deposit.accountId,
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type: 'refund',
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totalPlus: -data.price,
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availPlus: -data.price,
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refundablePlus: -data.price,
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},
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}
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];
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}
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}
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else {
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assert(order);
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// 对settlePlan检查
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// 未结算的settlePlan的金额总和 = order.paid - order.refunded - order.settled - refunded.price
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const { settlePlan$order: settlePlans, paid, refunded, settled } = order;
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let settlePlanAmount = 0;
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settlePlans.forEach((settlePlan) => settlePlanAmount += settlePlan.price);
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const allowPlanPrice = paid - refunded - settled - data.price;
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if (settlePlanAmount > allowPlanPrice) {
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throw new settlePlanExceed(settlePlanAmount - allowPlanPrice);
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}
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const settlements = settlePlans?.map((plan) => plan.settlement$plan).flat();
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const { accountOper$entity: opers, } = data;
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// 对opers检查
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if (order.settled === (order.paid - order.refunded)) {
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// 已全部结算
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// 已全部结算的订单由refund传入的opers决定退款，检查opers的金额总和等于refund的金额
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let amount = 0;
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// 有明确的来源account
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assert(opers && opers instanceof Array, '已结算的订单退款一定要有相应的account来源');
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opers.forEach(({ action, data }) => {
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assert(action === 'create');
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const { type, totalPlus, availPlus, accountId } = data;
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assert(type === 'refund');
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assert(totalPlus === availPlus);
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const settlement = settlements?.find((ele) => ele?.accountId === accountId);
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assert(!!settlement, '请从订单分账的相关账户中选择订单退款的account来源');
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amount += -totalPlus;
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});
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assert(amount === data.price);
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//将order的settled更新
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const newSettled = order.settled - data.price;
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await context.operate('order', {
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id: await generateNewIdAsync(),
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action: 'update',
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data: {
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settled: newSettled,
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},
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filter: {
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id: order.id,
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}
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}, {});
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}
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else if (order.settled === 0) {
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//未结算
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//未结算的订单无opers
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assert(!(opers && opers.length > 0));
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}
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else {
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//部分结算
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/**
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* 部分结算的订单:
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* 1. opers的金额总和 <= 订单已结算金额
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* 2. opers的金额总和 + unsettled的金额 >= 退款金额
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*/
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let opersPrice = 0;
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if (opers && opers.length > 0) {
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opers.forEach(({ action, data }) => {
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assert(action === 'create');
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const { type, totalPlus, availPlus, accountId } = data;
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assert(type === 'refund');
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assert(totalPlus === availPlus);
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const settlement = settlements?.find((ele) => ele?.accountId === accountId);
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assert(!!settlement, '请从订单分账的相关账户中选择订单退款的account来源');
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opersPrice += -totalPlus;
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});
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}
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const { paid, refunded, settled, settlePlan$order: settlePlans } = order;
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const orderUnsettledPrice = paid - refunded - settled;
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if (opersPrice > settled) {
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throw new refundOpersExceed(opersPrice - settled);
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}
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if (opersPrice < data.price - orderUnsettledPrice) {
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throw new refundOpersNotEnough(opersPrice - (data.price - orderUnsettledPrice));
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}
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//将order的settled更新
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const newSettled = order.settled - opersPrice;
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await context.operate('order', {
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id: await generateNewIdAsync(),
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action: 'update',
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data: {
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settled: newSettled,
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},
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filter: {
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id: order.id,
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}
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}, {});
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}
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}
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data.pay = {
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id: generateNewId(),
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action: 'startRefunding',
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data: {},
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};
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}
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/**
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* 退款成功的逻辑
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* @param context
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* @param data
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*/
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async function succeedRefunding(context, refundId) {
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const pays = await context.select('pay', {
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data: {
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id: 1,
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price: 1,
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refunded: 1,
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entity: 1,
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entityId: 1,
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iState: 1,
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paid: 1,
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applicationId: 1,
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application: {
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systemId: 1,
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},
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deposit: {
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id: 1,
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accountId: 1,
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},
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refund$pay: {
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$entity: 'refund',
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data: {
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id: 1,
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price: 1,
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iState: 1,
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loss: 1,
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withdrawId: 1,
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},
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filter: {
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id: refundId,
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},
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}
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},
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filter: {
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refund$pay: {
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'#sqp': 'in',
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id: refundId,
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},
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}
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}, { forUpdate: true, dontCollect: true });
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assert(pays.length === 1);
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const [pay] = pays;
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const { price, paid, refunded, refund$pay: refunds, application, applicationId, entity, entityId } = pay;
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assert(refunds.length === 1);
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const [refund] = refunds;
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const { price: refundPrice, loss: refundLoss, withdrawId } = refund;
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const refunded2 = refunded + refundPrice;
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assert(refunded2 <= paid);
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const action = refunded2 === paid ? 'refundAll' : 'refundPartially';
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await context.operate('pay', {
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id: await generateNewIdAsync(),
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action,
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data: {
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refunded: refunded2,
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refundable: refunded2 < paid,
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},
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filter: {
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id: pay.id,
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}
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}, {});
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let d = undefined; //退回至account的退款无渠道退款补偿
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if (entity === 'account') {
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//退回至account中的退款，创建accountOper，更新account余额
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await context.operate('accountOper', {
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id: await generateNewIdAsync(),
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action: 'create',
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data: {
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id: await generateNewIdAsync(),
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accountId: pay.entityId,
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entity: 'refund',
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entityId: refund.id,
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type: 'consumeBack',
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totalPlus: refundPrice - refundLoss,
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availPlus: refundPrice - refundLoss,
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}
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}, {});
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}
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else {
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//订单退回至非account的退款会使得系统对应账户的资金发生流出
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const payClazz = await getPayClazz(entity, entityId, context);
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// 实际执行的退款的额度应该是price - loss
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const [delta, sysAccountEntity, sysAccountEntityId] = payClazz.calcRefundTax(refundPrice - refundLoss);
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// sysAccount上减掉实际退款的额度-税费
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await context.operate('sysAccountOper', {
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id: await generateNewIdAsync(),
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action: 'create',
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data: {
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id: await generateNewIdAsync(),
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delta: refundLoss - refundPrice - delta,
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entity: sysAccountEntity,
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entityId: sysAccountEntityId,
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refundId: refund.id,
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type: 'refund',
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}
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}, {});
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d = delta;
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}
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let cnt = 2;
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if (refundLoss || d) {
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// 如果有退回或者要缴纳的税费，进入system相关联的account账户
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const [account] = await context.select('account', {
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data: {
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id: 1,
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},
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filter: {
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entity: 'system',
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entityId: application.systemId,
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},
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}, { dontCollect: true });
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if (d) {
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await context.operate('accountOper', {
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id: await generateNewIdAsync(),
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action: 'create',
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data: {
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id: await generateNewIdAsync(),
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accountId: account.id,
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type: d < 0 ? 'taxRefund' : 'tax',
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totalPlus: -d,
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availPlus: -d,
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entity: 'refund',
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entityId: refund.id,
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},
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}, {});
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}
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cnt++;
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if (refundLoss) {
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assert(refundLoss > 0);
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await context.operate('accountOper', {
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id: await generateNewIdAsync(),
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action: 'create',
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data: {
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id: await generateNewIdAsync(),
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accountId: account.id,
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type: 'earn',
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totalPlus: refundLoss,
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availPlus: refundLoss,
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entity: 'refund',
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entityId: refund.id,
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},
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}, {});
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}
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}
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// 如果有withdraw，尝试去同步withdraw的状态
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if (withdrawId) {
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return cnt + await updateWithdrawState(context, withdrawId);
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}
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return cnt;
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}
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async function failRefunding(context, refundId) {
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const pays = await context.select('pay', {
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data: {
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id: 1,
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price: 1,
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refunded: 1,
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entity: 1,
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entityId: 1,
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iState: 1,
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paid: 1,
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applicationId: 1,
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application: {
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systemId: 1,
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},
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deposit: {
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id: 1,
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accountId: 1,
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},
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refund$pay: {
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$entity: 'refund',
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data: {
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id: 1,
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price: 1,
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loss: 1,
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iState: 1,
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withdrawId: 1,
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},
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filter: {
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id: refundId,
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},
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},
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order: {
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id: 1,
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settled: 1,
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}
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},
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filter: {
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refund$pay: {
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'#sqp': 'in',
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id: refundId,
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},
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}
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}, { forUpdate: true, dontCollect: true });
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assert(pays.length === 1);
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const [pay] = pays;
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const { refunded, refund$pay: refunds, order } = pay;
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assert(refunds.length === 1);
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const [refund] = refunds;
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const { withdrawId } = refund;
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const action = refunded === 0 ? 'stopRefunding' : 'refundPartially';
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await context.operate('pay', {
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id: await generateNewIdAsync(),
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action,
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data: {
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refundable: true,
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},
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filter: {
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id: pay.id,
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}
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}, {});
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// 如果有withdraw，尝试去同步withdraw的状态
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if (withdrawId) {
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return 1 + await updateWithdrawState(context, withdrawId);
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}
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else {
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assert(order);
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// 说明是从order那条线产生的refund，此时要把当时扣除掉的account部分返还
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const accountOpers = await context.select('accountOper', {
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data: {
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id: 1,
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totalPlus: 1,
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availPlus: 1,
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accountId: 1,
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},
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filter: {
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type: 'refund',
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entity: 'refund',
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entityId: refundId,
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},
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}, { dontCollect: true });
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let opersPrice = 0;
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for (const oper of accountOpers) {
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const { totalPlus, availPlus, accountId } = oper;
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assert(totalPlus < 0 && totalPlus === availPlus);
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await context.operate('accountOper', {
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id: await generateNewIdAsync(),
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action: 'create',
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data: {
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id: await generateNewIdAsync(),
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totalPlus: -totalPlus,
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availPlus: -availPlus,
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type: 'refundFailure',
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entity: 'refund',
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entityId: refundId,
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accountId,
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}
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}, {});
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opersPrice += -availPlus;
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}
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//如果refund有accountOper回退order.settled变化
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if (opersPrice > 0) {
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const newSettled = order.settled + opersPrice;
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await context.operate('order', {
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id: await generateNewIdAsync(),
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action: 'update',
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data: {
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settled: newSettled
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},
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filter: {
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id: order.id,
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}
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}, {});
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}
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return 1 + accountOpers.length;
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}
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}
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const triggers = [
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{
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entity: 'refund',
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action: 'create',
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when: 'commit',
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name: '当refund建立时，尝试触发外部退款操作',
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strict: 'makeSure',
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fn: async ({ ids }, context) => {
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assert(ids.length === 1);
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const [refund] = await context.select('refund', {
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data: {
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id: 1,
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price: 1,
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loss: 1,
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pay: {
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id: 1,
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price: 1,
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iState: 1,
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refunded: 1,
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entity: 1,
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entityId: 1,
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applicationId: 1,
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},
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},
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filter: {
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id: ids[0],
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},
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}, {});
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const { id, price, pay } = refund;
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const { price: payPrice, refunded, entity, entityId, applicationId } = pay;
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const payClazz = await getPayClazz(entity, entityId, context);
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// 若对应entity的账户里钱不够，则不发起退款
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const accountEntity = getAccountEntity(entity);
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if (entity !== 'account') {
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const accountAmount = await payClazz.getAccountAmount(context);
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if (accountAmount < price) {
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return;
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}
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}
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const data = await payClazz.refund(refund, context);
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if (data) {
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assert(data.externalId);
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const closeFn = context.openRootMode();
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await context.operate('refund', {
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id: await generateNewIdAsync(),
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data,
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action: 'update',
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filter: {
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id,
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}
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}, { dontCollect: true });
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closeFn();
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}
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return;
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},
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},
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{
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entity: 'refund',
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action: 'succeed',
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when: 'after',
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asRoot: true,
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name: '退款成功时，更新对应的pay状态以及对应的withdraw状态',
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fn: async ({ operation }, context) => {
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const { filter } = operation;
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const refundId = filter?.id;
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assert(typeof refundId === 'string');
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return succeedRefunding(context, refundId);
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}
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},
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{
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entity: 'refund',
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action: 'fail',
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when: 'after',
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asRoot: true,
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name: '退款失败时，更新对应的pay状态以及对应的withdraw状态',
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fn: async ({ operation }, context) => {
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const { filter } = operation;
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const refundId = filter?.id;
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assert(typeof refundId === 'string');
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return failRefunding(context, refundId);
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}
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},
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{
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entity: 'refund',
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name: '当发起退款时，置pay的状态并做相应检查',
|
||
action: 'create',
|
||
asRoot: true,
|
||
when: 'before',
|
||
fn: async ({ operation }, context) => {
|
||
const { data } = operation;
|
||
assert(!(data instanceof Array));
|
||
await startRefunding(context, data);
|
||
return 1;
|
||
}
|
||
},
|
||
];
|
||
export default triggers;
|