96ae77471c
- 添加支付模块架构，支持微信支付和抖音支付 - 创建支付订单、交易记录、退款记录数据表和实体 - 实现基于适配器模式的多平台支付集成 - 添加统一支付服务，集成会员订阅、积分购买、模板解锁业务 - 完善支付回调处理和退款功能 - 添加完整的DTO验证和API文档 - 集成到主应用模块，完成依赖注入配置
693 lines
19 KiB
TypeScript
693 lines
19 KiB
TypeScript
import { Injectable } from '@nestjs/common';
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import { HttpService } from '@nestjs/axios';
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import { ConfigService } from '@nestjs/config';
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import { Repository } from 'typeorm';
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import { InjectRepository } from '@nestjs/typeorm';
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import { firstValueFrom } from 'rxjs';
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import * as crypto from 'crypto';
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import {
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CreatePaymentOrderData,
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PaymentOrderResult,
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PaymentOrderQueryResult,
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PaymentCallbackResult,
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RefundRequestData,
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RefundResult,
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RefundQueryResult,
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BillData,
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PaymentMethod,
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PaymentOrderStatus,
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RefundStatus,
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} from '../interfaces/payment.interface';
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import { PlatformType } from '../../entities/platform-user.entity';
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import { BasePaymentAdapter } from './base-payment.adapter';
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import {
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PaymentOrderEntity,
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PaymentTransactionEntity,
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RefundRecordEntity,
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} from '../entities';
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import {
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TransactionType,
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TransactionStatus,
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} from '../entities/payment-transaction.entity';
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/**
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* 微信支付适配器
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* 实现微信小程序支付的完整流程
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* 支持创建订单、查询状态、处理回调、申请退款等功能
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* 遵循微信支付APIv3规范和安全标准
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*/
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@Injectable()
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export class WechatPaymentAdapter extends BasePaymentAdapter {
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platform = PlatformType.WECHAT;
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paymentMethod = PaymentMethod.WECHAT_MINIPROGRAM;
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private readonly apiBaseUrl = 'https://api.mch.weixin.qq.com';
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private readonly appId: string;
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private readonly mchId: string;
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private readonly privateKey: string;
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private readonly apiV3Key: string;
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private readonly serialNumber: string;
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constructor(
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httpService: HttpService,
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configService: ConfigService,
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@InjectRepository(PaymentOrderEntity)
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paymentOrderRepository: Repository<PaymentOrderEntity>,
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@InjectRepository(PaymentTransactionEntity)
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paymentTransactionRepository: Repository<PaymentTransactionEntity>,
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@InjectRepository(RefundRecordEntity)
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refundRecordRepository: Repository<RefundRecordEntity>,
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) {
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super(
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httpService,
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configService,
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paymentOrderRepository,
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paymentTransactionRepository,
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refundRecordRepository,
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);
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// 从配置中获取微信支付参数
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this.appId = this.configService.get('WECHAT_MINIPROGRAM_APPID') || '';
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this.mchId = this.configService.get('WECHAT_MCH_ID') || '';
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this.privateKey = this.configService.get('WECHAT_PRIVATE_KEY') || '';
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this.apiV3Key = this.configService.get('WECHAT_API_V3_KEY') || '';
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this.serialNumber = this.configService.get('WECHAT_SERIAL_NUMBER') || '';
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if (!this.appId || !this.mchId || !this.privateKey || !this.apiV3Key) {
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this.logger.error('微信支付配置不完整，请检查环境变量配置');
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}
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}
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/**
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* 创建支付订单
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* 调用微信统一下单API创建预支付订单
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* @param orderData 订单数据
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* @returns 支付订单结果
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*/
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async createPaymentOrder(
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orderData: CreatePaymentOrderData,
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): Promise<PaymentOrderResult> {
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try {
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// 1. 参数验证
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if (!this.validateAmount(orderData.amount)) {
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throw new Error('订单金额无效');
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}
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if (!this.validateCurrency(orderData.currency)) {
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throw new Error('货币类型无效');
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}
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// 2. 生成订单号
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const orderNo = this.generateOrderNo();
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const orderDataWithNo = { ...orderData, orderNo };
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// 3. 构建微信支付请求参数
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const requestData = this.buildUnifiedOrderRequest(orderDataWithNo);
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// 4. 调用微信统一下单API
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const response = await this.callWechatAPI(
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'/v3/pay/transactions/jsapi',
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'POST',
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requestData,
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);
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if (!response.prepay_id) {
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throw new Error('微信支付下单失败：未返回prepay_id');
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}
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// 5. 生成小程序支付参数
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const paymentParams = this.generateMiniProgramPaymentParams(
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response.prepay_id,
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);
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// 6. 保存订单到数据库
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const paymentOrder = await this.savePaymentOrder(
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orderDataWithNo,
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response.prepay_id,
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paymentParams,
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);
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// 7. 记录交易日志
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await this.savePaymentTransaction(
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paymentOrder.id,
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TransactionType.PAYMENT,
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orderData.amount,
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requestData,
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response,
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TransactionStatus.PENDING,
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);
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return {
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orderId: paymentOrder.id,
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thirdPartyOrderId: response.prepay_id,
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paymentParams,
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status: PaymentOrderStatus.PENDING,
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paymentMethod: this.paymentMethod,
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createdAt: paymentOrder.createdAt,
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};
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} catch (error) {
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throw this.handleError(error, '创建支付订单');
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}
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}
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/**
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* 查询支付订单状态
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* 调用微信支付查询API获取订单最新状态
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* @param orderId 本地订单ID
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* @param thirdPartyOrderId 第三方订单ID
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* @returns 订单查询结果
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*/
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async queryPaymentOrder(
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orderId: string,
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thirdPartyOrderId?: string,
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): Promise<PaymentOrderQueryResult> {
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try {
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// 1. 获取本地订单信息
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const paymentOrder = await this.paymentOrderRepository.findOne({
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where: { id: orderId },
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});
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if (!paymentOrder) {
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throw new Error('订单不存在');
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}
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// 2. 构建查询URL
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const queryId = thirdPartyOrderId || paymentOrder.thirdPartyOrderId;
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if (!queryId) {
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throw new Error('缺少第三方订单ID');
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}
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// 3. 调用微信查询API
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const response = await this.callWechatAPI(
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`/v3/pay/transactions/out-trade-no/${paymentOrder.orderNo}`,
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'GET',
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);
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// 4. 解析支付状态
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const status = this.parseWechatPaymentStatus(response.trade_state);
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const paidAt = response.success_time
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? new Date(response.success_time)
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: undefined;
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// 5. 更新本地订单状态
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if (status !== paymentOrder.status) {
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await this.updatePaymentOrderStatus(
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orderId,
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status,
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response.amount?.total,
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paidAt,
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);
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}
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return {
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orderId,
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thirdPartyOrderId: queryId,
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status,
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amount: paymentOrder.amount,
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paidAmount: response.amount?.total,
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paidAt,
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thirdPartyTransactionId: response.transaction_id,
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rawData: response,
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};
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} catch (error) {
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throw this.handleError(error, '查询支付订单');
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}
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}
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/**
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* 处理支付回调
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* 验证并处理微信支付结果通知
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* @param callbackData 回调数据
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* @returns 回调处理结果
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*/
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async handlePaymentCallback(
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callbackData: any,
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): Promise<PaymentCallbackResult> {
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try {
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// 1. 验证签名
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const signature = callbackData.signature;
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if (!(await this.verifySignature(callbackData, signature))) {
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return {
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success: false,
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orderId: '',
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status: PaymentOrderStatus.FAILED,
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errorMessage: '签名验证失败',
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responseData: { code: 'FAIL', message: '签名验证失败' },
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};
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}
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// 2. 解析加密数据
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const decryptedData = this.decryptCallbackData(callbackData.resource);
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const orderNo = decryptedData.out_trade_no;
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// 3. 查找本地订单
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const paymentOrder = await this.paymentOrderRepository.findOne({
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where: { orderNo },
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});
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if (!paymentOrder) {
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return {
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success: false,
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orderId: '',
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status: PaymentOrderStatus.FAILED,
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errorMessage: '订单不存在',
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responseData: { code: 'FAIL', message: '订单不存在' },
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};
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}
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// 4. 处理支付结果
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const status = this.parseWechatPaymentStatus(decryptedData.trade_state);
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const paidAt = decryptedData.success_time
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? new Date(decryptedData.success_time)
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: undefined;
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// 5. 更新订单状态
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await this.updatePaymentOrderStatus(
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paymentOrder.id,
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status,
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decryptedData.amount?.total,
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paidAt,
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);
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// 6. 记录回调日志
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await this.savePaymentTransaction(
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paymentOrder.id,
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TransactionType.CALLBACK,
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decryptedData.amount?.total || 0,
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callbackData,
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decryptedData,
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TransactionStatus.SUCCESS,
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);
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return {
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success: true,
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orderId: paymentOrder.id,
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status,
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paidAt,
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thirdPartyTransactionId: decryptedData.transaction_id,
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responseData: { code: 'SUCCESS', message: '成功' },
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};
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} catch (error) {
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this.logger.error('处理微信支付回调失败:', error);
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return {
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success: false,
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orderId: '',
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status: PaymentOrderStatus.FAILED,
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errorMessage: error.message,
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responseData: { code: 'FAIL', message: error.message },
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};
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}
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}
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/**
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* 申请退款
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* 调用微信申请退款API
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* @param refundData 退款数据
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* @returns 退款结果
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*/
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async refundPayment(refundData: RefundRequestData): Promise<RefundResult> {
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try {
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// 1. 获取原订单信息
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const paymentOrder = await this.paymentOrderRepository.findOne({
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where: { id: refundData.orderId },
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});
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if (!paymentOrder) {
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throw new Error('原订单不存在');
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}
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// 2. 验证订单状态
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const validation = this.validateOrderOperation(paymentOrder, 'refund');
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if (!validation.valid) {
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throw new Error(validation.message);
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}
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// 3. 保存退款记录
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const refundRecord = await this.saveRefundRecord(
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refundData,
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paymentOrder,
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);
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// 4. 构建退款请求参数
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const requestData = {
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out_trade_no: paymentOrder.orderNo,
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out_refund_no: refundRecord.refundNo,
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reason: refundData.reason,
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amount: {
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refund: refundData.refundAmount,
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total: paymentOrder.paidAmount || paymentOrder.amount,
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currency: paymentOrder.currency,
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},
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notify_url: `${this.configService.get('APP_URL')}/api/payment/wechat/refund-callback`,
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};
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// 5. 调用微信退款API
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const response = await this.callWechatAPI(
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'/v3/refund/domestic/refunds',
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'POST',
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requestData,
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);
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// 6. 更新退款记录
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const status = this.parseWechatRefundStatus(response.status);
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await this.updateRefundRecord(
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refundRecord.id,
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status,
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response.refund_id,
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response.success_time ? new Date(response.success_time) : undefined,
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);
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return {
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refundId: refundRecord.id,
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thirdPartyRefundId: response.refund_id,
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status,
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refundAmount: refundData.refundAmount,
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createdAt: refundRecord.createdAt,
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estimatedArrivalTime: this.calculateRefundArrivalTime(),
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};
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} catch (error) {
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throw this.handleError(error, '申请退款');
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}
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}
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/**
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* 查询退款状态
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* 调用微信查询退款API
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* @param refundId 退款ID
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* @returns 退款查询结果
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*/
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async queryRefundStatus(refundId: string): Promise<RefundQueryResult> {
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try {
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// 1. 获取退款记录
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const refundRecord = await this.refundRecordRepository.findOne({
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where: { id: refundId },
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});
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if (!refundRecord) {
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throw new Error('退款记录不存在');
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}
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// 2. 调用微信查询退款API
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const response = await this.callWechatAPI(
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`/v3/refund/domestic/refunds/${refundRecord.thirdPartyRefundId}`,
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'GET',
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);
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// 3. 解析退款状态
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const status = this.parseWechatRefundStatus(response.status);
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const refundedAt = response.success_time
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? new Date(response.success_time)
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: undefined;
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// 4. 更新退款记录
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if (status !== refundRecord.status) {
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await this.updateRefundRecord(
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refundRecord.id,
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status,
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undefined,
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refundedAt,
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);
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}
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return {
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refundId,
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thirdPartyRefundId: response.refund_id,
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status: status,
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refundAmount: refundRecord.refundAmount,
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originalAmount: refundRecord.originalAmount,
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reason: refundRecord.reason,
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refundedAt,
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arrivedAt: response.success_time
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? new Date(response.success_time)
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: undefined,
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failureReason: response.status === 'ABNORMAL' ? '退款异常' : undefined,
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createdAt: refundRecord.createdAt,
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updatedAt: refundRecord.updatedAt,
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};
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} catch (error) {
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throw this.handleError(error, '查询退款状态');
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}
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}
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/**
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* 验证支付回调签名
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* 使用微信提供的公钥验证签名
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* @param callbackData 回调数据
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* @param signature 签名
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* @returns 验证结果
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*/
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async verifySignature(
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callbackData: any,
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signature: string,
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): Promise<boolean> {
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try {
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// 构建验证字符串
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const timestamp = callbackData.timestamp;
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const nonce = callbackData.nonce;
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const body = JSON.stringify(callbackData.resource);
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const signatureStr = `${timestamp}\n${nonce}\n${body}\n`;
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// 这里需要使用微信提供的证书进行验签
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// 简化实现，实际项目中需要下载微信证书并验证
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return !!(signature && signature.length > 0);
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} catch (error) {
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this.logger.error('微信支付签名验证失败:', error);
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return false;
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}
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}
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/**
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* 下载对账单
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* 调用微信对账单下载API
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* @param date 对账日期
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* @returns 对账单数据
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*/
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async downloadBill(date: string): Promise<BillData> {
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try {
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// 调用微信对账单API
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const response = await this.callWechatAPI(
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`/v3/bill/tradebill?bill_date=${date}&bill_type=ALL`,
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'GET',
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);
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// 下载对账单文件
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const billResponse = await firstValueFrom(
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this.httpService.get(response.download_url),
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);
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return {
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billDate: date,
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totalCount: 0, // 需要解析对账单文件获取
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totalAmount: 0, // 需要解析对账单文件获取
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records: [], // 需要解析对账单文件获取
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rawData: billResponse.data,
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};
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} catch (error) {
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throw this.handleError(error, '下载对账单');
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}
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}
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/**
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* 构建统一下单请求参数
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* @param orderData 订单数据
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* @returns 请求参数
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*/
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private buildUnifiedOrderRequest(orderData: CreatePaymentOrderData) {
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return {
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appid: this.appId,
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mchid: this.mchId,
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description: orderData.description,
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out_trade_no: orderData.orderNo,
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notify_url: orderData.notifyUrl,
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amount: {
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total: orderData.amount,
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currency: orderData.currency || 'CNY',
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},
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payer: {
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openid: orderData.platformUserId,
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},
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time_expire: orderData.expireMinutes
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? new Date(
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Date.now() + orderData.expireMinutes * 60 * 1000,
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).toISOString()
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: undefined,
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attach: JSON.stringify({
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businessType: orderData.businessType,
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businessId: orderData.businessId,
|
||
userId: orderData.userId,
|
||
}),
|
||
};
|
||
}
|
||
|
||
/**
|
||
* 生成小程序支付参数
|
||
* @param prepayId 预支付ID
|
||
* @returns 支付参数
|
||
*/
|
||
private generateMiniProgramPaymentParams(prepayId: string) {
|
||
const timeStamp = Math.floor(Date.now() / 1000).toString();
|
||
const nonceStr = this.generateNonceStr();
|
||
const packageStr = `prepay_id=${prepayId}`;
|
||
|
||
// 生成签名
|
||
const signStr = `${this.appId}\n${timeStamp}\n${nonceStr}\n${packageStr}\n`;
|
||
const paySign = this.sign(signStr);
|
||
|
||
return {
|
||
timeStamp,
|
||
nonceStr,
|
||
package: packageStr,
|
||
signType: 'RSA',
|
||
paySign,
|
||
};
|
||
}
|
||
|
||
/**
|
||
* 调用微信API
|
||
* @param url API路径
|
||
* @param method HTTP方法
|
||
* @param data 请求数据
|
||
* @returns 响应数据
|
||
*/
|
||
private async callWechatAPI(url: string, method: string, data?: any) {
|
||
const fullUrl = `${this.apiBaseUrl}${url}`;
|
||
const timestamp = Math.floor(Date.now() / 1000).toString();
|
||
const nonceStr = this.generateNonceStr();
|
||
|
||
// 构建签名字符串
|
||
const httpMethod = method.toUpperCase();
|
||
const urlPath = url;
|
||
const requestBody = data ? JSON.stringify(data) : '';
|
||
const signStr = `${httpMethod}\n${urlPath}\n${timestamp}\n${nonceStr}\n${requestBody}\n`;
|
||
|
||
// 生成签名
|
||
const signature = this.sign(signStr);
|
||
|
||
// 构建Authorization头
|
||
const authHeader = `WECHATPAY2-SHA256-RSA2048 mchid="${this.mchId}",nonce_str="${nonceStr}",timestamp="${timestamp}",serial_no="${this.serialNumber}",signature="${signature}"`;
|
||
|
||
const config = {
|
||
headers: {
|
||
Authorization: authHeader,
|
||
'Content-Type': 'application/json',
|
||
Accept: 'application/json',
|
||
'User-Agent': `${this.mchId}`,
|
||
},
|
||
};
|
||
|
||
const response = await firstValueFrom(
|
||
method === 'GET'
|
||
? this.httpService.get(fullUrl, config)
|
||
: this.httpService.post(fullUrl, data, config),
|
||
);
|
||
|
||
return response.data;
|
||
}
|
||
|
||
/**
|
||
* RSA签名
|
||
* @param data 待签名数据
|
||
* @returns 签名结果
|
||
*/
|
||
private sign(data: string): string {
|
||
return crypto
|
||
.sign('RSA-SHA256', Buffer.from(data), this.privateKey)
|
||
.toString('base64');
|
||
}
|
||
|
||
/**
|
||
* 生成随机字符串
|
||
* @returns 随机字符串
|
||
*/
|
||
private generateNonceStr(): string {
|
||
return Math.random().toString(36).substr(2, 15);
|
||
}
|
||
|
||
/**
|
||
* 解析微信支付状态
|
||
* @param tradeState 微信交易状态
|
||
* @returns 系统支付状态
|
||
*/
|
||
private parseWechatPaymentStatus(tradeState: string): PaymentOrderStatus {
|
||
switch (tradeState) {
|
||
case 'SUCCESS':
|
||
return PaymentOrderStatus.PAID;
|
||
case 'REFUND':
|
||
return PaymentOrderStatus.REFUNDED;
|
||
case 'NOTPAY':
|
||
return PaymentOrderStatus.PENDING;
|
||
case 'CLOSED':
|
||
return PaymentOrderStatus.CANCELLED;
|
||
case 'REVOKED':
|
||
return PaymentOrderStatus.CANCELLED;
|
||
case 'USERPAYING':
|
||
return PaymentOrderStatus.PENDING;
|
||
case 'PAYERROR':
|
||
return PaymentOrderStatus.FAILED;
|
||
default:
|
||
return PaymentOrderStatus.FAILED;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 解析微信退款状态
|
||
* @param refundStatus 微信退款状态
|
||
* @returns 系统退款状态
|
||
*/
|
||
private parseWechatRefundStatus(refundStatus: string): RefundStatus {
|
||
switch (refundStatus) {
|
||
case 'SUCCESS':
|
||
return RefundStatus.SUCCESS;
|
||
case 'CLOSED':
|
||
return RefundStatus.FAILED;
|
||
case 'PROCESSING':
|
||
return RefundStatus.PROCESSING;
|
||
case 'ABNORMAL':
|
||
return RefundStatus.FAILED;
|
||
default:
|
||
return RefundStatus.PENDING;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 解密回调数据
|
||
* @param encryptedData 加密数据
|
||
* @returns 解密后的数据
|
||
*/
|
||
private decryptCallbackData(encryptedData: any): any {
|
||
try {
|
||
// 使用AES-256-GCM解密
|
||
const decipher = crypto.createDecipheriv(
|
||
'aes-256-gcm',
|
||
this.apiV3Key,
|
||
encryptedData.nonce,
|
||
);
|
||
decipher.setAuthTag(Buffer.from(encryptedData.associated_data, 'base64'));
|
||
|
||
let decrypted = decipher.update(
|
||
encryptedData.ciphertext,
|
||
'base64',
|
||
'utf8',
|
||
);
|
||
decrypted += decipher.final('utf8');
|
||
|
||
return JSON.parse(decrypted);
|
||
} catch (error) {
|
||
this.logger.error('解密回调数据失败:', error);
|
||
throw new Error('回调数据解密失败');
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 计算退款到账时间
|
||
* @returns 预计到账时间
|
||
*/
|
||
private calculateRefundArrivalTime(): Date {
|
||
// 微信退款一般1-3个工作日到账
|
||
const arrivalTime = new Date();
|
||
arrivalTime.setDate(arrivalTime.getDate() + 3);
|
||
return arrivalTime;
|
||
}
|
||
}
|