微信SDK接通

2026-07-01 19:56:44 +08:00
parent a1cbfc7241
commit aea1513836
38 changed files with 1610 additions and 92 deletions
@@ -0,0 +1,41 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { loadAppConfig } from '@dukang/shared-types';
+import { PrismaService } from '../../common/prisma/prisma.module';
+import { WECHAT_PROVIDER } from '../integrations.constants';
+import type { IWechatProvider } from '../wechat/wechat.interface';
+import type { IPayProvider, PayOrderResult } from './pay.interface';
+
+@Injectable()
+export class PayWechatProvider implements IPayProvider {
+  private readonly config = loadAppConfig();
+
+  constructor(
+    private readonly prisma: PrismaService,
+    @Inject(WECHAT_PROVIDER) private readonly wechat: IWechatProvider,
+  ) {}
+
+  async payOrder(orderId: bigint, openId?: string): Promise<PayOrderResult> {
+    if (this.config.mockPay) {
+      return { mode: 'mock', externalNo: `MOCK-${Date.now()}` };
+    }
+    if (!openId) {
+      throw new Error('微信支付需要用户 openId，请先完成微信授权登录');
+    }
+    if (!this.wechat.isEnabled()) {
+      throw new Error('微信能力未启用，请配置 WECHAT_AUTH_ENABLED 与 WX_APP_ID/SECRET');
+    }
+
+    const order = await this.prisma.order.findUnique({ where: { id: orderId } });
+    if (!order) throw new Error('订单不存在');
+
+    const amountFen = Math.round(Number(order.payAmount) * 100);
+    const prepay = await this.wechat.createJsapiPrepay({
+      orderNo: order.orderNo,
+      description: `杜康好客订单 ${order.orderNo}`,
+      amountFen,
+      openId,
+      notifyUrl: process.env.WX_PAY_NOTIFY_URL ?? '',
+    });
+    return { mode: 'jsapi', prepay };
+  }
+}