对接微信支付

2026-07-01 22:41:49 +08:00
parent b78ef8798c
commit ff4622ff6c
14 changed files with 389 additions and 19 deletions
@@ -222,6 +222,87 @@ export class TradeService {
    return this.getOrder(userId, orderId);
  }

+  /** 微信支付回调：幂等更新订单为已支付并发券 */
+  async handlePaySuccess(params: {
+    orderNo: string;
+    transactionId: string;
+    amountFen: number;
+  }) {
+    const order = await this.prisma.order.findUnique({ where: { orderNo: params.orderNo } });
+    if (!order) {
+      throw new NotFoundException('订单不存在');
+    }
+
+    if (order.payStatus === 'PAID') {
+      return { orderId: order.id.toString(), alreadyPaid: true };
+    }
+
+    const expectedFen = Math.round(Number(order.payAmount) * 100);
+    if (params.amountFen > 0 && params.amountFen !== expectedFen) {
+      throw new BadRequestException('支付金额与订单不符');
+    }
+
+    const existingLog = await this.prisma.logThirdParty.findFirst({
+      where: {
+        provider: 'WECHAT_PAY',
+        externalNo: params.transactionId,
+        status: 'SUCCESS',
+      },
+    });
+    if (existingLog) {
+      return { orderId: order.id.toString(), alreadyPaid: true };
+    }
+
+    const now = new Date();
+    await this.prisma.$transaction(async (tx) => {
+      const current = await tx.order.findUnique({ where: { id: order.id } });
+      if (!current || current.payStatus === 'PAID') return;
+
+      await tx.order.update({
+        where: { id: order.id },
+        data: {
+          status: 'PENDING_SHIP',
+          payStatus: 'PAID',
+          paidAt: now,
+          payExternalNo: params.transactionId,
+        },
+      });
+      await tx.logThirdParty.create({
+        data: {
+          provider: 'WECHAT_PAY',
+          scene: 'ORDER_PAY',
+          refType: 'ORDER',
+          refId: order.id,
+          externalNo: params.transactionId,
+          amount: order.payAmount,
+          status: 'SUCCESS',
+        },
+      });
+      await tx.commonEvent.create({
+        data: buildOrderStatusEvent({
+          orderId: order.id,
+          fromStatus: 'PENDING_PAY',
+          toStatus: 'PENDING_SHIP',
+          operator: 'WECHAT_PAY',
+        }),
+      });
+      const delivery = await tx.orderDelivery.findUnique({ where: { orderId: order.id } });
+      if (!delivery) {
+        await tx.orderDelivery.create({
+          data: { orderId: order.id, provider: 'MANUAL' },
+        });
+      }
+    });
+
+    const refreshed = await this.prisma.order.findUnique({ where: { id: order.id } });
+    if (refreshed?.payStatus === 'PAID') {
+      await this.benefitService.grantOnOrderPaid(order.id);
+      await this.deliveryProvider.scheduleAutoAdvance(order.id);
+    }
+
+    return { orderId: order.id.toString(), alreadyPaid: false };
+  }
+
  async listOrders(userId: bigint, tab = 'all', page = 1, pageSize = 20) {
    const statuses = orderTabToStatuses(tab);
    const where = {