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