247 lines
6.7 KiB
TypeScript
247 lines
6.7 KiB
TypeScript
/**
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* 支付网关工厂 (Payment Gateway Factory)
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* 统一管理所有支付网关，实现工厂模式
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*
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* 作者: 卡若
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* 版本: v4.0
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*/
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import {
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CreateTradeData,
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TradeResult,
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NotifyResult,
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PaymentPlatform,
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PaymentGateway,
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GatewayNotFoundError,
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PaymentMethod
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} from './types';
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/**
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* 抽象支付网关基类
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*/
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export abstract class AbstractGateway {
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protected config: Record<string, unknown>;
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constructor(config: Record<string, unknown> = {}) {
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this.config = config;
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}
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/**
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* 创建交易
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*/
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abstract createTrade(data: CreateTradeData): Promise<TradeResult>;
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/**
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* 验证签名
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*/
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abstract verifySign(data: Record<string, string>): boolean;
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/**
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* 解析回调数据
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*/
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abstract parseNotify(data: string | Record<string, string>): NotifyResult;
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/**
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* 关闭交易
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*/
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abstract closeTrade(tradeSn: string): Promise<boolean>;
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/**
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* 查询交易
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*/
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abstract queryTrade(tradeSn: string): Promise<NotifyResult | null>;
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/**
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* 发起退款
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*/
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abstract refund(tradeSn: string, refundSn: string, amount: number, reason?: string): Promise<boolean>;
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/**
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* 回调成功响应
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*/
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successResponse(): string {
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return 'success';
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}
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/**
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* 回调失败响应
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*/
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failResponse(): string {
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return 'fail';
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}
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}
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// 网关类型映射
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type GatewayClass = new (config: Record<string, unknown>) => AbstractGateway;
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/**
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* 支付网关工厂
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*/
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export class PaymentFactory {
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private static gateways: Map<string, GatewayClass> = new Map();
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/**
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* 注册支付网关
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*/
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static register(name: string, gatewayClass: GatewayClass): void {
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this.gateways.set(name, gatewayClass);
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console.log(`[PaymentFactory] 注册支付网关: ${name}`);
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}
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/**
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* 创建支付网关实例
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* @param gateway 网关名称，格式如 'wechat_jsapi'，会取下划线前的部分
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*/
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static create(gateway: PaymentGateway | string): AbstractGateway {
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const gatewayName = gateway.split('_')[0] as PaymentPlatform;
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const GatewayClass = this.gateways.get(gatewayName);
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if (!GatewayClass) {
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throw new GatewayNotFoundError(gateway);
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}
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const config = this.getGatewayConfig(gatewayName);
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return new GatewayClass(config);
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}
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/**
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* 获取网关配置
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*/
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private static getGatewayConfig(gateway: PaymentPlatform): Record<string, unknown> {
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const configMap: Record<PaymentPlatform, () => Record<string, unknown>> = {
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alipay: () => ({
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// 支付宝新版接口需要 app_id，如果没有配置则使用 pid（旧版兼容）
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appId: process.env.ALIPAY_APP_ID || process.env.ALIPAY_PID || '2088511801157159',
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pid: process.env.ALIPAY_PID || '2088511801157159',
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sellerEmail: process.env.ALIPAY_SELLER_EMAIL || 'zhengzhiqun@vip.qq.com',
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privateKey: process.env.ALIPAY_PRIVATE_KEY || '',
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publicKey: process.env.ALIPAY_PUBLIC_KEY || '',
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md5Key: process.env.ALIPAY_MD5_KEY || 'lz6ey1h3kl9zqkgtjz3avb5gk37wzbrp',
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enabled: process.env.ALIPAY_ENABLED === 'true',
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mode: process.env.ALIPAY_MODE || 'production',
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}),
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wechat: () => ({
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// 微信支付需要使用绑定了支付功能的服务号AppID
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appId: process.env.WECHAT_APPID || 'wx7c0dbf34ddba300d', // 服务号AppID（已绑定商户号）
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appSecret: process.env.WECHAT_APP_SECRET || 'f865ef18c43dfea6cbe3b1f1aebdb82e',
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serviceAppId: process.env.WECHAT_SERVICE_APPID || 'wx7c0dbf34ddba300d',
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serviceSecret: process.env.WECHAT_SERVICE_SECRET || 'f865ef18c43dfea6cbe3b1f1aebdb82e',
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mchId: process.env.WECHAT_MCH_ID || '1318592501',
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mchKey: process.env.WECHAT_MCH_KEY || 'wx3e31b068be59ddc131b068be59ddc2',
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certPath: process.env.WECHAT_CERT_PATH || '',
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keyPath: process.env.WECHAT_KEY_PATH || '',
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enabled: process.env.WECHAT_ENABLED === 'true',
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mode: process.env.WECHAT_MODE || 'production',
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}),
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paypal: () => ({
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clientId: process.env.PAYPAL_CLIENT_ID || '',
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clientSecret: process.env.PAYPAL_CLIENT_SECRET || '',
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mode: process.env.PAYPAL_MODE || 'sandbox',
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enabled: process.env.PAYPAL_ENABLED === 'true',
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}),
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stripe: () => ({
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publicKey: process.env.STRIPE_PUBLIC_KEY || '',
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secretKey: process.env.STRIPE_SECRET_KEY || '',
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webhookSecret: process.env.STRIPE_WEBHOOK_SECRET || '',
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mode: process.env.STRIPE_MODE || 'test',
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enabled: process.env.STRIPE_ENABLED === 'true',
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}),
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usdt: () => ({
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gatewayType: process.env.USDT_GATEWAY_TYPE || 'nowpayments',
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apiKey: process.env.NOWPAYMENTS_API_KEY || '',
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ipnSecret: process.env.NOWPAYMENTS_IPN_SECRET || '',
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enabled: process.env.USDT_ENABLED === 'true',
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}),
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coin: () => ({
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rate: parseInt(process.env.COIN_RATE || '100', 10),
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enabled: process.env.COIN_ENABLED === 'true',
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}),
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};
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return configMap[gateway]?.() || {};
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}
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/**
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* 获取已启用的支付网关列表
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*/
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static getEnabledGateways(): PaymentMethod[] {
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const methods: PaymentMethod[] = [];
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// 支付宝
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if (process.env.ALIPAY_ENABLED === 'true' || true) { // 默认启用
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methods.push({
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gateway: 'alipay_wap',
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name: '支付宝',
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icon: '/icons/alipay.png',
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enabled: true,
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available: true,
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});
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}
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// 微信支付
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if (process.env.WECHAT_ENABLED === 'true' || true) { // 默认启用
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methods.push({
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gateway: 'wechat_native',
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name: '微信支付',
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icon: '/icons/wechat.png',
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enabled: true,
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available: true,
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});
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}
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// PayPal
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if (process.env.PAYPAL_ENABLED === 'true') {
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methods.push({
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gateway: 'paypal',
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name: 'PayPal',
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icon: '/icons/paypal.png',
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enabled: true,
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available: true,
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});
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}
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// Stripe
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if (process.env.STRIPE_ENABLED === 'true') {
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methods.push({
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gateway: 'stripe',
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name: 'Stripe',
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icon: '/icons/stripe.png',
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enabled: true,
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available: true,
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});
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}
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// USDT
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if (process.env.USDT_ENABLED === 'true') {
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methods.push({
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gateway: 'usdt',
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name: 'USDT (TRC20)',
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icon: '/icons/usdt.png',
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enabled: true,
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available: true,
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});
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}
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return methods;
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}
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/**
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* 检查网关是否已注册
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*/
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static hasGateway(name: string): boolean {
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return this.gateways.has(name);
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}
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/**
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* 获取所有已注册的网关名称
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*/
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static getRegisteredGateways(): string[] {
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return Array.from(this.gateways.keys());
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}
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}
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// 导出便捷函数
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export function createPaymentGateway(gateway: PaymentGateway | string): AbstractGateway {
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return PaymentFactory.create(gateway);
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}
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