109 lines
3.6 KiB
Dart
109 lines
3.6 KiB
Dart
import 'dart:async';
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import 'package:fluwx/fluwx.dart' as fluwx;
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import 'package:tobias/tobias.dart' as tobias;
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import '../config/app_config.dart';
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import 'models.dart';
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import 'order_api.dart';
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/// 支付服务抽象：创建订单 + 拉起渠道支付 + 返回支付结果
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abstract class PaymentService {
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/// 支付完成后会通知服务端落授权；成功与否以 [PayResult.success] 为准
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Future<PayResult> pay(Plan plan, PayChannel channel);
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}
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/// 微信支付（fluwx 实现）
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class WechatPayService implements PaymentService {
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WechatPayService({required this.orderApi});
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final OrderApi orderApi;
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@override
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Future<PayResult> pay(Plan plan, PayChannel channel) async {
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assert(channel == PayChannel.wechat);
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final order =
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await orderApi.createOrder(planId: plan.id, channel: channel);
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final p = order.wechatParams;
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final launched = await fluwx.Fluwx().pay(
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which: fluwx.Payment(
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appId: AppConfig.wechatAppId,
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partnerId: p['partnerId'] as String? ?? '',
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prepayId: p['prepayId'] as String? ?? '',
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packageValue: p['packageValue'] as String? ?? 'Sign=WXPay',
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nonceStr: p['nonceStr'] as String? ?? '',
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timestamp: int.tryParse('${p['timeStamp'] ?? p['timestamp']}') ?? 0,
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sign: p['sign'] as String? ?? '',
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),
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);
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if (!launched) {
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return const PayResult(
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success: false, message: '未安装微信或拉起支付失败，请稍后再试');
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}
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// 等待微信回调（errCode == 0 为成功），10s 超时
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final completer = Completer<PayResult>();
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final cancel = fluwx.Fluwx().addSubscriber((response) {
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if (response is! fluwx.WeChatPaymentResponse) return;
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completer.complete(PayResult(
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success: response.isSuccessful,
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message: response.isSuccessful ? null : (response.errStr ?? '微信支付未完成'),
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orderId: order.orderId,
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));
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});
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try {
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final result =
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await completer.future.timeout(const Duration(seconds: 10));
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if (result.success) await orderApi.confirmOrder(order.orderId);
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return result;
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} on TimeoutException {
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return PayResult(
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success: false,
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message: '等待微信支付结果超时，请确认支付状态',
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orderId: order.orderId);
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} finally {
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cancel.cancel();
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}
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}
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}
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/// 支付宝支付（tobias 实现，resultStatus 9000 为成功）
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class AlipayService implements PaymentService {
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AlipayService({required this.orderApi});
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final OrderApi orderApi;
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@override
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Future<PayResult> pay(Plan plan, PayChannel channel) async {
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assert(channel == PayChannel.alipay);
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final order =
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await orderApi.createOrder(planId: plan.id, channel: channel);
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final orderStr = order.alipayOrderStr;
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if (orderStr == null) {
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return const PayResult(success: false, message: '订单缺少支付参数');
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}
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final map = await tobias.Tobias().pay(
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orderStr,
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universalLink: AppConfig.alipayUniversalLink,
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);
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final status = map['resultStatus']?.toString() ?? '';
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final ok = status == '9000';
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if (ok) await orderApi.confirmOrder(order.orderId);
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return PayResult(
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success: ok,
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message: ok ? null : _alipayMessage(status),
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orderId: order.orderId,
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);
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}
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static String _alipayMessage(String status) => switch (status) {
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'8000' => '支付结果确认中，请稍后查看',
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'6001' => '用户取消支付',
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'6002' => '网络异常，支付未完成',
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'6004' => '支付结果未知，请查询订单状态',
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_ => '支付宝支付未完成',
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};
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}
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