140 lines
4.3 KiB
Dart
140 lines
4.3 KiB
Dart
import 'dart:async';
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import 'package:fluwx/fluwx.dart';
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import 'package:tobias/tobias.dart';
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import '../core/config/app_config.dart';
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import 'payment_service.dart';
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/// 支付宝/微信原生 SDK 调起封装（《03-接口文档》8.2 pay_params）
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///
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/// 服务端配置了商户密钥时 pay_params 为真实调起参数，此处调起原生 SDK；
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/// 未配置（dev）时服务端返回 dev_mock 占位，调用方应以轮询兜底代替调起。
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enum PayLaunchResult {
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/// 渠道回调成功（仍需以服务端查单为准，避免客户端伪造）
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success,
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/// 用户主动取消
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canceled,
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/// 调起失败（未安装 App / 参数缺失 / SDK 报错）
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failed,
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/// pay_params 无有效调起参数（服务端未配置商户密钥）
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unsupported,
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}
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class PayLauncher {
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PayLauncher._();
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static final _fluwx = Fluwx();
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/// 微信调起等待回调的最长时间
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static const _wechatTimeout = Duration(minutes: 5);
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/// 支付宝调起：order_string 直接交给 SDK
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static Future<PayLaunchResult> launchAlipay(RechargeOrderInfo order) async {
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final orderString = order.payParams['order_string'] as String?;
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if (orderString == null || orderString.isEmpty) {
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return PayLaunchResult.unsupported;
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}
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try {
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final result = await Tobias().pay(orderString);
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return _mapAlipayStatus(result['resultStatus'] as String?);
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} catch (_) {
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return PayLaunchResult.failed;
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}
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}
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/// 微信调起：registerApi → pay → 等待 SDK 回调
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static Future<PayLaunchResult> launchWechat(RechargeOrderInfo order) async {
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final params = order.payParams;
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final appId = params['appid'] as String?;
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final partnerId = params['partnerid'] as String?;
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final prepayId = params['prepayid'] as String?;
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final packageValue = params['package'] as String?;
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final nonceStr = params['noncestr'] as String?;
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final sign = params['sign'] as String?;
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final timestamp = int.tryParse('${params['timestamp']}');
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if (appId == null ||
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appId.isEmpty ||
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partnerId == null ||
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partnerId.isEmpty ||
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prepayId == null ||
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prepayId.isEmpty ||
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packageValue == null ||
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packageValue.isEmpty ||
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nonceStr == null ||
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nonceStr.isEmpty ||
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sign == null ||
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sign.isEmpty ||
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timestamp == null) {
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return PayLaunchResult.unsupported;
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}
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final completer = Completer<PayLaunchResult>();
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final cancelable = _fluwx.addSubscriber((response) {
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if (response is WeChatPaymentResponse && !completer.isCompleted) {
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completer.complete(_mapWechatErrCode(response.errCode));
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}
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});
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try {
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await _fluwx.registerApi(
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appId: appId,
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universalLink: AppConfig.wechatUniversalLink.isEmpty
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? null
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: AppConfig.wechatUniversalLink,
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);
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final sent = await _fluwx.pay(
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which: Payment(
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appId: appId,
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partnerId: partnerId,
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prepayId: prepayId,
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packageValue: packageValue,
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nonceStr: nonceStr,
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timestamp: timestamp,
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sign: sign,
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),
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);
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if (!sent) return PayLaunchResult.failed;
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return await completer.future.timeout(
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_wechatTimeout,
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onTimeout: () => PayLaunchResult.failed,
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);
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} catch (_) {
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return PayLaunchResult.failed;
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} finally {
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cancelable.cancel();
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}
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}
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/// 按支付方式分发（1支付宝 2微信）
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static Future<PayLaunchResult> launch(RechargeOrderInfo order) {
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return switch (order.payMethod) {
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1 => launchAlipay(order),
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2 => launchWechat(order),
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_ => Future.value(PayLaunchResult.unsupported),
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};
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}
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/// 支付宝 resultStatus：9000成功 6001用户取消 8000/8001处理中 其余失败
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static PayLaunchResult _mapAlipayStatus(String? status) {
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return switch (status) {
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'9000' => PayLaunchResult.success,
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'6001' => PayLaunchResult.canceled,
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'8000' || '8001' => PayLaunchResult.success, // 处理中，交由服务端查单确认
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_ => PayLaunchResult.failed,
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};
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}
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/// 微信 errCode：0成功 -2用户取消 其余失败
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static PayLaunchResult _mapWechatErrCode(int? errCode) {
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return switch (errCode) {
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0 => PayLaunchResult.success,
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-2 => PayLaunchResult.canceled,
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_ => PayLaunchResult.failed,
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};
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}
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}
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