让代理充值复用现有网页支付能力

微信按当前 v2/v3 配置分别生成 MWEB/H5 链接，支付宝复用 C 端 WAP 链接，并让可用支付方式基于生效配置判断。

Constraint: 支付链接统一通过 qr_content 返回，由前端渲染二维码；按要求不运行测试

Rejected: 微信 Native 与支付宝当面付 | 会引入非当前商户配置所需的额外产品开通

Confidence: high

Scope-risk: moderate

Directive: 微信 H5/MWEB 二维码仅承诺系统相机或外部浏览器扫码链路

Tested: 相关 Go 包编译通过；gofmt 与 git diff --check 通过

Not-tested: 按用户要求未运行自动化测试及真实支付联调

internal/infrastructure/payment/alipay_wap.go

@@ -0,0 +1,142 @@
+package payment
+
+import (
+	"context"
+	"strconv"
+	"time"
+
+	sdkalipay "github.com/smartwalle/alipay/v3"
+
+	agentrecharge "github.com/break/junhong_cmp_fiber/internal/application/agentrecharge"
+	"github.com/break/junhong_cmp_fiber/internal/infrastructure/integrationlog"
+	"github.com/break/junhong_cmp_fiber/internal/model"
+	alipaypkg "github.com/break/junhong_cmp_fiber/pkg/alipay"
+	"github.com/break/junhong_cmp_fiber/pkg/constants"
+	apperrors "github.com/break/junhong_cmp_fiber/pkg/errors"
+	"go.uber.org/zap"
+)
+
+// AlipayWapAdapter 使用现有 C 端支付宝能力生成 WAP 支付链接并主动查单。
+type AlipayWapAdapter struct {
+	integration *integrationlog.Repository
+	logger      *zap.Logger
+}
+
+// NewAlipayWapAdapter 创建支付宝 WAP 支付适配器。
+func NewAlipayWapAdapter(integration *integrationlog.Repository, logger *zap.Logger) *AlipayWapAdapter {
+	return &AlipayWapAdapter{integration: integration, logger: logger}
+}
+
+// Available 判断配置是否完整支持支付宝 WAP 支付、验签与查单。
+func (a *AlipayWapAdapter) Available(config *model.WechatConfig) bool {
+	return alipayConfigComplete(config, true)
+}
+
+// CreatePaymentURL 使用与 C 端相同的手机网站支付能力生成签名 URL。
+func (a *AlipayWapAdapter) CreatePaymentURL(ctx context.Context, request agentrecharge.OnlinePaymentRequest) (agentrecharge.OnlinePaymentResult, error) {
+	payment := &model.Payment{PaymentNo: request.PaymentNo, Amount: request.Amount, ExpireAt: &request.ExpireAt}
+	payURL, err := alipaypkg.BuildWapPayURL(ctx, request.Config, payment, request.Description)
+	if err != nil {
+		return agentrecharge.OnlinePaymentResult{}, err
+	}
+	return agentrecharge.OnlinePaymentResult{QRContent: payURL}, nil
+}
+
+// Query 查询支付宝 WAP 支付单状态。
+func (a *AlipayWapAdapter) Query(ctx context.Context, request agentrecharge.OnlinePaymentRequest) (agentrecharge.OnlinePaymentQueryResult, error) {
+	client, err := a.queryClient(request.Config)
+	if err != nil {
+		return agentrecharge.OnlinePaymentQueryResult{}, err
+	}
+	attempt, err := a.startAttempt(ctx, request, constants.IntegrationOperationPaymentQuery, request.Config.ID, 0)
+	if err != nil {
+		return agentrecharge.OnlinePaymentQueryResult{}, err
+	}
+	startedAt := time.Now()
+	response, callErr := client.TradeQuery(ctx, sdkalipay.TradeQuery{OutTradeNo: request.PaymentNo})
+	if callErr != nil {
+		return agentrecharge.OnlinePaymentQueryResult{}, a.completeUnknown(ctx, attempt.IntegrationID, startedAt, callErr)
+	}
+	if response == nil || response.IsFailure() {
+		providerCode, providerMessage := "empty_response", "支付宝查单未返回有效响应"
+		if response != nil {
+			providerCode, providerMessage = string(response.Code), response.SubMsg
+		}
+		_, completeErr := a.integration.Complete(ctx, attempt.IntegrationID, integrationlog.Completion{
+			Result: constants.IntegrationResultFailed, ProviderCode: providerCode, ProviderMessage: providerMessage,
+			ResponseSummary: map[string]any{"success": false}, DurationMS: time.Since(startedAt).Milliseconds(),
+		})
+		if completeErr != nil {
+			return agentrecharge.OnlinePaymentQueryResult{}, completeErr
+		}
+		return agentrecharge.OnlinePaymentQueryResult{}, apperrors.New(apperrors.CodeServiceUnavailable, "支付宝查单失败")
+	}
+	result := agentrecharge.OnlinePaymentQueryResult{
+		State: mapAlipayTradeState(response.TradeStatus), ThirdPartyTradeNo: response.TradeNo,
+	}
+	result.Amount, _ = alipaypkg.YuanToFen(response.TotalAmount)
+	if paidAt, parseErr := time.ParseInLocation("2006-01-02 15:04:05", response.SendPayDate, time.Local); parseErr == nil {
+		result.PaidAt = &paidAt
+	}
+	if _, err = a.integration.Complete(ctx, attempt.IntegrationID, integrationlog.Completion{
+		Result: constants.IntegrationResultSuccess, ProviderCode: string(response.TradeStatus),
+		ResponseSummary: map[string]any{"state": result.State, "has_trade_no": result.ThirdPartyTradeNo != ""},
+		DurationMS:      time.Since(startedAt).Milliseconds(),
+	}); err != nil {
+		return agentrecharge.OnlinePaymentQueryResult{}, err
+	}
+	return result, nil
+}
+
+func (a *AlipayWapAdapter) queryClient(config *model.WechatConfig) (*sdkalipay.Client, error) {
+	if !alipayConfigComplete(config, false) {
+		return nil, apperrors.New(apperrors.CodeNoPaymentConfig, "支付宝查单配置不可用")
+	}
+	return alipaypkg.NewClientFromConfig(config)
+}
+
+func alipayConfigComplete(config *model.WechatConfig, requireActive bool) bool {
+	return config != nil && (!requireActive || config.IsActive) && config.AliAppID != "" && config.AliPrivateKey != "" &&
+		config.AliPublicKey != "" && config.AliNotifyURL != ""
+}
+
+func (a *AlipayWapAdapter) startAttempt(ctx context.Context, request agentrecharge.OnlinePaymentRequest, operation string, configID uint, amount int64) (*model.IntegrationLog, error) {
+	resourceID, resourceKey := strconv.FormatUint(uint64(request.PaymentID), 10), request.PaymentNo
+	series := "agent-recharge-payment:" + resourceID + ":" + operation
+	correlationID := request.CorrelationID
+	return a.integration.Start(ctx, integrationlog.Attempt{
+		Provider: constants.IntegrationProviderAlipay, Direction: constants.IntegrationDirectionOutbound,
+		Operation: operation, ResourceType: constants.IntegrationResourceTypeAgentRechargePayment,
+		ResourceID: &resourceID, ResourceKey: &resourceKey, ExternalID: &resourceKey,
+		TriggerSeries: &series, CorrelationID: &correlationID,
+		RequestSummary: map[string]any{"payment_config_id": configID, "amount": amount},
+	})
+}
+
+func (a *AlipayWapAdapter) completeUnknown(ctx context.Context, integrationID string, startedAt time.Time, cause error) error {
+	if a.logger != nil {
+		a.logger.Warn("支付宝支付请求结果未知", zap.String("integration_id", integrationID), zap.Error(cause))
+	}
+	_, err := a.integration.Complete(ctx, integrationID, integrationlog.Completion{
+		Result: constants.IntegrationResultUnknown, ProviderCode: "request_unknown", ProviderMessage: "支付宝支付请求结果未知",
+		ResponseSummary: map[string]any{"success": false}, DurationMS: time.Since(startedAt).Milliseconds(),
+		RecoveryStrategy: "使用原支付单号主动查单，确认不存在或关闭后才允许关闭本地支付单",
+	})
+	if err != nil {
+		return err
+	}
+	return apperrors.Wrap(apperrors.CodeTimeout, cause, "支付宝支付请求结果未知")
+}
+
+func mapAlipayTradeState(state sdkalipay.TradeStatus) string {
+	switch state {
+	case sdkalipay.TradeStatusSuccess, sdkalipay.TradeStatusFinished:
+		return agentrecharge.OnlinePaymentStatePaid
+	case sdkalipay.TradeStatusClosed:
+		return agentrecharge.OnlinePaymentStateClosed
+	case sdkalipay.TradeStatusWaitBuyerPay:
+		return agentrecharge.OnlinePaymentStatePending
+	default:
+		return agentrecharge.OnlinePaymentStateUnknown
+	}
+}