tianyuan-api-server/apps/sentinel/internal/logic/topup/alitopuplogic.go

package topuplogic

import (
	"context"
	"fmt"
	"github.com/smartwalle/alipay/v3"
	"tianyuan-api/apps/sentinel/internal/model"
	"tianyuan-api/apps/sentinel/internal/svc"
	"tianyuan-api/apps/sentinel/sentinel"
	"tianyuan-api/pkg/generate"

	"github.com/zeromicro/go-zero/core/logx"
)

type AliTopUpLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

func NewAliTopUpLogic(ctx context.Context, svcCtx *svc.ServiceContext) *AliTopUpLogic {
	return &AliTopUpLogic{
		ctx:    ctx,
		svcCtx: svcCtx,
		Logger: logx.WithContext(ctx),
	}
}

func (l *AliTopUpLogic) AliTopUp(in *sentinel.AliTopUpRequest) (*sentinel.AliTopUpResponse, error) {
	if in.Amount > l.svcCtx.Config.TopUp.MaxTopUpAmount {
		return &sentinel.AliTopUpResponse{}, fmt.Errorf("充值金额最大不能超过%d元", l.svcCtx.Config.TopUp.MaxTopUpAmount)
	}
	// 使用从 svcCtx 中获取的支付宝客户端
	client := l.svcCtx.AlipayClient
	outTradeNo := generate.GenerateTransactionID()
	totalAmount := fmt.Sprintf("%.2f", float64(in.Amount))
	// 构造支付请求
	var p = alipay.TradePagePay{
		Trade: alipay.Trade{
			Subject:     l.svcCtx.Config.TopUp.Subject,
			OutTradeNo:  outTradeNo,
			TotalAmount: totalAmount,
			ProductCode: "FAST_INSTANT_TRADE_PAY",
			NotifyURL:   l.svcCtx.Config.TopUp.NotifyURL, // 异步回调通知地址
			ReturnURL:   l.svcCtx.Config.TopUp.ReturnURL, // 支付成功后的跳转地址
		},
	}
	_, inserErr := l.svcCtx.PayOrderModel.Insert(l.ctx, &model.PayOrder{
		UserId:     in.UserId,
		OutTradeNo: outTradeNo,
		Amount:     float64(in.Amount),
	})
	if inserErr != nil {
		return nil, inserErr
	}
	// 生成支付链接
	url, err := client.TradePagePay(p)
	if err != nil {
		return nil, err
	}

	return &sentinel.AliTopUpResponse{
		PayUrl: url.String(),
	}, nil
}