add epay route support

src/.env.example

@@ -64,3 +64,8 @@ tron_grid_api_key=
 solana_rpc_url=
 
 ethereum_ws_url=wss://ethereum.publicnode.com
+
+
+# epay
+epay_pid=
+epay_key=

src/config/config.go

@@ -340,3 +340,11 @@ func GetSolanaRpcUrl() string {
 func GetEthereumWsUrl() string {
 	return strings.TrimSpace(viper.GetString("ethereum_ws_url"))
 }
+
+func GetEpayPid() int {
+	return viper.GetInt("epay_pid")
+}
+
+func GetEpayKey() string {
+	return viper.GetString("epay_key")
+}

src/controller/comm/order_controller.go

@@ -1,6 +1,9 @@
 package comm
 
 import (
+	"fmt"
+	"log"
+
 	"github.com/assimon/luuu/model/request"
 	"github.com/assimon/luuu/model/service"
 	"github.com/assimon/luuu/util/constant"
@@ -22,3 +25,29 @@ func (c *BaseCommController) CreateTransaction(ctx echo.Context) (err error) {
 	}
 	return c.SucJson(ctx, resp)
 }
+
+func (c *BaseCommController) CreateTransactionAndRedirect(ctx echo.Context) (err error) {
+	req := new(request.CreateTransactionRequest)
+	if err = ctx.Bind(req); err != nil {
+		log.Println("bind request error:", err)
+		return c.FailJson(ctx, constant.ParamsMarshalErr)
+	}
+	if err = c.ValidateStruct(ctx, req); err != nil {
+		log.Println("validate request error:", err)
+		return c.FailJson(ctx, err)
+	}
+	resp, err := service.CreateTransaction(req)
+	if err != nil {
+		log.Println("create transaction error:", err)
+		return c.FailJson(ctx, err)
+	}
+
+	fmt.Printf("create transaction response: %+v\n", resp)
+
+	tradeID := resp.TradeId
+
+	ctx.Redirect(302, "/pay/checkout-counter/"+tradeID)
+
+	return nil
+
+}

src/model/mdb/orders_mdb.go

@@ -8,9 +8,13 @@ const (
 	CallBackConfirmNo = 2
 )
 
+const (
+	PaymentTypeEpay = "Epay"
+)
+
 type Orders struct {
 	TradeId            string  `gorm:"column:trade_id;uniqueIndex:orders_trade_id_uindex" json:"trade_id"`
-	OrderId            string  `gorm:"column:order_id;uniqueIndex:orders_order_id_uindex" json:"order_id"`
+	OrderId            string  `gorm:"column:order_id;uniqueIndex:orders_order_id_uindex" json:"order_id"` // the order id is generated by client, and will notify client when order is paid
 	BlockTransactionId string  `gorm:"index:orders_block_transaction_id_index;column:block_transaction_id" json:"block_transaction_id"`
 	Amount             float64 `gorm:"column:amount" json:"amount"`
 	Currency           string  `gorm:"column:currency" json:"currency"`
@@ -21,8 +25,10 @@ type Orders struct {
 	Status             int     `gorm:"column:status;default:1" json:"status"`
 	NotifyUrl          string  `gorm:"column:notify_url" json:"notify_url"`
 	RedirectUrl        string  `gorm:"column:redirect_url" json:"redirect_url"`
+	Name               string  `gorm:"column:name" json:"name"`
 	CallbackNum        int     `gorm:"column:callback_num;default:0" json:"callback_num"`
 	CallBackConfirm    int     `gorm:"column:callback_confirm;default:2" json:"callback_confirm"`
+	PaymentType        string  `gorm:"column:payment_type" json:"payment_type"`
 	BaseModel
 }
 

src/model/request/order_request.go

@@ -12,6 +12,8 @@ type CreateTransactionRequest struct {
 	NotifyUrl   string  `json:"notify_url" validate:"required"`
 	Signature   string  `json:"signature"  validate:"required"`
 	RedirectUrl string  `json:"redirect_url"`
+	Name        string  `json:"name"`
+	PaymentType string  `json:"payment_type"`
 }
 
 func (r CreateTransactionRequest) Translates() map[string]string {

src/model/response/order_response.go

@@ -25,3 +25,16 @@ type OrderNotifyResponse struct {
 	Signature          string  `json:"signature"`            // 签名
 	Status             int     `json:"status"`               //  1：等待支付，2：支付成功，3：已过期
 }
+
+// OrderNotifyResponseEpay epay订单异步回调结构体
+type OrderNotifyResponseEpay struct {
+	PID         int    `json:"pid"`          // 商户ID
+	TradeNo     string `json:"trade_no"`     // 平台订单号
+	OutTradeNo  string `json:"out_trade_no"` // 商户订单号
+	Type        string `json:"type"`         // 订单类型
+	Name        string `json:"name"`         // 商品名称
+	Money       string `json:"money"`        // 订单金额，保留4位小数
+	Sign        string `json:"sign"`         // 签名
+	SignType    string `json:"sign_type"`    // 签名类型 // MD5
+	TradeStatus string `json:"trade_status"` // 订单状态 // only has "TRADE_SUCCESS" for now
+}

src/model/service/order_service.go

@@ -95,6 +95,8 @@ func CreateTransaction(req *request.CreateTransactionRequest) (*response.CreateT
 		Status:         mdb.StatusWaitPay,
 		NotifyUrl:      req.NotifyUrl,
 		RedirectUrl:    req.RedirectUrl,
+		Name:           req.Name,
+		PaymentType:    req.PaymentType,
 	}
 	if err = data.CreateOrderWithTransaction(tx, order); err != nil {
 		tx.Rollback()

src/mq/worker.go

@@ -2,7 +2,10 @@ package mq
 
 import (
 	"errors"
+	"fmt"
+	"io"
 	"net/http"
+	"net/url"
 	"strings"
 	"time"
 
@@ -162,6 +165,54 @@ func processCallback(tradeID string) {
 }
 
 func sendOrderCallback(order *mdb.Orders) error {
+
+	switch order.PaymentType {
+	case mdb.PaymentTypeEpay:
+		// 构造 EPay 标准回调参数
+		notifyData := response.OrderNotifyResponseEpay{
+			PID:        config.GetEpayPid(),
+			TradeNo:    order.TradeId, // epusdt 订单号作为 EPay 平台订单号
+			OutTradeNo: order.OrderId, // 注意：EPay 回调要求商户订单号使用 out_trade_no 参数
+
+			Type:        "alipay",
+			Name:        order.Name,
+			Money:       fmt.Sprintf("%.4f", order.Amount),
+			TradeStatus: "TRADE_SUCCESS",
+		}
+
+		signstr2, err := sign.Get(notifyData, config.GetEpayKey())
+		if err != nil {
+			return err
+		}
+
+		// 使用 form-encoded POST（EPay 标准协议格式）
+		formData := url.Values{
+			"pid":          {fmt.Sprintf("%d", notifyData.PID)},
+			"trade_no":     {notifyData.TradeNo},
+			"out_trade_no": {notifyData.OutTradeNo},
+			"type":         {notifyData.Type},
+			"name":         {notifyData.Name},
+			"money":        {notifyData.Money},
+			"trade_status": {notifyData.TradeStatus},
+			"sign":         {signstr2},
+			"sign_type":    {"MD5"},
+		}
+
+		resp, err := http.PostForm(order.NotifyUrl, formData)
+		if err != nil {
+			return err
+		}
+		defer resp.Body.Close()
+
+		responseBody, err := io.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+
+		fmt.Printf("notify_url response status: %d, body: %s\n", resp.StatusCode, string(responseBody))
+
+	default:
+
 		client := http_client.GetHttpClient()
 		orderResp := response.OrderNotifyResponse{
 			TradeId:            order.TradeId,
@@ -192,6 +243,8 @@ func sendOrderCallback(order *mdb.Orders) error {
 		if string(resp.Body()) != "ok" {
 			return errors.New("not ok")
 		}
+	}
+
 	return nil
 }
 

src/route/router.go

@@ -3,11 +3,17 @@ package route
 import (
 	"bytes"
 	"encoding/json"
+	"fmt"
 	"io"
 	"net/http"
+	"strconv"
 
+	"github.com/assimon/luuu/config"
 	"github.com/assimon/luuu/controller/comm"
 	"github.com/assimon/luuu/middleware"
+	"github.com/assimon/luuu/model/mdb"
+	"github.com/assimon/luuu/util/constant"
+	"github.com/assimon/luuu/util/sign"
 	"github.com/labstack/echo/v4"
 )
 
@@ -49,6 +55,7 @@ func RegisterRoute(e *echo.Echo) {
 			return comm.Ctrl.FailJson(ctx, err)
 		}
 		ctx.Request().Body = io.NopCloser(bytes.NewBuffer(jsonBytes))
+		ctx.Request().ContentLength = int64(len(jsonBytes))
 
 		return comm.Ctrl.CreateTransaction(ctx)
 	}, middleware.CheckApiSign())
@@ -64,4 +71,66 @@ func RegisterRoute(e *echo.Echo) {
 	walletV1.GET("/:id", comm.Ctrl.GetWallet)
 	walletV1.POST("/:id/status", comm.Ctrl.ChangeWalletStatus)
 	walletV1.POST("/:id/delete", comm.Ctrl.DeleteWallet)
+
+	// epay v1 routes
+	epayV1 := paymentRoute.Group("/epay/v1")
+	epayV1.GET("/order/create-transaction/submit.php", func(ctx echo.Context) error {
+		money := ctx.QueryParam("money")
+		name := ctx.QueryParam("name")
+		notifyURL := ctx.QueryParam("notify_url")
+		outTradeNo := ctx.QueryParam("out_trade_no")
+		returnURL := ctx.QueryParam("return_url")
+		signstr := ctx.QueryParam("sign")
+		// signType := ctx.QueryParam("sign_type")
+
+		m := map[string]interface{}{
+			"money":        money,
+			"name":         name,
+			"notify_url":   notifyURL,
+			"out_trade_no": outTradeNo,
+			"pid":          config.GetEpayPid(), // 注意：验签时需要包含 pid 参数
+			"return_url":   returnURL,
+		}
+
+		checkSignature, err := sign.Get(m, config.GetApiAuthToken())
+		if err != nil {
+			return constant.SignatureErr
+		}
+		if checkSignature != signstr {
+			return constant.SignatureErr
+		}
+
+		amountFloat, err := strconv.ParseFloat(money, 64)
+		if err != nil {
+			return comm.Ctrl.FailJson(ctx, fmt.Errorf("invalid money value: %s", money))
+		}
+
+		body := map[string]interface{}{
+			"token":        "usdt",
+			"currency":     "cny",
+			"network":      "tron",
+			"amount":       amountFloat,
+			"notify_url":   notifyURL,
+			"order_id":     outTradeNo,
+			"redirect_url": returnURL,
+			"signature":    signstr,
+			"name":         name,
+			"payment_type": mdb.PaymentTypeEpay,
+		}
+
+		ctx.Set("request_body", body)
+
+		jsonBytes, err := json.Marshal(body)
+		if err != nil {
+			return comm.Ctrl.FailJson(ctx, err)
+		}
+
+		ctx.Request().Body = io.NopCloser(bytes.NewBuffer(jsonBytes))
+		ctx.Request().ContentLength = int64(len(jsonBytes))
+		ctx.Request().Method = http.MethodPost
+		ctx.Request().Header.Set("Content-Type", "application/json")
+
+		return comm.Ctrl.CreateTransactionAndRedirect(ctx)
+
+	})
 }