fix: update payment method handling in topup controller

- Refactored payment method validation to check against available methods.
- Changed payment method types from "zfb" to "alipay" and "wx" to "wxpay" for consistency.
- Updated the purchase request to use the validated payment method directly.

controller/topup.go

@@ -97,14 +97,12 @@ func RequestEpay(c *gin.Context) {
 		c.JSON(200, gin.H{"message": "error", "data": "充值金额过低"})
 		return
 	}
-	payType := "wxpay"
+
-	if req.PaymentMethod == "zfb" {
+	if !setting.ContainsPayMethod(req.PaymentMethod) {
-		payType = "alipay"
+		c.JSON(200, gin.H{"message": "error", "data": "支付方式不存在"})
-	}
+		return
-	if req.PaymentMethod == "wx" {
-		req.PaymentMethod = "wxpay"
-		payType = "wxpay"
 	}
+
 	callBackAddress := service.GetCallbackAddress()
 	returnUrl, _ := url.Parse(setting.ServerAddress + "/console/log")
 	notifyUrl, _ := url.Parse(callBackAddress + "/api/user/epay/notify")
@@ -116,7 +114,7 @@ func RequestEpay(c *gin.Context) {
 		return
 	}
 	uri, params, err := client.Purchase(&epay.PurchaseArgs{
-		Type:           payType,
+		Type:           req.PaymentMethod,
 		ServiceTradeNo: tradeNo,
 		Name:           fmt.Sprintf("TUC%d", req.Amount),
 		Money:          strconv.FormatFloat(payMoney, 'f', 2, 64),

setting/payment.go

@@ -13,12 +13,12 @@ var PayMethods = []map[string]string{
 	{
 		"name":  "支付宝",
 		"color": "rgba(var(--semi-blue-5), 1)",
-		"type":  "zfb",
+		"type":  "alipay",
 	},
 	{
 		"name":  "微信",
 		"color": "rgba(var(--semi-green-5), 1)",
-		"type":  "wx",
+		"type":  "wxpay",
 	},
 }