修改网关代码的结构，调整了逻辑，删除了许多无用的代码

gateway/service/base_service.go

@@ -0,0 +1,193 @@
+package service
+
+import (
+	"context"
+	"gateway/conf"
+	"gateway/models/merchant"
+	"gateway/models/order"
+	"gateway/response"
+	"github.com/beego/beego/v2/client/orm"
+	"github.com/beego/beego/v2/core/logs"
+	"strconv"
+	"strings"
+)
+
+//获取商户信息
+func GetMerchantInfo(params map[string]string) *response.PayBaseResp {
+
+	c := new(response.PayBaseResp)
+	c.Params = make(map[string]string)
+	c.Params = params
+
+	merchantInfo := merchant.GetMerchantByPaykey(params["payKey"])
+
+	if merchantInfo.MerchantUid == "" || len(merchantInfo.MerchantUid) == 0 {
+		c.Code = -1
+		c.Msg = "商户不存在，或者paykey有误，请联系管理员"
+	} else if merchantInfo.Status != conf.ACTIVE {
+		c.Code = -1
+		c.Msg = "商户状态已经被冻结或者被删除，请联系管理员！"
+	} else {
+		c.MerchantInfo = merchantInfo
+	}
+
+	return c
+}
+
+func JudgeParams(c *response.PayBaseResp) *response.PayBaseResp {
+	//c.ReturnUrlIsValid()
+	c = OrderIsValid(c)
+	c = NotifyUrlIsValid(c)
+	c = OsTypeIsValid(c)
+	c = PayWayCodeIsValid(c)
+	c = ProductIsValid(c)
+	c = OrderPeriodIsValid(c)
+	//c = IpIsWhite()
+	c = OrderPriceIsValid(c)
+
+	return c
+}
+
+/*
+* 插入支付订单记录和订单利润记录，保证一致性
+ */
+func InsertOrderAndOrderProfit(orderInfo order.OrderInfo, orderProfitInfo order.OrderProfitInfo) bool {
+	o := orm.NewOrm()
+	if err := o.DoTx(func(ctx context.Context, txOrm orm.TxOrmer) error {
+		if _, err := txOrm.Insert(&orderInfo); err != nil {
+			logs.Error("insert orderInfo fail: ", err)
+			return err
+		}
+		if _, err := txOrm.Insert(&orderProfitInfo); err != nil {
+			logs.Error("insert orderProfit fail: ", err)
+			return err
+		}
+
+		return nil
+
+	}); err != nil {
+		return false
+	}
+	return true
+}
+
+/**
+** 判断跳转地址是否符合规则
+ */
+func ReturnUrlIsValid(c *response.PayBaseResp) *response.PayBaseResp {
+	if c.Params["returnUrl"] == "" || len(c.Params["returnUrl"]) == 0 {
+		c.Code = -1
+		c.Msg = "支付成功后跳转地址不能为空"
+	}
+	return c
+}
+
+/**
+** 判断回调地址是否符合规则
+ */
+func NotifyUrlIsValid(c *response.PayBaseResp) *response.PayBaseResp {
+	if c.Params["notifyUrl"] == "" || len(c.Params["notifyUrl"]) == 0 {
+		c.Code = -1
+		c.Msg = "支付成功订单回调地址不能空位"
+	}
+
+	return c
+}
+
+/**
+** 判断设备类型是否符合规则
+ */
+func OsTypeIsValid(c *response.PayBaseResp) *response.PayBaseResp {
+	if c.Params["osType"] == "" || len(c.Params["osType"]) == 0 {
+		c.Code = -1
+		c.Msg = "支付设备系统类型不能为空，默认填写\"1\"即可"
+	}
+
+	return c
+}
+
+/**
+** 判断支付类型字段是否符合规则
+ */
+func PayWayCodeIsValid(c *response.PayBaseResp) *response.PayBaseResp {
+	if c.Params["payWayCode"] == "" || len(c.Params["payWayCode"]) == 0 {
+		c.Code = -1
+		c.Msg = "支付类型字段不能为空"
+		return c
+	}
+
+	if !strings.Contains(c.Params["payWayCode"], "SCAN") {
+		c.Code = -1
+		c.Msg = "扫码支付不支持这种支付类型"
+	} else {
+		scanPayWayCodes := conf.GetScanPayWayCodes()
+		for _, v := range scanPayWayCodes {
+			if c.Params["payWayCode"] == v {
+				c.PayWayCode = strings.Replace(c.Params["payWayCode"], "-", "_", -1)
+				return c
+			}
+		}
+		c.Code = -1
+		c.Msg = "不存在这种支付类型，请仔细阅读对接文档"
+	}
+
+	return c
+}
+
+func ProductIsValid(c *response.PayBaseResp) *response.PayBaseResp {
+	if c.Params["productName"] == "" || len(c.Params["productName"]) == 0 {
+		c.Code = -1
+		c.Msg = "商品描述信息字段不能为空"
+	}
+
+	return c
+}
+
+func OrderPeriodIsValid(c *response.PayBaseResp) *response.PayBaseResp {
+	if c.Params["orderPeriod"] == "" || len(c.Params["orderPeriod"]) == 0 {
+		c.Code = -1
+		c.Msg = "订单过期时间不能为空，默认填写\"1\"即可"
+	}
+
+	return c
+}
+
+//判断订单金额
+func OrderPriceIsValid(c *response.PayBaseResp) *response.PayBaseResp {
+	if c.Params["orderPrice"] == "" || len(c.Params["orderPrice"]) == 0 {
+		c.Code = -1
+		c.Msg = "订单金额不能为空"
+		return c
+	}
+
+	a, err := strconv.ParseFloat(c.Params["orderPrice"], 64)
+	if err != nil {
+		logs.Error("order price is invalid： ", c.Params["orderPrice"])
+		c.Code = -1
+		c.Msg = "订单金额非法"
+	}
+	c.OrderAmount = a
+
+	return c
+}
+
+//判断金额订单号是否为空或者有重复
+func OrderIsValid(c *response.PayBaseResp) *response.PayBaseResp {
+	if c.Params["orderNo"] == "" || len(c.Params["orderNo"]) == 0 {
+		c.Code = -1
+		c.Msg = "商户订单号不能为空"
+		return c
+	}
+	if order.OrderNoIsEixst(c.Params["orderNo"]) {
+		c.Code = -1
+		c.Msg = "商户订单号重复"
+	}
+
+	return c
+}
+
+//判断ip是否在白名单中
+func IpIsWhite() bool {
+	//TODO
+	return true
+}