feat(订单): 实现推荐奖励系统支持佣金和赠送天数两种模式

重构推荐奖励处理逻辑，新增支持根据配置选择佣金奖励或赠送天数奖励
修改Discount相关字段类型为float64以支持小数折扣
添加GiftDays配置项控制赠送天数
新增FindActiveSubscribe方法查询用户有效订阅

internal/config/config.go

@@ -203,6 +203,7 @@ type InviteConfig struct {
 	ForcedInvite       bool  `yaml:"ForcedInvite" default:"false"`
 	ReferralPercentage int64 `yaml:"ReferralPercentage" default:"0"`
 	OnlyFirstPurchase  bool  `yaml:"OnlyFirstPurchase" default:"false"`
+	GiftDays           int64 `yaml:"GiftDays" default:"3"`
 }
 
 type Telegram struct {

internal/handler/routes.go

@@ -861,10 +861,10 @@ func RegisterHandlers(router *gin.Engine, serverCtx *svc.ServiceContext) {
 		serverGroupRouter.GET("/user", server.GetServerUserListHandler(serverCtx))
 	}
 
-	serverV2GroupRouter := router.Group("/v2/server")
+	serverGroupRouterV2 := router.Group("/v2/server")
 
 	{
 		// Get Server Protocol Config
-		serverV2GroupRouter.GET("/:server_id", server.QueryServerProtocolConfigHandler(serverCtx))
+		serverGroupRouterV2.GET("/:server_id", server.QueryServerProtocolConfigHandler(serverCtx))
 	}
 }

internal/logic/public/order/getDiscount.go

@@ -3,7 +3,7 @@ package order
 import "github.com/perfect-panel/server/internal/types"
 
 func getDiscount(discounts []types.SubscribeDiscount, inputMonths int64) float64 {
-	var finalDiscount int64 = 100
+	var finalDiscount float64 = 1.0
 
 	for _, discount := range discounts {
 		if inputMonths >= discount.Quantity && discount.Discount < finalDiscount {
@@ -11,5 +11,5 @@ func getDiscount(discounts []types.SubscribeDiscount, inputMonths int64) float64
 		}
 	}
 
-	return float64(finalDiscount) / float64(100)
+	return finalDiscount
 }

internal/logic/public/portal/tool.go

@@ -7,14 +7,14 @@ import (
 )
 
 func getDiscount(discounts []types.SubscribeDiscount, inputMonths int64) float64 {
-	var finalDiscount int64 = 100
+	var finalDiscount float64 = 1.0
 
 	for _, discount := range discounts {
 		if inputMonths >= discount.Quantity && discount.Discount < finalDiscount {
 			finalDiscount = discount.Discount
 		}
 	}
-	return float64(finalDiscount) / float64(100)
+	return finalDiscount
 }
 
 func calculateCoupon(amount int64, couponInfo *coupon.Coupon) int64 {

internal/model/subscribe/subscribe.go

@@ -71,8 +71,8 @@ func (s *Subscribe) BeforeUpdate(tx *gorm.DB) error {
 }
 
 type Discount struct {
-	Months   int64 `json:"months"`
-	Discount int64 `json:"discount"`
+	Months   int64   `json:"months"`
+	Discount float64 `json:"discount"`
 }
 
 type Group struct {

internal/model/user/model.go

@@ -77,6 +77,7 @@ type customUserLogicModel interface {
 	QueryUserSubscribe(ctx context.Context, userId int64, status ...int64) ([]*SubscribeDetails, error)
 	FindOneSubscribeDetailsById(ctx context.Context, id int64) (*SubscribeDetails, error)
 	FindOneUserSubscribe(ctx context.Context, id int64) (*SubscribeDetails, error)
+	FindActiveSubscribe(ctx context.Context, userId int64) (*Subscribe, error)
 	FindUsersSubscribeBySubscribeId(ctx context.Context, subscribeId int64) ([]*Subscribe, error)
 	UpdateUserSubscribeWithTraffic(ctx context.Context, id, download, upload int64, tx ...*gorm.DB) error
 	QueryResisterUserTotalByDate(ctx context.Context, date time.Time) (int64, error)

internal/model/user/subscribe.go

@@ -198,3 +198,24 @@ func (m *defaultUserModel) DeleteSubscribeById(ctx context.Context, id int64, tx
 func (m *defaultUserModel) ClearSubscribeCache(ctx context.Context, data ...*Subscribe) error {
 	return m.ClearSubscribeCacheByModels(ctx, data...)
 }
+
+// FindActiveSubscribe finds the user's active subscription
+func (m *defaultUserModel) FindActiveSubscribe(ctx context.Context, userId int64) (*Subscribe, error) {
+	var data Subscribe
+	err := m.QueryNoCacheCtx(ctx, &data, func(conn *gorm.DB, v interface{}) error {
+		now := time.Now()
+		return conn.Model(&Subscribe{}).
+			Where("user_id = ? AND status = ? AND expire_time > ?", userId, 1, now).
+			Order("expire_time DESC").
+			First(&data).Error
+	})
+	
+	if err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, nil
+		}
+		return nil, err
+	}
+	
+	return &data, nil
+}

internal/types/types.go

@@ -1170,6 +1170,7 @@ type InviteConfig struct {
 	ForcedInvite       bool  `json:"forced_invite"`
 	ReferralPercentage int64 `json:"referral_percentage"`
 	OnlyFirstPurchase  bool  `json:"only_first_purchase"`
+	GiftDays           int64 `json:"gift_days"`
 }
 
 type KickOfflineRequest struct {
@@ -2065,8 +2066,8 @@ type SubscribeConfig struct {
 }
 
 type SubscribeDiscount struct {
-	Quantity int64 `json:"quantity"`
-	Discount int64 `json:"discount"`
+	Quantity int64   `json:"quantity"`
+	Discount float64 `json:"discount"`
 }
 
 type SubscribeGroup struct {