diff --git a/openflare_server/model/auth_source.go b/openflare_server/model/auth_source.go
index 7eba858b..c5715a73 100644
--- a/openflare_server/model/auth_source.go
+++ b/openflare_server/model/auth_source.go
@@ -2,6 +2,7 @@ package model
 
 import (
 	"errors"
+	"openflare/utils"
 	"regexp"
 	"strings"
 	"time"
@@ -56,14 +57,17 @@ type ExternalAccountView struct {
 }
 
 func (source *AuthSource) Normalize() {
-	source.Name = strings.TrimSpace(source.Name)
-	source.Type = strings.TrimSpace(strings.ToLower(source.Type))
-	source.DisplayName = strings.TrimSpace(source.DisplayName)
-	source.ClientID = strings.TrimSpace(source.ClientID)
-	source.ClientSecret = strings.TrimSpace(source.ClientSecret)
-	source.OpenIDDiscoveryURL = strings.TrimSpace(source.OpenIDDiscoveryURL)
-	source.Scopes = strings.TrimSpace(source.Scopes)
-	source.IconURL = strings.TrimSpace(source.IconURL)
+	source.Type = strings.ToLower(source.Type)
+	utils.TrimStringFields(
+		&source.Name,
+		&source.Type,
+		&source.DisplayName,
+		&source.ClientID,
+		&source.ClientSecret,
+		&source.OpenIDDiscoveryURL,
+		&source.Scopes,
+		&source.IconURL,
+	)
 	if source.DisplayName == "" {
 		source.DisplayName = source.Name
 	}
diff --git a/openflare_server/model/file.go b/openflare_server/model/file.go
deleted file mode 100644
index 95f95f77..00000000
--- a/openflare_server/model/file.go
+++ /dev/null
@@ -1,50 +0,0 @@
-package model
-
-import (
-	"gorm.io/gorm"
-	"openflare/common"
-	"os"
-	"path"
-)
-
-type File struct {
-	Id              int    `json:"id"`
-	Filename        string `json:"filename" gorm:"index"`
-	Description     string `json:"description"`
-	Uploader        string `json:"uploader"  gorm:"index"`
-	UploaderId      int    `json:"uploader_id"  gorm:"index"`
-	Link            string `json:"link" gorm:"unique;index"`
-	UploadTime      string `json:"upload_time"`
-	DownloadCounter int    `json:"download_counter"`
-}
-
-func GetAllFiles(startIdx int, num int) ([]*File, error) {
-	var files []*File
-	var err error
-	err = DB.Order("id desc").Limit(num).Offset(startIdx).Find(&files).Error
-	return files, err
-}
-
-func SearchFiles(keyword string) (files []*File, err error) {
-	err = DB.Select([]string{"id", "filename", "description", "uploader", "uploader_id", "link", "upload_time", "download_counter"}).Where(
-		"filename LIKE ? or uploader LIKE ? or uploader_id = ?", keyword+"%", keyword+"%", keyword).Find(&files).Error
-	return files, err
-}
-
-func (file *File) Insert() error {
-	var err error
-	err = DB.Create(file).Error
-	return err
-}
-
-// Delete Make sure link is valid! Because we will use os.Remove to delete it!
-func (file *File) Delete() error {
-	var err error
-	err = DB.Delete(file).Error
-	err = os.Remove(path.Join(common.UploadPath, file.Link))
-	return err
-}
-
-func UpdateDownloadCounter(link string) {
-	DB.Model(&File{}).Where("link = ?", link).UpdateColumn("download_counter", gorm.Expr("download_counter + 1"))
-}
diff --git a/openflare_server/model/main.go b/openflare_server/model/main.go
index 518e9768..94980bdf 100644
--- a/openflare_server/model/main.go
+++ b/openflare_server/model/main.go
@@ -2,10 +2,6 @@ package model
 
 import (
 	"fmt"
-	"github.com/glebarez/sqlite"
-	"gorm.io/driver/postgres"
-	"gorm.io/gorm"
-	"gorm.io/gorm/schema"
 	"log/slog"
 	"openflare/common"
 	"openflare/utils/security"
@@ -13,6 +9,11 @@ import (
 	"reflect"
 	"strings"
 	"sync"
+
+	"github.com/glebarez/sqlite"
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+	"gorm.io/gorm/schema"
 )
 
 var DB *gorm.DB
@@ -25,7 +26,6 @@ type dbModel struct {
 
 func registeredModels() []any {
 	return []any{
-		&File{},
 		&User{},
 		&AuthSource{},
 		&ExternalAccount{},
diff --git a/openflare_server/service/agent.go b/openflare_server/service/agent.go
index 6adc5fbb..5cbcbb1e 100644
--- a/openflare_server/service/agent.go
+++ b/openflare_server/service/agent.go
@@ -6,6 +6,7 @@ import (
 	"log/slog"
 	"openflare/common"
 	"openflare/model"
+	"openflare/utils"
 	"strings"
 	"time"
 
@@ -239,16 +240,24 @@ func GetActiveConfigForAgent() (*AgentConfigResponse, error) {
 	}, nil
 }
 
+func normalizeApplyLogPayload(payload ApplyLogPayload) ApplyLogPayload {
+	payload.Result = strings.ToLower(payload.Result)
+	utils.TrimStringFields(
+		&payload.NodeID,
+		&payload.Version,
+		&payload.Result,
+		&payload.Message,
+		&payload.Checksum,
+		&payload.MainConfigChecksum,
+		&payload.RouteConfigChecksum,
+	)
+	payload.Message = truncateForDatabase(payload.Message, 16000)
+	return payload
+}
+
 func ReportApplyLog(payload ApplyLogPayload) (*model.ApplyLog, error) {
 	now := time.Now()
-	payload.NodeID = strings.TrimSpace(payload.NodeID)
-	payload.Version = strings.TrimSpace(payload.Version)
-	payload.Result = strings.TrimSpace(strings.ToLower(payload.Result))
-	payload.Message = strings.TrimSpace(payload.Message)
-	payload.Checksum = strings.TrimSpace(payload.Checksum)
-	payload.MainConfigChecksum = strings.TrimSpace(payload.MainConfigChecksum)
-	payload.RouteConfigChecksum = strings.TrimSpace(payload.RouteConfigChecksum)
-	payload.Message = truncateForDatabase(payload.Message, 16000)
+	payload = normalizeApplyLogPayload(payload)
 	if payload.NodeID == "" {
 		return nil, errors.New("node_id 不能为空")
 	}
diff --git a/openflare_server/utils/string.go b/openflare_server/utils/string.go
new file mode 100644
index 00000000..d4dd50fa
--- /dev/null
+++ b/openflare_server/utils/string.go
@@ -0,0 +1,12 @@
+package utils
+
+import "strings"
+
+// TrimStringFields trims leading and trailing spaces from all provided string pointers.
+func TrimStringFields(fields ...*string) {
+	for _, f := range fields {
+		if f != nil {
+			*f = strings.TrimSpace(*f)
+		}
+	}
+}