移除管理员数据库模型，改为通过配置管理管理员身份和认证逻辑，并更新相关逻辑和文档

internal/api/admin/auth.go

@@ -2,10 +2,9 @@ package admin
 
 import (
 	"FileRelay/internal/auth"
-	"FileRelay/internal/bootstrap"
+	"FileRelay/internal/config"
 	"FileRelay/internal/model"
 	"net/http"
-	"time"
 
 	"github.com/gin-gonic/gin"
 	"golang.org/x/crypto/bcrypt"
@@ -43,27 +42,24 @@ func (h *AuthHandler) Login(c *gin.Context) {
 		return
 	}
 
-	var admin model.Admin
-	if err := bootstrap.DB.First(&admin).Error; err != nil {
-		c.JSON(http.StatusInternalServerError, model.ErrorResponse(model.CodeInternalError, "Admin not found"))
+	passwordHash := config.GlobalConfig.Security.AdminPasswordHash
+	if passwordHash == "" {
+		c.JSON(http.StatusInternalServerError, model.ErrorResponse(model.CodeInternalError, "Admin password hash not configured"))
 		return
 	}
 
-	if err := bcrypt.CompareHashAndPassword([]byte(admin.PasswordHash), []byte(req.Password)); err != nil {
+	if err := bcrypt.CompareHashAndPassword([]byte(passwordHash), []byte(req.Password)); err != nil {
 		c.JSON(http.StatusUnauthorized, model.ErrorResponse(model.CodeUnauthorized, "Incorrect password"))
 		return
 	}
 
-	token, err := auth.GenerateToken(admin.ID)
+	// 使用固定 ID 1 代表管理员（因为不再有数据库记录）
+	token, err := auth.GenerateToken(1)
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, model.ErrorResponse(model.CodeInternalError, "Failed to generate token"))
 		return
 	}
 
-	// 更新登录时间
-	now := time.Now()
-	bootstrap.DB.Model(&admin).Update("last_login", &now)
-
 	c.JSON(http.StatusOK, model.SuccessResponse(LoginResponse{
 		Token: token,
 	}))

internal/bootstrap/init.go

@@ -34,7 +34,6 @@ func InitDB() {
 		&model.FileBatch{},
 		&model.FileItem{},
 		&model.APIToken{},
-		&model.Admin{},
 	)
 	if err != nil {
 		log.Fatalf("Failed to migrate database: %v", err)
@@ -74,31 +73,28 @@ func ReloadStorage() error {
 }
 
 func initAdmin() {
-	var count int64
-	DB.Model(&model.Admin{}).Count(&count)
-	if count == 0 {
-		passwordHash := config.GlobalConfig.Security.AdminPasswordHash
-		if passwordHash == "" {
-			// 生成随机密码
-			password := generateRandomPassword(12)
-			hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
-			if err != nil {
-				log.Fatalf("Failed to generate password hash: %v", err)
-			}
-			passwordHash = string(hash)
-			fmt.Printf("**************************************************\n")
-			fmt.Printf("NO ADMIN PASSWORD CONFIGURED. GENERATED RANDOM PASSWORD:\n")
-			fmt.Printf("Password: %s\n", password)
-			fmt.Printf("Please save this password or configure admin_password_hash in config.yaml\n")
-			fmt.Printf("**************************************************\n")
+	passwordHash := config.GlobalConfig.Security.AdminPasswordHash
+	if passwordHash == "" {
+		// 生成随机密码
+		password := generateRandomPassword(12)
+		hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+		if err != nil {
+			log.Fatalf("Failed to generate password hash: %v", err)
 		}
+		passwordHash = string(hash)
+		fmt.Printf("**************************************************\n")
+		fmt.Printf("NO ADMIN PASSWORD CONFIGURED. GENERATED RANDOM PASSWORD:\n")
+		fmt.Printf("Password: %s\n", password)
+		fmt.Printf("Please save this password or configure admin_password_hash in config.yaml\n")
+		fmt.Printf("**************************************************\n")
 
-		admin := &model.Admin{
-			PasswordHash: passwordHash,
+		// 将生成的哈希保存回配置文件
+		config.GlobalConfig.Security.AdminPasswordHash = passwordHash
+		if err := config.SaveConfig(); err != nil {
+			fmt.Printf("Warning: Failed to save generated password hash to config: %v\n", err)
 		}
-		DB.Create(admin)
-		fmt.Println("Admin account initialized.")
 	}
+	fmt.Println("Admin authentication initialized via config.")
 }
 
 func generateRandomPassword(length int) string {

internal/model/admin.go

@@ -4,8 +4,8 @@ import (
 	"time"
 )
 
-type Admin struct {
-	ID           uint       `gorm:"primaryKey" json:"id"`
-	PasswordHash string     `json:"-"`
-	LastLogin    *time.Time `json:"last_login"`
+// AdminSession 管理员会话信息 (不再存库，仅用于 JWT 或 API 交互)
+type AdminSession struct {
+	ID        uint       `json:"id"`
+	LastLogin *time.Time `json:"last_login"`
 }