feat: user manage api

internal/db/user.go

@@ -86,6 +86,9 @@ func DeleteUserById(id uint) error {
 	if err != nil {
 		return err
 	}
+	if old.IsAdmin() || old.IsGuest() {
+		return errors.WithStack(errs.DeleteAdminOrGuest)
+	}
 	userCache.Del(old.Username)
 	return errors.WithStack(db.Delete(&model.User{}, id).Error)
 }

internal/errs/user.go

@@ -3,7 +3,8 @@ package errs
 import "errors"
 
 var (
-	EmptyUsername = errors.New("username is empty")
-	EmptyPassword = errors.New("password is empty")
-	WrongPassword = errors.New("password is incorrect")
+	EmptyUsername      = errors.New("username is empty")
+	EmptyPassword      = errors.New("password is empty")
+	WrongPassword      = errors.New("password is incorrect")
+	DeleteAdminOrGuest = errors.New("cannot delete admin or guest")
 )

internal/model/user.go

@@ -12,13 +12,13 @@ const (
 )
 
 type User struct {
-	ID       uint   `json:"id" gorm:"primaryKey"`   // unique key
-	Username string `json:"username" gorm:"unique"` // username
-	Password string `json:"password"`               // password
-	BasePath string `json:"base_path"`              // base path
-	ReadOnly bool   `json:"read_only"`              // read only
-	Webdav   bool   `json:"webdav"`                 // allow webdav
-	Role     int    `json:"role"`                   // user's role
+	ID       uint   `json:"id" gorm:"primaryKey"`                      // unique key
+	Username string `json:"username" gorm:"unique" binding:"required"` // username
+	Password string `json:"password"`                                  // password
+	BasePath string `json:"base_path"`                                 // base path
+	ReadOnly bool   `json:"read_only"`                                 // read only
+	Webdav   bool   `json:"webdav"`                                    // allow webdav
+	Role     int    `json:"role"`                                      // user's role
 }
 
 func (u User) IsGuest() bool {